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add new parameter to specify retries for mbus-serial-scan and

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mbus-tcp-scan
make primary scan to retransmit SND_NKE in case of timeout so it's more
reliable but also slowlier
keep default behaviour, no retransmission
equalize mbus-serial-scan and mbus-tcp-scan
update man page
This commit is contained in:
Stefan Wahren 2013-04-25 21:19:41 +02:00
parent 65c036f0d2
commit ea0c6c3455
3 changed files with 133 additions and 48 deletions
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11
bin/libmbus.pod
View File

@ -10,9 +10,9 @@ the communication with M-Bus devices.
B<mbus-serial-switch-baudrate> [-b BAUDRATE] device address target-baudrate
B<mbus-serial-scan> [-d] [-b BAUDRATE] device
B<mbus-serial-scan> [-d] [-b BAUDRATE] [-r RETRIES] device
B<mbus-tcp-scan> [-d] host port
B<mbus-tcp-scan> [-d] [-r RETRIES] host port
B<mbus-serial-scan-secondary> [-d] [-b BAUDRATE] device [address-mask]
@ -72,6 +72,13 @@ Note that your MBus gateway and/or MBus device will most likely support only
a subset of these. The most commonlu used/supported rates are probably 9600, 2400
and 300.
=item B<-r> I<RETRIES>
Maximum retransmissions. In case a MBus device doesn't reply to a request or
the response is erroneous, the MBus master can send a retransmissions.
libmbus supports the following range of retransmission: 0 until 9
=item B<-d>
Enable debugging messages.

91
bin/mbus-serial-scan.c
View File

@ -15,6 +15,37 @@
static int debug = 0;
int ping_address(mbus_handle *handle, mbus_frame *reply, int address)
{
int i, ret = MBUS_RECV_RESULT_ERROR;
memset((void *)reply, 0, sizeof(mbus_frame));
for (i = 0; i <= handle->max_retry; i++)
{
if (debug)
{
printf("%d ", address);
fflush(stdout);
}
if (mbus_send_ping_frame(handle, address, 0) == -1)
{
printf("Scan failed. Could not send ping frame: %s\n", mbus_error_str());
return MBUS_RECV_RESULT_ERROR;
}
ret = mbus_recv_frame(handle, reply);
if (ret != MBUS_RECV_RESULT_TIMEOUT)
{
return ret;
}
}
return ret;
}
//------------------------------------------------------------------------------
// Primary addressing scanning of mbus devices.
//------------------------------------------------------------------------------
@ -23,7 +54,7 @@ main(int argc, char **argv)
{
mbus_handle *handle;
char *device;
int address, baudrate = 9600;
int address, baudrate = 9600, retries = 0;
int ret;
if (argc == 2)
@ -40,15 +71,39 @@ main(int argc, char **argv)
baudrate = atoi(argv[2]);
device = argv[3];
}
else if (argc == 4 && strcmp(argv[1], "-r") == 0)
{
retries = atoi(argv[2]);
device = argv[3];
}
else if (argc == 5 && strcmp(argv[1], "-d") == 0 && strcmp(argv[2], "-b") == 0)
{
debug = 1;
baudrate = atoi(argv[3]);
device = argv[4];
}
else if (argc == 5 && strcmp(argv[1], "-d") == 0 && strcmp(argv[2], "-r") == 0)
{
debug = 1;
retries = atoi(argv[3]);
device = argv[4];
}
else if (argc == 6 && strcmp(argv[1], "-b") == 0 && strcmp(argv[3], "-r") == 0)
{
baudrate = atoi(argv[2]);
retries = atoi(argv[4]);
device = argv[5];
}
else if (argc == 7 && strcmp(argv[1], "-d") == 0 && strcmp(argv[2], "-b") == 0 && strcmp(argv[4], "-r") == 0)
{
debug = 1;
baudrate = atoi(argv[3]);
retries = atoi(argv[5]);
device = argv[6];
}
else
{
fprintf(stderr, "usage: %s [-d] [-b BAUDRATE] device\n", argv[0]);
printf("usage: %s [-d] [-b BAUDRATE] [-r RETRIES] device\n", argv[0]);
return 0;
}
@ -60,13 +115,19 @@ main(int argc, char **argv)
if ((handle = mbus_context_serial(device)) == NULL)
{
fprintf(stderr, "Could not initialize M-Bus context: %s\n", mbus_error_str());
printf("Scan failed: Could not initialize M-Bus context: %s\n", mbus_error_str());
return 1;
}
if (mbus_connect(handle) == -1)
{
printf("Failed to setup connection to M-bus gateway\n");
printf("Scan failed: Could not setup connection to M-bus gateway: %s\n", mbus_error_str());
return 1;
}
if (mbus_context_set_option(handle, MBUS_OPTION_MAX_RETRY, retries) == -1)
{
printf("Failed to set retry count\n");
return 1;
}
@ -83,30 +144,13 @@ main(int argc, char **argv)
{
mbus_frame reply;
memset((void *)&reply, 0, sizeof(mbus_frame));
if (debug)
{
printf("%d ", address);
fflush(stdout);
}
if (mbus_send_ping_frame(handle, address, 0) == -1)
{
printf("Scan failed. Could not send ping frame: %s\n", mbus_error_str());
return 1;
}
ret = ping_address(handle, &reply, address);
ret = mbus_recv_frame(handle, &reply);
if (ret == MBUS_RECV_RESULT_TIMEOUT)
{
continue;
}
if (debug)
printf("\n");
if (ret == MBUS_RECV_RESULT_INVALID)
{
/* check for more data (collision) */
@ -121,10 +165,9 @@ main(int argc, char **argv)
if (mbus_purge_frames(handle))
{
printf("Collision at address %d\n", address);
continue;
}
printf("Found a M-Bus device at address %d\n", address);
}
}

79
bin/mbus-tcp-scan.c
View File

@ -13,15 +13,48 @@
#include <stdio.h>
#include <mbus/mbus.h>
static int debug = 0;
int ping_address(mbus_handle *handle, mbus_frame *reply, int address)
{
int i, ret = MBUS_RECV_RESULT_ERROR;
memset((void *)reply, 0, sizeof(mbus_frame));
for (i = 0; i <= handle->max_retry; i++)
{
if (debug)
{
printf("%d ", address);
fflush(stdout);
}
if (mbus_send_ping_frame(handle, address, 0) == -1)
{
printf("Scan failed. Could not send ping frame: %s\n", mbus_error_str());
return MBUS_RECV_RESULT_ERROR;
}
ret = mbus_recv_frame(handle, reply);
if (ret != MBUS_RECV_RESULT_TIMEOUT)
{
return ret;
}
}
return ret;
}
//------------------------------------------------------------------------------
// Execution starts here:
// Primary addressing scanning of mbus devices.
//------------------------------------------------------------------------------
int
main(int argc, char **argv)
{
mbus_handle *handle;
char *host;
int port, address, debug = 0;
int port, address, retries = 0;
int ret;
if (argc == 3)
@ -35,9 +68,22 @@ main(int argc, char **argv)
host = argv[2];
port = atoi(argv[3]);
}
else if (argc == 5 && strcmp(argv[1], "-r") == 0)
{
retries = atoi(argv[2]);
host = argv[3];
port = atoi(argv[4]);
}
else if (argc == 6 && strcmp(argv[1], "-d") == 0 && strcmp(argv[2], "-r") == 0)
{
debug = 1;
retries = atoi(argv[3]);
host = argv[4];
port = atoi(argv[5]);
}
else
{
printf("usage: %s [-d] host port\n", argv[0]);
printf("usage: %s [-d] [-r RETRIES] host port\n", argv[0]);
return 0;
}
@ -55,7 +101,13 @@ main(int argc, char **argv)
if (mbus_connect(handle) == -1)
{
printf("Scan failed: Could not setup connection to M-bus gateway: %s\n", mbus_error_str());
printf("Scan failed: Could not setup connection to M-bus gateway: %s\n", mbus_error_str());
return 1;
}
if (mbus_context_set_option(handle, MBUS_OPTION_MAX_RETRY, retries) == -1)
{
printf("Failed to set retry count\n");
return 1;
}
@ -66,30 +118,13 @@ main(int argc, char **argv)
{
mbus_frame reply;
memset((void *)&reply, 0, sizeof(mbus_frame));
if (debug)
{
printf("%d ", address);
fflush(stdout);
}
if (mbus_send_ping_frame(handle, address, 0) == -1)
{
printf("Scan failed. Could not send ping frame: %s\n", mbus_error_str());
return 1;
}
ret = ping_address(handle, &reply, address);
ret = mbus_recv_frame(handle, &reply);
if (ret == MBUS_RECV_RESULT_TIMEOUT)
{
continue;
}
if (debug)
printf("\n");
if (ret == MBUS_RECV_RESULT_INVALID)
{
/* check for more data (collision) */