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Wolfgang Hottgenroth
2016-10-31 07:38:13 +01:00
commit 7e4bac25c8
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<?xml version="1.0" encoding="UTF-8" standalone="no"?>
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<externalSettings/>
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<extension id="org.eclipse.cdt.core.ELF" point="org.eclipse.cdt.core.BinaryParser"/>
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<extension id="org.eclipse.cdt.core.MakeErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
<extension id="org.eclipse.cdt.core.GCCErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
</extensions>
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<configuration artifactName="${ProjName}" buildProperties="" description="" id="it.baeyens.arduino.core.toolChain.release.529393341" name="Release" parent="org.eclipse.cdt.build.core.emptycfg">
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<listOptionValue builtIn="false" value="&quot;${workspace_loc:/MqttCanGateway/core/core}&quot;"/>
<listOptionValue builtIn="false" value="&quot;${workspace_loc:/MqttCanGateway/core/variant}&quot;"/>
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<listOptionValue builtIn="false" value="&quot;${workspace_loc:/MqttCanGateway/SPI}&quot;"/>
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<tool id="it.baeyens.arduino.tool.size.161372956" name="Arduino tool Print Size" superClass="it.baeyens.arduino.tool.size"/>
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<entry flags="VALUE_WORKSPACE_PATH" kind="sourcePath" name="CAN"/>
<entry flags="VALUE_WORKSPACE_PATH|RESOLVED" kind="sourcePath" name="Ethernet"/>
<entry flags="VALUE_WORKSPACE_PATH|RESOLVED" kind="sourcePath" name="SPI"/>
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<project id="MqttCanGateway.null.1016889897" name="MqttCanGateway"/>
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<storageModule moduleId="refreshScope"/>
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/Release/

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<?xml version="1.0" encoding="UTF-8"?>
<projectDescription>
<name>MqttCanGateway</name>
<comment></comment>
<projects>
</projects>
<buildSpec>
<buildCommand>
<name>it.baeyens.arduino.core.inoToCpp</name>
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</arguments>
</buildCommand>
<buildCommand>
<name>org.eclipse.cdt.managedbuilder.core.genmakebuilder</name>
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</arguments>
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<name>org.eclipse.cdt.managedbuilder.core.ScannerConfigBuilder</name>
<triggers>full,incremental,</triggers>
<arguments>
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<natures>
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<nature>org.eclipse.cdt.managedbuilder.core.ScannerConfigNature</nature>
<nature>it.baeyens.arduinonature</nature>
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<linkedResources>
<link>
<name>core/core</name>
<type>2</type>
<location>/opt/eclipse/eclipse-arduino/cpp-neon/eclipse/arduinoPlugin/packages/arduino/hardware/avr/1.6.14/cores/arduino</location>
</link>
<link>
<name>core/variant</name>
<type>2</type>
<location>/opt/eclipse/eclipse-arduino/cpp-neon/eclipse/arduinoPlugin/packages/arduino/hardware/avr/1.6.14/variants/standard</location>
</link>
</linkedResources>
</projectDescription>

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<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<project>
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<provider-reference id="org.eclipse.cdt.managedbuilder.core.MBSLanguageSettingsProvider" ref="shared-provider"/>
</extension>
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</project>

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/*
mcp_can.cpp
2012 Copyright (c) Seeed Technology Inc. All right reserved.
Author:Loovee
2014-1-16
Contributor:
Cory J. Fowler
Latonita
Woodward1
Mehtajaghvi
BykeBlast
TheRo0T
Tsipizic
ralfEdmund
Nathancheek
BlueAndi
Adlerweb
Btetz
Hurvajs
xboxpro1
The MIT License (MIT)
Copyright (c) 2013 Seeed Technology Inc.
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
*/
#include "mcp_can.h"
#define spi_readwrite SPI.transfer
#define spi_read() spi_readwrite(0x00)
#define SPI_BEGIN() SPI.beginTransaction(SPISettings(10000000, MSBFIRST, SPI_MODE0))
#define SPI_END() SPI.endTransaction()
/*********************************************************************************************************
** Function name: mcp2515_reset
** Descriptions: reset the device
*********************************************************************************************************/
void MCP_CAN::mcp2515_reset(void)
{
#ifdef SPI_HAS_TRANSACTION
SPI_BEGIN();
#endif
MCP2515_SELECT();
spi_readwrite(MCP_RESET);
MCP2515_UNSELECT();
#ifdef SPI_HAS_TRANSACTION
SPI_END();
#endif
delay(10);
}
/*********************************************************************************************************
** Function name: mcp2515_readRegister
** Descriptions: read register
*********************************************************************************************************/
INT8U MCP_CAN::mcp2515_readRegister(const INT8U address)
{
INT8U ret;
#ifdef SPI_HAS_TRANSACTION
SPI_BEGIN();
#endif
MCP2515_SELECT();
spi_readwrite(MCP_READ);
spi_readwrite(address);
ret = spi_read();
MCP2515_UNSELECT();
#ifdef SPI_HAS_TRANSACTION
SPI_END();
#endif
return ret;
}
/*********************************************************************************************************
** Function name: mcp2515_readRegisterS
** Descriptions: read registerS
*********************************************************************************************************/
void MCP_CAN::mcp2515_readRegisterS(const INT8U address, INT8U values[], const INT8U n)
{
INT8U i;
#ifdef SPI_HAS_TRANSACTION
SPI_BEGIN();
#endif
MCP2515_SELECT();
spi_readwrite(MCP_READ);
spi_readwrite(address);
// mcp2515 has auto-increment of address-pointer
for (i=0; i<n && i<CAN_MAX_CHAR_IN_MESSAGE; i++) {
values[i] = spi_read();
}
MCP2515_UNSELECT();
#ifdef SPI_HAS_TRANSACTION
SPI_END();
#endif
}
/*********************************************************************************************************
** Function name: mcp2515_setRegister
** Descriptions: set register
*********************************************************************************************************/
void MCP_CAN::mcp2515_setRegister(const INT8U address, const INT8U value)
{
#ifdef SPI_HAS_TRANSACTION
SPI_BEGIN();
#endif
MCP2515_SELECT();
spi_readwrite(MCP_WRITE);
spi_readwrite(address);
spi_readwrite(value);
MCP2515_UNSELECT();
#ifdef SPI_HAS_TRANSACTION
SPI_END();
#endif
}
/*********************************************************************************************************
** Function name: mcp2515_setRegisterS
** Descriptions: set registerS
*********************************************************************************************************/
void MCP_CAN::mcp2515_setRegisterS(const INT8U address, const INT8U values[], const INT8U n)
{
INT8U i;
#ifdef SPI_HAS_TRANSACTION
SPI_BEGIN();
#endif
MCP2515_SELECT();
spi_readwrite(MCP_WRITE);
spi_readwrite(address);
for (i=0; i<n; i++)
{
spi_readwrite(values[i]);
}
MCP2515_UNSELECT();
#ifdef SPI_HAS_TRANSACTION
SPI_END();
#endif
}
/*********************************************************************************************************
** Function name: mcp2515_modifyRegister
** Descriptions: set bit of one register
*********************************************************************************************************/
void MCP_CAN::mcp2515_modifyRegister(const INT8U address, const INT8U mask, const INT8U data)
{
#ifdef SPI_HAS_TRANSACTION
SPI_BEGIN();
#endif
MCP2515_SELECT();
spi_readwrite(MCP_BITMOD);
spi_readwrite(address);
spi_readwrite(mask);
spi_readwrite(data);
MCP2515_UNSELECT();
#ifdef SPI_HAS_TRANSACTION
SPI_END();
#endif
}
/*********************************************************************************************************
** Function name: mcp2515_readStatus
** Descriptions: read mcp2515's Status
*********************************************************************************************************/
INT8U MCP_CAN::mcp2515_readStatus(void)
{
INT8U i;
#ifdef SPI_HAS_TRANSACTION
SPI_BEGIN();
#endif
MCP2515_SELECT();
spi_readwrite(MCP_READ_STATUS);
i = spi_read();
MCP2515_UNSELECT();
#ifdef SPI_HAS_TRANSACTION
SPI_END();
#endif
return i;
}
/*********************************************************************************************************
** Function name: mcp2515_setCANCTRL_Mode
** Descriptions: set control mode
*********************************************************************************************************/
INT8U MCP_CAN::mcp2515_setCANCTRL_Mode(const INT8U newmode)
{
INT8U i;
mcp2515_modifyRegister(MCP_CANCTRL, MODE_MASK, newmode);
i = mcp2515_readRegister(MCP_CANCTRL);
i &= MODE_MASK;
if ( i == newmode )
{
return MCP2515_OK;
}
return MCP2515_FAIL;
}
/*********************************************************************************************************
** Function name: mcp2515_configRate
** Descriptions: set boadrate
*********************************************************************************************************/
INT8U MCP_CAN::mcp2515_configRate(const INT8U canSpeed)
{
INT8U set, cfg1, cfg2, cfg3;
set = 1;
switch (canSpeed)
{
case (CAN_5KBPS):
cfg1 = MCP_16MHz_5kBPS_CFG1;
cfg2 = MCP_16MHz_5kBPS_CFG2;
cfg3 = MCP_16MHz_5kBPS_CFG3;
break;
case (CAN_10KBPS):
cfg1 = MCP_16MHz_10kBPS_CFG1;
cfg2 = MCP_16MHz_10kBPS_CFG2;
cfg3 = MCP_16MHz_10kBPS_CFG3;
break;
case (CAN_20KBPS):
cfg1 = MCP_16MHz_20kBPS_CFG1;
cfg2 = MCP_16MHz_20kBPS_CFG2;
cfg3 = MCP_16MHz_20kBPS_CFG3;
break;
case (CAN_25KBPS):
cfg1 = MCP_16MHz_25kBPS_CFG1;
cfg2 = MCP_16MHz_25kBPS_CFG2;
cfg3 = MCP_16MHz_25kBPS_CFG3;
break;
case (CAN_31K25BPS):
cfg1 = MCP_16MHz_31k25BPS_CFG1;
cfg2 = MCP_16MHz_31k25BPS_CFG2;
cfg3 = MCP_16MHz_31k25BPS_CFG3;
break;
case (CAN_33KBPS):
cfg1 = MCP_16MHz_33kBPS_CFG1;
cfg2 = MCP_16MHz_33kBPS_CFG2;
cfg3 = MCP_16MHz_33kBPS_CFG3;
break;
case (CAN_40KBPS):
cfg1 = MCP_16MHz_40kBPS_CFG1;
cfg2 = MCP_16MHz_40kBPS_CFG2;
cfg3 = MCP_16MHz_40kBPS_CFG3;
break;
case (CAN_50KBPS):
cfg1 = MCP_16MHz_50kBPS_CFG1;
cfg2 = MCP_16MHz_50kBPS_CFG2;
cfg3 = MCP_16MHz_50kBPS_CFG3;
break;
case (CAN_80KBPS):
cfg1 = MCP_16MHz_80kBPS_CFG1;
cfg2 = MCP_16MHz_80kBPS_CFG2;
cfg3 = MCP_16MHz_80kBPS_CFG3;
break;
case (CAN_83K3BPS):
cfg1 = MCP_16MHz_83k3BPS_CFG1;
cfg2 = MCP_16MHz_83k3BPS_CFG2;
cfg3 = MCP_16MHz_83k3BPS_CFG3;
break;
case (CAN_95KBPS):
cfg1 = MCP_16MHz_95kBPS_CFG1;
cfg2 = MCP_16MHz_95kBPS_CFG2;
cfg3 = MCP_16MHz_95kBPS_CFG3;
break;
case (CAN_100KBPS): /* 100KBPS */
cfg1 = MCP_16MHz_100kBPS_CFG1;
cfg2 = MCP_16MHz_100kBPS_CFG2;
cfg3 = MCP_16MHz_100kBPS_CFG3;
break;
case (CAN_125KBPS):
cfg1 = MCP_16MHz_125kBPS_CFG1;
cfg2 = MCP_16MHz_125kBPS_CFG2;
cfg3 = MCP_16MHz_125kBPS_CFG3;
break;
case (CAN_200KBPS):
cfg1 = MCP_16MHz_200kBPS_CFG1;
cfg2 = MCP_16MHz_200kBPS_CFG2;
cfg3 = MCP_16MHz_200kBPS_CFG3;
break;
case (CAN_250KBPS):
cfg1 = MCP_16MHz_250kBPS_CFG1;
cfg2 = MCP_16MHz_250kBPS_CFG2;
cfg3 = MCP_16MHz_250kBPS_CFG3;
break;
case (CAN_500KBPS):
cfg1 = MCP_16MHz_500kBPS_CFG1;
cfg2 = MCP_16MHz_500kBPS_CFG2;
cfg3 = MCP_16MHz_500kBPS_CFG3;
break;
case (CAN_666KBPS):
cfg1 = MCP_16MHz_666kBPS_CFG1;
cfg2 = MCP_16MHz_666kBPS_CFG2;
cfg3 = MCP_16MHz_666kBPS_CFG3;
break;
case (CAN_1000KBPS):
cfg1 = MCP_16MHz_1000kBPS_CFG1;
cfg2 = MCP_16MHz_1000kBPS_CFG2;
cfg3 = MCP_16MHz_1000kBPS_CFG3;
break;
default:
set = 0;
break;
}
if (set) {
mcp2515_setRegister(MCP_CNF1, cfg1);
mcp2515_setRegister(MCP_CNF2, cfg2);
mcp2515_setRegister(MCP_CNF3, cfg3);
return MCP2515_OK;
}
else {
return MCP2515_FAIL;
}
}
/*********************************************************************************************************
** Function name: mcp2515_initCANBuffers
** Descriptions: init canbuffers
*********************************************************************************************************/
void MCP_CAN::mcp2515_initCANBuffers(void)
{
INT8U i, a1, a2, a3;
a1 = MCP_TXB0CTRL;
a2 = MCP_TXB1CTRL;
a3 = MCP_TXB2CTRL;
for (i = 0; i < 14; i++) { /* in-buffer loop */
mcp2515_setRegister(a1, 0);
mcp2515_setRegister(a2, 0);
mcp2515_setRegister(a3, 0);
a1++;
a2++;
a3++;
}
mcp2515_setRegister(MCP_RXB0CTRL, 0);
mcp2515_setRegister(MCP_RXB1CTRL, 0);
}
/*********************************************************************************************************
** Function name: mcp2515_init
** Descriptions: init the device
*********************************************************************************************************/
INT8U MCP_CAN::mcp2515_init(const INT8U canSpeed) /* mcp2515init */
{
INT8U res;
mcp2515_reset();
res = mcp2515_setCANCTRL_Mode(MODE_CONFIG);
if(res > 0)
{
#if DEBUG_MODE
Serial.print("Enter setting mode fall\r\n");
#else
delay(10);
#endif
return res;
}
#if DEBUG_MODE
Serial.print("Enter setting mode success \r\n");
#else
delay(10);
#endif
/* set boadrate */
if(mcp2515_configRate(canSpeed))
{
#if DEBUG_MODE
Serial.print("set rate fall!!\r\n");
#else
delay(10);
#endif
return res;
}
#if DEBUG_MODE
Serial.print("set rate success!!\r\n");
#else
delay(10);
#endif
if ( res == MCP2515_OK ) {
/* init canbuffers */
mcp2515_initCANBuffers();
/* interrupt mode */
mcp2515_setRegister(MCP_CANINTE, MCP_RX0IF | MCP_RX1IF);
#if (DEBUG_RXANY==1)
/* enable both receive-buffers */
/* to receive any message */
/* and enable rollover */
mcp2515_modifyRegister(MCP_RXB0CTRL,
MCP_RXB_RX_MASK | MCP_RXB_BUKT_MASK,
MCP_RXB_RX_ANY | MCP_RXB_BUKT_MASK);
mcp2515_modifyRegister(MCP_RXB1CTRL, MCP_RXB_RX_MASK,
MCP_RXB_RX_ANY);
#else
/* enable both receive-buffers */
/* to receive messages */
/* with std. and ext. identifie */
/* rs */
/* and enable rollover */
mcp2515_modifyRegister(MCP_RXB0CTRL,
MCP_RXB_RX_MASK | MCP_RXB_BUKT_MASK,
MCP_RXB_RX_STDEXT | MCP_RXB_BUKT_MASK );
mcp2515_modifyRegister(MCP_RXB1CTRL, MCP_RXB_RX_MASK,
MCP_RXB_RX_STDEXT);
#endif
/* enter normal mode */
res = mcp2515_setCANCTRL_Mode(MODE_NORMAL);
if(res)
{
#if DEBUG_MODE
Serial.print("Enter Normal Mode Fall!!\r\n");
#else
delay(10);
#endif
return res;
}
#if DEBUG_MODE
Serial.print("Enter Normal Mode Success!!\r\n");
#else
delay(10);
#endif
}
return res;
}
/*********************************************************************************************************
** Function name: mcp2515_write_id
** Descriptions: write can id
*********************************************************************************************************/
void MCP_CAN::mcp2515_write_id( const INT8U mcp_addr, const INT8U ext, const INT32U id )
{
uint16_t canid;
INT8U tbufdata[4];
canid = (uint16_t)(id & 0x0FFFF);
if ( ext == 1)
{
tbufdata[MCP_EID0] = (INT8U) (canid & 0xFF);
tbufdata[MCP_EID8] = (INT8U) (canid >> 8);
canid = (uint16_t)(id >> 16);
tbufdata[MCP_SIDL] = (INT8U) (canid & 0x03);
tbufdata[MCP_SIDL] += (INT8U) ((canid & 0x1C) << 3);
tbufdata[MCP_SIDL] |= MCP_TXB_EXIDE_M;
tbufdata[MCP_SIDH] = (INT8U) (canid >> 5 );
}
else
{
tbufdata[MCP_SIDH] = (INT8U) (canid >> 3 );
tbufdata[MCP_SIDL] = (INT8U) ((canid & 0x07 ) << 5);
tbufdata[MCP_EID0] = 0;
tbufdata[MCP_EID8] = 0;
}
mcp2515_setRegisterS( mcp_addr, tbufdata, 4 );
}
/*********************************************************************************************************
** Function name: mcp2515_read_id
** Descriptions: read can id
*********************************************************************************************************/
void MCP_CAN::mcp2515_read_id( const INT8U mcp_addr, INT8U* ext, INT32U* id )
{
INT8U tbufdata[4];
*ext = 0;
*id = 0;
mcp2515_readRegisterS( mcp_addr, tbufdata, 4 );
*id = (tbufdata[MCP_SIDH]<<3) + (tbufdata[MCP_SIDL]>>5);
if ( (tbufdata[MCP_SIDL] & MCP_TXB_EXIDE_M) == MCP_TXB_EXIDE_M )
{
/* extended id */
*id = (*id<<2) + (tbufdata[MCP_SIDL] & 0x03);
*id = (*id<<8) + tbufdata[MCP_EID8];
*id = (*id<<8) + tbufdata[MCP_EID0];
*ext = 1;
}
}
/*********************************************************************************************************
** Function name: mcp2515_write_canMsg
** Descriptions: write msg
*********************************************************************************************************/
void MCP_CAN::mcp2515_write_canMsg( const INT8U buffer_sidh_addr)
{
INT8U mcp_addr;
mcp_addr = buffer_sidh_addr;
mcp2515_setRegisterS(mcp_addr+5, m_nDta, m_nDlc ); /* write data bytes */
if ( m_nRtr == 1) /* if RTR set bit in byte */
{
m_nDlc |= MCP_RTR_MASK;
}
mcp2515_setRegister((mcp_addr+4), m_nDlc ); /* write the RTR and DLC */
mcp2515_write_id(mcp_addr, m_nExtFlg, m_nID ); /* write CAN id */
}
/*********************************************************************************************************
** Function name: mcp2515_read_canMsg
** Descriptions: read message
*********************************************************************************************************/
void MCP_CAN::mcp2515_read_canMsg( const INT8U buffer_sidh_addr) /* read can msg */
{
INT8U mcp_addr, ctrl;
mcp_addr = buffer_sidh_addr;
mcp2515_read_id( mcp_addr, &m_nExtFlg,&m_nID );
ctrl = mcp2515_readRegister( mcp_addr-1 );
m_nDlc = mcp2515_readRegister( mcp_addr+4 );
if ((ctrl & 0x08)) {
m_nRtr = 1;
}
else {
m_nRtr = 0;
}
m_nDlc &= MCP_DLC_MASK;
mcp2515_readRegisterS( mcp_addr+5, &(m_nDta[0]), m_nDlc );
}
/*********************************************************************************************************
** Function name: mcp2515_start_transmit
** Descriptions: start transmit
*********************************************************************************************************/
void MCP_CAN::mcp2515_start_transmit(const INT8U mcp_addr) /* start transmit */
{
mcp2515_modifyRegister( mcp_addr-1 , MCP_TXB_TXREQ_M, MCP_TXB_TXREQ_M );
}
/*********************************************************************************************************
** Function name: mcp2515_getNextFreeTXBuf
** Descriptions: get Next free txbuf
*********************************************************************************************************/
INT8U MCP_CAN::mcp2515_getNextFreeTXBuf(INT8U *txbuf_n) /* get Next free txbuf */
{
INT8U res, i, ctrlval;
INT8U ctrlregs[MCP_N_TXBUFFERS] = { MCP_TXB0CTRL, MCP_TXB1CTRL, MCP_TXB2CTRL };
res = MCP_ALLTXBUSY;
*txbuf_n = 0x00;
/* check all 3 TX-Buffers */
for (i=0; i<MCP_N_TXBUFFERS; i++) {
ctrlval = mcp2515_readRegister( ctrlregs[i] );
if ( (ctrlval & MCP_TXB_TXREQ_M) == 0 ) {
*txbuf_n = ctrlregs[i]+1; /* return SIDH-address of Buffe */
/* r */
res = MCP2515_OK;
return res; /* ! function exit */
}
}
return res;
}
/*********************************************************************************************************
** Function name: set CS
** Descriptions: init CS pin and set UNSELECTED
*********************************************************************************************************/
MCP_CAN::MCP_CAN(INT8U _CS)
{
SPICS = _CS;
pinMode(SPICS, OUTPUT);
MCP2515_UNSELECT();
}
/*********************************************************************************************************
** Function name: init
** Descriptions: init can and set speed
*********************************************************************************************************/
INT8U MCP_CAN::begin(INT8U speedset)
{
INT8U res;
SPI.begin();
res = mcp2515_init(speedset);
if (res == MCP2515_OK) return CAN_OK;
else return CAN_FAILINIT;
}
/*********************************************************************************************************
** Function name: init_Mask
** Descriptions: init canid Masks
*********************************************************************************************************/
INT8U MCP_CAN::init_Mask(INT8U num, INT8U ext, INT32U ulData)
{
INT8U res = MCP2515_OK;
#if DEBUG_MODE
Serial.print("Begin to set Mask!!\r\n");
#else
delay(10);
#endif
res = mcp2515_setCANCTRL_Mode(MODE_CONFIG);
if(res > 0){
#if DEBUG_MODE
Serial.print("Enter setting mode fall\r\n");
#else
delay(10);
#endif
return res;
}
if (num == 0){
mcp2515_write_id(MCP_RXM0SIDH, ext, ulData);
}
else if(num == 1){
mcp2515_write_id(MCP_RXM1SIDH, ext, ulData);
}
else res = MCP2515_FAIL;
res = mcp2515_setCANCTRL_Mode(MODE_NORMAL);
if(res > 0){
#if DEBUG_MODE
Serial.print("Enter normal mode fall\r\n");
#else
delay(10);
#endif
return res;
}
#if DEBUG_MODE
Serial.print("set Mask success!!\r\n");
#else
delay(10);
#endif
return res;
}
/*********************************************************************************************************
** Function name: init_Filt
** Descriptions: init canid filters
*********************************************************************************************************/
INT8U MCP_CAN::init_Filt(INT8U num, INT8U ext, INT32U ulData)
{
INT8U res = MCP2515_OK;
#if DEBUG_MODE
Serial.print("Begin to set Filter!!\r\n");
#else
delay(10);
#endif
res = mcp2515_setCANCTRL_Mode(MODE_CONFIG);
if(res > 0)
{
#if DEBUG_MODE
Serial.print("Enter setting mode fall\r\n");
#else
delay(10);
#endif
return res;
}
switch( num )
{
case 0:
mcp2515_write_id(MCP_RXF0SIDH, ext, ulData);
break;
case 1:
mcp2515_write_id(MCP_RXF1SIDH, ext, ulData);
break;
case 2:
mcp2515_write_id(MCP_RXF2SIDH, ext, ulData);
break;
case 3:
mcp2515_write_id(MCP_RXF3SIDH, ext, ulData);
break;
case 4:
mcp2515_write_id(MCP_RXF4SIDH, ext, ulData);
break;
case 5:
mcp2515_write_id(MCP_RXF5SIDH, ext, ulData);
break;
default:
res = MCP2515_FAIL;
}
res = mcp2515_setCANCTRL_Mode(MODE_NORMAL);
if(res > 0)
{
#if DEBUG_MODE
Serial.print("Enter normal mode fall\r\nSet filter fail!!\r\n");
#else
delay(10);
#endif
return res;
}
#if DEBUG_MODE
Serial.print("set Filter success!!\r\n");
#else
delay(10);
#endif
return res;
}
/*********************************************************************************************************
** Function name: setMsg
** Descriptions: set can message, such as dlc, id, dta[] and so on
*********************************************************************************************************/
INT8U MCP_CAN::setMsg(INT32U id, INT8U ext, INT8U len, INT8U rtr, INT8U *pData)
{
m_nExtFlg = ext;
m_nID = id;
m_nDlc = min( len, MAX_CHAR_IN_MESSAGE );
m_nRtr = rtr;
for(int i = 0; i<m_nDlc; i++)
{
m_nDta[i] = *(pData+i);
}
return MCP2515_OK;
}
/*********************************************************************************************************
** Function name: setMsg
** Descriptions: set can message, such as dlc, id, dta[] and so on
*********************************************************************************************************/
INT8U MCP_CAN::setMsg(INT32U id, INT8U ext, INT8U len, INT8U *pData)
{
return setMsg( id, ext, len, 0, pData );
}
/*********************************************************************************************************
** Function name: clearMsg
** Descriptions: set all message to zero
*********************************************************************************************************/
INT8U MCP_CAN::clearMsg()
{
m_nID = 0;
m_nDlc = 0;
m_nExtFlg = 0;
m_nRtr = 0;
m_nfilhit = 0;
for(int i = 0; i<m_nDlc; i++ )
m_nDta[i] = 0x00;
return MCP2515_OK;
}
/*********************************************************************************************************
** Function name: sendMsg
** Descriptions: send message
*********************************************************************************************************/
INT8U MCP_CAN::sendMsg()
{
INT8U res, res1, txbuf_n;
uint16_t uiTimeOut = 0;
do {
res = mcp2515_getNextFreeTXBuf(&txbuf_n); /* info = addr. */
uiTimeOut++;
} while (res == MCP_ALLTXBUSY && (uiTimeOut < TIMEOUTVALUE));
if(uiTimeOut == TIMEOUTVALUE)
{
return CAN_GETTXBFTIMEOUT; /* get tx buff time out */
}
uiTimeOut = 0;
mcp2515_write_canMsg( txbuf_n);
mcp2515_start_transmit( txbuf_n );
do
{
uiTimeOut++;
res1= mcp2515_readRegister(txbuf_n-1 /* the ctrl reg is located at txbuf_n-1 */); /* read send buff ctrl reg */
res1 = res1 & 0x08;
}while(res1 && (uiTimeOut < TIMEOUTVALUE));
if(uiTimeOut == TIMEOUTVALUE) /* send msg timeout */
{
return CAN_SENDMSGTIMEOUT;
}
return CAN_OK;
}
/*********************************************************************************************************
** Function name: sendMsgBuf
** Descriptions: send buf
*********************************************************************************************************/
INT8U MCP_CAN::sendMsgBuf(INT32U id, INT8U ext, INT8U rtr, INT8U len, INT8U *buf)
{
setMsg(id, ext, len, rtr, buf);
return sendMsg();
}
/*********************************************************************************************************
** Function name: sendMsgBuf
** Descriptions: send buf
*********************************************************************************************************/
INT8U MCP_CAN::sendMsgBuf(INT32U id, INT8U ext, INT8U len, INT8U *buf)
{
setMsg(id, ext, len, buf);
return sendMsg();
}
/*********************************************************************************************************
** Function name: readMsg
** Descriptions: read message
*********************************************************************************************************/
INT8U MCP_CAN::readMsg()
{
INT8U stat, res;
stat = mcp2515_readStatus();
if ( stat & MCP_STAT_RX0IF ) /* Msg in Buffer 0 */
{
mcp2515_read_canMsg( MCP_RXBUF_0);
mcp2515_modifyRegister(MCP_CANINTF, MCP_RX0IF, 0);
res = CAN_OK;
}
else if ( stat & MCP_STAT_RX1IF ) /* Msg in Buffer 1 */
{
mcp2515_read_canMsg( MCP_RXBUF_1);
mcp2515_modifyRegister(MCP_CANINTF, MCP_RX1IF, 0);
res = CAN_OK;
}
else
{
res = CAN_NOMSG;
}
return res;
}
/*********************************************************************************************************
** Function name: readMsgBuf
** Descriptions: read message buf
*********************************************************************************************************/
INT8U MCP_CAN::readMsgBuf(INT8U *len, INT8U buf[])
{
INT8U rc;
rc = readMsg();
if (rc == CAN_OK) {
*len = m_nDlc;
for(int i = 0; i<m_nDlc; i++) {
buf[i] = m_nDta[i];
}
} else {
*len = 0;
}
return rc;
}
/*********************************************************************************************************
** Function name: readMsgBufID
** Descriptions: read message buf and can bus source ID
*********************************************************************************************************/
INT8U MCP_CAN::readMsgBufID(INT32U *ID, INT8U *len, INT8U buf[])
{
INT8U rc;
rc = readMsg();
if (rc == CAN_OK) {
*len = m_nDlc;
*ID = m_nID;
for(int i = 0; i<m_nDlc && i < MAX_CHAR_IN_MESSAGE; i++) {
buf[i] = m_nDta[i];
}
} else {
*len = 0;
}
return rc;
}
/*********************************************************************************************************
** Function name: checkReceive
** Descriptions: check if got something
*********************************************************************************************************/
INT8U MCP_CAN::checkReceive(void)
{
INT8U res;
res = mcp2515_readStatus(); /* RXnIF in Bit 1 and 0 */
if ( res & MCP_STAT_RXIF_MASK )
{
return CAN_MSGAVAIL;
}
else
{
return CAN_NOMSG;
}
}
/*********************************************************************************************************
** Function name: checkError
** Descriptions: if something error
*********************************************************************************************************/
INT8U MCP_CAN::checkError(void)
{
INT8U eflg = mcp2515_readRegister(MCP_EFLG);
if ( eflg & MCP_EFLG_ERRORMASK )
{
return CAN_CTRLERROR;
}
else
{
return CAN_OK;
}
}
/*********************************************************************************************************
** Function name: getCanId
** Descriptions: when receive something you can get the can id!!
*********************************************************************************************************/
INT32U MCP_CAN::getCanId(void)
{
return m_nID;
}
/*********************************************************************************************************
** Function name: isRemoteRequest
** Descriptions: when receive something you can check if it was a request
*********************************************************************************************************/
INT8U MCP_CAN::isRemoteRequest(void)
{
return m_nRtr;
}
/*********************************************************************************************************
** Function name: isExtendedFrame
** Descriptions: did we just receive standard 11bit frame or extended 29bit? 0 = std, 1 = ext
*********************************************************************************************************/
INT8U MCP_CAN::isExtendedFrame(void)
{
return m_nExtFlg;
}
/*********************************************************************************************************
END FILE
*********************************************************************************************************/

140
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/*
mcp_can.h
2012 Copyright (c) Seeed Technology Inc. All right reserved.
Author:Loovee
2014-1-16
Contributor:
Cory J. Fowler
Latonita
Woodward1
Mehtajaghvi
BykeBlast
TheRo0T
Tsipizic
ralfEdmund
Nathancheek
BlueAndi
Adlerweb
Btetz
Hurvajs
The MIT License (MIT)
Copyright (c) 2013 Seeed Technology Inc.
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
*/
#ifndef _MCP2515_H_
#define _MCP2515_H_
#include "mcp_can_dfs.h"
#define MAX_CHAR_IN_MESSAGE 8
class MCP_CAN
{
private:
INT8U m_nExtFlg; /* identifier xxxID */
/* either extended (the 29 LSB) */
/* or standard (the 11 LSB) */
INT32U m_nID; /* can id */
INT8U m_nDlc; /* data length: */
INT8U m_nDta[MAX_CHAR_IN_MESSAGE]; /* data */
INT8U m_nRtr; /* rtr */
INT8U m_nfilhit;
INT8U SPICS;
/*
* mcp2515 driver function
*/
// private:
private:
void mcp2515_reset(void); /* reset mcp2515 */
INT8U mcp2515_readRegister(const INT8U address); /* read mcp2515's register */
void mcp2515_readRegisterS(const INT8U address,
INT8U values[],
const INT8U n);
void mcp2515_setRegister(const INT8U address, /* set mcp2515's register */
const INT8U value);
void mcp2515_setRegisterS(const INT8U address, /* set mcp2515's registers */
const INT8U values[],
const INT8U n);
void mcp2515_initCANBuffers(void);
void mcp2515_modifyRegister(const INT8U address, /* set bit of one register */
const INT8U mask,
const INT8U data);
INT8U mcp2515_readStatus(void); /* read mcp2515's Status */
INT8U mcp2515_setCANCTRL_Mode(const INT8U newmode); /* set mode */
INT8U mcp2515_configRate(const INT8U canSpeed); /* set boadrate */
INT8U mcp2515_init(const INT8U canSpeed); /* mcp2515init */
void mcp2515_write_id( const INT8U mcp_addr, /* write can id */
const INT8U ext,
const INT32U id );
void mcp2515_read_id( const INT8U mcp_addr, /* read can id */
INT8U* ext,
INT32U* id );
void mcp2515_write_canMsg( const INT8U buffer_sidh_addr ); /* write can msg */
void mcp2515_read_canMsg( const INT8U buffer_sidh_addr); /* read can msg */
void mcp2515_start_transmit(const INT8U mcp_addr); /* start transmit */
INT8U mcp2515_getNextFreeTXBuf(INT8U *txbuf_n); /* get Next free txbuf */
/*
* can operator function
*/
INT8U setMsg(INT32U id, INT8U ext, INT8U len, INT8U rtr, INT8U *pData); /* set message */
INT8U setMsg(INT32U id, INT8U ext, INT8U len, INT8U *pData); /* set message */
INT8U clearMsg(); /* clear all message to zero */
INT8U readMsg(); /* read message */
INT8U sendMsg(); /* send message */
public:
MCP_CAN(INT8U _CS);
INT8U begin(INT8U speedset); /* init can */
INT8U init_Mask(INT8U num, INT8U ext, INT32U ulData); /* init Masks */
INT8U init_Filt(INT8U num, INT8U ext, INT32U ulData); /* init filters */
INT8U sendMsgBuf(INT32U id, INT8U ext, INT8U rtr, INT8U len, INT8U *buf); /* send buf */
INT8U sendMsgBuf(INT32U id, INT8U ext, INT8U len, INT8U *buf); /* send buf */
INT8U readMsgBuf(INT8U *len, INT8U *buf); /* read buf */
INT8U readMsgBufID(INT32U *ID, INT8U *len, INT8U *buf); /* read buf with object ID */
INT8U checkReceive(void); /* if something received */
INT8U checkError(void); /* if something error */
INT32U getCanId(void); /* get can id when receive */
INT8U isRemoteRequest(void); /* get RR flag when receive */
INT8U isExtendedFrame(void); /* did we recieve 29bit frame? */
};
#endif
/*********************************************************************************************************
END FILE
*********************************************************************************************************/

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CAN/mcp_can_dfs.h Normal file
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/*
mcp_can_dfs.h
2012 Copyright (c) Seeed Technology Inc. All right reserved.
Author:Loovee
2014-1-16
Contributor:
Cory J. Fowler
Latonita
Woodward1
Mehtajaghvi
BykeBlast
TheRo0T
Tsipizic
ralfEdmund
Nathancheek
BlueAndi
Adlerweb
Btetz
Hurvajs
xboxpro1
The MIT License (MIT)
Copyright (c) 2013 Seeed Technology Inc.
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
*/
#ifndef _MCP2515DFS_H_
#define _MCP2515DFS_H_
#include <Arduino.h>
#include <SPI.h>
#include <inttypes.h>
#ifndef INT32U
#define INT32U unsigned long
#endif
#ifndef INT8U
#define INT8U byte
#endif
// if print debug information
#define DEBUG_MODE 0
/*
* Begin mt
*/
#define TIMEOUTVALUE 50
#define MCP_SIDH 0
#define MCP_SIDL 1
#define MCP_EID8 2
#define MCP_EID0 3
#define MCP_TXB_EXIDE_M 0x08 /* In TXBnSIDL */
#define MCP_DLC_MASK 0x0F /* 4 LSBits */
#define MCP_RTR_MASK 0x40 /* (1<<6) Bit 6 */
#define MCP_RXB_RX_ANY 0x60
#define MCP_RXB_RX_EXT 0x40
#define MCP_RXB_RX_STD 0x20
#define MCP_RXB_RX_STDEXT 0x00
#define MCP_RXB_RX_MASK 0x60
#define MCP_RXB_BUKT_MASK (1<<2)
/*
** Bits in the TXBnCTRL registers.
*/
#define MCP_TXB_TXBUFE_M 0x80
#define MCP_TXB_ABTF_M 0x40
#define MCP_TXB_MLOA_M 0x20
#define MCP_TXB_TXERR_M 0x10
#define MCP_TXB_TXREQ_M 0x08
#define MCP_TXB_TXIE_M 0x04
#define MCP_TXB_TXP10_M 0x03
#define MCP_TXB_RTR_M 0x40 /* In TXBnDLC */
#define MCP_RXB_IDE_M 0x08 /* In RXBnSIDL */
#define MCP_RXB_RTR_M 0x40 /* In RXBnDLC */
#define MCP_STAT_RXIF_MASK (0x03)
#define MCP_STAT_RX0IF (1<<0)
#define MCP_STAT_RX1IF (1<<1)
#define MCP_EFLG_RX1OVR (1<<7)
#define MCP_EFLG_RX0OVR (1<<6)
#define MCP_EFLG_TXBO (1<<5)
#define MCP_EFLG_TXEP (1<<4)
#define MCP_EFLG_RXEP (1<<3)
#define MCP_EFLG_TXWAR (1<<2)
#define MCP_EFLG_RXWAR (1<<1)
#define MCP_EFLG_EWARN (1<<0)
#define MCP_EFLG_ERRORMASK (0xF8) /* 5 MS-Bits */
/*
* Define MCP2515 register addresses
*/
#define MCP_RXF0SIDH 0x00
#define MCP_RXF0SIDL 0x01
#define MCP_RXF0EID8 0x02
#define MCP_RXF0EID0 0x03
#define MCP_RXF1SIDH 0x04
#define MCP_RXF1SIDL 0x05
#define MCP_RXF1EID8 0x06
#define MCP_RXF1EID0 0x07
#define MCP_RXF2SIDH 0x08
#define MCP_RXF2SIDL 0x09
#define MCP_RXF2EID8 0x0A
#define MCP_RXF2EID0 0x0B
#define MCP_CANSTAT 0x0E
#define MCP_CANCTRL 0x0F
#define MCP_RXF3SIDH 0x10
#define MCP_RXF3SIDL 0x11
#define MCP_RXF3EID8 0x12
#define MCP_RXF3EID0 0x13
#define MCP_RXF4SIDH 0x14
#define MCP_RXF4SIDL 0x15
#define MCP_RXF4EID8 0x16
#define MCP_RXF4EID0 0x17
#define MCP_RXF5SIDH 0x18
#define MCP_RXF5SIDL 0x19
#define MCP_RXF5EID8 0x1A
#define MCP_RXF5EID0 0x1B
#define MCP_TEC 0x1C
#define MCP_REC 0x1D
#define MCP_RXM0SIDH 0x20
#define MCP_RXM0SIDL 0x21
#define MCP_RXM0EID8 0x22
#define MCP_RXM0EID0 0x23
#define MCP_RXM1SIDH 0x24
#define MCP_RXM1SIDL 0x25
#define MCP_RXM1EID8 0x26
#define MCP_RXM1EID0 0x27
#define MCP_CNF3 0x28
#define MCP_CNF2 0x29
#define MCP_CNF1 0x2A
#define MCP_CANINTE 0x2B
#define MCP_CANINTF 0x2C
#define MCP_EFLG 0x2D
#define MCP_TXB0CTRL 0x30
#define MCP_TXB1CTRL 0x40
#define MCP_TXB2CTRL 0x50
#define MCP_RXB0CTRL 0x60
#define MCP_RXB0SIDH 0x61
#define MCP_RXB1CTRL 0x70
#define MCP_RXB1SIDH 0x71
#define MCP_TX_INT 0x1C // Enable all transmit interrup ts
#define MCP_TX01_INT 0x0C // Enable TXB0 and TXB1 interru pts
#define MCP_RX_INT 0x03 // Enable receive interrupts
#define MCP_NO_INT 0x00 // Disable all interrupts
#define MCP_TX01_MASK 0x14
#define MCP_TX_MASK 0x54
/*
* Define SPI Instruction Set
*/
#define MCP_WRITE 0x02
#define MCP_READ 0x03
#define MCP_BITMOD 0x05
#define MCP_LOAD_TX0 0x40
#define MCP_LOAD_TX1 0x42
#define MCP_LOAD_TX2 0x44
#define MCP_RTS_TX0 0x81
#define MCP_RTS_TX1 0x82
#define MCP_RTS_TX2 0x84
#define MCP_RTS_ALL 0x87
#define MCP_READ_RX0 0x90
#define MCP_READ_RX1 0x94
#define MCP_READ_STATUS 0xA0
#define MCP_RX_STATUS 0xB0
#define MCP_RESET 0xC0
/*
* CANCTRL Register Values
*/
#define MODE_NORMAL 0x00
#define MODE_SLEEP 0x20
#define MODE_LOOPBACK 0x40
#define MODE_LISTENONLY 0x60
#define MODE_CONFIG 0x80
#define MODE_POWERUP 0xE0
#define MODE_MASK 0xE0
#define ABORT_TX 0x10
#define MODE_ONESHOT 0x08
#define CLKOUT_ENABLE 0x04
#define CLKOUT_DISABLE 0x00
#define CLKOUT_PS1 0x00
#define CLKOUT_PS2 0x01
#define CLKOUT_PS4 0x02
#define CLKOUT_PS8 0x03
/*
* CNF1 Register Values
*/
#define SJW1 0x00
#define SJW2 0x40
#define SJW3 0x80
#define SJW4 0xC0
/*
* CNF2 Register Values
*/
#define BTLMODE 0x80
#define SAMPLE_1X 0x00
#define SAMPLE_3X 0x40
/*
* CNF3 Register Values
*/
#define SOF_ENABLE 0x80
#define SOF_DISABLE 0x00
#define WAKFIL_ENABLE 0x40
#define WAKFIL_DISABLE 0x00
/*
* CANINTF Register Bits
*/
#define MCP_RX0IF 0x01
#define MCP_RX1IF 0x02
#define MCP_TX0IF 0x04
#define MCP_TX1IF 0x08
#define MCP_TX2IF 0x10
#define MCP_ERRIF 0x20
#define MCP_WAKIF 0x40
#define MCP_MERRF 0x80
/*
* speed 16M
*/
#define MCP_16MHz_1000kBPS_CFG1 (0x00)
#define MCP_16MHz_1000kBPS_CFG2 (0xD0)
#define MCP_16MHz_1000kBPS_CFG3 (0x82)
#define MCP_16MHz_500kBPS_CFG1 (0x00)
#define MCP_16MHz_500kBPS_CFG2 (0xF0)
#define MCP_16MHz_500kBPS_CFG3 (0x86)
#define MCP_16MHz_250kBPS_CFG1 (0x41)
#define MCP_16MHz_250kBPS_CFG2 (0xF1)
#define MCP_16MHz_250kBPS_CFG3 (0x85)
#define MCP_16MHz_200kBPS_CFG1 (0x01)
#define MCP_16MHz_200kBPS_CFG2 (0xFA)
#define MCP_16MHz_200kBPS_CFG3 (0x87)
#define MCP_16MHz_125kBPS_CFG1 (0x03)
#define MCP_16MHz_125kBPS_CFG2 (0xF0)
#define MCP_16MHz_125kBPS_CFG3 (0x86)
#define MCP_16MHz_100kBPS_CFG1 (0x03)
#define MCP_16MHz_100kBPS_CFG2 (0xFA)
#define MCP_16MHz_100kBPS_CFG3 (0x87)
#define MCP_16MHz_95kBPS_CFG1 (0x03)
#define MCP_16MHz_95kBPS_CFG2 (0xAD)
#define MCP_16MHz_95kBPS_CFG3 (0x07)
#define MCP_16MHz_83k3BPS_CFG1 (0x03)
#define MCP_16MHz_83k3BPS_CFG2 (0xBE)
#define MCP_16MHz_83k3BPS_CFG3 (0x07)
#define MCP_16MHz_80kBPS_CFG1 (0x03)
#define MCP_16MHz_80kBPS_CFG2 (0xFF)
#define MCP_16MHz_80kBPS_CFG3 (0x87)
#define MCP_16MHz_50kBPS_CFG1 (0x07)
#define MCP_16MHz_50kBPS_CFG2 (0xFA)
#define MCP_16MHz_50kBPS_CFG3 (0x87)
#define MCP_16MHz_40kBPS_CFG1 (0x07)
#define MCP_16MHz_40kBPS_CFG2 (0xFF)
#define MCP_16MHz_40kBPS_CFG3 (0x87)
#define MCP_16MHz_33kBPS_CFG1 (0x09)
#define MCP_16MHz_33kBPS_CFG2 (0xBE)
#define MCP_16MHz_33kBPS_CFG3 (0x07)
#define MCP_16MHz_31k25BPS_CFG1 (0x0F)
#define MCP_16MHz_31k25BPS_CFG2 (0xF1)
#define MCP_16MHz_31k25BPS_CFG3 (0x85)
#define MCP_16MHz_25kBPS_CFG1 (0X0F)
#define MCP_16MHz_25kBPS_CFG2 (0XBA)
#define MCP_16MHz_25kBPS_CFG3 (0X07)
#define MCP_16MHz_20kBPS_CFG1 (0x0F)
#define MCP_16MHz_20kBPS_CFG2 (0xFF)
#define MCP_16MHz_20kBPS_CFG3 (0x87)
#define MCP_16MHz_10kBPS_CFG1 (0x1F)
#define MCP_16MHz_10kBPS_CFG2 (0xFF)
#define MCP_16MHz_10kBPS_CFG3 (0x87)
#define MCP_16MHz_5kBPS_CFG1 (0x3F)
#define MCP_16MHz_5kBPS_CFG2 (0xFF)
#define MCP_16MHz_5kBPS_CFG3 (0x87)
#define MCP_16MHz_666kBPS_CFG1 (0x00)
#define MCP_16MHz_666kBPS_CFG2 (0xA0)
#define MCP_16MHz_666kBPS_CFG3 (0x04)
#define MCPDEBUG (0)
#define MCPDEBUG_TXBUF (0)
#define MCP_N_TXBUFFERS (3)
#define MCP_RXBUF_0 (MCP_RXB0SIDH)
#define MCP_RXBUF_1 (MCP_RXB1SIDH)
//#define SPICS 10
#define MCP2515_SELECT() digitalWrite(SPICS, LOW)
#define MCP2515_UNSELECT() digitalWrite(SPICS, HIGH)
#define MCP2515_OK (0)
#define MCP2515_FAIL (1)
#define MCP_ALLTXBUSY (2)
#define CANDEBUG 1
#define CANUSELOOP 0
#define CANSENDTIMEOUT (200) /* milliseconds */
/*
* initial value of gCANAutoProcess
*/
#define CANAUTOPROCESS (1)
#define CANAUTOON (1)
#define CANAUTOOFF (0)
#define CAN_STDID (0)
#define CAN_EXTID (1)
#define CANDEFAULTIDENT (0x55CC)
#define CANDEFAULTIDENTEXT (CAN_EXTID)
#define CAN_5KBPS 1
#define CAN_10KBPS 2
#define CAN_20KBPS 3
#define CAN_25KBPS 4
#define CAN_31K25BPS 5
#define CAN_33KBPS 6
#define CAN_40KBPS 7
#define CAN_50KBPS 8
#define CAN_80KBPS 9
#define CAN_83K3BPS 10
#define CAN_95KBPS 11
#define CAN_100KBPS 12
#define CAN_125KBPS 13
#define CAN_200KBPS 14
#define CAN_250KBPS 15
#define CAN_500KBPS 16
#define CAN_666KBPS 17
#define CAN_1000KBPS 18
#define CAN_OK (0)
#define CAN_FAILINIT (1)
#define CAN_FAILTX (2)
#define CAN_MSGAVAIL (3)
#define CAN_NOMSG (4)
#define CAN_CTRLERROR (5)
#define CAN_GETTXBFTIMEOUT (6)
#define CAN_SENDMSGTIMEOUT (7)
#define CAN_FAIL (0xff)
#define CAN_MAX_CHAR_IN_MESSAGE (8)
#endif
/*********************************************************************************************************
END FILE
*********************************************************************************************************/

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// DHCP Library v0.3 - April 25, 2009
// Author: Jordan Terrell - blog.jordanterrell.com
#include "utility/w5100.h"
#include <string.h>
#include <stdlib.h>
#include "Dhcp.h"
#include "Arduino.h"
#include "utility/util.h"
int DhcpClass::beginWithDHCP(uint8_t *mac, unsigned long timeout, unsigned long responseTimeout)
{
_dhcpLeaseTime=0;
_dhcpT1=0;
_dhcpT2=0;
_timeout = timeout;
_responseTimeout = responseTimeout;
// zero out _dhcpMacAddr
memset(_dhcpMacAddr, 0, 6);
reset_DHCP_lease();
memcpy((void*)_dhcpMacAddr, (void*)mac, 6);
_dhcp_state = STATE_DHCP_START;
return request_DHCP_lease();
}
void DhcpClass::reset_DHCP_lease(){
// zero out _dhcpSubnetMask, _dhcpGatewayIp, _dhcpLocalIp, _dhcpDhcpServerIp, _dhcpDnsServerIp
memset(_dhcpLocalIp, 0, 20);
}
//return:0 on error, 1 if request is sent and response is received
int DhcpClass::request_DHCP_lease(){
uint8_t messageType = 0;
// Pick an initial transaction ID
_dhcpTransactionId = random(1UL, 2000UL);
_dhcpInitialTransactionId = _dhcpTransactionId;
_dhcpUdpSocket.stop();
if (_dhcpUdpSocket.begin(DHCP_CLIENT_PORT) == 0)
{
// Couldn't get a socket
return 0;
}
presend_DHCP();
int result = 0;
unsigned long startTime = millis();
while(_dhcp_state != STATE_DHCP_LEASED)
{
if(_dhcp_state == STATE_DHCP_START)
{
_dhcpTransactionId++;
send_DHCP_MESSAGE(DHCP_DISCOVER, ((millis() - startTime) / 1000));
_dhcp_state = STATE_DHCP_DISCOVER;
}
else if(_dhcp_state == STATE_DHCP_REREQUEST){
_dhcpTransactionId++;
send_DHCP_MESSAGE(DHCP_REQUEST, ((millis() - startTime)/1000));
_dhcp_state = STATE_DHCP_REQUEST;
}
else if(_dhcp_state == STATE_DHCP_DISCOVER)
{
uint32_t respId;
messageType = parseDHCPResponse(_responseTimeout, respId);
if(messageType == DHCP_OFFER)
{
// We'll use the transaction ID that the offer came with,
// rather than the one we were up to
_dhcpTransactionId = respId;
send_DHCP_MESSAGE(DHCP_REQUEST, ((millis() - startTime) / 1000));
_dhcp_state = STATE_DHCP_REQUEST;
}
}
else if(_dhcp_state == STATE_DHCP_REQUEST)
{
uint32_t respId;
messageType = parseDHCPResponse(_responseTimeout, respId);
if(messageType == DHCP_ACK)
{
_dhcp_state = STATE_DHCP_LEASED;
result = 1;
//use default lease time if we didn't get it
if(_dhcpLeaseTime == 0){
_dhcpLeaseTime = DEFAULT_LEASE;
}
// Calculate T1 & T2 if we didn't get it
if(_dhcpT1 == 0){
// T1 should be 50% of _dhcpLeaseTime
_dhcpT1 = _dhcpLeaseTime >> 1;
}
if(_dhcpT2 == 0){
// T2 should be 87.5% (7/8ths) of _dhcpLeaseTime
_dhcpT2 = _dhcpLeaseTime - (_dhcpLeaseTime >> 3);
}
_renewInSec = _dhcpT1;
_rebindInSec = _dhcpT2;
}
else if(messageType == DHCP_NAK)
_dhcp_state = STATE_DHCP_START;
}
if(messageType == 255)
{
messageType = 0;
_dhcp_state = STATE_DHCP_START;
}
if(result != 1 && ((millis() - startTime) > _timeout))
break;
}
// We're done with the socket now
_dhcpUdpSocket.stop();
_dhcpTransactionId++;
_lastCheckLeaseMillis = millis();
return result;
}
void DhcpClass::presend_DHCP()
{
}
void DhcpClass::send_DHCP_MESSAGE(uint8_t messageType, uint16_t secondsElapsed)
{
uint8_t buffer[32];
memset(buffer, 0, 32);
IPAddress dest_addr( 255, 255, 255, 255 ); // Broadcast address
if (-1 == _dhcpUdpSocket.beginPacket(dest_addr, DHCP_SERVER_PORT))
{
// FIXME Need to return errors
return;
}
buffer[0] = DHCP_BOOTREQUEST; // op
buffer[1] = DHCP_HTYPE10MB; // htype
buffer[2] = DHCP_HLENETHERNET; // hlen
buffer[3] = DHCP_HOPS; // hops
// xid
unsigned long xid = htonl(_dhcpTransactionId);
memcpy(buffer + 4, &(xid), 4);
// 8, 9 - seconds elapsed
buffer[8] = ((secondsElapsed & 0xff00) >> 8);
buffer[9] = (secondsElapsed & 0x00ff);
// flags
unsigned short flags = htons(DHCP_FLAGSBROADCAST);
memcpy(buffer + 10, &(flags), 2);
// ciaddr: already zeroed
// yiaddr: already zeroed
// siaddr: already zeroed
// giaddr: already zeroed
//put data in W5100 transmit buffer
_dhcpUdpSocket.write(buffer, 28);
memset(buffer, 0, 32); // clear local buffer
memcpy(buffer, _dhcpMacAddr, 6); // chaddr
//put data in W5100 transmit buffer
_dhcpUdpSocket.write(buffer, 16);
memset(buffer, 0, 32); // clear local buffer
// leave zeroed out for sname && file
// put in W5100 transmit buffer x 6 (192 bytes)
for(int i = 0; i < 6; i++) {
_dhcpUdpSocket.write(buffer, 32);
}
// OPT - Magic Cookie
buffer[0] = (uint8_t)((MAGIC_COOKIE >> 24)& 0xFF);
buffer[1] = (uint8_t)((MAGIC_COOKIE >> 16)& 0xFF);
buffer[2] = (uint8_t)((MAGIC_COOKIE >> 8)& 0xFF);
buffer[3] = (uint8_t)(MAGIC_COOKIE& 0xFF);
// OPT - message type
buffer[4] = dhcpMessageType;
buffer[5] = 0x01;
buffer[6] = messageType; //DHCP_REQUEST;
// OPT - client identifier
buffer[7] = dhcpClientIdentifier;
buffer[8] = 0x07;
buffer[9] = 0x01;
memcpy(buffer + 10, _dhcpMacAddr, 6);
// OPT - host name
buffer[16] = hostName;
buffer[17] = strlen(HOST_NAME) + 6; // length of hostname + last 3 bytes of mac address
strcpy((char*)&(buffer[18]), HOST_NAME);
printByte((char*)&(buffer[24]), _dhcpMacAddr[3]);
printByte((char*)&(buffer[26]), _dhcpMacAddr[4]);
printByte((char*)&(buffer[28]), _dhcpMacAddr[5]);
//put data in W5100 transmit buffer
_dhcpUdpSocket.write(buffer, 30);
if(messageType == DHCP_REQUEST)
{
buffer[0] = dhcpRequestedIPaddr;
buffer[1] = 0x04;
buffer[2] = _dhcpLocalIp[0];
buffer[3] = _dhcpLocalIp[1];
buffer[4] = _dhcpLocalIp[2];
buffer[5] = _dhcpLocalIp[3];
buffer[6] = dhcpServerIdentifier;
buffer[7] = 0x04;
buffer[8] = _dhcpDhcpServerIp[0];
buffer[9] = _dhcpDhcpServerIp[1];
buffer[10] = _dhcpDhcpServerIp[2];
buffer[11] = _dhcpDhcpServerIp[3];
//put data in W5100 transmit buffer
_dhcpUdpSocket.write(buffer, 12);
}
buffer[0] = dhcpParamRequest;
buffer[1] = 0x06;
buffer[2] = subnetMask;
buffer[3] = routersOnSubnet;
buffer[4] = dns;
buffer[5] = domainName;
buffer[6] = dhcpT1value;
buffer[7] = dhcpT2value;
buffer[8] = endOption;
//put data in W5100 transmit buffer
_dhcpUdpSocket.write(buffer, 9);
_dhcpUdpSocket.endPacket();
}
uint8_t DhcpClass::parseDHCPResponse(unsigned long responseTimeout, uint32_t& transactionId)
{
uint8_t type = 0;
uint8_t opt_len = 0;
unsigned long startTime = millis();
while(_dhcpUdpSocket.parsePacket() <= 0)
{
if((millis() - startTime) > responseTimeout)
{
return 255;
}
delay(50);
}
// start reading in the packet
RIP_MSG_FIXED fixedMsg;
_dhcpUdpSocket.read((uint8_t*)&fixedMsg, sizeof(RIP_MSG_FIXED));
if(fixedMsg.op == DHCP_BOOTREPLY && _dhcpUdpSocket.remotePort() == DHCP_SERVER_PORT)
{
transactionId = ntohl(fixedMsg.xid);
if(memcmp(fixedMsg.chaddr, _dhcpMacAddr, 6) != 0 || (transactionId < _dhcpInitialTransactionId) || (transactionId > _dhcpTransactionId))
{
// Need to read the rest of the packet here regardless
_dhcpUdpSocket.flush();
return 0;
}
memcpy(_dhcpLocalIp, fixedMsg.yiaddr, 4);
// Skip to the option part
// Doing this a byte at a time so we don't have to put a big buffer
// on the stack (as we don't have lots of memory lying around)
for (int i =0; i < (240 - (int)sizeof(RIP_MSG_FIXED)); i++)
{
_dhcpUdpSocket.read(); // we don't care about the returned byte
}
while (_dhcpUdpSocket.available() > 0)
{
switch (_dhcpUdpSocket.read())
{
case endOption :
break;
case padOption :
break;
case dhcpMessageType :
opt_len = _dhcpUdpSocket.read();
type = _dhcpUdpSocket.read();
break;
case subnetMask :
opt_len = _dhcpUdpSocket.read();
_dhcpUdpSocket.read(_dhcpSubnetMask, 4);
break;
case routersOnSubnet :
opt_len = _dhcpUdpSocket.read();
_dhcpUdpSocket.read(_dhcpGatewayIp, 4);
for (int i = 0; i < opt_len-4; i++)
{
_dhcpUdpSocket.read();
}
break;
case dns :
opt_len = _dhcpUdpSocket.read();
_dhcpUdpSocket.read(_dhcpDnsServerIp, 4);
for (int i = 0; i < opt_len-4; i++)
{
_dhcpUdpSocket.read();
}
break;
case dhcpServerIdentifier :
opt_len = _dhcpUdpSocket.read();
if ((_dhcpDhcpServerIp[0] == 0 && _dhcpDhcpServerIp[1] == 0 &&
_dhcpDhcpServerIp[2] == 0 && _dhcpDhcpServerIp[3] == 0) ||
IPAddress(_dhcpDhcpServerIp) == _dhcpUdpSocket.remoteIP())
{
_dhcpUdpSocket.read(_dhcpDhcpServerIp, sizeof(_dhcpDhcpServerIp));
}
else
{
// Skip over the rest of this option
while (opt_len--)
{
_dhcpUdpSocket.read();
}
}
break;
case dhcpT1value :
opt_len = _dhcpUdpSocket.read();
_dhcpUdpSocket.read((uint8_t*)&_dhcpT1, sizeof(_dhcpT1));
_dhcpT1 = ntohl(_dhcpT1);
break;
case dhcpT2value :
opt_len = _dhcpUdpSocket.read();
_dhcpUdpSocket.read((uint8_t*)&_dhcpT2, sizeof(_dhcpT2));
_dhcpT2 = ntohl(_dhcpT2);
break;
case dhcpIPaddrLeaseTime :
opt_len = _dhcpUdpSocket.read();
_dhcpUdpSocket.read((uint8_t*)&_dhcpLeaseTime, sizeof(_dhcpLeaseTime));
_dhcpLeaseTime = ntohl(_dhcpLeaseTime);
_renewInSec = _dhcpLeaseTime;
break;
default :
opt_len = _dhcpUdpSocket.read();
// Skip over the rest of this option
while (opt_len--)
{
_dhcpUdpSocket.read();
}
break;
}
}
}
// Need to skip to end of the packet regardless here
_dhcpUdpSocket.flush();
return type;
}
/*
returns:
0/DHCP_CHECK_NONE: nothing happened
1/DHCP_CHECK_RENEW_FAIL: renew failed
2/DHCP_CHECK_RENEW_OK: renew success
3/DHCP_CHECK_REBIND_FAIL: rebind fail
4/DHCP_CHECK_REBIND_OK: rebind success
*/
int DhcpClass::checkLease(){
int rc = DHCP_CHECK_NONE;
unsigned long now = millis();
unsigned long elapsed = now - _lastCheckLeaseMillis;
// if more then one sec passed, reduce the counters accordingly
if (elapsed >= 1000) {
// set the new timestamps
_lastCheckLeaseMillis = now - (elapsed % 1000);
elapsed = elapsed / 1000;
// decrease the counters by elapsed seconds
// we assume that the cycle time (elapsed) is fairly constant
// if the remainder is less than cycle time * 2
// do it early instead of late
if (_renewInSec < elapsed * 2)
_renewInSec = 0;
else
_renewInSec -= elapsed;
if (_rebindInSec < elapsed * 2)
_rebindInSec = 0;
else
_rebindInSec -= elapsed;
}
// if we have a lease but should renew, do it
if (_renewInSec == 0 &&_dhcp_state == STATE_DHCP_LEASED) {
_dhcp_state = STATE_DHCP_REREQUEST;
rc = 1 + request_DHCP_lease();
}
// if we have a lease or is renewing but should bind, do it
if (_rebindInSec == 0 && (_dhcp_state == STATE_DHCP_LEASED || _dhcp_state == STATE_DHCP_START)) {
// this should basically restart completely
_dhcp_state = STATE_DHCP_START;
reset_DHCP_lease();
rc = 3 + request_DHCP_lease();
}
return rc;
}
IPAddress DhcpClass::getLocalIp()
{
return IPAddress(_dhcpLocalIp);
}
IPAddress DhcpClass::getSubnetMask()
{
return IPAddress(_dhcpSubnetMask);
}
IPAddress DhcpClass::getGatewayIp()
{
return IPAddress(_dhcpGatewayIp);
}
IPAddress DhcpClass::getDhcpServerIp()
{
return IPAddress(_dhcpDhcpServerIp);
}
IPAddress DhcpClass::getDnsServerIp()
{
return IPAddress(_dhcpDnsServerIp);
}
void DhcpClass::printByte(char * buf, uint8_t n ) {
char *str = &buf[1];
buf[0]='0';
do {
unsigned long m = n;
n /= 16;
char c = m - 16 * n;
*str-- = c < 10 ? c + '0' : c + 'A' - 10;
} while(n);
}

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// DHCP Library v0.3 - April 25, 2009
// Author: Jordan Terrell - blog.jordanterrell.com
#ifndef Dhcp_h
#define Dhcp_h
#include "EthernetUdp.h"
/* DHCP state machine. */
#define STATE_DHCP_START 0
#define STATE_DHCP_DISCOVER 1
#define STATE_DHCP_REQUEST 2
#define STATE_DHCP_LEASED 3
#define STATE_DHCP_REREQUEST 4
#define STATE_DHCP_RELEASE 5
#define DHCP_FLAGSBROADCAST 0x8000
/* UDP port numbers for DHCP */
#define DHCP_SERVER_PORT 67 /* from server to client */
#define DHCP_CLIENT_PORT 68 /* from client to server */
/* DHCP message OP code */
#define DHCP_BOOTREQUEST 1
#define DHCP_BOOTREPLY 2
/* DHCP message type */
#define DHCP_DISCOVER 1
#define DHCP_OFFER 2
#define DHCP_REQUEST 3
#define DHCP_DECLINE 4
#define DHCP_ACK 5
#define DHCP_NAK 6
#define DHCP_RELEASE 7
#define DHCP_INFORM 8
#define DHCP_HTYPE10MB 1
#define DHCP_HTYPE100MB 2
#define DHCP_HLENETHERNET 6
#define DHCP_HOPS 0
#define DHCP_SECS 0
#define MAGIC_COOKIE 0x63825363
#define MAX_DHCP_OPT 16
#define HOST_NAME "WIZnet"
#define DEFAULT_LEASE (900) //default lease time in seconds
#define DHCP_CHECK_NONE (0)
#define DHCP_CHECK_RENEW_FAIL (1)
#define DHCP_CHECK_RENEW_OK (2)
#define DHCP_CHECK_REBIND_FAIL (3)
#define DHCP_CHECK_REBIND_OK (4)
enum
{
padOption = 0,
subnetMask = 1,
timerOffset = 2,
routersOnSubnet = 3,
/* timeServer = 4,
nameServer = 5,*/
dns = 6,
/*logServer = 7,
cookieServer = 8,
lprServer = 9,
impressServer = 10,
resourceLocationServer = 11,*/
hostName = 12,
/*bootFileSize = 13,
meritDumpFile = 14,*/
domainName = 15,
/*swapServer = 16,
rootPath = 17,
extentionsPath = 18,
IPforwarding = 19,
nonLocalSourceRouting = 20,
policyFilter = 21,
maxDgramReasmSize = 22,
defaultIPTTL = 23,
pathMTUagingTimeout = 24,
pathMTUplateauTable = 25,
ifMTU = 26,
allSubnetsLocal = 27,
broadcastAddr = 28,
performMaskDiscovery = 29,
maskSupplier = 30,
performRouterDiscovery = 31,
routerSolicitationAddr = 32,
staticRoute = 33,
trailerEncapsulation = 34,
arpCacheTimeout = 35,
ethernetEncapsulation = 36,
tcpDefaultTTL = 37,
tcpKeepaliveInterval = 38,
tcpKeepaliveGarbage = 39,
nisDomainName = 40,
nisServers = 41,
ntpServers = 42,
vendorSpecificInfo = 43,
netBIOSnameServer = 44,
netBIOSdgramDistServer = 45,
netBIOSnodeType = 46,
netBIOSscope = 47,
xFontServer = 48,
xDisplayManager = 49,*/
dhcpRequestedIPaddr = 50,
dhcpIPaddrLeaseTime = 51,
/*dhcpOptionOverload = 52,*/
dhcpMessageType = 53,
dhcpServerIdentifier = 54,
dhcpParamRequest = 55,
/*dhcpMsg = 56,
dhcpMaxMsgSize = 57,*/
dhcpT1value = 58,
dhcpT2value = 59,
/*dhcpClassIdentifier = 60,*/
dhcpClientIdentifier = 61,
endOption = 255
};
typedef struct __attribute__((packed)) _RIP_MSG_FIXED
{
uint8_t op;
uint8_t htype;
uint8_t hlen;
uint8_t hops;
uint32_t xid;
uint16_t secs;
uint16_t flags;
uint8_t ciaddr[4];
uint8_t yiaddr[4];
uint8_t siaddr[4];
uint8_t giaddr[4];
uint8_t chaddr[6];
}RIP_MSG_FIXED;
class DhcpClass {
private:
uint32_t _dhcpInitialTransactionId;
uint32_t _dhcpTransactionId;
uint8_t _dhcpMacAddr[6];
uint8_t _dhcpLocalIp[4];
uint8_t _dhcpSubnetMask[4];
uint8_t _dhcpGatewayIp[4];
uint8_t _dhcpDhcpServerIp[4];
uint8_t _dhcpDnsServerIp[4];
uint32_t _dhcpLeaseTime;
uint32_t _dhcpT1, _dhcpT2;
unsigned long _renewInSec;
unsigned long _rebindInSec;
unsigned long _timeout;
unsigned long _responseTimeout;
unsigned long _lastCheckLeaseMillis;
uint8_t _dhcp_state;
EthernetUDP _dhcpUdpSocket;
int request_DHCP_lease();
void reset_DHCP_lease();
void presend_DHCP();
void send_DHCP_MESSAGE(uint8_t, uint16_t);
void printByte(char *, uint8_t);
uint8_t parseDHCPResponse(unsigned long responseTimeout, uint32_t& transactionId);
public:
IPAddress getLocalIp();
IPAddress getSubnetMask();
IPAddress getGatewayIp();
IPAddress getDhcpServerIp();
IPAddress getDnsServerIp();
int beginWithDHCP(uint8_t *, unsigned long timeout = 60000, unsigned long responseTimeout = 4000);
int checkLease();
};
#endif

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// Arduino DNS client for WizNet5100-based Ethernet shield
// (c) Copyright 2009-2010 MCQN Ltd.
// Released under Apache License, version 2.0
#include "utility/w5100.h"
#include "EthernetUdp.h"
#include "utility/util.h"
#include "Dns.h"
#include <string.h>
//#include <stdlib.h>
#include "Arduino.h"
#define SOCKET_NONE 255
// Various flags and header field values for a DNS message
#define UDP_HEADER_SIZE 8
#define DNS_HEADER_SIZE 12
#define TTL_SIZE 4
#define QUERY_FLAG (0)
#define RESPONSE_FLAG (1<<15)
#define QUERY_RESPONSE_MASK (1<<15)
#define OPCODE_STANDARD_QUERY (0)
#define OPCODE_INVERSE_QUERY (1<<11)
#define OPCODE_STATUS_REQUEST (2<<11)
#define OPCODE_MASK (15<<11)
#define AUTHORITATIVE_FLAG (1<<10)
#define TRUNCATION_FLAG (1<<9)
#define RECURSION_DESIRED_FLAG (1<<8)
#define RECURSION_AVAILABLE_FLAG (1<<7)
#define RESP_NO_ERROR (0)
#define RESP_FORMAT_ERROR (1)
#define RESP_SERVER_FAILURE (2)
#define RESP_NAME_ERROR (3)
#define RESP_NOT_IMPLEMENTED (4)
#define RESP_REFUSED (5)
#define RESP_MASK (15)
#define TYPE_A (0x0001)
#define CLASS_IN (0x0001)
#define LABEL_COMPRESSION_MASK (0xC0)
// Port number that DNS servers listen on
#define DNS_PORT 53
// Possible return codes from ProcessResponse
#define SUCCESS 1
#define TIMED_OUT -1
#define INVALID_SERVER -2
#define TRUNCATED -3
#define INVALID_RESPONSE -4
void DNSClient::begin(const IPAddress& aDNSServer)
{
iDNSServer = aDNSServer;
iRequestId = 0;
}
int DNSClient::inet_aton(const char* address, IPAddress& result)
{
// TODO: add support for "a", "a.b", "a.b.c" formats
uint16_t acc = 0; // Accumulator
uint8_t dots = 0;
while (*address)
{
char c = *address++;
if (c >= '0' && c <= '9')
{
acc = acc * 10 + (c - '0');
if (acc > 255) {
// Value out of [0..255] range
return 0;
}
}
else if (c == '.')
{
if (dots == 3) {
// Too much dots (there must be 3 dots)
return 0;
}
result[dots++] = acc;
acc = 0;
}
else
{
// Invalid char
return 0;
}
}
if (dots != 3) {
// Too few dots (there must be 3 dots)
return 0;
}
result[3] = acc;
return 1;
}
int DNSClient::getHostByName(const char* aHostname, IPAddress& aResult)
{
int ret =0;
// See if it's a numeric IP address
if (inet_aton(aHostname, aResult))
{
// It is, our work here is done
return 1;
}
// Check we've got a valid DNS server to use
if (iDNSServer == INADDR_NONE)
{
return INVALID_SERVER;
}
// Find a socket to use
if (iUdp.begin(1024+(millis() & 0xF)) == 1)
{
// Try up to three times
int retries = 0;
// while ((retries < 3) && (ret <= 0))
{
// Send DNS request
ret = iUdp.beginPacket(iDNSServer, DNS_PORT);
if (ret != 0)
{
// Now output the request data
ret = BuildRequest(aHostname);
if (ret != 0)
{
// And finally send the request
ret = iUdp.endPacket();
if (ret != 0)
{
// Now wait for a response
int wait_retries = 0;
ret = TIMED_OUT;
while ((wait_retries < 3) && (ret == TIMED_OUT))
{
ret = ProcessResponse(5000, aResult);
wait_retries++;
}
}
}
}
retries++;
}
// We're done with the socket now
iUdp.stop();
}
return ret;
}
uint16_t DNSClient::BuildRequest(const char* aName)
{
// Build header
// 1 1 1 1 1 1
// 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5
// +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
// | ID |
// +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
// |QR| Opcode |AA|TC|RD|RA| Z | RCODE |
// +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
// | QDCOUNT |
// +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
// | ANCOUNT |
// +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
// | NSCOUNT |
// +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
// | ARCOUNT |
// +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
// As we only support one request at a time at present, we can simplify
// some of this header
iRequestId = millis(); // generate a random ID
uint16_t twoByteBuffer;
// FIXME We should also check that there's enough space available to write to, rather
// FIXME than assume there's enough space (as the code does at present)
uint16_t _id = htons(iRequestId);
iUdp.write((uint8_t*)&_id, sizeof(_id));
twoByteBuffer = htons(QUERY_FLAG | OPCODE_STANDARD_QUERY | RECURSION_DESIRED_FLAG);
iUdp.write((uint8_t*)&twoByteBuffer, sizeof(twoByteBuffer));
twoByteBuffer = htons(1); // One question record
iUdp.write((uint8_t*)&twoByteBuffer, sizeof(twoByteBuffer));
twoByteBuffer = 0; // Zero answer records
iUdp.write((uint8_t*)&twoByteBuffer, sizeof(twoByteBuffer));
iUdp.write((uint8_t*)&twoByteBuffer, sizeof(twoByteBuffer));
// and zero additional records
iUdp.write((uint8_t*)&twoByteBuffer, sizeof(twoByteBuffer));
// Build question
const char* start =aName;
const char* end =start;
uint8_t len;
// Run through the name being requested
while (*end)
{
// Find out how long this section of the name is
end = start;
while (*end && (*end != '.') )
{
end++;
}
if (end-start > 0)
{
// Write out the size of this section
len = end-start;
iUdp.write(&len, sizeof(len));
// And then write out the section
iUdp.write((uint8_t*)start, end-start);
}
start = end+1;
}
// We've got to the end of the question name, so
// terminate it with a zero-length section
len = 0;
iUdp.write(&len, sizeof(len));
// Finally the type and class of question
twoByteBuffer = htons(TYPE_A);
iUdp.write((uint8_t*)&twoByteBuffer, sizeof(twoByteBuffer));
twoByteBuffer = htons(CLASS_IN); // Internet class of question
iUdp.write((uint8_t*)&twoByteBuffer, sizeof(twoByteBuffer));
// Success! Everything buffered okay
return 1;
}
uint16_t DNSClient::ProcessResponse(uint16_t aTimeout, IPAddress& aAddress)
{
uint32_t startTime = millis();
// Wait for a response packet
while(iUdp.parsePacket() <= 0)
{
if((millis() - startTime) > aTimeout)
return TIMED_OUT;
delay(50);
}
// We've had a reply!
// Read the UDP header
uint8_t header[DNS_HEADER_SIZE]; // Enough space to reuse for the DNS header
// Check that it's a response from the right server and the right port
if ( (iDNSServer != iUdp.remoteIP()) ||
(iUdp.remotePort() != DNS_PORT) )
{
// It's not from who we expected
return INVALID_SERVER;
}
// Read through the rest of the response
if (iUdp.available() < DNS_HEADER_SIZE)
{
return TRUNCATED;
}
iUdp.read(header, DNS_HEADER_SIZE);
uint16_t header_flags = word(header[2], header[3]);
// Check that it's a response to this request
if ( (iRequestId != word(header[0], header[1])) ||
((header_flags & QUERY_RESPONSE_MASK) != (uint16_t)RESPONSE_FLAG) )
{
// Mark the entire packet as read
iUdp.flush();
return INVALID_RESPONSE;
}
// Check for any errors in the response (or in our request)
// although we don't do anything to get round these
if ( (header_flags & TRUNCATION_FLAG) || (header_flags & RESP_MASK) )
{
// Mark the entire packet as read
iUdp.flush();
return -5; //INVALID_RESPONSE;
}
// And make sure we've got (at least) one answer
uint16_t answerCount = word(header[6], header[7]);
if (answerCount == 0 )
{
// Mark the entire packet as read
iUdp.flush();
return -6; //INVALID_RESPONSE;
}
// Skip over any questions
for (uint16_t i =0; i < word(header[4], header[5]); i++)
{
// Skip over the name
uint8_t len;
do
{
iUdp.read(&len, sizeof(len));
if (len > 0)
{
// Don't need to actually read the data out for the string, just
// advance ptr to beyond it
while(len--)
{
iUdp.read(); // we don't care about the returned byte
}
}
} while (len != 0);
// Now jump over the type and class
for (int i =0; i < 4; i++)
{
iUdp.read(); // we don't care about the returned byte
}
}
// Now we're up to the bit we're interested in, the answer
// There might be more than one answer (although we'll just use the first
// type A answer) and some authority and additional resource records but
// we're going to ignore all of them.
for (uint16_t i =0; i < answerCount; i++)
{
// Skip the name
uint8_t len;
do
{
iUdp.read(&len, sizeof(len));
if ((len & LABEL_COMPRESSION_MASK) == 0)
{
// It's just a normal label
if (len > 0)
{
// And it's got a length
// Don't need to actually read the data out for the string,
// just advance ptr to beyond it
while(len--)
{
iUdp.read(); // we don't care about the returned byte
}
}
}
else
{
// This is a pointer to a somewhere else in the message for the
// rest of the name. We don't care about the name, and RFC1035
// says that a name is either a sequence of labels ended with a
// 0 length octet or a pointer or a sequence of labels ending in
// a pointer. Either way, when we get here we're at the end of
// the name
// Skip over the pointer
iUdp.read(); // we don't care about the returned byte
// And set len so that we drop out of the name loop
len = 0;
}
} while (len != 0);
// Check the type and class
uint16_t answerType;
uint16_t answerClass;
iUdp.read((uint8_t*)&answerType, sizeof(answerType));
iUdp.read((uint8_t*)&answerClass, sizeof(answerClass));
// Ignore the Time-To-Live as we don't do any caching
for (int i =0; i < TTL_SIZE; i++)
{
iUdp.read(); // we don't care about the returned byte
}
// And read out the length of this answer
// Don't need header_flags anymore, so we can reuse it here
iUdp.read((uint8_t*)&header_flags, sizeof(header_flags));
if ( (htons(answerType) == TYPE_A) && (htons(answerClass) == CLASS_IN) )
{
if (htons(header_flags) != 4)
{
// It's a weird size
// Mark the entire packet as read
iUdp.flush();
return -9;//INVALID_RESPONSE;
}
iUdp.read(aAddress.raw_address(), 4);
return SUCCESS;
}
else
{
// This isn't an answer type we're after, move onto the next one
for (uint16_t i =0; i < htons(header_flags); i++)
{
iUdp.read(); // we don't care about the returned byte
}
}
}
// Mark the entire packet as read
iUdp.flush();
// If we get here then we haven't found an answer
return -10;//INVALID_RESPONSE;
}

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// Arduino DNS client for WizNet5100-based Ethernet shield
// (c) Copyright 2009-2010 MCQN Ltd.
// Released under Apache License, version 2.0
#ifndef DNSClient_h
#define DNSClient_h
#include <EthernetUdp.h>
class DNSClient
{
public:
// ctor
void begin(const IPAddress& aDNSServer);
/** Convert a numeric IP address string into a four-byte IP address.
@param aIPAddrString IP address to convert
@param aResult IPAddress structure to store the returned IP address
@result 1 if aIPAddrString was successfully converted to an IP address,
else error code
*/
int inet_aton(const char *aIPAddrString, IPAddress& aResult);
/** Resolve the given hostname to an IP address.
@param aHostname Name to be resolved
@param aResult IPAddress structure to store the returned IP address
@result 1 if aIPAddrString was successfully converted to an IP address,
else error code
*/
int getHostByName(const char* aHostname, IPAddress& aResult);
protected:
uint16_t BuildRequest(const char* aName);
uint16_t ProcessResponse(uint16_t aTimeout, IPAddress& aAddress);
IPAddress iDNSServer;
uint16_t iRequestId;
EthernetUDP iUdp;
};
#endif

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#include "utility/w5100.h"
#include "Ethernet.h"
#include "Dhcp.h"
// XXX: don't make assumptions about the value of MAX_SOCK_NUM.
uint8_t EthernetClass::_state[MAX_SOCK_NUM] = {
0, 0, 0, 0 };
uint16_t EthernetClass::_server_port[MAX_SOCK_NUM] = {
0, 0, 0, 0 };
int EthernetClass::begin(uint8_t *mac_address, unsigned long timeout, unsigned long responseTimeout)
{
static DhcpClass s_dhcp;
_dhcp = &s_dhcp;
// Initialise the basic info
W5100.init();
SPI.beginTransaction(SPI_ETHERNET_SETTINGS);
W5100.setMACAddress(mac_address);
W5100.setIPAddress(IPAddress(0,0,0,0).raw_address());
SPI.endTransaction();
// Now try to get our config info from a DHCP server
int ret = _dhcp->beginWithDHCP(mac_address, timeout, responseTimeout);
if(ret == 1)
{
// We've successfully found a DHCP server and got our configuration info, so set things
// accordingly
SPI.beginTransaction(SPI_ETHERNET_SETTINGS);
W5100.setIPAddress(_dhcp->getLocalIp().raw_address());
W5100.setGatewayIp(_dhcp->getGatewayIp().raw_address());
W5100.setSubnetMask(_dhcp->getSubnetMask().raw_address());
SPI.endTransaction();
_dnsServerAddress = _dhcp->getDnsServerIp();
}
return ret;
}
void EthernetClass::begin(uint8_t *mac_address, IPAddress local_ip)
{
// Assume the DNS server will be the machine on the same network as the local IP
// but with last octet being '1'
IPAddress dns_server = local_ip;
dns_server[3] = 1;
begin(mac_address, local_ip, dns_server);
}
void EthernetClass::begin(uint8_t *mac_address, IPAddress local_ip, IPAddress dns_server)
{
// Assume the gateway will be the machine on the same network as the local IP
// but with last octet being '1'
IPAddress gateway = local_ip;
gateway[3] = 1;
begin(mac_address, local_ip, dns_server, gateway);
}
void EthernetClass::begin(uint8_t *mac_address, IPAddress local_ip, IPAddress dns_server, IPAddress gateway)
{
IPAddress subnet(255, 255, 255, 0);
begin(mac_address, local_ip, dns_server, gateway, subnet);
}
void EthernetClass::begin(uint8_t *mac, IPAddress local_ip, IPAddress dns_server, IPAddress gateway, IPAddress subnet)
{
W5100.init();
SPI.beginTransaction(SPI_ETHERNET_SETTINGS);
W5100.setMACAddress(mac);
W5100.setIPAddress(local_ip.raw_address());
W5100.setGatewayIp(gateway.raw_address());
W5100.setSubnetMask(subnet.raw_address());
SPI.endTransaction();
_dnsServerAddress = dns_server;
}
int EthernetClass::maintain(){
int rc = DHCP_CHECK_NONE;
if(_dhcp != NULL){
//we have a pointer to dhcp, use it
rc = _dhcp->checkLease();
switch ( rc ){
case DHCP_CHECK_NONE:
//nothing done
break;
case DHCP_CHECK_RENEW_OK:
case DHCP_CHECK_REBIND_OK:
//we might have got a new IP.
SPI.beginTransaction(SPI_ETHERNET_SETTINGS);
W5100.setIPAddress(_dhcp->getLocalIp().raw_address());
W5100.setGatewayIp(_dhcp->getGatewayIp().raw_address());
W5100.setSubnetMask(_dhcp->getSubnetMask().raw_address());
SPI.endTransaction();
_dnsServerAddress = _dhcp->getDnsServerIp();
break;
default:
//this is actually a error, it will retry though
break;
}
}
return rc;
}
IPAddress EthernetClass::localIP()
{
IPAddress ret;
SPI.beginTransaction(SPI_ETHERNET_SETTINGS);
W5100.getIPAddress(ret.raw_address());
SPI.endTransaction();
return ret;
}
IPAddress EthernetClass::subnetMask()
{
IPAddress ret;
SPI.beginTransaction(SPI_ETHERNET_SETTINGS);
W5100.getSubnetMask(ret.raw_address());
SPI.endTransaction();
return ret;
}
IPAddress EthernetClass::gatewayIP()
{
IPAddress ret;
SPI.beginTransaction(SPI_ETHERNET_SETTINGS);
W5100.getGatewayIp(ret.raw_address());
SPI.endTransaction();
return ret;
}
IPAddress EthernetClass::dnsServerIP()
{
return _dnsServerAddress;
}
EthernetClass Ethernet;

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#ifndef ethernet_h
#define ethernet_h
#include <inttypes.h>
//#include "w5100.h"
#include "IPAddress.h"
#include "EthernetClient.h"
#include "EthernetServer.h"
#include "Dhcp.h"
#define MAX_SOCK_NUM 4
class EthernetClass {
private:
IPAddress _dnsServerAddress;
DhcpClass* _dhcp;
public:
static uint8_t _state[MAX_SOCK_NUM];
static uint16_t _server_port[MAX_SOCK_NUM];
// Initialise the Ethernet shield to use the provided MAC address and gain the rest of the
// configuration through DHCP.
// Returns 0 if the DHCP configuration failed, and 1 if it succeeded
int begin(uint8_t *mac_address, unsigned long timeout = 60000, unsigned long responseTimeout = 4000);
void begin(uint8_t *mac_address, IPAddress local_ip);
void begin(uint8_t *mac_address, IPAddress local_ip, IPAddress dns_server);
void begin(uint8_t *mac_address, IPAddress local_ip, IPAddress dns_server, IPAddress gateway);
void begin(uint8_t *mac_address, IPAddress local_ip, IPAddress dns_server, IPAddress gateway, IPAddress subnet);
int maintain();
IPAddress localIP();
IPAddress subnetMask();
IPAddress gatewayIP();
IPAddress dnsServerIP();
friend class EthernetClient;
friend class EthernetServer;
};
extern EthernetClass Ethernet;
#endif

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#include "utility/w5100.h"
#include "utility/socket.h"
extern "C" {
#include "string.h"
}
#include "Arduino.h"
#include "Ethernet.h"
#include "EthernetClient.h"
#include "EthernetServer.h"
#include "Dns.h"
uint16_t EthernetClient::_srcport = 49152; //Use IANA recommended ephemeral port range 49152-65535
EthernetClient::EthernetClient() : _sock(MAX_SOCK_NUM) {
}
EthernetClient::EthernetClient(uint8_t sock) : _sock(sock) {
}
int EthernetClient::connect(const char* host, uint16_t port) {
// Look up the host first
int ret = 0;
DNSClient dns;
IPAddress remote_addr;
dns.begin(Ethernet.dnsServerIP());
ret = dns.getHostByName(host, remote_addr);
if (ret == 1) {
return connect(remote_addr, port);
} else {
return ret;
}
}
int EthernetClient::connect(IPAddress ip, uint16_t port) {
if (_sock != MAX_SOCK_NUM)
return 0;
for (int i = 0; i < MAX_SOCK_NUM; i++) {
uint8_t s = socketStatus(i);
if (s == SnSR::CLOSED || s == SnSR::FIN_WAIT || s == SnSR::CLOSE_WAIT) {
_sock = i;
break;
}
}
if (_sock == MAX_SOCK_NUM)
return 0;
_srcport++;
if (_srcport == 0) _srcport = 49152; //Use IANA recommended ephemeral port range 49152-65535
socket(_sock, SnMR::TCP, _srcport, 0);
if (!::connect(_sock, rawIPAddress(ip), port)) {
_sock = MAX_SOCK_NUM;
return 0;
}
while (status() != SnSR::ESTABLISHED) {
delay(1);
if (status() == SnSR::CLOSED) {
_sock = MAX_SOCK_NUM;
return 0;
}
}
return 1;
}
size_t EthernetClient::write(uint8_t b) {
return write(&b, 1);
}
size_t EthernetClient::write(const uint8_t *buf, size_t size) {
if (_sock == MAX_SOCK_NUM) {
setWriteError();
return 0;
}
if (!send(_sock, buf, size)) {
setWriteError();
return 0;
}
return size;
}
int EthernetClient::available() {
if (_sock != MAX_SOCK_NUM)
return recvAvailable(_sock);
return 0;
}
int EthernetClient::read() {
uint8_t b;
if ( recv(_sock, &b, 1) > 0 )
{
// recv worked
return b;
}
else
{
// No data available
return -1;
}
}
int EthernetClient::read(uint8_t *buf, size_t size) {
return recv(_sock, buf, size);
}
int EthernetClient::peek() {
uint8_t b;
// Unlike recv, peek doesn't check to see if there's any data available, so we must
if (!available())
return -1;
::peek(_sock, &b);
return b;
}
void EthernetClient::flush() {
::flush(_sock);
}
void EthernetClient::stop() {
if (_sock == MAX_SOCK_NUM)
return;
// attempt to close the connection gracefully (send a FIN to other side)
disconnect(_sock);
unsigned long start = millis();
// wait up to a second for the connection to close
uint8_t s;
do {
s = status();
if (s == SnSR::CLOSED)
break; // exit the loop
delay(1);
} while (millis() - start < 1000);
// if it hasn't closed, close it forcefully
if (s != SnSR::CLOSED)
close(_sock);
EthernetClass::_server_port[_sock] = 0;
_sock = MAX_SOCK_NUM;
}
uint8_t EthernetClient::connected() {
if (_sock == MAX_SOCK_NUM) return 0;
uint8_t s = status();
return !(s == SnSR::LISTEN || s == SnSR::CLOSED || s == SnSR::FIN_WAIT ||
(s == SnSR::CLOSE_WAIT && !available()));
}
uint8_t EthernetClient::status() {
if (_sock == MAX_SOCK_NUM) return SnSR::CLOSED;
return socketStatus(_sock);
}
// the next function allows us to use the client returned by
// EthernetServer::available() as the condition in an if-statement.
EthernetClient::operator bool() {
return _sock != MAX_SOCK_NUM;
}
bool EthernetClient::operator==(const EthernetClient& rhs) {
return _sock == rhs._sock && _sock != MAX_SOCK_NUM && rhs._sock != MAX_SOCK_NUM;
}
uint8_t EthernetClient::getSocketNumber() {
return _sock;
}

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#ifndef ethernetclient_h
#define ethernetclient_h
#include "Arduino.h"
#include "Print.h"
#include "Client.h"
#include "IPAddress.h"
class EthernetClient : public Client {
public:
EthernetClient();
EthernetClient(uint8_t sock);
uint8_t status();
virtual int connect(IPAddress ip, uint16_t port);
virtual int connect(const char *host, uint16_t port);
virtual size_t write(uint8_t);
virtual size_t write(const uint8_t *buf, size_t size);
virtual int available();
virtual int read();
virtual int read(uint8_t *buf, size_t size);
virtual int peek();
virtual void flush();
virtual void stop();
virtual uint8_t connected();
virtual operator bool();
virtual bool operator==(const bool value) { return bool() == value; }
virtual bool operator!=(const bool value) { return bool() != value; }
virtual bool operator==(const EthernetClient&);
virtual bool operator!=(const EthernetClient& rhs) { return !this->operator==(rhs); };
uint8_t getSocketNumber();
friend class EthernetServer;
using Print::write;
private:
static uint16_t _srcport;
uint8_t _sock;
};
#endif

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#include "utility/w5100.h"
#include "utility/socket.h"
extern "C" {
#include "string.h"
}
#include "Ethernet.h"
#include "EthernetClient.h"
#include "EthernetServer.h"
EthernetServer::EthernetServer(uint16_t port)
{
_port = port;
}
void EthernetServer::begin()
{
for (int sock = 0; sock < MAX_SOCK_NUM; sock++) {
EthernetClient client(sock);
if (client.status() == SnSR::CLOSED) {
socket(sock, SnMR::TCP, _port, 0);
listen(sock);
EthernetClass::_server_port[sock] = _port;
break;
}
}
}
void EthernetServer::accept()
{
int listening = 0;
for (int sock = 0; sock < MAX_SOCK_NUM; sock++) {
EthernetClient client(sock);
if (EthernetClass::_server_port[sock] == _port) {
if (client.status() == SnSR::LISTEN) {
listening = 1;
}
else if (client.status() == SnSR::CLOSE_WAIT && !client.available()) {
client.stop();
}
}
}
if (!listening) {
begin();
}
}
EthernetClient EthernetServer::available()
{
accept();
for (int sock = 0; sock < MAX_SOCK_NUM; sock++) {
EthernetClient client(sock);
if (EthernetClass::_server_port[sock] == _port) {
uint8_t s = client.status();
if (s == SnSR::ESTABLISHED || s == SnSR::CLOSE_WAIT) {
if (client.available()) {
// XXX: don't always pick the lowest numbered socket.
return client;
}
}
}
}
return EthernetClient(MAX_SOCK_NUM);
}
size_t EthernetServer::write(uint8_t b)
{
return write(&b, 1);
}
size_t EthernetServer::write(const uint8_t *buffer, size_t size)
{
size_t n = 0;
accept();
for (int sock = 0; sock < MAX_SOCK_NUM; sock++) {
EthernetClient client(sock);
if (EthernetClass::_server_port[sock] == _port &&
client.status() == SnSR::ESTABLISHED) {
n += client.write(buffer, size);
}
}
return n;
}

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#ifndef ethernetserver_h
#define ethernetserver_h
#include "Server.h"
class EthernetClient;
class EthernetServer :
public Server {
private:
uint16_t _port;
void accept();
public:
EthernetServer(uint16_t);
EthernetClient available();
virtual void begin();
virtual size_t write(uint8_t);
virtual size_t write(const uint8_t *buf, size_t size);
using Print::write;
};
#endif

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/*
* Udp.cpp: Library to send/receive UDP packets with the Arduino ethernet shield.
* This version only offers minimal wrapping of socket.c/socket.h
* Drop Udp.h/.cpp into the Ethernet library directory at hardware/libraries/Ethernet/
*
* MIT License:
* Copyright (c) 2008 Bjoern Hartmann
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*
* bjoern@cs.stanford.edu 12/30/2008
*/
#include "utility/w5100.h"
#include "utility/socket.h"
#include "Ethernet.h"
#include "Udp.h"
#include "Dns.h"
/* Constructor */
EthernetUDP::EthernetUDP() : _sock(MAX_SOCK_NUM) {}
/* Start EthernetUDP socket, listening at local port PORT */
uint8_t EthernetUDP::begin(uint16_t port) {
if (_sock != MAX_SOCK_NUM)
return 0;
for (int i = 0; i < MAX_SOCK_NUM; i++) {
uint8_t s = socketStatus(i);
if (s == SnSR::CLOSED || s == SnSR::FIN_WAIT) {
_sock = i;
break;
}
}
if (_sock == MAX_SOCK_NUM)
return 0;
_port = port;
_remaining = 0;
socket(_sock, SnMR::UDP, _port, 0);
return 1;
}
/* return number of bytes available in the current packet,
will return zero if parsePacket hasn't been called yet */
int EthernetUDP::available() {
return _remaining;
}
/* Release any resources being used by this EthernetUDP instance */
void EthernetUDP::stop()
{
if (_sock == MAX_SOCK_NUM)
return;
close(_sock);
EthernetClass::_server_port[_sock] = 0;
_sock = MAX_SOCK_NUM;
}
int EthernetUDP::beginPacket(const char *host, uint16_t port)
{
// Look up the host first
int ret = 0;
DNSClient dns;
IPAddress remote_addr;
dns.begin(Ethernet.dnsServerIP());
ret = dns.getHostByName(host, remote_addr);
if (ret == 1) {
return beginPacket(remote_addr, port);
} else {
return ret;
}
}
int EthernetUDP::beginPacket(IPAddress ip, uint16_t port)
{
_offset = 0;
return startUDP(_sock, rawIPAddress(ip), port);
}
int EthernetUDP::endPacket()
{
return sendUDP(_sock);
}
size_t EthernetUDP::write(uint8_t byte)
{
return write(&byte, 1);
}
size_t EthernetUDP::write(const uint8_t *buffer, size_t size)
{
uint16_t bytes_written = bufferData(_sock, _offset, buffer, size);
_offset += bytes_written;
return bytes_written;
}
int EthernetUDP::parsePacket()
{
// discard any remaining bytes in the last packet
while (_remaining) {
// could this fail (loop endlessly) if _remaining > 0 and recv in read fails?
// should only occur if recv fails after telling us the data is there, lets
// hope the w5100 always behaves :)
read();
}
if (recvAvailable(_sock) > 0)
{
//HACK - hand-parse the UDP packet using TCP recv method
uint8_t tmpBuf[8];
int ret =0;
//read 8 header bytes and get IP and port from it
ret = recv(_sock,tmpBuf,8);
if (ret > 0)
{
_remoteIP = tmpBuf;
_remotePort = tmpBuf[4];
_remotePort = (_remotePort << 8) + tmpBuf[5];
_remaining = tmpBuf[6];
_remaining = (_remaining << 8) + tmpBuf[7];
// When we get here, any remaining bytes are the data
ret = _remaining;
}
return ret;
}
// There aren't any packets available
return 0;
}
int EthernetUDP::read()
{
uint8_t byte;
if ((_remaining > 0) && (recv(_sock, &byte, 1) > 0))
{
// We read things without any problems
_remaining--;
return byte;
}
// If we get here, there's no data available
return -1;
}
int EthernetUDP::read(unsigned char* buffer, size_t len)
{
if (_remaining > 0)
{
int got;
if (_remaining <= len)
{
// data should fit in the buffer
got = recv(_sock, buffer, _remaining);
}
else
{
// too much data for the buffer,
// grab as much as will fit
got = recv(_sock, buffer, len);
}
if (got > 0)
{
_remaining -= got;
return got;
}
}
// If we get here, there's no data available or recv failed
return -1;
}
int EthernetUDP::peek()
{
uint8_t b;
// Unlike recv, peek doesn't check to see if there's any data available, so we must.
// If the user hasn't called parsePacket yet then return nothing otherwise they
// may get the UDP header
if (!_remaining)
return -1;
::peek(_sock, &b);
return b;
}
void EthernetUDP::flush()
{
// TODO: we should wait for TX buffer to be emptied
}
/* Start EthernetUDP socket, listening at local port PORT */
uint8_t EthernetUDP::beginMulticast(IPAddress ip, uint16_t port)
{
if (_sock != MAX_SOCK_NUM)
return 0;
for (int i = 0; i < MAX_SOCK_NUM; i++) {
uint8_t s = W5100.readSnSR(i);
if (s == SnSR::CLOSED || s == SnSR::FIN_WAIT) {
_sock = i;
break;
}
}
if (_sock == MAX_SOCK_NUM)
return 0;
// Calculate MAC address from Multicast IP Address
byte mac[] = { 0x01, 0x00, 0x5E, 0x00, 0x00, 0x00 };
mac[3] = ip[1] & 0x7F;
mac[4] = ip[2];
mac[5] = ip[3];
W5100.writeSnDIPR(_sock, rawIPAddress(ip)); //239.255.0.1
W5100.writeSnDPORT(_sock, port);
W5100.writeSnDHAR(_sock,mac);
_remaining = 0;
socket(_sock, SnMR::UDP, port, SnMR::MULTI);
return 1;
}

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/*
* Udp.cpp: Library to send/receive UDP packets with the Arduino ethernet shield.
* This version only offers minimal wrapping of socket.c/socket.h
* Drop Udp.h/.cpp into the Ethernet library directory at hardware/libraries/Ethernet/
*
* NOTE: UDP is fast, but has some important limitations (thanks to Warren Gray for mentioning these)
* 1) UDP does not guarantee the order in which assembled UDP packets are received. This
* might not happen often in practice, but in larger network topologies, a UDP
* packet can be received out of sequence.
* 2) UDP does not guard against lost packets - so packets *can* disappear without the sender being
* aware of it. Again, this may not be a concern in practice on small local networks.
* For more information, see http://www.cafeaulait.org/course/week12/35.html
*
* MIT License:
* Copyright (c) 2008 Bjoern Hartmann
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*
* bjoern@cs.stanford.edu 12/30/2008
*/
#ifndef ethernetudp_h
#define ethernetudp_h
#include <Udp.h>
#define UDP_TX_PACKET_MAX_SIZE 24
class EthernetUDP : public UDP {
private:
uint16_t _port; // local port to listen on
IPAddress _remoteIP; // remote IP address for the incoming packet whilst it's being processed
uint16_t _remotePort; // remote port for the incoming packet whilst it's being processed
uint16_t _offset; // offset into the packet being sent
protected:
uint8_t _sock; // socket ID for Wiz5100
uint16_t _remaining; // remaining bytes of incoming packet yet to be processed
public:
EthernetUDP(); // Constructor
virtual uint8_t begin(uint16_t); // initialize, start listening on specified port. Returns 1 if successful, 0 if there are no sockets available to use
virtual uint8_t beginMulticast(IPAddress, uint16_t); // initialize, start listening on specified port. Returns 1 if successful, 0 if there are no sockets available to use
virtual void stop(); // Finish with the UDP socket
// Sending UDP packets
// Start building up a packet to send to the remote host specific in ip and port
// Returns 1 if successful, 0 if there was a problem with the supplied IP address or port
virtual int beginPacket(IPAddress ip, uint16_t port);
// Start building up a packet to send to the remote host specific in host and port
// Returns 1 if successful, 0 if there was a problem resolving the hostname or port
virtual int beginPacket(const char *host, uint16_t port);
// Finish off this packet and send it
// Returns 1 if the packet was sent successfully, 0 if there was an error
virtual int endPacket();
// Write a single byte into the packet
virtual size_t write(uint8_t);
// Write size bytes from buffer into the packet
virtual size_t write(const uint8_t *buffer, size_t size);
using Print::write;
// Start processing the next available incoming packet
// Returns the size of the packet in bytes, or 0 if no packets are available
virtual int parsePacket();
// Number of bytes remaining in the current packet
virtual int available();
// Read a single byte from the current packet
virtual int read();
// Read up to len bytes from the current packet and place them into buffer
// Returns the number of bytes read, or 0 if none are available
virtual int read(unsigned char* buffer, size_t len);
// Read up to len characters from the current packet and place them into buffer
// Returns the number of characters read, or 0 if none are available
virtual int read(char* buffer, size_t len) { return read((unsigned char*)buffer, len); };
// Return the next byte from the current packet without moving on to the next byte
virtual int peek();
virtual void flush(); // Finish reading the current packet
// Return the IP address of the host who sent the current incoming packet
virtual IPAddress remoteIP() { return _remoteIP; };
// Return the port of the host who sent the current incoming packet
virtual uint16_t remotePort() { return _remotePort; };
};
#endif

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#include "w5100.h"
#include "socket.h"
static uint16_t local_port;
/**
* @brief This Socket function initialize the channel in perticular mode, and set the port and wait for W5100 done it.
* @return 1 for success else 0.
*/
uint8_t socket(SOCKET s, uint8_t protocol, uint16_t port, uint8_t flag)
{
if ((protocol == SnMR::TCP) || (protocol == SnMR::UDP) || (protocol == SnMR::IPRAW) || (protocol == SnMR::MACRAW) || (protocol == SnMR::PPPOE))
{
close(s);
SPI.beginTransaction(SPI_ETHERNET_SETTINGS);
W5100.writeSnMR(s, protocol | flag);
if (port != 0) {
W5100.writeSnPORT(s, port);
}
else {
local_port++; // if don't set the source port, set local_port number.
W5100.writeSnPORT(s, local_port);
}
W5100.execCmdSn(s, Sock_OPEN);
SPI.endTransaction();
return 1;
}
return 0;
}
uint8_t socketStatus(SOCKET s)
{
SPI.beginTransaction(SPI_ETHERNET_SETTINGS);
uint8_t status = W5100.readSnSR(s);
SPI.endTransaction();
return status;
}
/**
* @brief This function close the socket and parameter is "s" which represent the socket number
*/
void close(SOCKET s)
{
SPI.beginTransaction(SPI_ETHERNET_SETTINGS);
W5100.execCmdSn(s, Sock_CLOSE);
W5100.writeSnIR(s, 0xFF);
SPI.endTransaction();
}
/**
* @brief This function established the connection for the channel in passive (server) mode. This function waits for the request from the peer.
* @return 1 for success else 0.
*/
uint8_t listen(SOCKET s)
{
SPI.beginTransaction(SPI_ETHERNET_SETTINGS);
if (W5100.readSnSR(s) != SnSR::INIT) {
SPI.endTransaction();
return 0;
}
W5100.execCmdSn(s, Sock_LISTEN);
SPI.endTransaction();
return 1;
}
/**
* @brief This function established the connection for the channel in Active (client) mode.
* This function waits for the untill the connection is established.
*
* @return 1 for success else 0.
*/
uint8_t connect(SOCKET s, uint8_t * addr, uint16_t port)
{
if
(
((addr[0] == 0xFF) && (addr[1] == 0xFF) && (addr[2] == 0xFF) && (addr[3] == 0xFF)) ||
((addr[0] == 0x00) && (addr[1] == 0x00) && (addr[2] == 0x00) && (addr[3] == 0x00)) ||
(port == 0x00)
)
return 0;
// set destination IP
SPI.beginTransaction(SPI_ETHERNET_SETTINGS);
W5100.writeSnDIPR(s, addr);
W5100.writeSnDPORT(s, port);
W5100.execCmdSn(s, Sock_CONNECT);
SPI.endTransaction();
return 1;
}
/**
* @brief This function used for disconnect the socket and parameter is "s" which represent the socket number
* @return 1 for success else 0.
*/
void disconnect(SOCKET s)
{
SPI.beginTransaction(SPI_ETHERNET_SETTINGS);
W5100.execCmdSn(s, Sock_DISCON);
SPI.endTransaction();
}
/**
* @brief This function used to send the data in TCP mode
* @return 1 for success else 0.
*/
uint16_t send(SOCKET s, const uint8_t * buf, uint16_t len)
{
uint8_t status=0;
uint16_t ret=0;
uint16_t freesize=0;
if (len > W5100.SSIZE)
ret = W5100.SSIZE; // check size not to exceed MAX size.
else
ret = len;
// if freebuf is available, start.
do
{
SPI.beginTransaction(SPI_ETHERNET_SETTINGS);
freesize = W5100.getTXFreeSize(s);
status = W5100.readSnSR(s);
SPI.endTransaction();
if ((status != SnSR::ESTABLISHED) && (status != SnSR::CLOSE_WAIT))
{
ret = 0;
break;
}
yield();
}
while (freesize < ret);
// copy data
SPI.beginTransaction(SPI_ETHERNET_SETTINGS);
W5100.send_data_processing(s, (uint8_t *)buf, ret);
W5100.execCmdSn(s, Sock_SEND);
/* +2008.01 bj */
while ( (W5100.readSnIR(s) & SnIR::SEND_OK) != SnIR::SEND_OK )
{
/* m2008.01 [bj] : reduce code */
if ( W5100.readSnSR(s) == SnSR::CLOSED )
{
SPI.endTransaction();
close(s);
return 0;
}
SPI.endTransaction();
yield();
SPI.beginTransaction(SPI_ETHERNET_SETTINGS);
}
/* +2008.01 bj */
W5100.writeSnIR(s, SnIR::SEND_OK);
SPI.endTransaction();
return ret;
}
/**
* @brief This function is an application I/F function which is used to receive the data in TCP mode.
* It continues to wait for data as much as the application wants to receive.
*
* @return received data size for success else -1.
*/
int16_t recv(SOCKET s, uint8_t *buf, int16_t len)
{
// Check how much data is available
SPI.beginTransaction(SPI_ETHERNET_SETTINGS);
int16_t ret = W5100.getRXReceivedSize(s);
if ( ret == 0 )
{
// No data available.
uint8_t status = W5100.readSnSR(s);
if ( status == SnSR::LISTEN || status == SnSR::CLOSED || status == SnSR::CLOSE_WAIT )
{
// The remote end has closed its side of the connection, so this is the eof state
ret = 0;
}
else
{
// The connection is still up, but there's no data waiting to be read
ret = -1;
}
}
else if (ret > len)
{
ret = len;
}
if ( ret > 0 )
{
W5100.recv_data_processing(s, buf, ret);
W5100.execCmdSn(s, Sock_RECV);
}
SPI.endTransaction();
return ret;
}
int16_t recvAvailable(SOCKET s)
{
SPI.beginTransaction(SPI_ETHERNET_SETTINGS);
int16_t ret = W5100.getRXReceivedSize(s);
SPI.endTransaction();
return ret;
}
/**
* @brief Returns the first byte in the receive queue (no checking)
*
* @return
*/
uint16_t peek(SOCKET s, uint8_t *buf)
{
SPI.beginTransaction(SPI_ETHERNET_SETTINGS);
W5100.recv_data_processing(s, buf, 1, 1);
SPI.endTransaction();
return 1;
}
/**
* @brief This function is an application I/F function which is used to send the data for other then TCP mode.
* Unlike TCP transmission, The peer's destination address and the port is needed.
*
* @return This function return send data size for success else -1.
*/
uint16_t sendto(SOCKET s, const uint8_t *buf, uint16_t len, uint8_t *addr, uint16_t port)
{
uint16_t ret=0;
if (len > W5100.SSIZE) ret = W5100.SSIZE; // check size not to exceed MAX size.
else ret = len;
if
(
((addr[0] == 0x00) && (addr[1] == 0x00) && (addr[2] == 0x00) && (addr[3] == 0x00)) ||
((port == 0x00)) ||(ret == 0)
)
{
/* +2008.01 [bj] : added return value */
ret = 0;
}
else
{
SPI.beginTransaction(SPI_ETHERNET_SETTINGS);
W5100.writeSnDIPR(s, addr);
W5100.writeSnDPORT(s, port);
// copy data
W5100.send_data_processing(s, (uint8_t *)buf, ret);
W5100.execCmdSn(s, Sock_SEND);
/* +2008.01 bj */
while ( (W5100.readSnIR(s) & SnIR::SEND_OK) != SnIR::SEND_OK )
{
if (W5100.readSnIR(s) & SnIR::TIMEOUT)
{
/* +2008.01 [bj]: clear interrupt */
W5100.writeSnIR(s, (SnIR::SEND_OK | SnIR::TIMEOUT)); /* clear SEND_OK & TIMEOUT */
SPI.endTransaction();
return 0;
}
SPI.endTransaction();
yield();
SPI.beginTransaction(SPI_ETHERNET_SETTINGS);
}
/* +2008.01 bj */
W5100.writeSnIR(s, SnIR::SEND_OK);
SPI.endTransaction();
}
return ret;
}
/**
* @brief This function is an application I/F function which is used to receive the data in other then
* TCP mode. This function is used to receive UDP, IP_RAW and MAC_RAW mode, and handle the header as well.
*
* @return This function return received data size for success else -1.
*/
uint16_t recvfrom(SOCKET s, uint8_t *buf, uint16_t len, uint8_t *addr, uint16_t *port)
{
uint8_t head[8];
uint16_t data_len=0;
uint16_t ptr=0;
if ( len > 0 )
{
SPI.beginTransaction(SPI_ETHERNET_SETTINGS);
ptr = W5100.readSnRX_RD(s);
switch (W5100.readSnMR(s) & 0x07)
{
case SnMR::UDP :
W5100.read_data(s, ptr, head, 0x08);
ptr += 8;
// read peer's IP address, port number.
addr[0] = head[0];
addr[1] = head[1];
addr[2] = head[2];
addr[3] = head[3];
*port = head[4];
*port = (*port << 8) + head[5];
data_len = head[6];
data_len = (data_len << 8) + head[7];
W5100.read_data(s, ptr, buf, data_len); // data copy.
ptr += data_len;
W5100.writeSnRX_RD(s, ptr);
break;
case SnMR::IPRAW :
W5100.read_data(s, ptr, head, 0x06);
ptr += 6;
addr[0] = head[0];
addr[1] = head[1];
addr[2] = head[2];
addr[3] = head[3];
data_len = head[4];
data_len = (data_len << 8) + head[5];
W5100.read_data(s, ptr, buf, data_len); // data copy.
ptr += data_len;
W5100.writeSnRX_RD(s, ptr);
break;
case SnMR::MACRAW:
W5100.read_data(s, ptr, head, 2);
ptr+=2;
data_len = head[0];
data_len = (data_len<<8) + head[1] - 2;
W5100.read_data(s, ptr, buf, data_len);
ptr += data_len;
W5100.writeSnRX_RD(s, ptr);
break;
default :
break;
}
W5100.execCmdSn(s, Sock_RECV);
SPI.endTransaction();
}
return data_len;
}
/**
* @brief Wait for buffered transmission to complete.
*/
void flush(SOCKET s) {
// TODO
}
uint16_t igmpsend(SOCKET s, const uint8_t * buf, uint16_t len)
{
uint16_t ret=0;
if (len > W5100.SSIZE)
ret = W5100.SSIZE; // check size not to exceed MAX size.
else
ret = len;
if (ret == 0)
return 0;
SPI.beginTransaction(SPI_ETHERNET_SETTINGS);
W5100.send_data_processing(s, (uint8_t *)buf, ret);
W5100.execCmdSn(s, Sock_SEND);
while ( (W5100.readSnIR(s) & SnIR::SEND_OK) != SnIR::SEND_OK )
{
if (W5100.readSnIR(s) & SnIR::TIMEOUT)
{
/* in case of igmp, if send fails, then socket closed */
/* if you want change, remove this code. */
SPI.endTransaction();
close(s);
return 0;
}
SPI.endTransaction();
yield();
SPI.beginTransaction(SPI_ETHERNET_SETTINGS);
}
W5100.writeSnIR(s, SnIR::SEND_OK);
SPI.endTransaction();
return ret;
}
uint16_t bufferData(SOCKET s, uint16_t offset, const uint8_t* buf, uint16_t len)
{
uint16_t ret =0;
SPI.beginTransaction(SPI_ETHERNET_SETTINGS);
if (len > W5100.getTXFreeSize(s))
{
ret = W5100.getTXFreeSize(s); // check size not to exceed MAX size.
}
else
{
ret = len;
}
W5100.send_data_processing_offset(s, offset, buf, ret);
SPI.endTransaction();
return ret;
}
int startUDP(SOCKET s, uint8_t* addr, uint16_t port)
{
if
(
((addr[0] == 0x00) && (addr[1] == 0x00) && (addr[2] == 0x00) && (addr[3] == 0x00)) ||
((port == 0x00))
)
{
return 0;
}
else
{
SPI.beginTransaction(SPI_ETHERNET_SETTINGS);
W5100.writeSnDIPR(s, addr);
W5100.writeSnDPORT(s, port);
SPI.endTransaction();
return 1;
}
}
int sendUDP(SOCKET s)
{
SPI.beginTransaction(SPI_ETHERNET_SETTINGS);
W5100.execCmdSn(s, Sock_SEND);
/* +2008.01 bj */
while ( (W5100.readSnIR(s) & SnIR::SEND_OK) != SnIR::SEND_OK )
{
if (W5100.readSnIR(s) & SnIR::TIMEOUT)
{
/* +2008.01 [bj]: clear interrupt */
W5100.writeSnIR(s, (SnIR::SEND_OK|SnIR::TIMEOUT));
SPI.endTransaction();
return 0;
}
SPI.endTransaction();
yield();
SPI.beginTransaction(SPI_ETHERNET_SETTINGS);
}
/* +2008.01 bj */
W5100.writeSnIR(s, SnIR::SEND_OK);
SPI.endTransaction();
/* Sent ok */
return 1;
}

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#ifndef _SOCKET_H_
#define _SOCKET_H_
#include "utility/w5100.h"
extern uint8_t socket(SOCKET s, uint8_t protocol, uint16_t port, uint8_t flag); // Opens a socket(TCP or UDP or IP_RAW mode)
extern uint8_t socketStatus(SOCKET s);
extern void close(SOCKET s); // Close socket
extern uint8_t connect(SOCKET s, uint8_t * addr, uint16_t port); // Establish TCP connection (Active connection)
extern void disconnect(SOCKET s); // disconnect the connection
extern uint8_t listen(SOCKET s); // Establish TCP connection (Passive connection)
extern uint16_t send(SOCKET s, const uint8_t * buf, uint16_t len); // Send data (TCP)
extern int16_t recv(SOCKET s, uint8_t * buf, int16_t len); // Receive data (TCP)
extern int16_t recvAvailable(SOCKET s);
extern uint16_t peek(SOCKET s, uint8_t *buf);
extern uint16_t sendto(SOCKET s, const uint8_t * buf, uint16_t len, uint8_t * addr, uint16_t port); // Send data (UDP/IP RAW)
extern uint16_t recvfrom(SOCKET s, uint8_t * buf, uint16_t len, uint8_t * addr, uint16_t *port); // Receive data (UDP/IP RAW)
extern void flush(SOCKET s); // Wait for transmission to complete
extern uint16_t igmpsend(SOCKET s, const uint8_t * buf, uint16_t len);
// Functions to allow buffered UDP send (i.e. where the UDP datagram is built up over a
// number of calls before being sent
/*
@brief This function sets up a UDP datagram, the data for which will be provided by one
or more calls to bufferData and then finally sent with sendUDP.
@return 1 if the datagram was successfully set up, or 0 if there was an error
*/
extern int startUDP(SOCKET s, uint8_t* addr, uint16_t port);
/*
@brief This function copies up to len bytes of data from buf into a UDP datagram to be
sent later by sendUDP. Allows datagrams to be built up from a series of bufferData calls.
@return Number of bytes successfully buffered
*/
uint16_t bufferData(SOCKET s, uint16_t offset, const uint8_t* buf, uint16_t len);
/*
@brief Send a UDP datagram built up from a sequence of startUDP followed by one or more
calls to bufferData.
@return 1 if the datagram was successfully sent, or 0 if there was an error
*/
int sendUDP(SOCKET s);
#endif
/* _SOCKET_H_ */

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#ifndef UTIL_H
#define UTIL_H
#define htons(x) ( ((x)<< 8 & 0xFF00) | \
((x)>> 8 & 0x00FF) )
#define ntohs(x) htons(x)
#define htonl(x) ( ((x)<<24 & 0xFF000000UL) | \
((x)<< 8 & 0x00FF0000UL) | \
((x)>> 8 & 0x0000FF00UL) | \
((x)>>24 & 0x000000FFUL) )
#define ntohl(x) htonl(x)
#endif

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/*
* Copyright (c) 2010 by Arduino LLC. All rights reserved.
*
* This file is free software; you can redistribute it and/or modify
* it under the terms of either the GNU General Public License version 2
* or the GNU Lesser General Public License version 2.1, both as
* published by the Free Software Foundation.
*/
#include <stdio.h>
#include <string.h>
#include "w5100.h"
// W5100 controller instance
W5100Class W5100;
#define TX_RX_MAX_BUF_SIZE 2048
#define TX_BUF 0x1100
#define RX_BUF (TX_BUF + TX_RX_MAX_BUF_SIZE)
#define TXBUF_BASE 0x4000
#define RXBUF_BASE 0x6000
void W5100Class::init(void)
{
delay(300);
#if !defined(SPI_HAS_EXTENDED_CS_PIN_HANDLING)
SPI.begin();
initSS();
#else
SPI.begin(ETHERNET_SHIELD_SPI_CS);
// Set clock to 4Mhz (W5100 should support up to about 14Mhz)
SPI.setClockDivider(ETHERNET_SHIELD_SPI_CS, 21);
SPI.setDataMode(ETHERNET_SHIELD_SPI_CS, SPI_MODE0);
#endif
SPI.beginTransaction(SPI_ETHERNET_SETTINGS);
writeMR(1<<RST);
writeTMSR(0x55);
writeRMSR(0x55);
SPI.endTransaction();
for (int i=0; i<MAX_SOCK_NUM; i++) {
SBASE[i] = TXBUF_BASE + SSIZE * i;
RBASE[i] = RXBUF_BASE + RSIZE * i;
}
}
uint16_t W5100Class::getTXFreeSize(SOCKET s)
{
uint16_t val=0, val1=0;
do {
val1 = readSnTX_FSR(s);
if (val1 != 0)
val = readSnTX_FSR(s);
}
while (val != val1);
return val;
}
uint16_t W5100Class::getRXReceivedSize(SOCKET s)
{
uint16_t val=0,val1=0;
do {
val1 = readSnRX_RSR(s);
if (val1 != 0)
val = readSnRX_RSR(s);
}
while (val != val1);
return val;
}
void W5100Class::send_data_processing(SOCKET s, const uint8_t *data, uint16_t len)
{
// This is same as having no offset in a call to send_data_processing_offset
send_data_processing_offset(s, 0, data, len);
}
void W5100Class::send_data_processing_offset(SOCKET s, uint16_t data_offset, const uint8_t *data, uint16_t len)
{
uint16_t ptr = readSnTX_WR(s);
ptr += data_offset;
uint16_t offset = ptr & SMASK;
uint16_t dstAddr = offset + SBASE[s];
if (offset + len > SSIZE)
{
// Wrap around circular buffer
uint16_t size = SSIZE - offset;
write(dstAddr, data, size);
write(SBASE[s], data + size, len - size);
}
else {
write(dstAddr, data, len);
}
ptr += len;
writeSnTX_WR(s, ptr);
}
void W5100Class::recv_data_processing(SOCKET s, uint8_t *data, uint16_t len, uint8_t peek)
{
uint16_t ptr;
ptr = readSnRX_RD(s);
read_data(s, ptr, data, len);
if (!peek)
{
ptr += len;
writeSnRX_RD(s, ptr);
}
}
void W5100Class::read_data(SOCKET s, volatile uint16_t src, volatile uint8_t *dst, uint16_t len)
{
uint16_t size;
uint16_t src_mask;
uint16_t src_ptr;
src_mask = src & RMASK;
src_ptr = RBASE[s] + src_mask;
if( (src_mask + len) > RSIZE )
{
size = RSIZE - src_mask;
read(src_ptr, (uint8_t *)dst, size);
dst += size;
read(RBASE[s], (uint8_t *) dst, len - size);
}
else
read(src_ptr, (uint8_t *) dst, len);
}
uint8_t W5100Class::write(uint16_t _addr, uint8_t _data)
{
#if !defined(SPI_HAS_EXTENDED_CS_PIN_HANDLING)
setSS();
SPI.transfer(0xF0);
SPI.transfer(_addr >> 8);
SPI.transfer(_addr & 0xFF);
SPI.transfer(_data);
resetSS();
#else
SPI.transfer(ETHERNET_SHIELD_SPI_CS, 0xF0, SPI_CONTINUE);
SPI.transfer(ETHERNET_SHIELD_SPI_CS, _addr >> 8, SPI_CONTINUE);
SPI.transfer(ETHERNET_SHIELD_SPI_CS, _addr & 0xFF, SPI_CONTINUE);
SPI.transfer(ETHERNET_SHIELD_SPI_CS, _data);
#endif
return 1;
}
uint16_t W5100Class::write(uint16_t _addr, const uint8_t *_buf, uint16_t _len)
{
for (uint16_t i=0; i<_len; i++)
{
#if !defined(SPI_HAS_EXTENDED_CS_PIN_HANDLING)
setSS();
SPI.transfer(0xF0);
SPI.transfer(_addr >> 8);
SPI.transfer(_addr & 0xFF);
_addr++;
SPI.transfer(_buf[i]);
resetSS();
#else
SPI.transfer(ETHERNET_SHIELD_SPI_CS, 0xF0, SPI_CONTINUE);
SPI.transfer(ETHERNET_SHIELD_SPI_CS, _addr >> 8, SPI_CONTINUE);
SPI.transfer(ETHERNET_SHIELD_SPI_CS, _addr & 0xFF, SPI_CONTINUE);
SPI.transfer(ETHERNET_SHIELD_SPI_CS, _buf[i]);
_addr++;
#endif
}
return _len;
}
uint8_t W5100Class::read(uint16_t _addr)
{
#if !defined(SPI_HAS_EXTENDED_CS_PIN_HANDLING)
setSS();
SPI.transfer(0x0F);
SPI.transfer(_addr >> 8);
SPI.transfer(_addr & 0xFF);
uint8_t _data = SPI.transfer(0);
resetSS();
#else
SPI.transfer(ETHERNET_SHIELD_SPI_CS, 0x0F, SPI_CONTINUE);
SPI.transfer(ETHERNET_SHIELD_SPI_CS, _addr >> 8, SPI_CONTINUE);
SPI.transfer(ETHERNET_SHIELD_SPI_CS, _addr & 0xFF, SPI_CONTINUE);
uint8_t _data = SPI.transfer(ETHERNET_SHIELD_SPI_CS, 0);
#endif
return _data;
}
uint16_t W5100Class::read(uint16_t _addr, uint8_t *_buf, uint16_t _len)
{
for (uint16_t i=0; i<_len; i++)
{
#if !defined(SPI_HAS_EXTENDED_CS_PIN_HANDLING)
setSS();
SPI.transfer(0x0F);
SPI.transfer(_addr >> 8);
SPI.transfer(_addr & 0xFF);
_addr++;
_buf[i] = SPI.transfer(0);
resetSS();
#else
SPI.transfer(ETHERNET_SHIELD_SPI_CS, 0x0F, SPI_CONTINUE);
SPI.transfer(ETHERNET_SHIELD_SPI_CS, _addr >> 8, SPI_CONTINUE);
SPI.transfer(ETHERNET_SHIELD_SPI_CS, _addr & 0xFF, SPI_CONTINUE);
_buf[i] = SPI.transfer(ETHERNET_SHIELD_SPI_CS, 0);
_addr++;
#endif
}
return _len;
}
void W5100Class::execCmdSn(SOCKET s, SockCMD _cmd) {
// Send command to socket
writeSnCR(s, _cmd);
// Wait for command to complete
while (readSnCR(s))
;
}

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/*
* Copyright (c) 2010 by Arduino LLC. All rights reserved.
*
* This file is free software; you can redistribute it and/or modify
* it under the terms of either the GNU General Public License version 2
* or the GNU Lesser General Public License version 2.1, both as
* published by the Free Software Foundation.
*/
#ifndef W5100_H_INCLUDED
#define W5100_H_INCLUDED
#include <SPI.h>
#define ETHERNET_SHIELD_SPI_CS 10
#define MAX_SOCK_NUM 4
typedef uint8_t SOCKET;
#define IDM_OR 0x8000
#define IDM_AR0 0x8001
#define IDM_AR1 0x8002
#define IDM_DR 0x8003
/*
class MR {
public:
static const uint8_t RST = 0x80;
static const uint8_t PB = 0x10;
static const uint8_t PPPOE = 0x08;
static const uint8_t LB = 0x04;
static const uint8_t AI = 0x02;
static const uint8_t IND = 0x01;
};
*/
/*
class IR {
public:
static const uint8_t CONFLICT = 0x80;
static const uint8_t UNREACH = 0x40;
static const uint8_t PPPoE = 0x20;
static const uint8_t SOCK0 = 0x01;
static const uint8_t SOCK1 = 0x02;
static const uint8_t SOCK2 = 0x04;
static const uint8_t SOCK3 = 0x08;
static inline uint8_t SOCK(SOCKET ch) { return (0x01 << ch); };
};
*/
class SnMR {
public:
static const uint8_t CLOSE = 0x00;
static const uint8_t TCP = 0x01;
static const uint8_t UDP = 0x02;
static const uint8_t IPRAW = 0x03;
static const uint8_t MACRAW = 0x04;
static const uint8_t PPPOE = 0x05;
static const uint8_t ND = 0x20;
static const uint8_t MULTI = 0x80;
};
enum SockCMD {
Sock_OPEN = 0x01,
Sock_LISTEN = 0x02,
Sock_CONNECT = 0x04,
Sock_DISCON = 0x08,
Sock_CLOSE = 0x10,
Sock_SEND = 0x20,
Sock_SEND_MAC = 0x21,
Sock_SEND_KEEP = 0x22,
Sock_RECV = 0x40
};
/*class SnCmd {
public:
static const uint8_t OPEN = 0x01;
static const uint8_t LISTEN = 0x02;
static const uint8_t CONNECT = 0x04;
static const uint8_t DISCON = 0x08;
static const uint8_t CLOSE = 0x10;
static const uint8_t SEND = 0x20;
static const uint8_t SEND_MAC = 0x21;
static const uint8_t SEND_KEEP = 0x22;
static const uint8_t RECV = 0x40;
};
*/
class SnIR {
public:
static const uint8_t SEND_OK = 0x10;
static const uint8_t TIMEOUT = 0x08;
static const uint8_t RECV = 0x04;
static const uint8_t DISCON = 0x02;
static const uint8_t CON = 0x01;
};
class SnSR {
public:
static const uint8_t CLOSED = 0x00;
static const uint8_t INIT = 0x13;
static const uint8_t LISTEN = 0x14;
static const uint8_t SYNSENT = 0x15;
static const uint8_t SYNRECV = 0x16;
static const uint8_t ESTABLISHED = 0x17;
static const uint8_t FIN_WAIT = 0x18;
static const uint8_t CLOSING = 0x1A;
static const uint8_t TIME_WAIT = 0x1B;
static const uint8_t CLOSE_WAIT = 0x1C;
static const uint8_t LAST_ACK = 0x1D;
static const uint8_t UDP = 0x22;
static const uint8_t IPRAW = 0x32;
static const uint8_t MACRAW = 0x42;
static const uint8_t PPPOE = 0x5F;
};
class IPPROTO {
public:
static const uint8_t IP = 0;
static const uint8_t ICMP = 1;
static const uint8_t IGMP = 2;
static const uint8_t GGP = 3;
static const uint8_t TCP = 6;
static const uint8_t PUP = 12;
static const uint8_t UDP = 17;
static const uint8_t IDP = 22;
static const uint8_t ND = 77;
static const uint8_t RAW = 255;
};
class W5100Class {
public:
void init();
/**
* @brief This function is being used for copy the data form Receive buffer of the chip to application buffer.
*
* It calculate the actual physical address where one has to read
* the data from Receive buffer. Here also take care of the condition while it exceed
* the Rx memory uper-bound of socket.
*/
void read_data(SOCKET s, volatile uint16_t src, volatile uint8_t * dst, uint16_t len);
/**
* @brief This function is being called by send() and sendto() function also.
*
* This function read the Tx write pointer register and after copy the data in buffer update the Tx write pointer
* register. User should read upper byte first and lower byte later to get proper value.
*/
void send_data_processing(SOCKET s, const uint8_t *data, uint16_t len);
/**
* @brief A copy of send_data_processing that uses the provided ptr for the
* write offset. Only needed for the "streaming" UDP API, where
* a single UDP packet is built up over a number of calls to
* send_data_processing_ptr, because TX_WR doesn't seem to get updated
* correctly in those scenarios
* @param ptr value to use in place of TX_WR. If 0, then the value is read
* in from TX_WR
* @return New value for ptr, to be used in the next call
*/
// FIXME Update documentation
void send_data_processing_offset(SOCKET s, uint16_t data_offset, const uint8_t *data, uint16_t len);
/**
* @brief This function is being called by recv() also.
*
* This function read the Rx read pointer register
* and after copy the data from receive buffer update the Rx write pointer register.
* User should read upper byte first and lower byte later to get proper value.
*/
void recv_data_processing(SOCKET s, uint8_t *data, uint16_t len, uint8_t peek = 0);
inline void setGatewayIp(uint8_t *_addr);
inline void getGatewayIp(uint8_t *_addr);
inline void setSubnetMask(uint8_t *_addr);
inline void getSubnetMask(uint8_t *_addr);
inline void setMACAddress(uint8_t * addr);
inline void getMACAddress(uint8_t * addr);
inline void setIPAddress(uint8_t * addr);
inline void getIPAddress(uint8_t * addr);
inline void setRetransmissionTime(uint16_t timeout);
inline void setRetransmissionCount(uint8_t _retry);
void execCmdSn(SOCKET s, SockCMD _cmd);
uint16_t getTXFreeSize(SOCKET s);
uint16_t getRXReceivedSize(SOCKET s);
// W5100 Registers
// ---------------
private:
static uint8_t write(uint16_t _addr, uint8_t _data);
static uint16_t write(uint16_t addr, const uint8_t *buf, uint16_t len);
static uint8_t read(uint16_t addr);
static uint16_t read(uint16_t addr, uint8_t *buf, uint16_t len);
#define __GP_REGISTER8(name, address) \
static inline void write##name(uint8_t _data) { \
write(address, _data); \
} \
static inline uint8_t read##name() { \
return read(address); \
}
#define __GP_REGISTER16(name, address) \
static void write##name(uint16_t _data) { \
write(address, _data >> 8); \
write(address+1, _data & 0xFF); \
} \
static uint16_t read##name() { \
uint16_t res = read(address); \
res = (res << 8) + read(address + 1); \
return res; \
}
#define __GP_REGISTER_N(name, address, size) \
static uint16_t write##name(uint8_t *_buff) { \
return write(address, _buff, size); \
} \
static uint16_t read##name(uint8_t *_buff) { \
return read(address, _buff, size); \
}
public:
__GP_REGISTER8 (MR, 0x0000); // Mode
__GP_REGISTER_N(GAR, 0x0001, 4); // Gateway IP address
__GP_REGISTER_N(SUBR, 0x0005, 4); // Subnet mask address
__GP_REGISTER_N(SHAR, 0x0009, 6); // Source MAC address
__GP_REGISTER_N(SIPR, 0x000F, 4); // Source IP address
__GP_REGISTER8 (IR, 0x0015); // Interrupt
__GP_REGISTER8 (IMR, 0x0016); // Interrupt Mask
__GP_REGISTER16(RTR, 0x0017); // Timeout address
__GP_REGISTER8 (RCR, 0x0019); // Retry count
__GP_REGISTER8 (RMSR, 0x001A); // Receive memory size
__GP_REGISTER8 (TMSR, 0x001B); // Transmit memory size
__GP_REGISTER8 (PATR, 0x001C); // Authentication type address in PPPoE mode
__GP_REGISTER8 (PTIMER, 0x0028); // PPP LCP Request Timer
__GP_REGISTER8 (PMAGIC, 0x0029); // PPP LCP Magic Number
__GP_REGISTER_N(UIPR, 0x002A, 4); // Unreachable IP address in UDP mode
__GP_REGISTER16(UPORT, 0x002E); // Unreachable Port address in UDP mode
#undef __GP_REGISTER8
#undef __GP_REGISTER16
#undef __GP_REGISTER_N
// W5100 Socket registers
// ----------------------
private:
static inline uint8_t readSn(SOCKET _s, uint16_t _addr);
static inline uint8_t writeSn(SOCKET _s, uint16_t _addr, uint8_t _data);
static inline uint16_t readSn(SOCKET _s, uint16_t _addr, uint8_t *_buf, uint16_t len);
static inline uint16_t writeSn(SOCKET _s, uint16_t _addr, uint8_t *_buf, uint16_t len);
static const uint16_t CH_BASE = 0x0400;
static const uint16_t CH_SIZE = 0x0100;
#define __SOCKET_REGISTER8(name, address) \
static inline void write##name(SOCKET _s, uint8_t _data) { \
writeSn(_s, address, _data); \
} \
static inline uint8_t read##name(SOCKET _s) { \
return readSn(_s, address); \
}
#define __SOCKET_REGISTER16(name, address) \
static void write##name(SOCKET _s, uint16_t _data) { \
writeSn(_s, address, _data >> 8); \
writeSn(_s, address+1, _data & 0xFF); \
} \
static uint16_t read##name(SOCKET _s) { \
uint16_t res = readSn(_s, address); \
uint16_t res2 = readSn(_s,address + 1); \
res = res << 8; \
res2 = res2 & 0xFF; \
res = res | res2; \
return res; \
}
#define __SOCKET_REGISTER_N(name, address, size) \
static uint16_t write##name(SOCKET _s, uint8_t *_buff) { \
return writeSn(_s, address, _buff, size); \
} \
static uint16_t read##name(SOCKET _s, uint8_t *_buff) { \
return readSn(_s, address, _buff, size); \
}
public:
__SOCKET_REGISTER8(SnMR, 0x0000) // Mode
__SOCKET_REGISTER8(SnCR, 0x0001) // Command
__SOCKET_REGISTER8(SnIR, 0x0002) // Interrupt
__SOCKET_REGISTER8(SnSR, 0x0003) // Status
__SOCKET_REGISTER16(SnPORT, 0x0004) // Source Port
__SOCKET_REGISTER_N(SnDHAR, 0x0006, 6) // Destination Hardw Addr
__SOCKET_REGISTER_N(SnDIPR, 0x000C, 4) // Destination IP Addr
__SOCKET_REGISTER16(SnDPORT, 0x0010) // Destination Port
__SOCKET_REGISTER16(SnMSSR, 0x0012) // Max Segment Size
__SOCKET_REGISTER8(SnPROTO, 0x0014) // Protocol in IP RAW Mode
__SOCKET_REGISTER8(SnTOS, 0x0015) // IP TOS
__SOCKET_REGISTER8(SnTTL, 0x0016) // IP TTL
__SOCKET_REGISTER16(SnTX_FSR, 0x0020) // TX Free Size
__SOCKET_REGISTER16(SnTX_RD, 0x0022) // TX Read Pointer
__SOCKET_REGISTER16(SnTX_WR, 0x0024) // TX Write Pointer
__SOCKET_REGISTER16(SnRX_RSR, 0x0026) // RX Free Size
__SOCKET_REGISTER16(SnRX_RD, 0x0028) // RX Read Pointer
__SOCKET_REGISTER16(SnRX_WR, 0x002A) // RX Write Pointer (supported?)
#undef __SOCKET_REGISTER8
#undef __SOCKET_REGISTER16
#undef __SOCKET_REGISTER_N
private:
static const uint8_t RST = 7; // Reset BIT
static const int SOCKETS = 4;
static const uint16_t SMASK = 0x07FF; // Tx buffer MASK
static const uint16_t RMASK = 0x07FF; // Rx buffer MASK
public:
static const uint16_t SSIZE = 2048; // Max Tx buffer size
private:
static const uint16_t RSIZE = 2048; // Max Rx buffer size
uint16_t SBASE[SOCKETS]; // Tx buffer base address
uint16_t RBASE[SOCKETS]; // Rx buffer base address
private:
#if !defined(SPI_HAS_EXTENDED_CS_PIN_HANDLING)
#define SPI_ETHERNET_SETTINGS SPISettings(4000000, MSBFIRST, SPI_MODE0)
#if defined(ARDUINO_ARCH_AVR)
#if defined(__AVR_ATmega1280__) || defined(__AVR_ATmega2560__)
inline static void initSS() { DDRB |= _BV(4); };
inline static void setSS() { PORTB &= ~_BV(4); };
inline static void resetSS() { PORTB |= _BV(4); };
#elif defined(__AVR_ATmega32U4__)
inline static void initSS() { DDRB |= _BV(6); };
inline static void setSS() { PORTB &= ~_BV(6); };
inline static void resetSS() { PORTB |= _BV(6); };
#elif defined(__AVR_AT90USB1286__) || defined(__AVR_AT90USB646__) || defined(__AVR_AT90USB162__)
inline static void initSS() { DDRB |= _BV(0); };
inline static void setSS() { PORTB &= ~_BV(0); };
inline static void resetSS() { PORTB |= _BV(0); };
#else
inline static void initSS() { DDRB |= _BV(2); };
inline static void setSS() { PORTB &= ~_BV(2); };
inline static void resetSS() { PORTB |= _BV(2); };
#endif
#elif defined(__ARDUINO_ARC__)
inline static void initSS() { pinMode(10, OUTPUT); };
inline static void setSS() { digitalWrite(10, LOW); };
inline static void resetSS() { digitalWrite(10, HIGH); };
#else
inline static void initSS() {
*portModeRegister(digitalPinToPort(ETHERNET_SHIELD_SPI_CS)) |= digitalPinToBitMask(ETHERNET_SHIELD_SPI_CS);
}
inline static void setSS() {
*portOutputRegister(digitalPinToPort(ETHERNET_SHIELD_SPI_CS)) &= ~digitalPinToBitMask(ETHERNET_SHIELD_SPI_CS);
}
inline static void resetSS() {
*portOutputRegister(digitalPinToPort(ETHERNET_SHIELD_SPI_CS)) |= digitalPinToBitMask(ETHERNET_SHIELD_SPI_CS);
}
#endif
#else
#define SPI_ETHERNET_SETTINGS ETHERNET_SHIELD_SPI_CS,SPISettings(4000000, MSBFIRST, SPI_MODE0)
// initSS(), setSS(), resetSS() not needed with EXTENDED_CS_PIN_HANDLING
#endif
};
extern W5100Class W5100;
uint8_t W5100Class::readSn(SOCKET _s, uint16_t _addr) {
return read(CH_BASE + _s * CH_SIZE + _addr);
}
uint8_t W5100Class::writeSn(SOCKET _s, uint16_t _addr, uint8_t _data) {
return write(CH_BASE + _s * CH_SIZE + _addr, _data);
}
uint16_t W5100Class::readSn(SOCKET _s, uint16_t _addr, uint8_t *_buf, uint16_t _len) {
return read(CH_BASE + _s * CH_SIZE + _addr, _buf, _len);
}
uint16_t W5100Class::writeSn(SOCKET _s, uint16_t _addr, uint8_t *_buf, uint16_t _len) {
return write(CH_BASE + _s * CH_SIZE + _addr, _buf, _len);
}
void W5100Class::getGatewayIp(uint8_t *_addr) {
readGAR(_addr);
}
void W5100Class::setGatewayIp(uint8_t *_addr) {
writeGAR(_addr);
}
void W5100Class::getSubnetMask(uint8_t *_addr) {
readSUBR(_addr);
}
void W5100Class::setSubnetMask(uint8_t *_addr) {
writeSUBR(_addr);
}
void W5100Class::getMACAddress(uint8_t *_addr) {
readSHAR(_addr);
}
void W5100Class::setMACAddress(uint8_t *_addr) {
writeSHAR(_addr);
}
void W5100Class::getIPAddress(uint8_t *_addr) {
readSIPR(_addr);
}
void W5100Class::setIPAddress(uint8_t *_addr) {
writeSIPR(_addr);
}
void W5100Class::setRetransmissionTime(uint16_t _timeout) {
writeRTR(_timeout);
}
void W5100Class::setRetransmissionCount(uint8_t _retry) {
writeRCR(_retry);
}
#endif

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// Do not remove the include below
#include "MqttCanGateway.h"
// demo: CAN-BUS Shield, send data
#include <mcp_can.h>
#include <SPI.h>
// the cs pin of the version after v1.1 is default to D9
// v0.9b and v1.0 is default D10
const int SPI_CS_PIN = 10;
MCP_CAN CAN(SPI_CS_PIN); // Set CS pin
void setup()
{
Serial.begin(115200);
while (CAN_OK != CAN.begin(CAN_500KBPS)) // init can bus : baudrate = 500k
{
Serial.println("CAN BUS Shield init fail");
Serial.println(" Init CAN BUS Shield again");
delay(100);
}
Serial.println("CAN BUS Shield init ok!");
}
unsigned char stmp[8] = {0, 1, 2, 3, 4, 5, 6, 7};
void loop()
{
// send data: id = 0x00, standrad frame, data len = 8, stmp: data buf
CAN.sendMsgBuf(0x00, 0, 8, stmp);
delay(100); // send data per 100ms
}

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// Only modify this file to include
// - function definitions (prototypes)
// - include files
// - extern variable definitions
// In the appropriate section
#ifndef _MqttCanGateway_H_
#define _MqttCanGateway_H_
#include "Arduino.h"
//add your includes for the project MqttCanGateway here
//end of add your includes here
//add your function definitions for the project MqttCanGateway here
//Do not add code below this line
#endif /* _MqttCanGateway_H_ */

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/*
* Copyright (c) 2010 by Cristian Maglie <c.maglie@arduino.cc>
* Copyright (c) 2014 by Paul Stoffregen <paul@pjrc.com> (Transaction API)
* Copyright (c) 2014 by Matthijs Kooijman <matthijs@stdin.nl> (SPISettings AVR)
* Copyright (c) 2014 by Andrew J. Kroll <xxxajk@gmail.com> (atomicity fixes)
* SPI Master library for arduino.
*
* This file is free software; you can redistribute it and/or modify
* it under the terms of either the GNU General Public License version 2
* or the GNU Lesser General Public License version 2.1, both as
* published by the Free Software Foundation.
*/
#include "SPI.h"
SPIClass SPI;
uint8_t SPIClass::initialized = 0;
uint8_t SPIClass::interruptMode = 0;
uint8_t SPIClass::interruptMask = 0;
uint8_t SPIClass::interruptSave = 0;
#ifdef SPI_TRANSACTION_MISMATCH_LED
uint8_t SPIClass::inTransactionFlag = 0;
#endif
void SPIClass::begin()
{
uint8_t sreg = SREG;
noInterrupts(); // Protect from a scheduler and prevent transactionBegin
if (!initialized) {
// Set SS to high so a connected chip will be "deselected" by default
uint8_t port = digitalPinToPort(SS);
uint8_t bit = digitalPinToBitMask(SS);
volatile uint8_t *reg = portModeRegister(port);
// if the SS pin is not already configured as an output
// then set it high (to enable the internal pull-up resistor)
if(!(*reg & bit)){
digitalWrite(SS, HIGH);
}
// When the SS pin is set as OUTPUT, it can be used as
// a general purpose output port (it doesn't influence
// SPI operations).
pinMode(SS, OUTPUT);
// Warning: if the SS pin ever becomes a LOW INPUT then SPI
// automatically switches to Slave, so the data direction of
// the SS pin MUST be kept as OUTPUT.
SPCR |= _BV(MSTR);
SPCR |= _BV(SPE);
// Set direction register for SCK and MOSI pin.
// MISO pin automatically overrides to INPUT.
// By doing this AFTER enabling SPI, we avoid accidentally
// clocking in a single bit since the lines go directly
// from "input" to SPI control.
// http://code.google.com/p/arduino/issues/detail?id=888
pinMode(SCK, OUTPUT);
pinMode(MOSI, OUTPUT);
}
initialized++; // reference count
SREG = sreg;
}
void SPIClass::end() {
uint8_t sreg = SREG;
noInterrupts(); // Protect from a scheduler and prevent transactionBegin
// Decrease the reference counter
if (initialized)
initialized--;
// If there are no more references disable SPI
if (!initialized) {
SPCR &= ~_BV(SPE);
interruptMode = 0;
#ifdef SPI_TRANSACTION_MISMATCH_LED
inTransactionFlag = 0;
#endif
}
SREG = sreg;
}
// mapping of interrupt numbers to bits within SPI_AVR_EIMSK
#if defined(__AVR_ATmega32U4__)
#define SPI_INT0_MASK (1<<INT0)
#define SPI_INT1_MASK (1<<INT1)
#define SPI_INT2_MASK (1<<INT2)
#define SPI_INT3_MASK (1<<INT3)
#define SPI_INT4_MASK (1<<INT6)
#elif defined(__AVR_AT90USB646__) || defined(__AVR_AT90USB1286__)
#define SPI_INT0_MASK (1<<INT0)
#define SPI_INT1_MASK (1<<INT1)
#define SPI_INT2_MASK (1<<INT2)
#define SPI_INT3_MASK (1<<INT3)
#define SPI_INT4_MASK (1<<INT4)
#define SPI_INT5_MASK (1<<INT5)
#define SPI_INT6_MASK (1<<INT6)
#define SPI_INT7_MASK (1<<INT7)
#elif defined(EICRA) && defined(EICRB) && defined(EIMSK)
#define SPI_INT0_MASK (1<<INT4)
#define SPI_INT1_MASK (1<<INT5)
#define SPI_INT2_MASK (1<<INT0)
#define SPI_INT3_MASK (1<<INT1)
#define SPI_INT4_MASK (1<<INT2)
#define SPI_INT5_MASK (1<<INT3)
#define SPI_INT6_MASK (1<<INT6)
#define SPI_INT7_MASK (1<<INT7)
#else
#ifdef INT0
#define SPI_INT0_MASK (1<<INT0)
#endif
#ifdef INT1
#define SPI_INT1_MASK (1<<INT1)
#endif
#ifdef INT2
#define SPI_INT2_MASK (1<<INT2)
#endif
#endif
void SPIClass::usingInterrupt(uint8_t interruptNumber)
{
uint8_t mask = 0;
uint8_t sreg = SREG;
noInterrupts(); // Protect from a scheduler and prevent transactionBegin
switch (interruptNumber) {
#ifdef SPI_INT0_MASK
case 0: mask = SPI_INT0_MASK; break;
#endif
#ifdef SPI_INT1_MASK
case 1: mask = SPI_INT1_MASK; break;
#endif
#ifdef SPI_INT2_MASK
case 2: mask = SPI_INT2_MASK; break;
#endif
#ifdef SPI_INT3_MASK
case 3: mask = SPI_INT3_MASK; break;
#endif
#ifdef SPI_INT4_MASK
case 4: mask = SPI_INT4_MASK; break;
#endif
#ifdef SPI_INT5_MASK
case 5: mask = SPI_INT5_MASK; break;
#endif
#ifdef SPI_INT6_MASK
case 6: mask = SPI_INT6_MASK; break;
#endif
#ifdef SPI_INT7_MASK
case 7: mask = SPI_INT7_MASK; break;
#endif
default:
interruptMode = 2;
break;
}
interruptMask |= mask;
if (!interruptMode)
interruptMode = 1;
SREG = sreg;
}
void SPIClass::notUsingInterrupt(uint8_t interruptNumber)
{
// Once in mode 2 we can't go back to 0 without a proper reference count
if (interruptMode == 2)
return;
uint8_t mask = 0;
uint8_t sreg = SREG;
noInterrupts(); // Protect from a scheduler and prevent transactionBegin
switch (interruptNumber) {
#ifdef SPI_INT0_MASK
case 0: mask = SPI_INT0_MASK; break;
#endif
#ifdef SPI_INT1_MASK
case 1: mask = SPI_INT1_MASK; break;
#endif
#ifdef SPI_INT2_MASK
case 2: mask = SPI_INT2_MASK; break;
#endif
#ifdef SPI_INT3_MASK
case 3: mask = SPI_INT3_MASK; break;
#endif
#ifdef SPI_INT4_MASK
case 4: mask = SPI_INT4_MASK; break;
#endif
#ifdef SPI_INT5_MASK
case 5: mask = SPI_INT5_MASK; break;
#endif
#ifdef SPI_INT6_MASK
case 6: mask = SPI_INT6_MASK; break;
#endif
#ifdef SPI_INT7_MASK
case 7: mask = SPI_INT7_MASK; break;
#endif
default:
break;
// this case can't be reached
}
interruptMask &= ~mask;
if (!interruptMask)
interruptMode = 0;
SREG = sreg;
}

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/*
* Copyright (c) 2010 by Cristian Maglie <c.maglie@arduino.cc>
* Copyright (c) 2014 by Paul Stoffregen <paul@pjrc.com> (Transaction API)
* Copyright (c) 2014 by Matthijs Kooijman <matthijs@stdin.nl> (SPISettings AVR)
* Copyright (c) 2014 by Andrew J. Kroll <xxxajk@gmail.com> (atomicity fixes)
* SPI Master library for arduino.
*
* This file is free software; you can redistribute it and/or modify
* it under the terms of either the GNU General Public License version 2
* or the GNU Lesser General Public License version 2.1, both as
* published by the Free Software Foundation.
*/
#ifndef _SPI_H_INCLUDED
#define _SPI_H_INCLUDED
#include <Arduino.h>
// SPI_HAS_TRANSACTION means SPI has beginTransaction(), endTransaction(),
// usingInterrupt(), and SPISetting(clock, bitOrder, dataMode)
#define SPI_HAS_TRANSACTION 1
// SPI_HAS_NOTUSINGINTERRUPT means that SPI has notUsingInterrupt() method
#define SPI_HAS_NOTUSINGINTERRUPT 1
// SPI_ATOMIC_VERSION means that SPI has atomicity fixes and what version.
// This way when there is a bug fix you can check this define to alert users
// of your code if it uses better version of this library.
// This also implies everything that SPI_HAS_TRANSACTION as documented above is
// available too.
#define SPI_ATOMIC_VERSION 1
// Uncomment this line to add detection of mismatched begin/end transactions.
// A mismatch occurs if other libraries fail to use SPI.endTransaction() for
// each SPI.beginTransaction(). Connect an LED to this pin. The LED will turn
// on if any mismatch is ever detected.
//#define SPI_TRANSACTION_MISMATCH_LED 5
#ifndef LSBFIRST
#define LSBFIRST 0
#endif
#ifndef MSBFIRST
#define MSBFIRST 1
#endif
#define SPI_CLOCK_DIV4 0x00
#define SPI_CLOCK_DIV16 0x01
#define SPI_CLOCK_DIV64 0x02
#define SPI_CLOCK_DIV128 0x03
#define SPI_CLOCK_DIV2 0x04
#define SPI_CLOCK_DIV8 0x05
#define SPI_CLOCK_DIV32 0x06
#define SPI_MODE0 0x00
#define SPI_MODE1 0x04
#define SPI_MODE2 0x08
#define SPI_MODE3 0x0C
#define SPI_MODE_MASK 0x0C // CPOL = bit 3, CPHA = bit 2 on SPCR
#define SPI_CLOCK_MASK 0x03 // SPR1 = bit 1, SPR0 = bit 0 on SPCR
#define SPI_2XCLOCK_MASK 0x01 // SPI2X = bit 0 on SPSR
// define SPI_AVR_EIMSK for AVR boards with external interrupt pins
#if defined(EIMSK)
#define SPI_AVR_EIMSK EIMSK
#elif defined(GICR)
#define SPI_AVR_EIMSK GICR
#elif defined(GIMSK)
#define SPI_AVR_EIMSK GIMSK
#endif
class SPISettings {
public:
SPISettings(uint32_t clock, uint8_t bitOrder, uint8_t dataMode) {
if (__builtin_constant_p(clock)) {
init_AlwaysInline(clock, bitOrder, dataMode);
} else {
init_MightInline(clock, bitOrder, dataMode);
}
}
SPISettings() {
init_AlwaysInline(4000000, MSBFIRST, SPI_MODE0);
}
private:
void init_MightInline(uint32_t clock, uint8_t bitOrder, uint8_t dataMode) {
init_AlwaysInline(clock, bitOrder, dataMode);
}
void init_AlwaysInline(uint32_t clock, uint8_t bitOrder, uint8_t dataMode)
__attribute__((__always_inline__)) {
// Clock settings are defined as follows. Note that this shows SPI2X
// inverted, so the bits form increasing numbers. Also note that
// fosc/64 appears twice
// SPR1 SPR0 ~SPI2X Freq
// 0 0 0 fosc/2
// 0 0 1 fosc/4
// 0 1 0 fosc/8
// 0 1 1 fosc/16
// 1 0 0 fosc/32
// 1 0 1 fosc/64
// 1 1 0 fosc/64
// 1 1 1 fosc/128
// We find the fastest clock that is less than or equal to the
// given clock rate. The clock divider that results in clock_setting
// is 2 ^^ (clock_div + 1). If nothing is slow enough, we'll use the
// slowest (128 == 2 ^^ 7, so clock_div = 6).
uint8_t clockDiv;
// When the clock is known at compiletime, use this if-then-else
// cascade, which the compiler knows how to completely optimize
// away. When clock is not known, use a loop instead, which generates
// shorter code.
if (__builtin_constant_p(clock)) {
if (clock >= F_CPU / 2) {
clockDiv = 0;
} else if (clock >= F_CPU / 4) {
clockDiv = 1;
} else if (clock >= F_CPU / 8) {
clockDiv = 2;
} else if (clock >= F_CPU / 16) {
clockDiv = 3;
} else if (clock >= F_CPU / 32) {
clockDiv = 4;
} else if (clock >= F_CPU / 64) {
clockDiv = 5;
} else {
clockDiv = 6;
}
} else {
uint32_t clockSetting = F_CPU / 2;
clockDiv = 0;
while (clockDiv < 6 && clock < clockSetting) {
clockSetting /= 2;
clockDiv++;
}
}
// Compensate for the duplicate fosc/64
if (clockDiv == 6)
clockDiv = 7;
// Invert the SPI2X bit
clockDiv ^= 0x1;
// Pack into the SPISettings class
spcr = _BV(SPE) | _BV(MSTR) | ((bitOrder == LSBFIRST) ? _BV(DORD) : 0) |
(dataMode & SPI_MODE_MASK) | ((clockDiv >> 1) & SPI_CLOCK_MASK);
spsr = clockDiv & SPI_2XCLOCK_MASK;
}
uint8_t spcr;
uint8_t spsr;
friend class SPIClass;
};
class SPIClass {
public:
// Initialize the SPI library
static void begin();
// If SPI is used from within an interrupt, this function registers
// that interrupt with the SPI library, so beginTransaction() can
// prevent conflicts. The input interruptNumber is the number used
// with attachInterrupt. If SPI is used from a different interrupt
// (eg, a timer), interruptNumber should be 255.
static void usingInterrupt(uint8_t interruptNumber);
// And this does the opposite.
static void notUsingInterrupt(uint8_t interruptNumber);
// Note: the usingInterrupt and notUsingInterrupt functions should
// not to be called from ISR context or inside a transaction.
// For details see:
// https://github.com/arduino/Arduino/pull/2381
// https://github.com/arduino/Arduino/pull/2449
// Before using SPI.transfer() or asserting chip select pins,
// this function is used to gain exclusive access to the SPI bus
// and configure the correct settings.
inline static void beginTransaction(SPISettings settings) {
if (interruptMode > 0) {
uint8_t sreg = SREG;
noInterrupts();
#ifdef SPI_AVR_EIMSK
if (interruptMode == 1) {
interruptSave = SPI_AVR_EIMSK;
SPI_AVR_EIMSK &= ~interruptMask;
SREG = sreg;
} else
#endif
{
interruptSave = sreg;
}
}
#ifdef SPI_TRANSACTION_MISMATCH_LED
if (inTransactionFlag) {
pinMode(SPI_TRANSACTION_MISMATCH_LED, OUTPUT);
digitalWrite(SPI_TRANSACTION_MISMATCH_LED, HIGH);
}
inTransactionFlag = 1;
#endif
SPCR = settings.spcr;
SPSR = settings.spsr;
}
// Write to the SPI bus (MOSI pin) and also receive (MISO pin)
inline static uint8_t transfer(uint8_t data) {
SPDR = data;
/*
* The following NOP introduces a small delay that can prevent the wait
* loop form iterating when running at the maximum speed. This gives
* about 10% more speed, even if it seems counter-intuitive. At lower
* speeds it is unnoticed.
*/
asm volatile("nop");
while (!(SPSR & _BV(SPIF))) ; // wait
return SPDR;
}
inline static uint16_t transfer16(uint16_t data) {
union { uint16_t val; struct { uint8_t lsb; uint8_t msb; }; } in, out;
in.val = data;
if (!(SPCR & _BV(DORD))) {
SPDR = in.msb;
asm volatile("nop"); // See transfer(uint8_t) function
while (!(SPSR & _BV(SPIF))) ;
out.msb = SPDR;
SPDR = in.lsb;
asm volatile("nop");
while (!(SPSR & _BV(SPIF))) ;
out.lsb = SPDR;
} else {
SPDR = in.lsb;
asm volatile("nop");
while (!(SPSR & _BV(SPIF))) ;
out.lsb = SPDR;
SPDR = in.msb;
asm volatile("nop");
while (!(SPSR & _BV(SPIF))) ;
out.msb = SPDR;
}
return out.val;
}
inline static void transfer(void *buf, size_t count) {
if (count == 0) return;
uint8_t *p = (uint8_t *)buf;
SPDR = *p;
while (--count > 0) {
uint8_t out = *(p + 1);
while (!(SPSR & _BV(SPIF))) ;
uint8_t in = SPDR;
SPDR = out;
*p++ = in;
}
while (!(SPSR & _BV(SPIF))) ;
*p = SPDR;
}
// After performing a group of transfers and releasing the chip select
// signal, this function allows others to access the SPI bus
inline static void endTransaction(void) {
#ifdef SPI_TRANSACTION_MISMATCH_LED
if (!inTransactionFlag) {
pinMode(SPI_TRANSACTION_MISMATCH_LED, OUTPUT);
digitalWrite(SPI_TRANSACTION_MISMATCH_LED, HIGH);
}
inTransactionFlag = 0;
#endif
if (interruptMode > 0) {
#ifdef SPI_AVR_EIMSK
uint8_t sreg = SREG;
#endif
noInterrupts();
#ifdef SPI_AVR_EIMSK
if (interruptMode == 1) {
SPI_AVR_EIMSK = interruptSave;
SREG = sreg;
} else
#endif
{
SREG = interruptSave;
}
}
}
// Disable the SPI bus
static void end();
// This function is deprecated. New applications should use
// beginTransaction() to configure SPI settings.
inline static void setBitOrder(uint8_t bitOrder) {
if (bitOrder == LSBFIRST) SPCR |= _BV(DORD);
else SPCR &= ~(_BV(DORD));
}
// This function is deprecated. New applications should use
// beginTransaction() to configure SPI settings.
inline static void setDataMode(uint8_t dataMode) {
SPCR = (SPCR & ~SPI_MODE_MASK) | dataMode;
}
// This function is deprecated. New applications should use
// beginTransaction() to configure SPI settings.
inline static void setClockDivider(uint8_t clockDiv) {
SPCR = (SPCR & ~SPI_CLOCK_MASK) | (clockDiv & SPI_CLOCK_MASK);
SPSR = (SPSR & ~SPI_2XCLOCK_MASK) | ((clockDiv >> 2) & SPI_2XCLOCK_MASK);
}
// These undocumented functions should not be used. SPI.transfer()
// polls the hardware flag which is automatically cleared as the
// AVR responds to SPI's interrupt
inline static void attachInterrupt() { SPCR |= _BV(SPIE); }
inline static void detachInterrupt() { SPCR &= ~_BV(SPIE); }
private:
static uint8_t initialized;
static uint8_t interruptMode; // 0=none, 1=mask, 2=global
static uint8_t interruptMask; // which interrupts to mask
static uint8_t interruptSave; // temp storage, to restore state
#ifdef SPI_TRANSACTION_MISMATCH_LED
static uint8_t inTransactionFlag;
#endif
};
extern SPIClass SPI;
#endif