126 lines
4.5 KiB
C
126 lines
4.5 KiB
C
/**
|
||
******************************************************************************
|
||
* @file hal_tick.c
|
||
* @author MCD Application Team
|
||
* @brief Initialization of HAL tick
|
||
******************************************************************************
|
||
* @attention
|
||
*
|
||
* <h2><center>© COPYRIGHT 2014 STMicroelectronics</center></h2>
|
||
*
|
||
* Redistribution and use in source and binary forms, with or without modification,
|
||
* are permitted provided that the following conditions are met:
|
||
* 1. Redistributions of source code must retain the above copyright notice,
|
||
* this list of conditions and the following disclaimer.
|
||
* 2. Redistributions in binary form must reproduce the above copyright notice,
|
||
* this list of conditions and the following disclaimer in the documentation
|
||
* and/or other materials provided with the distribution.
|
||
* 3. Neither the name of STMicroelectronics nor the names of its contributors
|
||
* may be used to endorse or promote products derived from this software
|
||
* without specific prior written permission.
|
||
*
|
||
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
||
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
||
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
|
||
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
|
||
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
|
||
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
|
||
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
||
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||
*
|
||
******************************************************************************
|
||
*/
|
||
#ifdef __ARM_STM32F411__
|
||
|
||
#include "mbed-hal_tick_stm32.h"
|
||
|
||
TIM_HandleTypeDef TimMasterHandle;
|
||
uint32_t PreviousVal = 0;
|
||
|
||
void us_ticker_irq_handler(void);
|
||
|
||
void timer_irq_handler(void) {
|
||
// Channel 1 for mbed timeout
|
||
if (__HAL_TIM_GET_IT_SOURCE(&TimMasterHandle, TIM_IT_CC1) == SET) {
|
||
//us_ticker_irq_handler();
|
||
}
|
||
|
||
// Channel 2 for HAL tick
|
||
if (__HAL_TIM_GET_IT_SOURCE(&TimMasterHandle, TIM_IT_CC2) == SET) {
|
||
__HAL_TIM_CLEAR_IT(&TimMasterHandle, TIM_IT_CC2);
|
||
uint32_t val = __HAL_TIM_GET_COUNTER(&TimMasterHandle);
|
||
if ((val - PreviousVal) >= HAL_TICK_DELAY) {
|
||
// Increment HAL variable
|
||
//HAL_IncTick();
|
||
// Prepare next interrupt
|
||
__HAL_TIM_SET_COMPARE(&TimMasterHandle, TIM_CHANNEL_2, val + HAL_TICK_DELAY);
|
||
PreviousVal = val;
|
||
#if 0 // For DEBUG only
|
||
HAL_GPIO_TogglePin(GPIOB, GPIO_PIN_6);
|
||
#endif
|
||
}
|
||
}
|
||
}
|
||
|
||
// Reconfigure the HAL tick using a standard timer instead of systick.
|
||
HAL_StatusTypeDef HAL_InitTick(uint32_t TickPriority) {
|
||
// Enable timer clock
|
||
TIM_MST_RCC;
|
||
|
||
// Reset timer
|
||
TIM_MST_RESET_ON;
|
||
TIM_MST_RESET_OFF;
|
||
|
||
// Update the SystemCoreClock variable
|
||
SystemCoreClockUpdate();
|
||
|
||
// Configure time base
|
||
TimMasterHandle.Instance = TIM_MST;
|
||
TimMasterHandle.Init.Period = 0xFFFFFFFF;
|
||
TimMasterHandle.Init.Prescaler = (uint32_t)(SystemCoreClock / 1000000) - 1; // 1 <20>s tick
|
||
TimMasterHandle.Init.ClockDivision = 0;
|
||
TimMasterHandle.Init.CounterMode = TIM_COUNTERMODE_UP;
|
||
TimMasterHandle.Init.RepetitionCounter = 0;
|
||
HAL_TIM_OC_Init(&TimMasterHandle);
|
||
|
||
NVIC_SetVector(TIM_MST_IRQ, (uint32_t)timer_irq_handler);
|
||
NVIC_EnableIRQ(TIM_MST_IRQ);
|
||
|
||
// Channel 1 for mbed timeout
|
||
HAL_TIM_OC_Start(&TimMasterHandle, TIM_CHANNEL_1);
|
||
|
||
// Channel 2 for HAL tick
|
||
HAL_TIM_OC_Start(&TimMasterHandle, TIM_CHANNEL_2);
|
||
PreviousVal = __HAL_TIM_GET_COUNTER(&TimMasterHandle);
|
||
__HAL_TIM_SET_COMPARE(&TimMasterHandle, TIM_CHANNEL_2, PreviousVal + HAL_TICK_DELAY);
|
||
__HAL_TIM_ENABLE_IT(&TimMasterHandle, TIM_IT_CC2);
|
||
|
||
#if 0 // For DEBUG only
|
||
__GPIOB_CLK_ENABLE();
|
||
GPIO_InitTypeDef GPIO_InitStruct;
|
||
GPIO_InitStruct.Pin = GPIO_PIN_6;
|
||
GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
|
||
GPIO_InitStruct.Pull = GPIO_PULLUP;
|
||
GPIO_InitStruct.Speed = GPIO_SPEED_FAST;
|
||
HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
|
||
#endif
|
||
|
||
return HAL_OK;
|
||
}
|
||
|
||
/**
|
||
* @}
|
||
*/
|
||
|
||
/**
|
||
* @}
|
||
*/
|
||
|
||
/**
|
||
* @}
|
||
*/
|
||
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
|
||
#endif
|