...
Files
os.h/os_task.c
Prototype
| Code Block |
|---|
OS_SEM_CTR OSTaskSemPend (OS_TICK timeout,
OS_OPT opt,
CPU_TS *p_ts,
OS_ERR *p_err) |
Arguments
timeout
allows the task to resume execution if a signal is not received from a task or an ISR within the specified number of clock ticks. A timeout value of 0 indicates that the task wants to wait forever for a signal. The timeout value is not synchronized with the clock tick. The timeout count starts decrementing on the next clock tick, which could potentially occur immediately.
...
- Do not call
OSTaskSemPend()from an ISR.
Example Usage
| Code Block |
|---|
void CommTask(void *p_arg)
{
OS_ERR err;
OS_SEM_CTR ctr;
CPU_TS ts;
(void)&p_arg;
while (DEF_ON) {
:
ctr = OSTaskSemPend(100,
OS_OPT_PEND_BLOCKING,
&ts,
&err);
/* Check "err" */
:
:
}
} |