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authorGeorgiy Bondarenko <69736697+nehilo@users.noreply.github.com>2021-03-04 20:54:23 +0300
committerGeorgiy Bondarenko <69736697+nehilo@users.noreply.github.com>2021-03-04 20:54:23 +0300
commite8701195e66f2d27ffe17fb514eae8173795aaf7 (patch)
tree9f519c4abf6556b9ae7190a6210d87ead1dfadde /Marlin/src/HAL/DUE/Servo.cpp
downloadkp3s-lgvl-e8701195e66f2d27ffe17fb514eae8173795aaf7.tar.xz
kp3s-lgvl-e8701195e66f2d27ffe17fb514eae8173795aaf7.zip
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+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
+
+/*
+ Copyright (c) 2013 Arduino LLC. All right reserved.
+
+ This library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ This library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with this library; if not, write to the Free Software
+ Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+*/
+
+#ifdef ARDUINO_ARCH_SAM
+
+#include "../../inc/MarlinConfig.h"
+
+#if HAS_SERVOS
+
+#include "../shared/servo.h"
+#include "../shared/servo_private.h"
+
+static volatile int8_t Channel[_Nbr_16timers]; // counter for the servo being pulsed for each timer (or -1 if refresh interval)
+
+// ------------------------
+/// Interrupt handler for the TC0 channel 1.
+// ------------------------
+void Servo_Handler(timer16_Sequence_t timer, Tc *pTc, uint8_t channel);
+
+#ifdef _useTimer1
+ void HANDLER_FOR_TIMER1() { Servo_Handler(_timer1, TC_FOR_TIMER1, CHANNEL_FOR_TIMER1); }
+#endif
+#ifdef _useTimer2
+ void HANDLER_FOR_TIMER2() { Servo_Handler(_timer2, TC_FOR_TIMER2, CHANNEL_FOR_TIMER2); }
+#endif
+#ifdef _useTimer3
+ void HANDLER_FOR_TIMER3() { Servo_Handler(_timer3, TC_FOR_TIMER3, CHANNEL_FOR_TIMER3); }
+#endif
+#ifdef _useTimer4
+ void HANDLER_FOR_TIMER4() { Servo_Handler(_timer4, TC_FOR_TIMER4, CHANNEL_FOR_TIMER4); }
+#endif
+#ifdef _useTimer5
+ void HANDLER_FOR_TIMER5() { Servo_Handler(_timer5, TC_FOR_TIMER5, CHANNEL_FOR_TIMER5); }
+#endif
+
+void Servo_Handler(timer16_Sequence_t timer, Tc *tc, uint8_t channel) {
+ // clear interrupt
+ tc->TC_CHANNEL[channel].TC_SR;
+ if (Channel[timer] < 0)
+ tc->TC_CHANNEL[channel].TC_CCR |= TC_CCR_SWTRG; // channel set to -1 indicated that refresh interval completed so reset the timer
+ else if (SERVO_INDEX(timer, Channel[timer]) < ServoCount && SERVO(timer, Channel[timer]).Pin.isActive)
+ extDigitalWrite(SERVO(timer, Channel[timer]).Pin.nbr, LOW); // pulse this channel low if activated
+
+ Channel[timer]++; // increment to the next channel
+ if (SERVO_INDEX(timer, Channel[timer]) < ServoCount && Channel[timer] < SERVOS_PER_TIMER) {
+ tc->TC_CHANNEL[channel].TC_RA = tc->TC_CHANNEL[channel].TC_CV + SERVO(timer,Channel[timer]).ticks;
+ if (SERVO(timer,Channel[timer]).Pin.isActive) // check if activated
+ extDigitalWrite(SERVO(timer, Channel[timer]).Pin.nbr, HIGH); // its an active channel so pulse it high
+ }
+ else {
+ // finished all channels so wait for the refresh period to expire before starting over
+ tc->TC_CHANNEL[channel].TC_RA =
+ tc->TC_CHANNEL[channel].TC_CV < usToTicks(REFRESH_INTERVAL) - 4
+ ? (unsigned int)usToTicks(REFRESH_INTERVAL) // allow a few ticks to ensure the next OCR1A not missed
+ : tc->TC_CHANNEL[channel].TC_CV + 4; // at least REFRESH_INTERVAL has elapsed
+ Channel[timer] = -1; // this will get incremented at the end of the refresh period to start again at the first channel
+ }
+}
+
+static void _initISR(Tc *tc, uint32_t channel, uint32_t id, IRQn_Type irqn) {
+ pmc_enable_periph_clk(id);
+ TC_Configure(tc, channel,
+ TC_CMR_TCCLKS_TIMER_CLOCK3 | // MCK/32
+ TC_CMR_WAVE | // Waveform mode
+ TC_CMR_WAVSEL_UP_RC ); // Counter running up and reset when equals to RC
+
+ /* 84MHz, MCK/32, for 1.5ms: 3937 */
+ TC_SetRA(tc, channel, 2625); // 1ms
+
+ /* Configure and enable interrupt */
+ NVIC_EnableIRQ(irqn);
+ // TC_IER_CPAS: RA Compare
+ tc->TC_CHANNEL[channel].TC_IER = TC_IER_CPAS;
+
+ // Enables the timer clock and performs a software reset to start the counting
+ TC_Start(tc, channel);
+}
+
+void initISR(timer16_Sequence_t timer) {
+ #ifdef _useTimer1
+ if (timer == _timer1)
+ _initISR(TC_FOR_TIMER1, CHANNEL_FOR_TIMER1, ID_TC_FOR_TIMER1, IRQn_FOR_TIMER1);
+ #endif
+ #ifdef _useTimer2
+ if (timer == _timer2)
+ _initISR(TC_FOR_TIMER2, CHANNEL_FOR_TIMER2, ID_TC_FOR_TIMER2, IRQn_FOR_TIMER2);
+ #endif
+ #ifdef _useTimer3
+ if (timer == _timer3)
+ _initISR(TC_FOR_TIMER3, CHANNEL_FOR_TIMER3, ID_TC_FOR_TIMER3, IRQn_FOR_TIMER3);
+ #endif
+ #ifdef _useTimer4
+ if (timer == _timer4)
+ _initISR(TC_FOR_TIMER4, CHANNEL_FOR_TIMER4, ID_TC_FOR_TIMER4, IRQn_FOR_TIMER4);
+ #endif
+ #ifdef _useTimer5
+ if (timer == _timer5)
+ _initISR(TC_FOR_TIMER5, CHANNEL_FOR_TIMER5, ID_TC_FOR_TIMER5, IRQn_FOR_TIMER5);
+ #endif
+}
+
+void finISR(timer16_Sequence_t) {
+ #ifdef _useTimer1
+ TC_Stop(TC_FOR_TIMER1, CHANNEL_FOR_TIMER1);
+ #endif
+ #ifdef _useTimer2
+ TC_Stop(TC_FOR_TIMER2, CHANNEL_FOR_TIMER2);
+ #endif
+ #ifdef _useTimer3
+ TC_Stop(TC_FOR_TIMER3, CHANNEL_FOR_TIMER3);
+ #endif
+ #ifdef _useTimer4
+ TC_Stop(TC_FOR_TIMER4, CHANNEL_FOR_TIMER4);
+ #endif
+ #ifdef _useTimer5
+ TC_Stop(TC_FOR_TIMER5, CHANNEL_FOR_TIMER5);
+ #endif
+}
+
+#endif // HAS_SERVOS
+
+#endif // ARDUINO_ARCH_SAM