CooCox CoOS User's Guide

Example usage:
Note:
#include "CCRTOS.h"
OS_EventID semaphore;;
void TaskN (void *pdata)
{
}
StatusType result;
...
/* Accept a semaphore without waitting */
result = CoAcceptSem (semaphore);
if (result != E_OK)
{
}
{
{
else
{
}
if (result == E_INVALID_ID)
}
printf("Invalid event ID !\n");
else if (result == E_SEM_EMPTY)
}
...
…
printf("No semaphore exist !\n");
/* Process semaphore here */
…
1) Running AcceptSem() program is an incomplete P operation. There are
some difference between them,when the number of the resources is
0,complete P operation will wait until other task release the
corresponding resource or finished for timeout,but this program will
return error immediately.
2) The number of the semaphore resources substract 1 after getting the
resources successfully.
6.7.4 CoPendSem()
Function Prototype:
StatusType CoPendSem(
OS_EventID id,
U32
timeout
);
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