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Diffstat (limited to 'Marlin/src/HAL/SAMD51/timers.h')
| -rw-r--r-- | Marlin/src/HAL/SAMD51/timers.h | 143 |
1 files changed, 143 insertions, 0 deletions
diff --git a/Marlin/src/HAL/SAMD51/timers.h b/Marlin/src/HAL/SAMD51/timers.h new file mode 100644 index 0000000..dc6e38b --- /dev/null +++ b/Marlin/src/HAL/SAMD51/timers.h @@ -0,0 +1,143 @@ +/** + * Marlin 3D Printer Firmware + * + * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin] + * SAMD51 HAL developed by Giuliano Zaro (AKA GMagician) + * + * 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/>. + * + */ +#pragma once + +#include <stdint.h> + +// -------------------------------------------------------------------------- +// Defines +// -------------------------------------------------------------------------- +#define RTC_TIMER_NUM 8 // This is not a TC but a RTC + +typedef uint32_t hal_timer_t; +#define HAL_TIMER_TYPE_MAX 0xFFFFFFFF + +#define HAL_TIMER_RATE F_CPU // frequency of timers peripherals + +#ifndef STEP_TIMER_NUM + #define STEP_TIMER_NUM 0 // Timer Index for Stepper +#endif +#ifndef PULSE_TIMER_NUM + #define PULSE_TIMER_NUM STEP_TIMER_NUM +#endif +#ifndef TEMP_TIMER_NUM + #define TEMP_TIMER_NUM RTC_TIMER_NUM // Timer Index for Temperature +#endif + +#define TEMP_TIMER_FREQUENCY 1000 // temperature interrupt frequency + +#define STEPPER_TIMER_RATE HAL_TIMER_RATE // frequency of stepper timer (HAL_TIMER_RATE / STEPPER_TIMER_PRESCALE) +#define STEPPER_TIMER_TICKS_PER_US (STEPPER_TIMER_RATE / 1000000) // stepper timer ticks per µs +#define STEPPER_TIMER_PRESCALE (CYCLES_PER_MICROSECOND / STEPPER_TIMER_TICKS_PER_US) + +#define PULSE_TIMER_RATE STEPPER_TIMER_RATE +#define PULSE_TIMER_PRESCALE STEPPER_TIMER_PRESCALE +#define PULSE_TIMER_TICKS_PER_US STEPPER_TIMER_TICKS_PER_US + +#define ENABLE_STEPPER_DRIVER_INTERRUPT() HAL_timer_enable_interrupt(STEP_TIMER_NUM) +#define DISABLE_STEPPER_DRIVER_INTERRUPT() HAL_timer_disable_interrupt(STEP_TIMER_NUM) +#define STEPPER_ISR_ENABLED() HAL_timer_interrupt_enabled(STEP_TIMER_NUM) + +#define ENABLE_TEMPERATURE_INTERRUPT() HAL_timer_enable_interrupt(TEMP_TIMER_NUM) +#define DISABLE_TEMPERATURE_INTERRUPT() HAL_timer_disable_interrupt(TEMP_TIMER_NUM) + +#define TC_PRIORITY(t) t == SERVO_TC ? 1 \ + : (t == STEP_TIMER_NUM || t == PULSE_TIMER_NUM) ? 2 \ + : (t == TEMP_TIMER_NUM) ? 6 \ + : 7 + +#define _TC_HANDLER(t) void TC##t##_Handler() +#define TC_HANDLER(t) _TC_HANDLER(t) +#ifndef HAL_STEP_TIMER_ISR + #define HAL_STEP_TIMER_ISR() TC_HANDLER(STEP_TIMER_NUM) +#endif +#if STEP_TIMER_NUM != PULSE_TIMER_NUM + #define HAL_PULSE_TIMER_ISR() TC_HANDLER(PULSE_TIMER_NUM) +#endif +#if TEMP_TIMER_NUM == RTC_TIMER_NUM + #define HAL_TEMP_TIMER_ISR() void RTC_Handler() +#else + #define HAL_TEMP_TIMER_ISR() TC_HANDLER(TEMP_TIMER_NUM) +#endif + +// -------------------------------------------------------------------------- +// Types +// -------------------------------------------------------------------------- + +typedef struct { + union { + Tc *pTc; + Rtc *pRtc; + }; + IRQn_Type IRQ_Id; + uint8_t priority; +} tTimerConfig; + +// -------------------------------------------------------------------------- +// Public Variables +// -------------------------------------------------------------------------- + +extern const tTimerConfig TimerConfig[]; + +// -------------------------------------------------------------------------- +// Public functions +// -------------------------------------------------------------------------- + +void HAL_timer_start(const uint8_t timer_num, const uint32_t frequency); + +FORCE_INLINE static void HAL_timer_set_compare(const uint8_t timer_num, const hal_timer_t compare) { + // Should never be called with timer RTC_TIMER_NUM + Tc * const tc = TimerConfig[timer_num].pTc; + tc->COUNT32.CC[0].reg = compare; +} + +FORCE_INLINE static hal_timer_t HAL_timer_get_compare(const uint8_t timer_num) { + // Should never be called with timer RTC_TIMER_NUM + Tc * const tc = TimerConfig[timer_num].pTc; + return (hal_timer_t)tc->COUNT32.CC[0].reg; +} + +FORCE_INLINE static hal_timer_t HAL_timer_get_count(const uint8_t timer_num) { + // Should never be called with timer RTC_TIMER_NUM + Tc * const tc = TimerConfig[timer_num].pTc; + tc->COUNT32.CTRLBSET.reg = TC_CTRLBCLR_CMD_READSYNC; + SYNC(tc->COUNT32.SYNCBUSY.bit.CTRLB || tc->COUNT32.SYNCBUSY.bit.COUNT); + return tc->COUNT32.COUNT.reg; +} + +void HAL_timer_enable_interrupt(const uint8_t timer_num); +void HAL_timer_disable_interrupt(const uint8_t timer_num); +bool HAL_timer_interrupt_enabled(const uint8_t timer_num); + +FORCE_INLINE static void HAL_timer_isr_prologue(const uint8_t timer_num) { + if (timer_num == RTC_TIMER_NUM) { + Rtc * const rtc = TimerConfig[timer_num].pRtc; + // Clear interrupt flag + rtc->MODE0.INTFLAG.reg = RTC_MODE0_INTFLAG_CMP0; + } + else { + Tc * const tc = TimerConfig[timer_num].pTc; + // Clear interrupt flag + tc->COUNT32.INTFLAG.reg = TC_INTFLAG_OVF; + } +} + +#define HAL_timer_isr_epilogue(timer_num) |