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Diffstat (limited to 'Marlin/src/HAL/DUE/timers.h')
| -rw-r--r-- | Marlin/src/HAL/DUE/timers.h | 128 |
1 files changed, 128 insertions, 0 deletions
diff --git a/Marlin/src/HAL/DUE/timers.h b/Marlin/src/HAL/DUE/timers.h new file mode 100644 index 0000000..0e1ea07 --- /dev/null +++ b/Marlin/src/HAL/DUE/timers.h @@ -0,0 +1,128 @@ +/** + * Marlin 3D Printer Firmware + * + * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin] + * Copyright (c) 2016 Bob Cousins bobcousins42@googlemail.com + * + * 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 + +/** + * HAL Timers for Arduino Due and compatible (SAM3X8E) + */ + +#include <stdint.h> + +// ------------------------ +// Defines +// ------------------------ + +#define FORCE_INLINE __attribute__((always_inline)) inline + +typedef uint32_t hal_timer_t; +#define HAL_TIMER_TYPE_MAX 0xFFFFFFFF + +#define HAL_TIMER_RATE ((F_CPU) / 2) // frequency of timers peripherals + +#ifndef STEP_TIMER_NUM + #define STEP_TIMER_NUM 2 // 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 4 // Timer Index for Temperature +#endif +#ifndef TONE_TIMER_NUM + #define TONE_TIMER_NUM 6 // index of timer to use for beeper tones +#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 // frequency of pulse timer +#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) + +#ifndef HAL_STEP_TIMER_ISR + #define HAL_STEP_TIMER_ISR() void TC2_Handler() +#endif +#ifndef HAL_TEMP_TIMER_ISR + #define HAL_TEMP_TIMER_ISR() void TC4_Handler() +#endif +#ifndef HAL_TONE_TIMER_ISR + #define HAL_TONE_TIMER_ISR() void TC6_Handler() +#endif + +// ------------------------ +// Types +// ------------------------ + +typedef struct { + Tc *pTimerRegs; + uint16_t channel; + 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) { + const tTimerConfig * const pConfig = &TimerConfig[timer_num]; + pConfig->pTimerRegs->TC_CHANNEL[pConfig->channel].TC_RC = compare; +} + +FORCE_INLINE static hal_timer_t HAL_timer_get_compare(const uint8_t timer_num) { + const tTimerConfig * const pConfig = &TimerConfig[timer_num]; + return pConfig->pTimerRegs->TC_CHANNEL[pConfig->channel].TC_RC; +} + +FORCE_INLINE static hal_timer_t HAL_timer_get_count(const uint8_t timer_num) { + const tTimerConfig * const pConfig = &TimerConfig[timer_num]; + return pConfig->pTimerRegs->TC_CHANNEL[pConfig->channel].TC_CV; +} + +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) { + const tTimerConfig * const pConfig = &TimerConfig[timer_num]; + // Reading the status register clears the interrupt flag + pConfig->pTimerRegs->TC_CHANNEL[pConfig->channel].TC_SR; +} + +#define HAL_timer_isr_epilogue(TIMER_NUM) |