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🧑💻 Misc. servo code cleanup
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@ -66,7 +66,7 @@ static volatile int8_t Channel[_Nbr_16timers]; // counter for the s
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/************ static functions common to all instances ***********************/
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static inline void handle_interrupts(timer16_Sequence_t timer, volatile uint16_t* TCNTn, volatile uint16_t* OCRnA) {
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static inline void handle_interrupts(const timer16_Sequence_t timer, volatile uint16_t* TCNTn, volatile uint16_t* OCRnA) {
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if (Channel[timer] < 0)
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*TCNTn = 0; // channel set to -1 indicated that refresh interval completed so reset the timer
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else {
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@ -52,7 +52,7 @@ static volatile int8_t Channel[_Nbr_16timers]; // counter for the s
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// ------------------------
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/// Interrupt handler for the TC0 channel 1.
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// ------------------------
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void Servo_Handler(timer16_Sequence_t timer, Tc *pTc, uint8_t channel);
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void Servo_Handler(const timer16_Sequence_t, Tc*, const uint8_t);
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#ifdef _useTimer1
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void HANDLER_FOR_TIMER1() { Servo_Handler(_timer1, TC_FOR_TIMER1, CHANNEL_FOR_TIMER1); }
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@ -70,7 +70,7 @@ void Servo_Handler(timer16_Sequence_t timer, Tc *pTc, uint8_t channel);
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void HANDLER_FOR_TIMER5() { Servo_Handler(_timer5, TC_FOR_TIMER5, CHANNEL_FOR_TIMER5); }
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#endif
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void Servo_Handler(timer16_Sequence_t timer, Tc *tc, uint8_t channel) {
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void Servo_Handler(const timer16_Sequence_t timer, Tc *tc, const uint8_t channel) {
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// clear interrupt
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tc->TC_CHANNEL[channel].TC_SR;
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if (Channel[timer] < 0)
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@ -113,26 +113,21 @@ static void _initISR(Tc *tc, uint32_t channel, uint32_t id, IRQn_Type irqn) {
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TC_Start(tc, channel);
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}
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void initISR(timer16_Sequence_t timer) {
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void initISR(const timer16_Sequence_t timer) {
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#ifdef _useTimer1
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if (timer == _timer1)
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_initISR(TC_FOR_TIMER1, CHANNEL_FOR_TIMER1, ID_TC_FOR_TIMER1, IRQn_FOR_TIMER1);
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if (timer == _timer1) _initISR(TC_FOR_TIMER1, CHANNEL_FOR_TIMER1, ID_TC_FOR_TIMER1, IRQn_FOR_TIMER1);
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#endif
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#ifdef _useTimer2
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if (timer == _timer2)
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_initISR(TC_FOR_TIMER2, CHANNEL_FOR_TIMER2, ID_TC_FOR_TIMER2, IRQn_FOR_TIMER2);
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if (timer == _timer2) _initISR(TC_FOR_TIMER2, CHANNEL_FOR_TIMER2, ID_TC_FOR_TIMER2, IRQn_FOR_TIMER2);
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#endif
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#ifdef _useTimer3
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if (timer == _timer3)
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_initISR(TC_FOR_TIMER3, CHANNEL_FOR_TIMER3, ID_TC_FOR_TIMER3, IRQn_FOR_TIMER3);
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if (timer == _timer3) _initISR(TC_FOR_TIMER3, CHANNEL_FOR_TIMER3, ID_TC_FOR_TIMER3, IRQn_FOR_TIMER3);
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#endif
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#ifdef _useTimer4
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if (timer == _timer4)
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_initISR(TC_FOR_TIMER4, CHANNEL_FOR_TIMER4, ID_TC_FOR_TIMER4, IRQn_FOR_TIMER4);
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if (timer == _timer4) _initISR(TC_FOR_TIMER4, CHANNEL_FOR_TIMER4, ID_TC_FOR_TIMER4, IRQn_FOR_TIMER4);
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#endif
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#ifdef _useTimer5
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if (timer == _timer5)
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_initISR(TC_FOR_TIMER5, CHANNEL_FOR_TIMER5, ID_TC_FOR_TIMER5, IRQn_FOR_TIMER5);
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if (timer == _timer5) _initISR(TC_FOR_TIMER5, CHANNEL_FOR_TIMER5, ID_TC_FOR_TIMER5, IRQn_FOR_TIMER5);
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#endif
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}
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@ -124,7 +124,7 @@ HAL_SERVO_TIMER_ISR() {
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}
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}
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void initISR(timer16_Sequence_t timer) {
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void initISR(const timer16_Sequence_t timer) {
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Tc * const tc = timer_config[SERVO_TC].pTc;
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const uint8_t tcChannel = TIMER_TCCHANNEL(timer);
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@ -201,7 +201,7 @@ void initISR(timer16_Sequence_t timer) {
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}
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}
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void finISR(timer16_Sequence_t timer) {
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void finISR(const timer16_Sequence_t timer) {
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Tc * const tc = timer_config[SERVO_TC].pTc;
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const uint8_t tcChannel = TIMER_TCCHANNEL(timer);
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@ -147,17 +147,17 @@ void libServo::move(const int32_t value) {
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uint16_t SR = timer_get_status(tdev);
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if (SR & TIMER_SR_CC1IF) { // channel 1 off
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#ifdef SERVO0_PWM_OD
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OUT_WRITE_OD(SERVO0_PIN, 1); // off
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OUT_WRITE_OD(SERVO0_PIN, HIGH); // off
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#else
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OUT_WRITE(SERVO0_PIN, 0);
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OUT_WRITE(SERVO0_PIN, LOW);
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#endif
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timer_reset_status_bit(tdev, TIMER_SR_CC1IF_BIT);
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}
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if (SR & TIMER_SR_CC2IF) { // channel 2 resume
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#ifdef SERVO0_PWM_OD
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OUT_WRITE_OD(SERVO0_PIN, 0); // on
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OUT_WRITE_OD(SERVO0_PIN, LOW); // on
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#else
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OUT_WRITE(SERVO0_PIN, 1);
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OUT_WRITE(SERVO0_PIN, HIGH);
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#endif
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timer_reset_status_bit(tdev, TIMER_SR_CC2IF_BIT);
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}
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@ -167,9 +167,9 @@ void libServo::move(const int32_t value) {
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timer_dev *tdev = HAL_get_timer_dev(MF_TIMER_SERVO0);
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if (!tdev) return false;
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#ifdef SERVO0_PWM_OD
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OUT_WRITE_OD(inPin, 1);
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OUT_WRITE_OD(inPin, HIGH);
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#else
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OUT_WRITE(inPin, 0);
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OUT_WRITE(inPin, LOW);
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#endif
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timer_pause(tdev);
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@ -200,9 +200,9 @@ void libServo::move(const int32_t value) {
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timer_disable_irq(tdev, 1);
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timer_disable_irq(tdev, 2);
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#ifdef SERVO0_PWM_OD
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OUT_WRITE_OD(pin, 1); // off
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OUT_WRITE_OD(pin, HIGH); // off
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#else
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OUT_WRITE(pin, 0);
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OUT_WRITE(pin, LOW);
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#endif
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}
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}
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@ -65,7 +65,7 @@ uint8_t ServoCount = 0; // the total number of attached
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/************ static functions common to all instances ***********************/
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static boolean isTimerActive(timer16_Sequence_t timer) {
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static bool anyTimerChannelActive(const timer16_Sequence_t timer) {
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// returns true if any servo is active on this timer
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LOOP_L_N(channel, SERVOS_PER_TIMER) {
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if (SERVO(timer, channel).Pin.isActive)
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@ -101,17 +101,18 @@ int8_t Servo::attach(const int inPin, const int inMin, const int inMax) {
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max = (MAX_PULSE_WIDTH - inMax) / 4;
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// initialize the timer if it has not already been initialized
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timer16_Sequence_t timer = SERVO_INDEX_TO_TIMER(servoIndex);
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if (!isTimerActive(timer)) initISR(timer);
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servo_info[servoIndex].Pin.isActive = true; // this must be set after the check for isTimerActive
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const timer16_Sequence_t timer = SERVO_INDEX_TO_TIMER(servoIndex);
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if (!anyTimerChannelActive(timer)) initISR(timer);
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servo_info[servoIndex].Pin.isActive = true; // this must be set after the check for anyTimerChannelActive
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return servoIndex;
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}
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void Servo::detach() {
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servo_info[servoIndex].Pin.isActive = false;
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timer16_Sequence_t timer = SERVO_INDEX_TO_TIMER(servoIndex);
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if (!isTimerActive(timer)) finISR(timer);
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const timer16_Sequence_t timer = SERVO_INDEX_TO_TIMER(servoIndex);
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if (!anyTimerChannelActive(timer)) finISR(timer);
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//pinMode(servo_info[servoIndex].Pin.nbr, INPUT); // set servo pin to input
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}
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void Servo::write(int value) {
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@ -70,10 +70,10 @@
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#define ticksToUs(_ticks) (unsigned(_ticks) * (SERVO_TIMER_PRESCALER) / clockCyclesPerMicrosecond())
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// convenience macros
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#define SERVO_INDEX_TO_TIMER(_servo_nbr) ((timer16_Sequence_t)(_servo_nbr / (SERVOS_PER_TIMER))) // returns the timer controlling this servo
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#define SERVO_INDEX_TO_CHANNEL(_servo_nbr) (_servo_nbr % (SERVOS_PER_TIMER)) // returns the index of the servo on this timer
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#define SERVO_INDEX(_timer,_channel) ((_timer*(SERVOS_PER_TIMER)) + _channel) // macro to access servo index by timer and channel
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#define SERVO(_timer,_channel) (servo_info[SERVO_INDEX(_timer,_channel)]) // macro to access servo class by timer and channel
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#define SERVO_INDEX_TO_TIMER(_servo_nbr) timer16_Sequence_t(_servo_nbr / (SERVOS_PER_TIMER)) // the timer controlling this servo
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#define SERVO_INDEX_TO_CHANNEL(_servo_nbr) (_servo_nbr % (SERVOS_PER_TIMER)) // the index of the servo on this timer
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#define SERVO_INDEX(_timer,_channel) ((_timer*(SERVOS_PER_TIMER)) + _channel) // servo index by timer and channel
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#define SERVO(_timer,_channel) servo_info[SERVO_INDEX(_timer,_channel)] // servo class by timer and channel
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// Types
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@ -94,5 +94,5 @@ extern ServoInfo_t servo_info[MAX_SERVOS];
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// Public functions
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extern void initISR(timer16_Sequence_t timer);
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extern void finISR(timer16_Sequence_t timer);
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extern void initISR(const timer16_Sequence_t timer);
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extern void finISR(const timer16_Sequence_t timer);
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