123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133 |
- /**
- * Marlin 3D Printer Firmware
- *
- * Copyright (c) 2019 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
- * Copyright (c) 2016 Bob Cousins bobcousins42@googlemail.com
- * Copyright (c) 2015-2016 Nico Tonnhofer wurstnase.reprap@gmail.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 <http://www.gnu.org/licenses/>.
- *
- */
-
- #if defined(STM32GENERIC) && defined(STM32F4)
-
- #include "../HAL.h"
- #include "HAL_timers_STM32F4.h"
-
- // ------------------------
- // Local defines
- // ------------------------
-
- #define NUM_HARDWARE_TIMERS 2
- #define STEP_TIMER_IRQ_ID TIM5_IRQn
- #define TEMP_TIMER_IRQ_ID TIM7_IRQn
-
- // ------------------------
- // Private Variables
- // ------------------------
-
- stm32_timer_t TimerHandle[NUM_HARDWARE_TIMERS];
-
- // ------------------------
- // Public functions
- // ------------------------
-
- bool timers_initialized[NUM_HARDWARE_TIMERS] = {false};
-
- void HAL_timer_start(const uint8_t timer_num, const uint32_t frequency) {
-
- if (!timers_initialized[timer_num]) {
- constexpr uint32_t step_prescaler = STEPPER_TIMER_PRESCALE - 1,
- temp_prescaler = TEMP_TIMER_PRESCALE - 1;
- switch (timer_num) {
- case STEP_TIMER_NUM:
- // STEPPER TIMER TIM5 - use a 32bit timer
- #ifdef STM32GENERIC
- __HAL_RCC_TIM5_CLK_ENABLE();
- TimerHandle[timer_num].handle.Instance = TIM5;
- TimerHandle[timer_num].handle.Init.Prescaler = step_prescaler;
- TimerHandle[timer_num].handle.Init.CounterMode = TIM_COUNTERMODE_UP;
- TimerHandle[timer_num].handle.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;
- TimerHandle[timer_num].callback = (uint32_t)TC5_Handler;
- #else
- TimerHandle[timer_num].timer = TIM5;
- TimerHandle[timer_num].irqHandle = TC5_Handler;
- TimerHandleInit(&TimerHandle[timer_num], (((HAL_TIMER_RATE) / step_prescaler) / frequency) - 1, step_prescaler);
- #endif
- HAL_NVIC_SetPriority(STEP_TIMER_IRQ_ID, 1, 0);
- break;
-
- case TEMP_TIMER_NUM:
- // TEMP TIMER TIM7 - any available 16bit Timer (1 already used for PWM)
- #ifdef STM32GENERIC
- __HAL_RCC_TIM7_CLK_ENABLE();
- TimerHandle[timer_num].handle.Instance = TIM7;
- TimerHandle[timer_num].handle.Init.Prescaler = temp_prescaler;
- TimerHandle[timer_num].handle.Init.CounterMode = TIM_COUNTERMODE_UP;
- TimerHandle[timer_num].handle.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;
- TimerHandle[timer_num].callback = (uint32_t)TC7_Handler;
- #else
- TimerHandle[timer_num].timer = TIM7;
- TimerHandle[timer_num].irqHandle = TC7_Handler;
- TimerHandleInit(&TimerHandle[timer_num], (((HAL_TIMER_RATE) / temp_prescaler) / frequency) - 1, temp_prescaler);
- #endif
- HAL_NVIC_SetPriority(TEMP_TIMER_IRQ_ID, 2, 0);
- break;
- }
- timers_initialized[timer_num] = true;
- }
-
- #ifdef STM32GENERIC
- TimerHandle[timer_num].handle.Init.Period = (((HAL_TIMER_RATE) / TimerHandle[timer_num].handle.Init.Prescaler) / frequency) - 1;
- if (HAL_TIM_Base_Init(&TimerHandle[timer_num].handle) == HAL_OK)
- HAL_TIM_Base_Start_IT(&TimerHandle[timer_num].handle);
- #endif
- }
-
- #ifdef STM32GENERIC
- extern "C" void TIM5_IRQHandler() {
- ((void(*)(void))TimerHandle[0].callback)();
- }
- extern "C" void TIM7_IRQHandler() {
- ((void(*)(void))TimerHandle[1].callback)();
- }
- #endif
-
- void HAL_timer_enable_interrupt(const uint8_t timer_num) {
- switch (timer_num) {
- case STEP_TIMER_NUM: HAL_NVIC_EnableIRQ(STEP_TIMER_IRQ_ID); break;
- case TEMP_TIMER_NUM: HAL_NVIC_EnableIRQ(TEMP_TIMER_IRQ_ID); break;
- }
- }
-
- void HAL_timer_disable_interrupt(const uint8_t timer_num) {
- switch (timer_num) {
- case STEP_TIMER_NUM: HAL_NVIC_DisableIRQ(STEP_TIMER_IRQ_ID); break;
- case TEMP_TIMER_NUM: HAL_NVIC_DisableIRQ(TEMP_TIMER_IRQ_ID); break;
- }
- // We NEED memory barriers to ensure Interrupts are actually disabled!
- // ( https://dzone.com/articles/nvic-disabling-interrupts-on-arm-cortex-m-and-the )
- __DSB();
- __ISB();
- }
-
- bool HAL_timer_interrupt_enabled(const uint8_t timer_num) {
- switch (timer_num) {
- case STEP_TIMER_NUM: return NVIC->ISER[(uint32_t)((int32_t)STEP_TIMER_IRQ_ID) >> 5] & (uint32_t)(1 << ((uint32_t)((int32_t)STEP_TIMER_IRQ_ID) & (uint32_t)0x1F));
- case TEMP_TIMER_NUM: return NVIC->ISER[(uint32_t)((int32_t)TEMP_TIMER_IRQ_ID) >> 5] & (uint32_t)(1 << ((uint32_t)((int32_t)TEMP_TIMER_IRQ_ID) & (uint32_t)0x1F));
- }
- return false;
- }
-
- #endif // STM32GENERIC && STM32F4
|