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Diffstat (limited to 'ext/hal/st/stm32cube/stm32f1xx/drivers/src/stm32f1xx_hal_timebase_tim_template.c')
| -rw-r--r-- | ext/hal/st/stm32cube/stm32f1xx/drivers/src/stm32f1xx_hal_timebase_tim_template.c | 184 |
1 files changed, 184 insertions, 0 deletions
diff --git a/ext/hal/st/stm32cube/stm32f1xx/drivers/src/stm32f1xx_hal_timebase_tim_template.c b/ext/hal/st/stm32cube/stm32f1xx/drivers/src/stm32f1xx_hal_timebase_tim_template.c new file mode 100644 index 000000000..00b0fe56d --- /dev/null +++ b/ext/hal/st/stm32cube/stm32f1xx/drivers/src/stm32f1xx_hal_timebase_tim_template.c @@ -0,0 +1,184 @@ +/** + ****************************************************************************** + * @file stm32f1xx_hal_timebase_tim_template.c + * @author MCD Application Team + * @version V1.1.0 + * @date 14-April-2017 + * @brief HAL time base based on the hardware TIM Template. + * + * This file overrides the native HAL time base functions (defined as weak) + * the TIM time base: + * + Intializes the TIM peripheral generate a Period elapsed Event each 1ms + * + HAL_IncTick is called inside HAL_TIM_PeriodElapsedCallback ie each 1ms + * + ****************************************************************************** + * @attention + * + * <h2><center>© COPYRIGHT(c) 2017 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. + * + ****************************************************************************** + */ + +/* Includes ------------------------------------------------------------------*/ +#include "stm32f1xx_hal.h" + +/** @addtogroup STM32F1xx_HAL_Driver + * @{ + */ + +/** @addtogroup HAL_TimeBase_TIM + * @{ + */ + +/* Private typedef -----------------------------------------------------------*/ +/* Private define ------------------------------------------------------------*/ +/* Private macro -------------------------------------------------------------*/ +/* Private variables ---------------------------------------------------------*/ +TIM_HandleTypeDef TimHandle; +/* Private function prototypes -----------------------------------------------*/ +void TIM2_IRQHandler(void); +/* Private functions ---------------------------------------------------------*/ + +/** + * @brief This function configures the TIM2 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, uwAPB1Prescaler = 0U; + uint32_t uwPrescalerValue = 0U; + uint32_t pFLatency; + + /*Configure the TIM2 IRQ priority */ + HAL_NVIC_SetPriority(TIM2_IRQn, TickPriority ,0U); + + /* Enable the TIM2 global Interrupt */ + HAL_NVIC_EnableIRQ(TIM2_IRQn); + + /* Enable TIM2 clock */ + __HAL_RCC_TIM2_CLK_ENABLE(); + + /* Get clock configuration */ + HAL_RCC_GetClockConfig(&clkconfig, &pFLatency); + + /* Get APB1 prescaler */ + uwAPB1Prescaler = clkconfig.APB1CLKDivider; + + /* Compute TIM2 clock */ + if (uwAPB1Prescaler == RCC_HCLK_DIV1) + { + uwTimclock = HAL_RCC_GetPCLK1Freq(); + } + else + { + uwTimclock = 2*HAL_RCC_GetPCLK1Freq(); + } + + /* Compute the prescaler value to have TIM2 counter clock equal to 1MHz */ + uwPrescalerValue = (uint32_t) ((uwTimclock / 1000000U) - 1U); + + /* Initialize TIM2 */ + TimHandle.Instance = TIM2; + + /* Initialize TIMx peripheral as follow: + + Period = [(TIM2CLK/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 + */ + TimHandle.Init.Period = (1000000U / 1000U) - 1U; + TimHandle.Init.Prescaler = uwPrescalerValue; + TimHandle.Init.ClockDivision = 0U; + TimHandle.Init.CounterMode = TIM_COUNTERMODE_UP; + TimHandle.Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_DISABLE; + if(HAL_TIM_Base_Init(&TimHandle) == HAL_OK) + { + /* Start the TIM time Base generation in interrupt mode */ + return HAL_TIM_Base_Start_IT(&TimHandle); + } + + /* Return function status */ + return HAL_ERROR; +} + +/** + * @brief Suspend Tick increment. + * @note Disable the tick increment by disabling TIM2 update interrupt. + * @retval None + */ +void HAL_SuspendTick(void) +{ + /* Disable TIM2 update Interrupt */ + __HAL_TIM_DISABLE_IT(&TimHandle, TIM_IT_UPDATE); +} + +/** + * @brief Resume Tick increment. + * @note Enable the tick increment by Enabling TIM2 update interrupt. + * @retval None + */ +void HAL_ResumeTick(void) +{ + /* Enable TIM2 Update interrupt */ + __HAL_TIM_ENABLE_IT(&TimHandle, TIM_IT_UPDATE); +} + +/** + * @brief Period elapsed callback in non blocking mode + * @note This function is called when TIM2 interrupt took place, inside + * HAL_TIM_IRQHandler(). It makes a direct call to HAL_IncTick() to increment + * a global variable "uwTick" used as application time base. + * @param htim : TIM handle + * @retval None + */ +void HAL_TIM_PeriodElapsedCallback(TIM_HandleTypeDef *htim) +{ + HAL_IncTick(); +} + +/** + * @brief This function handles TIM interrupt request. + * @retval None + */ +void TIM2_IRQHandler(void) +{ + HAL_TIM_IRQHandler(&TimHandle); +} + +/** + * @} + */ + +/** + * @} + */ + +/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/ |