CooCox CoOS User's Guide

6.8.6 isr_PostMail()
Function Prototype:
StatusType isr_PostMail(
OS_EventID id,
void* pmail
);
Descriptions:
To send message to a mailbox whose ID was designated in the interrupt
service program.
Parameters:
[IN] id
the designated mailbox ID
[IN] pmail
message pointer
Returns:
E_SEV_REQ_FULL, interrupt service requests is full
E_INVALID_ID, the semaphore ID that was incomed is invalid
E_MBOX_FULL, the mailbox has been full
E_OK,
send message to mailbox successfully
Example usage:
#include "CCRTOS.h"
OS_EventID mailbox;
int IsrDat;
void XXX_IRQHandler(void)
{
StatusType result;
EnterISR();
// Enter ISR
...
IsrDat = 0x90;
/* Post a mail to Mailbox that created by other tase */
result = isr_PostMail (mailbox, &IsrDat);
if (result != E_OK) {
if (result == E_SEV_REQ_FULL) {
printf("Service requst queue is full !\n");
}
}
...
ExitISR();
// Exit ISR
}
Note:
1)It is used in the interrupt service program.
2)Interrupt service routine can not call CoPostMail()to send mailbox
message ,otherwise the system will lead to confusion.
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