pitr_sem.h

/*NB_REVISION*/
 
/*NB_COPYRIGHT*/
 
extern volatile uint32_t gPitCount[4];
 
/*-------------------------------------------------------------------
 * Initialize a PIT timer to interrupt the specified numbe of times
 * per second. Maximum is 20,000 providing 50us per tick.
 *
 * PARAMETERS
 * timer          Select PIT timer. Value can be 1 or 2.
 *                 0 is reserved for the rtos system clock,
 *                 3 is reserved for the debugger
 *
 * pit_per_sec    Number of interrupts per second
 *
 * RETURNS
 * 0  = success
 * -1 = invalid channel
 *------------------------------------------------------------------*/
 
// Posts a semaphore when timer expires
int InitPitOSSem(int timer, OS_SEM *p_toSem, int pit_per_sec);
 
// Sets a flag when timer expires
int InitPitOSFlag(int timer, OS_FLAGS *p_toFlag, uint32_t fv, int pit_per_sec);
 
// Calls a function when timer expires
int InitPitInterruptCallback(int timer, void (*p_toCallbackFunc)(), int pit_per_sec);
 
// Clear semaphore/flag/callback associated with a timer
void ClearTimerVariables(int timer);