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OSA : OS_Squeue_Send_TO

OS_Squeue_Send_TO (squeue, smessage, timeout)

Allowed only in taskSwitches contextUses timer

Same as OS_Squeue_Send with exit if timeout expires.

OS_ENABLE_SQUEUE constant must be defined in OSAcfg.h.

For PIC16, message queues can be allocated only in bank0 or bank1

Call allowed:

Only in task


squeue Queue of simple messages descriptor. Variable of OST_SQUEUE type.
smessage Message body (OST_SMSG)
timeout Time of waiting in system ticks - calling OS_Timer periods


timeout If timeout expired then system service OS_IsTimeout will return true


OST_SQUEUE squeue;
void Task (void)
    for (;;) {
        OS_Squeue_Send_TO (squeue, 'E', 10);   // Wait 10 ticks for free space
        if (OS_IsTimeout()) {
            // Message was not sent!

Old style name


See also

en/osa/ref/allservices/os_squeue_send_to.txt · Last modified: 07.10.2010 13:57 (external edit)
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