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is a pointer to a variable that will contain an error code returned by this function.
OS_ERR_NONE
if the call was successful and the signal counter was cleared.
OS_ERR_SET_ISR
if OS_CFG_CALLED_FROM_ISR_CHK_EN set to 1 in os_cfg.h: if calling this function from an ISR
Returned Value
The value of the signal counter prior to setting it.
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