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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/>.
- *
- */
- #pragma once
-
- #include <stdint.h>
- #include <driver/timer.h>
-
- // Includes needed to get I2S_STEPPER_STREAM. Note that pins.h
- // is included in case this header is being included early.
- #include "../../inc/MarlinConfig.h"
- #include "../../pins/pins.h"
-
- // ------------------------
- // Defines
- // ------------------------
- //
- #define FORCE_INLINE __attribute__((always_inline)) inline
-
- typedef uint64_t hal_timer_t;
- #define HAL_TIMER_TYPE_MAX 0xFFFFFFFFFFFFFFFFULL
-
- #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 1 // Timer Index for Temperature
- #endif
- #ifndef PWM_TIMER_NUM
- #define PWM_TIMER_NUM 2 // index of timer to use for PWM outputs
- #endif
-
- #define HAL_TIMER_RATE APB_CLK_FREQ // frequency of timer peripherals
-
- #if ENABLED(I2S_STEPPER_STREAM)
- #define STEPPER_TIMER_PRESCALE 1
- #define STEPPER_TIMER_RATE 250000 // 250khz, 4µs pulses of i2s word clock
- #define STEPPER_TIMER_TICKS_PER_US ((STEPPER_TIMER_RATE) / 1000000) // stepper timer ticks per µs // wrong would be 0.25
- #else
- #define STEPPER_TIMER_PRESCALE 40
- #define STEPPER_TIMER_RATE ((HAL_TIMER_RATE) / (STEPPER_TIMER_PRESCALE)) // frequency of stepper timer, 2MHz
- #define STEPPER_TIMER_TICKS_PER_US ((STEPPER_TIMER_RATE) / 1000000) // stepper timer ticks per µs
- #endif
-
- #define STEP_TIMER_MIN_INTERVAL 8 // minimum time in µs between stepper interrupts
-
- #define TEMP_TIMER_PRESCALE 1000 // prescaler for setting Temp timer, 72Khz
- #define TEMP_TIMER_FREQUENCY 1000 // temperature interrupt frequency
-
- #define PWM_TIMER_PRESCALE 10
- #if ENABLED(FAST_PWM_FAN)
- #define PWM_TIMER_FREQUENCY FAST_PWM_FAN_FREQUENCY
- #else
- #define PWM_TIMER_FREQUENCY (50*128) // 50Hz and 7bit resolution
- #endif
- #define MAX_PWM_PINS 32 // Number of PWM pin-slots
-
- #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_TEMP_TIMER_ISR
- #define HAL_TEMP_TIMER_ISR() extern "C" void tempTC_Handler()
- #endif
- #ifndef HAL_STEP_TIMER_ISR
- #define HAL_STEP_TIMER_ISR() extern "C" void stepTC_Handler()
- #endif
- #ifndef HAL_PWM_TIMER_ISR
- #define HAL_PWM_TIMER_ISR() extern "C" void pwmTC_Handler()
- #endif
-
- extern "C" void tempTC_Handler();
- extern "C" void stepTC_Handler();
- extern "C" void pwmTC_Handler();
-
- // ------------------------
- // Types
- // ------------------------
-
- typedef struct {
- timer_group_t group;
- timer_idx_t idx;
- uint32_t divider;
- void (*fn)();
- } tTimerConfig;
-
- // ------------------------
- // Public Variables
- // ------------------------
-
- extern const tTimerConfig TimerConfig[];
-
- // ------------------------
- // Public functions
- // ------------------------
-
- void HAL_timer_start (const uint8_t timer_num, uint32_t frequency);
- void HAL_timer_set_compare(const uint8_t timer_num, const hal_timer_t count);
- hal_timer_t HAL_timer_get_compare(const uint8_t timer_num);
- hal_timer_t HAL_timer_get_count(const uint8_t timer_num);
-
- 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);
-
- #define HAL_timer_isr_prologue(TIMER_NUM)
- #define HAL_timer_isr_epilogue(TIMER_NUM)
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