CooCox CoOS User's Guide

6.7.6 isr_PostSem()
Function Prototype:
StatusType isr_PostSem(OS_EventID id)
Descriptions:
To release semaphore resources whose ID was designated in the interrupt
service program.
Parameters:
[IN] id
the designated semaphore ID
Returns:
E_SEV_REQ_FULL interrupt service requests is full
E_INVALID_ID the semaphore ID that was incomed is invalid
E_SEM_FULL the designated semaphore ID has been reached it
maximal value
E_OK
release a semaphore resource successfully
Example usage:
#include "CCRTOS.h"
OS_EventID semaphore;
void XXX_IRQHandler(void)
{
StatusType result;
EnterISR();
// Enter ISR
...
/* Post a semaphore */
result = isr_PostSem (seamaphore);
if (result != E_OK) {
if (result == E_SEV_REQ_FULL) {
printf("Service requst queue is full !\n");
}
}
...
ExitISR();
// Exit ISR
}
Note:
Interrupt service routine can not call CoPostSem () to release the
semaphore resources ,otherwise the system will lead to confusion.
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