/* Function: ExtProcessArgs ====================================================
* Abstract:
* Process the arguments specified by the user when invoking the target
* program. In the case of this TCPIP example the args handled by external
* mode are:
* o -port #
* specify tcpip port number
*
* o -w
* wait for a start packet from the target before starting to execute
* the real-time model code
*
* If any unrecognized options are encountered, ignore them.
*
* NOTES:
* o An error string is returned on failure, NULL is returned on success.
*
* o IMPORTANT!!!
* As the arguments are processed, their strings must be NULL'd out in
* the argv array. ext_svr will search argv when this function returns,
* and if any non-NULL entries are encountered an "unrecognized option"
* packet will be displayed.
*/
PUBLIC const char_T *ExtProcessArgs(
ExtUserData *UD,
const int_T argc,
const char_T *argv[])
{
const char_T *error = NULL;
int_T count = 1;
#if defined(ON_TARGET_WAIT_FOR_START) && ON_TARGET_WAIT_FOR_START == 1
boolean_T waitForStartPkt = TRUE;
#else
boolean_T waitForStartPkt = FALSE;
#endif
while(count < argc) {
const char_T *option = argv[count++];
if (option == NULL) continue;
if (strcmp(option, "-w") == 0) {
/*
* -w (wait for packet from host) option
*/
waitForStartPkt = TRUE;
argv[count-1] = NULL;
} else if (strcmp(option, "-ignore-arg") == 0 && (count != argc)) {
/*
* Special argument used by sbruntests to mark an executable
* with a particular ID allowing the executable to be killed
* when the sbruntests session is killed.
*
* -ignore-arg SBRUNTESTS_SESSION_ID#
*/
count++;
argv[count-2] = NULL;
argv[count-1] = NULL;
}
}
assert(UD != NULL);
UD->waitForStartPkt = waitForStartPkt;
#ifdef VXWORKS
/* Store argv and argc for processing in ExtUserDataSetPort.
* rtIOStreamOpen will be called in ExtUserDataSetPort */
UD->processArgsArgc = argc;
UD->processArgsArgv = (const char_T **) argv;
#else
/* rtIOStreamOpen combines argument processing and opening the stream */
UD->streamID = rtIOStreamOpen(argc, (void *) argv);
#endif
return(error);
} /* end ExtProcessArgs */
int main(void)
{
/* Initialize rtiostream channel */
rtIOStreamOpen(0,NULL);
while (1) {
serial_simple_step();
}
}
PUBLIC void ExtUserDataSetPort(ExtUserData *UD, const int_T port)
{
#define PORT_NUM_STR_DEFAULT "00255\0"
#define PORT_NUM_STR_LEN 6 /* allocates extra space for sprintf below */
#define PORT_ARG_STR "-port"
/* create an extended argc and argv that includes -port */
const int_T argc = UD->processArgsArgc + 2;
const char_T * portArgStr = PORT_ARG_STR;
char_T portNumStr[PORT_NUM_STR_LEN] = PORT_NUM_STR_DEFAULT;
const char_T ** argv = (const char_T **) calloc(argc, sizeof(char_T *));
int_T count;
if (argv == NULL) {
#ifndef EXTMODE_DISABLEPRINTF
(void)fprintf(stderr,
"ExtUserDataSetPort: Memory allocation error.\n");
#endif
/* any unprocessed args in the original argv will be caught by caller */
return;
}
/* set a non-default port if valid */
if ( (port >=255) && (port <= 65535)) {
sprintf(portNumStr, "%5d", port);
}
/* copy original argv */
for (count = 0; count < UD->processArgsArgc; count++) {
argv[count] = UD->processArgsArgv[count];
}
/* add port */
argv[argc-2] = portArgStr;
argv[argc-1] = (const char_T *) portNumStr;
/* rtIOStreamOpen combines argument processing and opening the stream */
UD->streamID = rtIOStreamOpen(argc, (void *) argv);
/* We assume -port argument has been processed by rtIOStream.
* Copy back other elements of processed argv which should have been set to NULL. */
for (count = 0; count < UD->processArgsArgc; count++) {
UD->processArgsArgv[count] = argv[count];
}
free(argv);
} /* end ExtUserDataSetPort */
