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- /**
- * Marlin 3D Printer Firmware
- *
- * Copyright (c) 2020 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 <https://www.gnu.org/licenses/>.
- *
- */
- #if defined(STM32GENERIC) && defined(STM32F7)
-
- #include "../../../inc/MarlinConfig.h"
-
- // ------------------------
- // Local defines
- // ------------------------
-
- #define NUM_HARDWARE_TIMERS 2
-
- //#define PRESCALER 1
-
- // ------------------------
- // Private Variables
- // ------------------------
-
- tTimerConfig timerConfig[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]) {
- switch (timer_num) {
- case STEP_TIMER_NUM:
- //STEPPER TIMER TIM5 //use a 32bit timer
- __HAL_RCC_TIM5_CLK_ENABLE();
- timerConfig[0].timerdef.Instance = TIM5;
- timerConfig[0].timerdef.Init.Prescaler = (STEPPER_TIMER_PRESCALE);
- timerConfig[0].timerdef.Init.CounterMode = TIM_COUNTERMODE_UP;
- timerConfig[0].timerdef.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;
- timerConfig[0].IRQ_Id = TIM5_IRQn;
- timerConfig[0].callback = (uint32_t)TC5_Handler;
- HAL_NVIC_SetPriority(timerConfig[0].IRQ_Id, 1, 0);
- #if PIN_EXISTS(STEPPER_ENABLE)
- OUT_WRITE(STEPPER_ENABLE_PIN, HIGH);
- #endif
- break;
- case TEMP_TIMER_NUM:
- //TEMP TIMER TIM7 // any available 16bit Timer (1 already used for PWM)
- __HAL_RCC_TIM7_CLK_ENABLE();
- timerConfig[1].timerdef.Instance = TIM7;
- timerConfig[1].timerdef.Init.Prescaler = (TEMP_TIMER_PRESCALE);
- timerConfig[1].timerdef.Init.CounterMode = TIM_COUNTERMODE_UP;
- timerConfig[1].timerdef.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;
- timerConfig[1].IRQ_Id = TIM7_IRQn;
- timerConfig[1].callback = (uint32_t)TC7_Handler;
- HAL_NVIC_SetPriority(timerConfig[1].IRQ_Id, 2, 0);
- break;
- }
- timers_initialized[timer_num] = true;
- }
-
- timerConfig[timer_num].timerdef.Init.Period = (((HAL_TIMER_RATE) / timerConfig[timer_num].timerdef.Init.Prescaler) / frequency) - 1;
-
- if (HAL_TIM_Base_Init(&timerConfig[timer_num].timerdef) == HAL_OK)
- HAL_TIM_Base_Start_IT(&timerConfig[timer_num].timerdef);
- }
-
- //forward the interrupt
- extern "C" {
- void TIM5_IRQHandler() { ((void(*)())timerConfig[0].callback)(); }
- void TIM7_IRQHandler() { ((void(*)())timerConfig[1].callback)(); }
- }
-
- void HAL_timer_set_compare(const uint8_t timer_num, const uint32_t compare) {
- __HAL_TIM_SetAutoreload(&timerConfig[timer_num].timerdef, compare);
- }
-
- void HAL_timer_enable_interrupt(const uint8_t timer_num) {
- HAL_NVIC_EnableIRQ(timerConfig[timer_num].IRQ_Id);
- }
-
- void HAL_timer_disable_interrupt(const uint8_t timer_num) {
- HAL_NVIC_DisableIRQ(timerConfig[timer_num].IRQ_Id);
-
- // 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();
- }
-
- hal_timer_t HAL_timer_get_compare(const uint8_t timer_num) {
- return __HAL_TIM_GetAutoreload(&timerConfig[timer_num].timerdef);
- }
-
- uint32_t HAL_timer_get_count(const uint8_t timer_num) {
- return __HAL_TIM_GetCounter(&timerConfig[timer_num].timerdef);
- }
-
- void HAL_timer_isr_prologue(const uint8_t timer_num) {
- if (__HAL_TIM_GET_FLAG(&timerConfig[timer_num].timerdef, TIM_FLAG_UPDATE) == SET) {
- __HAL_TIM_CLEAR_FLAG(&timerConfig[timer_num].timerdef, TIM_FLAG_UPDATE);
- }
- }
-
- bool HAL_timer_interrupt_enabled(const uint8_t timer_num) {
- const uint32_t IRQ_Id = uint32_t(timerConfig[timer_num].IRQ_Id);
- return NVIC->ISER[IRQ_Id >> 5] & _BV32(IRQ_Id & 0x1F);
- }
-
- #endif // STM32GENERIC && STM32F7
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