122 lines
4.4 KiB
C
122 lines
4.4 KiB
C
/**
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* Marlin 3D Printer Firmware
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* Copyright (c) 2019 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
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*
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* Based on Sprinter and grbl.
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* Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#pragma once
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#include <stdint.h>
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#include "driver/timer.h"
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// Includes needed to get I2S_STEPPER_STREAM. Note that pins.h
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// is included in case this header is being included early.
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#include "../../inc/MarlinConfig.h"
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#include "../../pins/pins.h"
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// ------------------------
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// Defines
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// ------------------------
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//
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#define FORCE_INLINE __attribute__((always_inline)) inline
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typedef uint64_t hal_timer_t;
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#define HAL_TIMER_TYPE_MAX 0xFFFFFFFFFFFFFFFFULL
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#define STEP_TIMER_NUM 0 // index of timer to use for stepper
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#define TEMP_TIMER_NUM 1 // index of timer to use for temperature
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#define PWM_TIMER_NUM 2 // index of timer to use for PWM outputs
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#define PULSE_TIMER_NUM STEP_TIMER_NUM
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#define HAL_TIMER_RATE APB_CLK_FREQ // frequency of timer peripherals
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#if ENABLED(I2S_STEPPER_STREAM)
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#define STEPPER_TIMER_PRESCALE 1
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#define STEPPER_TIMER_RATE 250000 // 250khz, 4us pulses of i2s word clock
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#define STEPPER_TIMER_TICKS_PER_US ((STEPPER_TIMER_RATE) / 1000000) // stepper timer ticks per µs // wrong would be 0.25
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#else
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#define STEPPER_TIMER_PRESCALE 40
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#define STEPPER_TIMER_RATE (HAL_TIMER_RATE / STEPPER_TIMER_PRESCALE) // frequency of stepper timer, 2MHz
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#define STEPPER_TIMER_TICKS_PER_US ((STEPPER_TIMER_RATE) / 1000000) // stepper timer ticks per µs
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#endif
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#define STEP_TIMER_MIN_INTERVAL 8 // minimum time in µs between stepper interrupts
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#define TEMP_TIMER_PRESCALE 1000 // prescaler for setting Temp timer, 72Khz
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#define TEMP_TIMER_FREQUENCY 1000 // temperature interrupt frequency
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#define PWM_TIMER_PRESCALE 10
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#if ENABLED(FAST_PWM_FAN)
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#define PWM_TIMER_FREQUENCY FAST_PWM_FAN_FREQUENCY
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#else
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#define PWM_TIMER_FREQUENCY (50*128) // 50Hz and 7bit resolution
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#endif
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#define MAX_PWM_PINS 32 // Number of PWM pin-slots
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#define PULSE_TIMER_RATE STEPPER_TIMER_RATE // frequency of pulse timer
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#define PULSE_TIMER_PRESCALE STEPPER_TIMER_PRESCALE
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#define PULSE_TIMER_TICKS_PER_US STEPPER_TIMER_TICKS_PER_US
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#define ENABLE_STEPPER_DRIVER_INTERRUPT() HAL_timer_enable_interrupt(STEP_TIMER_NUM)
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#define DISABLE_STEPPER_DRIVER_INTERRUPT() HAL_timer_disable_interrupt(STEP_TIMER_NUM)
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#define STEPPER_ISR_ENABLED() HAL_timer_interrupt_enabled(STEP_TIMER_NUM)
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#define ENABLE_TEMPERATURE_INTERRUPT() HAL_timer_enable_interrupt(TEMP_TIMER_NUM)
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#define DISABLE_TEMPERATURE_INTERRUPT() HAL_timer_disable_interrupt(TEMP_TIMER_NUM)
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#define HAL_TEMP_TIMER_ISR() extern "C" void tempTC_Handler()
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#define HAL_STEP_TIMER_ISR() extern "C" void stepTC_Handler()
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#define HAL_PWM_TIMER_ISR() extern "C" void pwmTC_Handler()
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extern "C" void tempTC_Handler();
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extern "C" void stepTC_Handler();
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extern "C" void pwmTC_Handler();
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// ------------------------
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// Types
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// ------------------------
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typedef struct {
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timer_group_t group;
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timer_idx_t idx;
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uint32_t divider;
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void (*fn)();
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} tTimerConfig;
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// ------------------------
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// Public Variables
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// ------------------------
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extern const tTimerConfig TimerConfig[];
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// ------------------------
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// Public functions
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// ------------------------
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void HAL_timer_start (const uint8_t timer_num, uint32_t frequency);
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void HAL_timer_set_compare(const uint8_t timer_num, const hal_timer_t count);
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hal_timer_t HAL_timer_get_compare(const uint8_t timer_num);
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hal_timer_t HAL_timer_get_count(const uint8_t timer_num);
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void HAL_timer_enable_interrupt(const uint8_t timer_num);
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void HAL_timer_disable_interrupt(const uint8_t timer_num);
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bool HAL_timer_interrupt_enabled(const uint8_t timer_num);
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#define HAL_timer_isr_prologue(TIMER_NUM)
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#define HAL_timer_isr_epilogue(TIMER_NUM)
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