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OSA : OS_Smsg_Wait_TO

OS_Smsg_Wait_TO (smsg, os_smsg_type_var, timeout)

Allowed only in task

Same as OS_Smsg_Wait. If timeout expires before message received, then stop waiting with Timeout flag set (see OS_IsTimeout)

Call allowed:

Only in task


smsg Simple message descriptor. Variable of OST_SMSG type
os_smsg_type_var Variable of OST_SMSG type, where simple message will be placed
timeout Time of waiting in system ticks - calling OS_Timer periods


timeout If timeout expired then system service OS_IsTimeout will return true


OST_SMSG smsg;
void Task (void)
    OST_SMSG  mysmsg;
    for (;;) {
        OS_Smsg_Wait_TO (smsg, mysmsg, 30);   // Wait 30 ticks for simple message
        if (!OS_IsTimeout()) {
            // Message has been received and stored into mysmsg

Old style name


See also

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