/* Function: ProcessArmTriggerPkt ==============================================
* Receive and process the EXT_ARM_TRIGGER packet.
*/
PRIVATE boolean_T ProcessArmTriggerPkt(const int pktSize, int_T numSampTimes)
{
const char *pkt;
int32_T upInfoIdx;
boolean_T error = EXT_NO_ERROR;
pkt = GetPkt(pktSize);
if (pkt == NULL) {
SendResponseStatus(EXT_ARM_TRIGGER_RESPONSE,
NOT_ENOUGH_MEMORY,
-1);
error = EXT_ERROR;
goto EXIT_POINT;
}
/* Extract upInfoIdx */
(void)memcpy(&upInfoIdx, pkt, sizeof(int32_T));
PRINT_VERBOSE(
("got EXT_ARM_TRIGGER packet for upInfoIdx : %d\n", upInfoIdx));
UploadArmTrigger(upInfoIdx, numSampTimes);
error = SendResponseStatus(EXT_ARM_TRIGGER_RESPONSE,
STATUS_OK,
upInfoIdx);
if (error != EXT_NO_ERROR) goto EXIT_POINT;
EXIT_POINT:
return(error);
} /* end ProcessArmTriggerPkt */
/* Function: ProcessCancelLoggingArmTriggerPkt ===========================================
* Receive and process the EXT_CANCEL_LOGGING or EXT_ARM_TRIGGER packet.
*/
PRIVATE boolean_T ProcessCancelLoggingArmTriggerPkt(const ExtModeAction ACTION_ID,
const int pktSize,
int_T numSampTimes)
{
const char *pkt;
int32_T upInfoIdx;
boolean_T error = EXT_NO_ERROR;
printf("Inside ProcessCancelLoggingArmTriggerPkt \n"); //DAREN :added this here
pkt = GetPkt(pktSize);
if (pkt == NULL) {
SendResponseStatus(ACTION_ID, NOT_ENOUGH_MEMORY, -1);
return(EXT_ERROR);
}
(void)memcpy(&upInfoIdx, pkt, sizeof(int32_T)); /* Extract upInfoIdx */
switch(ACTION_ID) {
case EXT_CANCEL_LOGGING_RESPONSE:
#ifndef EXTMODE_DISABLEPRINTF
PRINT_VERBOSE(
("got EXT_CANCEL_LOGGING packet for upInfoIdx : %d\n", upInfoIdx));
#endif
UploadCancelLogging(upInfoIdx);
break;
case EXT_ARM_TRIGGER_RESPONSE:
#ifndef EXTMODE_DISABLEPRINTF
PRINT_VERBOSE(
("got EXT_ARM_TRIGGER packet for upInfoIdx : %d\n", upInfoIdx));
#endif
UploadArmTrigger(upInfoIdx, numSampTimes);
break;
default:
break;
}
error = SendResponseStatus(ACTION_ID, STATUS_OK, upInfoIdx);
return(error); /* Can be EXT_NO_ERROR */
} /* end ProcessCancelLoggingArmTriggerPkt */
/* Function: rt_MsgServerWork ==================================================
* Abstract:
* If not connected, establish communication of the message line and the
* data upload line. If connected, send/receive messages and parameters
* on the message line.
*/
PUBLIC boolean_T rt_MsgServerWork(SimStruct *S)
{
MsgHeader msgHdr;
boolean_T hdrAvail;
boolean_T error = EXT_NO_ERROR;
boolean_T disconnectOnError = FALSE;
/*
* If not connected, attempt to make connection to host.
*/
if (!connected) {
error = ExtOpenConnection(extUD,&connected);
if (error != EXT_NO_ERROR) goto EXIT_POINT;
}
/*
* If ExtOpenConnection is not blocking and there are no pending
* requests to open a connection, we'll still be unconnected.
*/
if (!connected) goto EXIT_POINT; /* nothing do do */
/*
* Process messages.
*/
/* Wait for a message. */
error = GetMsgHdr(&msgHdr, &hdrAvail);
if (error != EXT_NO_ERROR) {
printf("\nError occured getting message header.\n");
disconnectOnError = TRUE;
goto EXIT_POINT;
}
if (!hdrAvail) goto EXIT_POINT; /* nothing to do */
/*
* This is the first message. Should contain the string:
* 'ext-mode'. Its contents are not important to us.
* It is used as a flag to start the handshaking process.
*/
if (!commInitialized) {
msgHdr.type = EXT_CONNECT;
}
/*
* At this point we know that we have a message: process it.
*/
switch(msgHdr.type) {
case EXT_GET_TIME:
{
time_T t = ssGetT(S);
/* Skip verbosity print out - we get too many of these */
/*PRINT_VERBOSE(("got EXT_GET_TIME message.\n"));*/
error = SendMsgToHost(
EXT_GET_TIME_RESPONSE,sizeof(time_T),(char_T *)&t);
if (error != EXT_NO_ERROR) goto EXIT_POINT;
break;
}
case EXT_ARM_TRIGGER:
{
PRINT_VERBOSE(("got EXT_ARM_TRIGGER message.\n"));
UploadArmTrigger();
break;
}
case EXT_SELECT_SIGNALS:
{
const char *msg;
PRINT_VERBOSE(("got EXT_SELECT_SIGNALS message.\n"));
msg = GetMsg(msgHdr.size);
if (msg == NULL) {
error = EXT_ERROR;
goto EXIT_POINT;
}
error = UploadLogInfoInit(S, msg);
if (error != NO_ERR) {
printf(
"\nError in UploadLogInfoInit(). Most likely a memory\n"
"allocation error or an attempt to re-initialize the\n"
"signal selection during the data logging process\n"
"(i.e., multiple EXT_SELECT_SIGNAL messages were received\n"
"before the logging session terminated or an\n"
"EXT_CANCEL_LOGGING message was received)");
goto EXIT_POINT;
}
break;
}
case EXT_SELECT_TRIGGER:
{
const char *msg;
PRINT_VERBOSE(("got EXT_SELECT_TRIGGER message.\n"));
msg = GetMsg(msgHdr.size);
if (msg == NULL) {
error = EXT_ERROR;
goto EXIT_POINT;
}
error = UploadInitTrigger(S, msg);
if (error != EXT_NO_ERROR) {
printf("\nError in UploadInitTrigger\n");
goto EXIT_POINT;
}
break;
}
case EXT_CONNECT:
{
PRINT_VERBOSE(("got EXT_CONNECT message.\n"));
error = ProcessConnectMsg(S);
if (error != EXT_NO_ERROR) goto EXIT_POINT;
break;
}
case EXT_SETPARAM:
{
PRINT_VERBOSE(("got EXT_SETPARAM message.\n"));
error = ProcessSetParamMsg(S, msgHdr.size);
if (error != EXT_NO_ERROR) goto EXIT_POINT;
break;
}
case EXT_GETPARAMS:
{
PRINT_VERBOSE(("got EXT_GETPARAMS message.\n"));
error = ProcessGetParamsMsg(S);
if (error != EXT_NO_ERROR) goto EXIT_POINT;
break;
}
case EXT_DISCONNECT_REQUEST:
{
PRINT_VERBOSE(("got EXT_DISCONNECT_REQUEST message.\n"));
/*
* Note that from the target's point of view this is
* more a "notify" than a "request". The host needs to
* have this acknowledged before it can begin closing
* the connection.
*/
error = SendMsgToHost(EXT_DISCONNECT_REQUEST_RESPONSE, 0, NULL);
if (error != EXT_NO_ERROR) goto EXIT_POINT;
DisconnectFromHost(S);
break;
}
case EXT_MODEL_START:
PRINT_VERBOSE(("got EXT_MODEL_START message.\n"));
#ifdef VXWORKS
{
extern SEM_ID startStopSem;
semGive(startStopSem);
}
#endif
startModel = TRUE;
error = SendMsgToHost(EXT_MODEL_START_RESPONSE, 0, NULL);
if (error != EXT_NO_ERROR) goto EXIT_POINT;
break;
case EXT_MODEL_STOP:
PRINT_VERBOSE(("got EXT_MODEL_STOP message.\n"));
ssSetStopRequested(S, TRUE);
break;
case EXT_MODEL_PAUSE:
PRINT_VERBOSE(("got EXT_MODEL_PAUSE message.\n"));
modelStatus = TARGET_STATUS_PAUSED;
startModel = FALSE;
error = SendMsgToHost(EXT_MODEL_PAUSE_RESPONSE, 0, NULL);
if (error != EXT_NO_ERROR) goto EXIT_POINT;
break;
case EXT_MODEL_STEP:
PRINT_VERBOSE(("got EXT_MODEL_STEP message.\n"));
if ((modelStatus == TARGET_STATUS_PAUSED) && !startModel) {
startModel = TRUE;
}
error = SendMsgToHost(EXT_MODEL_STEP_RESPONSE, 0, NULL);
if (error != EXT_NO_ERROR) goto EXIT_POINT;
break;
case EXT_MODEL_CONTINUE:
PRINT_VERBOSE(("got EXT_MODEL_CONTINUE message.\n"));
if (modelStatus == TARGET_STATUS_PAUSED) {
modelStatus = TARGET_STATUS_RUNNING;
startModel = FALSE;
}
error = SendMsgToHost(EXT_MODEL_CONTINUE_RESPONSE, 0, NULL);
if (error != EXT_NO_ERROR) goto EXIT_POINT;
break;
case EXT_CANCEL_LOGGING:
PRINT_VERBOSE(("got EXT_CANCEL_LOGGING message.\n"));
UploadCancelLogging();
break;
default:
fprintf(stderr,"received invalid message.\n");
break;
} /* end switch */
EXIT_POINT:
if (error != EXT_NO_ERROR) {
if (disconnectOnError) {
fprintf(stderr,
"Error occured in rt_MsgServerWork.\n"
"Disconnecting from host!\n");
DisconnectFromHost(S);
/*
* Patch by Gopal Santhanam 5/25/2002 (for VXWORKS)
* If there there was a problem and we have already disconnected
* from the host, there is no point in returning that error
* back to rt_MsgServer. That would cause the task servicing
* external messages to quit. Once disconnected, we could
* just as easily resume by waiting for a new connection.
*/
#ifdef VXWORKS
error = EXT_NO_ERROR;
#endif
}
}
return(error);
} /* end rt_MsgServerWork */