152 lines
5.5 KiB
C++
152 lines
5.5 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) 2015-2016 Nico Tonnhofer wurstnase.reprap@gmail.com
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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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#ifdef STM32F7
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// --------------------------------------------------------------------------
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// Includes
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// --------------------------------------------------------------------------
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#include "HAL.h"
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#include "HAL_timers_STM32F7.h"
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// --------------------------------------------------------------------------
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// Externals
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// --------------------------------------------------------------------------
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// --------------------------------------------------------------------------
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// Local defines
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// --------------------------------------------------------------------------
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#define NUM_HARDWARE_TIMERS 2
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//#define PRESCALER 1
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// --------------------------------------------------------------------------
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// Types
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// --------------------------------------------------------------------------
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// --------------------------------------------------------------------------
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// Public Variables
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// --------------------------------------------------------------------------
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// --------------------------------------------------------------------------
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// Private Variables
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// --------------------------------------------------------------------------
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tTimerConfig timerConfig[NUM_HARDWARE_TIMERS];
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// --------------------------------------------------------------------------
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// Function prototypes
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// --------------------------------------------------------------------------
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// --------------------------------------------------------------------------
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// Private functions
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// --------------------------------------------------------------------------
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// --------------------------------------------------------------------------
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// Public functions
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// --------------------------------------------------------------------------
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bool timers_initialized[NUM_HARDWARE_TIMERS] = {false};
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void HAL_timer_start(const uint8_t timer_num, const uint32_t frequency) {
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if (!timers_initialized[timer_num]) {
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switch (timer_num) {
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case STEP_TIMER_NUM:
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//STEPPER TIMER TIM5 //use a 32bit timer
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__HAL_RCC_TIM5_CLK_ENABLE();
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timerConfig[0].timerdef.Instance = TIM5;
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timerConfig[0].timerdef.Init.Prescaler = (STEPPER_TIMER_PRESCALE);
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timerConfig[0].timerdef.Init.CounterMode = TIM_COUNTERMODE_UP;
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timerConfig[0].timerdef.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;
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timerConfig[0].IRQ_Id = TIM5_IRQn;
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timerConfig[0].callback = (uint32_t)TC5_Handler;
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HAL_NVIC_SetPriority(timerConfig[0].IRQ_Id, 1, 0);
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pinMode(STEPPER_ENABLE_PIN,OUTPUT);
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digitalWrite(STEPPER_ENABLE_PIN,LOW);
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break;
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case TEMP_TIMER_NUM:
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//TEMP TIMER TIM7 // any available 16bit Timer (1 already used for PWM)
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__HAL_RCC_TIM7_CLK_ENABLE();
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timerConfig[1].timerdef.Instance = TIM7;
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timerConfig[1].timerdef.Init.Prescaler = (TEMP_TIMER_PRESCALE);
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timerConfig[1].timerdef.Init.CounterMode = TIM_COUNTERMODE_UP;
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timerConfig[1].timerdef.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;
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timerConfig[1].IRQ_Id = TIM7_IRQn;
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timerConfig[1].callback = (uint32_t)TC7_Handler;
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HAL_NVIC_SetPriority(timerConfig[1].IRQ_Id, 2, 0);
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break;
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}
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timers_initialized[timer_num] = true;
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}
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timerConfig[timer_num].timerdef.Init.Period = (((HAL_TIMER_RATE) / timerConfig[timer_num].timerdef.Init.Prescaler) / frequency) - 1;
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if (HAL_TIM_Base_Init(&timerConfig[timer_num].timerdef) == HAL_OK)
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HAL_TIM_Base_Start_IT(&timerConfig[timer_num].timerdef);
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}
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//forward the interrupt
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extern "C" void TIM5_IRQHandler() {
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((void(*)(void))timerConfig[0].callback)();
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}
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extern "C" void TIM7_IRQHandler() {
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((void(*)(void))timerConfig[1].callback)();
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}
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void HAL_timer_set_compare(const uint8_t timer_num, const uint32_t compare) {
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__HAL_TIM_SetAutoreload(&timerConfig[timer_num].timerdef, compare);
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}
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void HAL_timer_enable_interrupt(const uint8_t timer_num) {
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HAL_NVIC_EnableIRQ(timerConfig[timer_num].IRQ_Id);
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}
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void HAL_timer_disable_interrupt(const uint8_t timer_num) {
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HAL_NVIC_DisableIRQ(timerConfig[timer_num].IRQ_Id);
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// We NEED memory barriers to ensure Interrupts are actually disabled!
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// ( https://dzone.com/articles/nvic-disabling-interrupts-on-arm-cortex-m-and-the )
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__DSB();
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__ISB();
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}
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hal_timer_t HAL_timer_get_compare(const uint8_t timer_num) {
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return __HAL_TIM_GetAutoreload(&timerConfig[timer_num].timerdef);
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}
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uint32_t HAL_timer_get_count(const uint8_t timer_num) {
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return __HAL_TIM_GetCounter(&timerConfig[timer_num].timerdef);
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}
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void HAL_timer_isr_prologue(const uint8_t timer_num) {
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if (__HAL_TIM_GET_FLAG(&timerConfig[timer_num].timerdef, TIM_FLAG_UPDATE) == SET) {
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__HAL_TIM_CLEAR_FLAG(&timerConfig[timer_num].timerdef, TIM_FLAG_UPDATE);
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}
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}
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#endif // STM32F7
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