/* -------------------------------------------------------
//
// 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 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;
}
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;
}
void __initTimers(void){
// Set Timer0 to the following:-
// Mode = TIMER_MODE_CTC_OCR
// Prescale = 1024
// Save the timer mode
timerGetData(&pgm_Timers[0])->mode = TIMER_MODE_CTC_OCR;
// Set the timer mode
// Mode TIMER_MODE_CTC_OCR is 2
// Assume current mode settings are all 0
if(2 & 1){
sbi(TCCR0A,WGM00);
}
if(2 & 2){
sbi(TCCR0A,WGM01);
}
if(2 & 4){
sbi(TCCR0B,WGM02);
}
// Top is stored in Compare A OCR
OCR0A = 250;
// Turn on the timer by setting prescaler
timerGetData(&pgm_Timers[0])->prescale_value = 1024;
TCCR0B |= 5;
// Set Timer1 to the following:-
// Mode = TIMER_MODE_PWM_FAST_ICR
// Prescale = 8
// Save the timer mode
timerGetData(&pgm_Timers[1])->mode = TIMER_MODE_PWM_FAST_ICR;
// Set the timer mode
// Mode TIMER_MODE_PWM_FAST_ICR is 14
// Assume current mode settings are all 0
if(14 & 1){
sbi(TCCR1A,WGM10);
}
if(14 & 2){
sbi(TCCR1A,WGM11);
}
if(14 & 4){
sbi(TCCR1B,WGM12);
}
if(14 & 8){
sbi(TCCR1B,WGM13);
}
// Top is stored in ICR register
ICR1 = 40000;
// Turn on the timer by setting prescaler
timerGetData(&pgm_Timers[1])->prescale_value = 8;
TCCR1B |= 2;
// Set Timer3 to the following:-
// Mode = TIMER_MODE_PWM_FAST_ICR
// Prescale = 8
// Save the timer mode
timerGetData(&pgm_Timers[3])->mode = TIMER_MODE_PWM_FAST_ICR;
// Set the timer mode
// Mode TIMER_MODE_PWM_FAST_ICR is 14
// Assume current mode settings are all 0
if(14 & 1){
sbi(TCCR3A,WGM30);
}
if(14 & 2){
sbi(TCCR3A,WGM31);
}
if(14 & 4){
sbi(TCCR3B,WGM32);
}
if(14 & 8){
sbi(TCCR3B,WGM33);
}
// Top is stored in ICR register
ICR3 = 40000;
// Turn on the timer by setting prescaler
timerGetData(&pgm_Timers[3])->prescale_value = 8;
TCCR3B |= 2;
// Set Timer4 to the following:-
// Mode = TIMER_MODE_PWM_FAST_ICR
// Prescale = 8
// Save the timer mode
timerGetData(&pgm_Timers[4])->mode = TIMER_MODE_PWM_FAST_ICR;
// Set the timer mode
// Mode TIMER_MODE_PWM_FAST_ICR is 14
// Assume current mode settings are all 0
if(14 & 1){
sbi(TCCR4A,WGM40);
}
if(14 & 2){
sbi(TCCR4A,WGM41);
}
if(14 & 4){
sbi(TCCR4B,WGM42);
}
if(14 & 8){
sbi(TCCR4B,WGM43);
}
// Top is stored in ICR register
ICR4 = 40000;
// Turn on the timer by setting prescaler
timerGetData(&pgm_Timers[4])->prescale_value = 8;
TCCR4B |= 2;
// Set Timer5 to the following:-
// Mode = TIMER_MODE_PWM_FAST_ICR
// Prescale = 8
// Save the timer mode
timerGetData(&pgm_Timers[5])->mode = TIMER_MODE_PWM_FAST_ICR;
// Set the timer mode
// Mode TIMER_MODE_PWM_FAST_ICR is 14
// Assume current mode settings are all 0
if(14 & 1){
sbi(TCCR5A,WGM50);
}
if(14 & 2){
sbi(TCCR5A,WGM51);
}
if(14 & 4){
sbi(TCCR5B,WGM52);
}
if(14 & 8){
sbi(TCCR5B,WGM53);
}
// Top is stored in ICR register
ICR5 = 40000;
// Turn on the timer by setting prescaler
timerGetData(&pgm_Timers[5])->prescale_value = 8;
TCCR5B |= 2;
}
void __initTimers(void){
// Set Timer4 to the following:-
// Mode = TIMER_MODE_PWM_FAST_ICR
// Prescale = 8
// Save the timer mode
timerGetData(&pgm_Timers[4])->mode = TIMER_MODE_PWM_FAST_ICR;
// Set the timer mode
// Mode TIMER_MODE_PWM_FAST_ICR is 14
// Assume current mode settings are all 0
if(14 & 1){
sbi(TCCR4A,WGM40);
}
if(14 & 2){
sbi(TCCR4A,WGM41);
}
if(14 & 4){
sbi(TCCR4B,WGM42);
}
if(14 & 8){
sbi(TCCR4B,WGM43);
}
// Top is stored in ICR register
ICR4 = 40000;
// Turn on the timer by setting prescaler
timerGetData(&pgm_Timers[4])->prescale_value = 8;
TCCR4B |= 2;
// Set Timer5 to the following:-
// Mode = TIMER_MODE_CTC_OCR
// Prescale = 8
// Save the timer mode
timerGetData(&pgm_Timers[5])->mode = TIMER_MODE_CTC_OCR;
// Set the timer mode
// Mode TIMER_MODE_CTC_OCR is 4
// Assume current mode settings are all 0
if(4 & 1){
sbi(TCCR5A,WGM50);
}
if(4 & 2){
sbi(TCCR5A,WGM51);
}
if(4 & 4){
sbi(TCCR5B,WGM52);
}
if(4 & 8){
sbi(TCCR5B,WGM53);
}
// Top is stored in Compare A OCR
OCR5A = 64000;
// Turn on the timer by setting prescaler
timerGetData(&pgm_Timers[5])->prescale_value = 8;
TCCR5B |= 2;
}
