//
//called when the OnBus button is pressed
//
void CCanTestMFCDlg::OnOnBus()
{
int stat;
int handle;
char tmpStr[200];
//init canlib
canInitializeLibrary();
//open channel 0
handle = canOpenChannel(0, canOPEN_EXCLUSIVE);
if (handle < 0) {
sprintf(tmpStr, "ERROR: canOpenChannel() handle returned: %d", handle);
AfxMessageBox(tmpStr);
}
//set up the bus
stat = canSetBusParams(handle, canBITRATE_125K, 0, 0, 0, 0, 0);
if (stat < 0) {
AfxMessageBox("ERROR: canSetBusParams().");
}
//go on bus
stat = canBusOn(handle);
if (stat < 0) {
AfxMessageBox("ERROR: canBusOn().");
}
//set notification
stat = canSetNotify(handle, this->GetSafeHwnd() , canNOTIFY_RX | canNOTIFY_ERROR | canNOTIFY_STATUS | canEVENT_TX | canNOTIFY_ENVVAR);
//save the can channel handle in the global variable m_handle
m_handle = handle;
}
int main(int argc, char *argv[])
{
canStatus stat;
canHandle hnd;
int channelRx;
int channelTx;
if (argc != 3) {
printUsageAndExit(argv[0]);
}
{
char *endPtr = NULL;
errno = 0;
channelRx = strtol(argv[1], &endPtr, 10);
if ( (errno != 0) || ((channelRx == 0) && (endPtr == argv[1])) ) {
printUsageAndExit(argv[0]);
}
channelTx = strtol(argv[2], &endPtr, 10);
if ( (errno != 0) || ((channelTx == 0) && (endPtr == argv[2])) ) {
printUsageAndExit(argv[0]);
}
}
canInitializeLibrary();
hnd = canOpenChannel(channelRx, canOPEN_REQUIRE_EXTENDED);
if (hnd < 0) {
printf("canOpenChannel %d", channelRx);
check("", hnd);
return -1;
}
stat = canBusOff(hnd);
check("canBusOff", stat);
if (stat != canOK) {
goto ErrorExit;
}
stat = canSetNotify(hnd, callback, canNOTIFY_ERROR | canNOTIFY_STATUS, NULL);
check("canSetNotify", stat);
if (stat != canOK) {
goto ErrorExit;
}
stat = canSetBusParams(hnd, bitrate, 0, 0, 0, 0, 0);
check("canSetBusParams", stat);
if (stat != canOK) {
goto ErrorExit;
}
stat = canBusOn(hnd);
check("canBusOn", stat);
if (stat != canOK) {
goto ErrorExit;
}
incBusLoad(channelTx, canOPEN_REQUIRE_EXTENDED, 0);
testBusLoad(hnd);
incBusLoad(channelTx, canOPEN_REQUIRE_EXTENDED, 100);
testBusLoad(hnd);
testBusLoad(hnd);
incBusLoad(channelTx, canOPEN_REQUIRE_EXTENDED, 300);
testBusLoad(hnd);
testBusLoad(hnd);
ErrorExit:
stat = canBusOff(hnd);
check("canBusOff", stat);
stat = canClose(hnd);
check("canClose", stat);
stat = canUnloadLibrary();
check("canUnloadLibrary", stat);
return 0;
}
