/**
* Open a CAN port on a Copley CAN card.
*
* Parameters:
* port The port number to open. Ports are numbered starting at zero.
* There are two ports for each card, so if the system contains
* N CAN cards, then legal port numbers range from 0 to 2*N-1.
*
* baud The baud rate to set the port to. This should be one of the
* values defined in the CopleyCAN.h header file.
*
* error If an error occurs opening the card, an appropriate error code
* will be returned here. This parameter may be passed as NULL
* if no error information is desired.
*
* Returns:
* A pointer to a local structure that should be passed to other functions.
* NULL will be returned on failure.
*/
void *CopleyCanOpen( int port, int baud, int *error )
{
int err = 0;
void *lcl;
uint32_t cmd[64];
// Allocate a structure to hold local data
lcl = ccAllocLocals();
if( lcl == NULL )
{
err = COPLEYCAN_ERR_ALLOC;
goto done;
}
// Open a handle to the device driver
err = ccOpenFile( port, lcl );
if( err )
goto freeLocals;
// Set the port's baud rate
cmd[0] = (CANCARD_CMD_SETBPS<<16) | 1;
cmd[1] = baud;
err = ccSendCMD( lcl, cmd );
if( err ) goto closeHandle;
// Open the CAN port
cmd[0] = (CANCARD_CMD_OPENPORT<<16);
err = ccSendCMD( lcl, cmd );
if( err ) goto closeHandle;
return lcl;
closeHandle:
ccCloseFile( lcl );
freeLocals:
ccFreeLocals( lcl );
done:
if( *error ) *error = err;
return NULL;
}
FILE *SrchPth2(char *name, char *path, char *attrib)
{
FILE *rv = SrchPth3(name, path, attrib);
#ifdef PARSER_ONLY
rv = ccOpenFile(name, rv, attrib);
#endif
#ifdef MSDOS
char buf[256], *p;
if (rv != - 1)
return rv;
p = strrchr(name, '.');
if (!p)
p = name + strlen(name);
if (p - name < 9)
return rv;
strcpy(buf, name);
strcpy(buf + 6, "~1");
strcpy(buf + 8, p);
rv = SrchPth3(buf, path, attrib);
if (rv != - 1)
{
strcpy(name, buf);
return rv;
}
strcpy(buf, name);
strcpy(buf + 8, p);
rv = SrchPth3(name, path, attrib);
if (rv != - 1)
{
strcpy(name, buf);
return rv;
}
return - 1;
#else
return rv;
#endif
}
