140 lines
5.3 KiB
C
140 lines
5.3 KiB
C
/**
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* Marlin 3D Printer Firmware
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*
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* Copyright (C) 2016 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
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* Copyright (c) 2016 Bob Cousins bobcousins42@googlemail.com
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* Copyright (c) 2017 Victor Perez
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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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#ifndef _HAL_TIMERS_STM32F4_H
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#define _HAL_TIMERS_STM32F4_H
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// --------------------------------------------------------------------------
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// Includes
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// --------------------------------------------------------------------------
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#include <stdint.h>
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// --------------------------------------------------------------------------
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// Defines
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// --------------------------------------------------------------------------
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#define FORCE_INLINE __attribute__((always_inline)) inline
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#define hal_timer_t uint32_t // TODO: One is 16-bit, one 32-bit - does this need to be checked?
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#define HAL_TIMER_TYPE_MAX 0xFFFF
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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 HAL_TIMER_RATE (HAL_RCC_GetSysClockFreq() / 2) // frequency of timer peripherals
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#define STEPPER_TIMER_PRESCALE 54 // was 40,prescaler for setting stepper timer, 2Mhz
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#define STEPPER_TIMER_RATE (HAL_TIMER_RATE / STEPPER_TIMER_PRESCALE) // frequency of stepper timer
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#define HAL_TICKS_PER_US ((STEPPER_TIMER_RATE) / 1000000) // stepper timer ticks per µs
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#define PULSE_TIMER_NUM STEP_TIMER_NUM
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#define PULSE_TIMER_PRESCALE STEPPER_TIMER_PRESCALE
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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 STEP_TIMER_MIN_INTERVAL 8 // minimum time in µs between stepper interrupts
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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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// TODO change this
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#ifdef STM32GENERIC
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extern void TC5_Handler();
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extern void TC7_Handler();
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#define HAL_STEP_TIMER_ISR void TC5_Handler()
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#define HAL_TEMP_TIMER_ISR void TC7_Handler()
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#else
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extern void TC5_Handler(stimer_t *htim);
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extern void TC7_Handler(stimer_t *htim);
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#define HAL_STEP_TIMER_ISR void TC5_Handler(stimer_t *htim)
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#define HAL_TEMP_TIMER_ISR void TC7_Handler(stimer_t *htim)
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#endif
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// --------------------------------------------------------------------------
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// Types
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// --------------------------------------------------------------------------
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#ifdef STM32GENERIC
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typedef struct {
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TIM_HandleTypeDef handle;
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uint32_t callback;
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} tTimerConfig;
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typedef tTimerConfig stm32f4_timer_t;
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#else
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typedef stimer_t stm32f4_timer_t;
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#endif
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// --------------------------------------------------------------------------
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// Public Variables
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// --------------------------------------------------------------------------
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extern stm32f4_timer_t TimerHandle[];
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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, const uint32_t frequency);
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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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FORCE_INLINE static uint32_t HAL_timer_get_count(const uint8_t timer_num) {
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return __HAL_TIM_GET_COUNTER(&TimerHandle[timer_num].handle);
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}
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FORCE_INLINE static void HAL_timer_set_compare(const uint8_t timer_num, const uint32_t compare) {
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__HAL_TIM_SET_AUTORELOAD(&TimerHandle[timer_num].handle, compare);
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if (HAL_timer_get_count(timer_num) >= compare)
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TimerHandle[timer_num].handle.Instance->EGR |= TIM_EGR_UG; // Generate an immediate update interrupt
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}
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FORCE_INLINE static hal_timer_t HAL_timer_get_compare(const uint8_t timer_num) {
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return __HAL_TIM_GET_AUTORELOAD(&TimerHandle[timer_num].handle);
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}
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FORCE_INLINE static void HAL_timer_restrain(const uint8_t timer_num, const uint16_t interval_ticks) {
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const hal_timer_t mincmp = HAL_timer_get_count(timer_num) + interval_ticks;
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if (HAL_timer_get_compare(timer_num) < mincmp)
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HAL_timer_set_compare(timer_num, mincmp);
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}
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#ifdef STM32GENERIC
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FORCE_INLINE static void HAL_timer_isr_prologue(const uint8_t timer_num) {
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if (__HAL_TIM_GET_FLAG(&TimerHandle[timer_num].handle, TIM_FLAG_UPDATE) == SET)
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__HAL_TIM_CLEAR_FLAG(&TimerHandle[timer_num].handle, TIM_FLAG_UPDATE);
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}
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#else
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#define HAL_timer_isr_prologue(TIMER_NUM)
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#endif
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#define HAL_timer_isr_epilogue(TIMER_NUM)
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#endif // _HAL_TIMERS_STM32F4_H
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