145 lines
4.4 KiB
C
145 lines
4.4 KiB
C
#include <main.h>
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#include <usart.h>
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#include <PontCoopScheduler.h>
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#include <mbusComm.h>
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#include <loopCtrl.h>
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#include <signal.h>
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#include <logger.h>
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#include <frontend.h>
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typedef enum {
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IDLE,
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SEND,
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SEND_CONT,
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SENDING_DONE,
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ENABLE_FRONTEND,
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RECEIVING,
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DISABLE_FRONTEND
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} e_mbusCommState;
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typedef struct {
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e_mbusCommState state;
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uint8_t retryCnt;
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uint8_t cmd;
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uint8_t addr;
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uint8_t sendBuf[5];
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uint8_t receiveCnt;
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uint8_t receivedOctet;
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bool receiving;
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} t_mbusCommHandle;
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static t_mbusCommHandle mbusCommHandle = { .state = IDLE, .retryCnt = 0, .cmd = 0, .addr = 0, .receiveCnt = 0, .receivedOctet = 0, .receiving = false };
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static void handleRequestEngine(void *handle);
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static void timeoutHandler(void *handle) {
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logMsg("mbc timeout");
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t_mbusCommHandle *localMbusCommHandle = (t_mbusCommHandle*) handle;
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localMbusCommHandle->state = DISABLE_FRONTEND;
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localMbusCommHandle->receiving = false;
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handleRequestEngine(handle);
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}
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static void receiveNext(t_mbusCommHandle *localMbusCommHandle) {
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localMbusCommHandle->receiving = true;
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HAL_UART_Receive_IT(&mbusUart, &(localMbusCommHandle->receivedOctet), 1);
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}
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static void handleRequestEngine(void *handle) {
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t_mbusCommHandle *localMbusCommHandle = (t_mbusCommHandle*) handle;
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switch (localMbusCommHandle->state) {
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case IDLE:
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logMsg("hre state IDLE");
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break;
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case SEND:
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logMsg("hre state SEND");
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localMbusCommHandle->sendBuf[0] = 0x10;
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localMbusCommHandle->sendBuf[1] = localMbusCommHandle->cmd;
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localMbusCommHandle->sendBuf[2] = localMbusCommHandle->addr;
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localMbusCommHandle->sendBuf[3] = localMbusCommHandle->cmd + localMbusCommHandle->addr; // checksum
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localMbusCommHandle->sendBuf[4] = 0x16;
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localMbusCommHandle->state = SEND_CONT;
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// no break !!
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case SEND_CONT:
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logMsg("hre state SEND_CONT");
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signal(LED_RED, OFF);
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if (! loopActive) {
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logMsg("hre enabling loop, try %d", localMbusCommHandle->retryCnt);
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localMbusCommHandle->retryCnt++;
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loopEnable();
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schAdd(handleRequestEngine, handle, 10, 0); // give 10ms to settled the loop
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} else {
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localMbusCommHandle->retryCnt = 0;
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HAL_UART_Transmit_IT(&mbusUart, localMbusCommHandle->sendBuf, 5);
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// transition from here to SENDING_DONE is initiate by mbusCommTxCpltCallback
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// interrupt callback
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localMbusCommHandle->state = SENDING_DONE;
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}
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break;
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case SENDING_DONE:
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logMsg("hre state SENDING_DONE");
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localMbusCommHandle->state = ENABLE_FRONTEND;
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schAdd(handleRequestEngine, handle, 3, 0);
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break;
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case ENABLE_FRONTEND:
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logMsg("hre state ENABLE_FRONTEND");
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frontendEnable();
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schAdd(timeoutHandler, handle, 250, 0);
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localMbusCommHandle->state = RECEIVING;
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localMbusCommHandle->receiveCnt = 0;
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receiveNext(localMbusCommHandle);
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break;
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case RECEIVING:
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// logMsg("hre state RECEIVING");
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logMsg("hre received octet: 0x%02x: 0x%02x", localMbusCommHandle->receiveCnt, localMbusCommHandle->receivedOctet);
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localMbusCommHandle->receiveCnt += 1;
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receiveNext(localMbusCommHandle);
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break;
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case DISABLE_FRONTEND:
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logMsg("hre state DISABLE_FRONTEND");
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HAL_UART_AbortReceive(&mbusUart);
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frontendDisable();
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localMbusCommHandle->state = IDLE;
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break;
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default:
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localMbusCommHandle->state = IDLE;
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break;
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}
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}
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void mbusCommTxCpltCallback(UART_HandleTypeDef *huart) {
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schAdd(handleRequestEngine, (void*) &mbusCommHandle, 0, 0);
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}
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void mbusCommRxCpltCallback(UART_HandleTypeDef *huart) {
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if (mbusCommHandle.receiving) {
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schAdd(handleRequestEngine, (void*) &mbusCommHandle, 0, 0);
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mbusCommHandle.receiving = false;
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} else {
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logMsg("mcrx: received 0x%02x but not expected", mbusCommHandle.receivedOctet);
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}
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}
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void mbusCommRequest(uint8_t cmd, uint8_t addr) {
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if (mbusCommHandle.state == IDLE) {
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mbusCommHandle.state = SEND;
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mbusCommHandle.retryCnt = 0;
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mbusCommHandle.cmd = cmd;
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mbusCommHandle.addr = addr;
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schAdd(handleRequestEngine, (void*) &mbusCommHandle, 0, 0);
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} else {
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// busy
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}
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}
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