void timerCaptureAttach(const Timer* timer, TimerCallback callback, void* user_data, boolean risingEdge )
{
TimerData* data = timerGetData(timer);
if(data->capture_callback != null){
setError(TIMER_CAPTURE_CALLBACK_EXISTS);
}
// Turn off interrupts whilst changing
// in case an interrupt happens half way through
CRITICAL_SECTION_START;
// Set callback
data->capture_callback = callback;
data->capture_data = user_data;
// Set the rising falling edge
if(risingEdge){
__portMaskSet(&timer->pgm_captureedge);
}else{
__portMaskClear(&timer->pgm_captureedge);
}
// Clear any pending capture interrupt flag
timerCaptureClearInterruptPending(timer);
// enable interrupt
__portMaskSet(&timer->pgm_captureint);
CRITICAL_SECTION_END;
}
/* -------------------------------------------------------
//
// Attach a callback function to a timer when it overflows
//
// This function is called during an interrupt so should
// be quick.
//
------------------------------------------------------- */
void timerOverflowAttach(const Timer* timer, TimerCallback callback, void* user_data )
{
// Turn off interrupts whilst changing
// in case an interrupt happens half way through
CRITICAL_SECTION_START;
if(callback!=null && timerGetData(timer)->overflow_callback != null){
setError(TIMER_OVERFLOW_CALLBACK_EXISTS);
}
// Set callback
TimerData* data = timerGetData(timer);
data->overflow_callback = callback;
data->overflow_data = user_data;
// enable interrupt if there is callback
if(callback!=null){
// enable overflow interrupts
__portMaskSet(&timer->pgm_overflowint);
}else{
// Disable overflow interrupts
__portMaskClear(&timer->pgm_overflowint);
}
CRITICAL_SECTION_END;
}
void timerCaptureDetach(const Timer* timer){
TimerData* data = timerGetData(timer);
// stop interrupt
__portMaskClear(&timer->pgm_captureint);
// Clear any pending capture interrupt flag
timerCaptureClearInterruptPending(timer);
// Set callback
data->capture_callback = null;
}
