diff options
Diffstat (limited to 'Projects/NUCLEO-WB35CE/Applications/FreeRTOS/FreeRTOS_Semaphore/Src/stm32wbxx_hal_timebase_tim.c')
-rw-r--r-- | Projects/NUCLEO-WB35CE/Applications/FreeRTOS/FreeRTOS_Semaphore/Src/stm32wbxx_hal_timebase_tim.c | 136 |
1 files changed, 136 insertions, 0 deletions
diff --git a/Projects/NUCLEO-WB35CE/Applications/FreeRTOS/FreeRTOS_Semaphore/Src/stm32wbxx_hal_timebase_tim.c b/Projects/NUCLEO-WB35CE/Applications/FreeRTOS/FreeRTOS_Semaphore/Src/stm32wbxx_hal_timebase_tim.c new file mode 100644 index 000000000..717e15eb1 --- /dev/null +++ b/Projects/NUCLEO-WB35CE/Applications/FreeRTOS/FreeRTOS_Semaphore/Src/stm32wbxx_hal_timebase_tim.c @@ -0,0 +1,136 @@ +/* USER CODE BEGIN Header */ +/** + ****************************************************************************** + * @file stm32g0xx_hal_timebase_tim.c + * @author MCD Application Team + * @brief HAL time base based on the hardware TIM. + * + * This file overrides the native HAL time base functions (defined as weak) + * the TIM time base: + * + Intializes the TIM peripheral to generate a Period elapsed Event each 1ms + * + HAL_IncTick is called inside HAL_TIM_PeriodElapsedCallback ie each 1ms + * + @verbatim + ============================================================================== + ##### How to use this driver ##### + ============================================================================== + [..] + This file must be copied to the application folder and modified as follows: + (#) Rename it to 'stm32g0xx_hal_timebase_tim.c' + (#) Add this file and the TIM HAL driver files to your project and make sure + HAL_TIM_MODULE_ENABLED is defined in stm32l4xx_hal_conf.h + + [..] + (@) The application needs to ensure that the time base is always set to 1 millisecond + to have correct HAL operation. + + @endverbatim + ****************************************************************************** + * @attention + * + * <h2><center>© Copyright (c) 2019 STMicroelectronics. + * All rights reserved.</center></h2> + * + * This software component is licensed by ST under Ultimate Liberty license + * SLA0044, the "License"; You may not use this file except in compliance with + * the License. You may obtain a copy of the License at: + * www.st.com/SLA0044 + * + ****************************************************************************** + */ +/* USER CODE END Header */ + +/* Includes ------------------------------------------------------------------*/ +#include "stm32wbxx_hal.h" +#include "stm32wbxx_hal_tim.h" + +/* Private typedef -----------------------------------------------------------*/ +/* Private define ------------------------------------------------------------*/ +/* Private macro -------------------------------------------------------------*/ +/* Private variables ---------------------------------------------------------*/ +TIM_HandleTypeDef htim17; +/* Private function prototypes -----------------------------------------------*/ +/* Private functions ---------------------------------------------------------*/ + +/** + * @brief This function configures the TIM17 as a time base source. + * The time source is configured to have 1ms time base with a dedicated + * Tick interrupt priority. + * @note This function is called automatically at the beginning of program after + * reset by HAL_Init() or at any time when clock is configured, by HAL_RCC_ClockConfig(). + * @param TickPriority: Tick interrupt priority. + * @retval HAL status + */ +HAL_StatusTypeDef HAL_InitTick(uint32_t TickPriority) +{ + RCC_ClkInitTypeDef clkconfig; + uint32_t uwTimclock = 0; + uint32_t uwPrescalerValue = 0; + uint32_t pFLatency; + + /*Configure the TIM17 IRQ priority */ + HAL_NVIC_SetPriority(TIM1_TRG_COM_TIM17_IRQn, TickPriority ,0); + + /* Enable the TIM17 global Interrupt */ + HAL_NVIC_EnableIRQ(TIM1_TRG_COM_TIM17_IRQn); + + /* Enable TIM17 clock */ + __HAL_RCC_TIM17_CLK_ENABLE(); + + /* Get clock configuration */ + HAL_RCC_GetClockConfig(&clkconfig, &pFLatency); + + /* Compute TIM17 clock */ + uwTimclock = HAL_RCC_GetPCLK2Freq(); + + /* Compute the prescaler value to have TIM17 counter clock equal to 1MHz */ + uwPrescalerValue = (uint32_t) ((uwTimclock / 1000000) - 1); + + /* Initialize TIM17 */ + htim17.Instance = TIM17; + + /* Initialize TIMx peripheral as follow: + + Period = [(TIM17CLK/1000) - 1]. to have a (1/1000) s time base. + + Prescaler = (uwTimclock/1000000 - 1) to have a 1MHz counter clock. + + ClockDivision = 0 + + Counter direction = Up + */ + htim17.Init.Period = (1000000 / 1000) - 1; + htim17.Init.Prescaler = uwPrescalerValue; + htim17.Init.ClockDivision = 0; + htim17.Init.CounterMode = TIM_COUNTERMODE_UP; + if(HAL_TIM_Base_Init(&htim17) == HAL_OK) + { + /* Start the TIM time Base generation in interrupt mode */ + return HAL_TIM_Base_Start_IT(&htim17); + } + + /* Return function status */ + return HAL_ERROR; +} + +/** + * @brief Suspend Tick increment. + * @note Disable the tick increment by disabling TIM17 update interrupt. + * @param None + * @retval None + */ +void HAL_SuspendTick(void) +{ + /* Disable TIM17 update Interrupt */ + __HAL_TIM_DISABLE_IT(&htim17, TIM_IT_UPDATE); +} + +/** + * @brief Resume Tick increment. + * @note Enable the tick increment by Enabling TIM17 update interrupt. + * @param None + * @retval None + */ +void HAL_ResumeTick(void) +{ + /* Enable TIM17 Update interrupt */ + __HAL_TIM_ENABLE_IT(&htim17, TIM_IT_UPDATE); +} + +/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/ |