| /** |
| ****************************************************************************** |
| * @file stm32f7xx_ll_lptim.c |
| * @author MCD Application Team |
| * @brief LPTIM LL module driver. |
| ****************************************************************************** |
| * @attention |
| * |
| * <h2><center>© Copyright (c) 2017 STMicroelectronics. |
| * All rights reserved.</center></h2> |
| * |
| * This software component is licensed by ST under BSD 3-Clause license, |
| * the "License"; You may not use this file except in compliance with the |
| * License. You may obtain a copy of the License at: |
| * opensource.org/licenses/BSD-3-Clause |
| * |
| ****************************************************************************** |
| */ |
| #if defined(USE_FULL_LL_DRIVER) |
| |
| /* Includes ------------------------------------------------------------------*/ |
| #include "stm32f7xx_ll_lptim.h" |
| #include "stm32f7xx_ll_bus.h" |
| |
| #ifdef USE_FULL_ASSERT |
| #include "stm32_assert.h" |
| #else |
| #define assert_param(expr) ((void)0U) |
| #endif |
| |
| /** @addtogroup STM32F7xx_LL_Driver |
| * @{ |
| */ |
| |
| #if defined (LPTIM1) || defined (LPTIM2) |
| |
| /** @addtogroup LPTIM_LL |
| * @{ |
| */ |
| |
| /* Private types -------------------------------------------------------------*/ |
| /* Private variables ---------------------------------------------------------*/ |
| /* Private constants ---------------------------------------------------------*/ |
| /* Private macros ------------------------------------------------------------*/ |
| /** @addtogroup LPTIM_LL_Private_Macros |
| * @{ |
| */ |
| #define IS_LL_LPTIM_CLOCK_SOURCE(__VALUE__) (((__VALUE__) == LL_LPTIM_CLK_SOURCE_INTERNAL) \ |
| || ((__VALUE__) == LL_LPTIM_CLK_SOURCE_EXTERNAL)) |
| |
| #define IS_LL_LPTIM_CLOCK_PRESCALER(__VALUE__) (((__VALUE__) == LL_LPTIM_PRESCALER_DIV1) \ |
| || ((__VALUE__) == LL_LPTIM_PRESCALER_DIV2) \ |
| || ((__VALUE__) == LL_LPTIM_PRESCALER_DIV4) \ |
| || ((__VALUE__) == LL_LPTIM_PRESCALER_DIV8) \ |
| || ((__VALUE__) == LL_LPTIM_PRESCALER_DIV16) \ |
| || ((__VALUE__) == LL_LPTIM_PRESCALER_DIV32) \ |
| || ((__VALUE__) == LL_LPTIM_PRESCALER_DIV64) \ |
| || ((__VALUE__) == LL_LPTIM_PRESCALER_DIV128)) |
| |
| #define IS_LL_LPTIM_WAVEFORM(__VALUE__) (((__VALUE__) == LL_LPTIM_OUTPUT_WAVEFORM_PWM) \ |
| || ((__VALUE__) == LL_LPTIM_OUTPUT_WAVEFORM_SETONCE)) |
| |
| #define IS_LL_LPTIM_OUTPUT_POLARITY(__VALUE__) (((__VALUE__) == LL_LPTIM_OUTPUT_POLARITY_REGULAR) \ |
| || ((__VALUE__) == LL_LPTIM_OUTPUT_POLARITY_INVERSE)) |
| /** |
| * @} |
| */ |
| |
| |
| /* Private function prototypes -----------------------------------------------*/ |
| /* Exported functions --------------------------------------------------------*/ |
| /** @addtogroup LPTIM_LL_Exported_Functions |
| * @{ |
| */ |
| |
| /** @addtogroup LPTIM_LL_EF_Init |
| * @{ |
| */ |
| |
| /** |
| * @brief Set LPTIMx registers to their reset values. |
| * @param LPTIMx LP Timer instance |
| * @retval An ErrorStatus enumeration value: |
| * - SUCCESS: LPTIMx registers are de-initialized |
| * - ERROR: invalid LPTIMx instance |
| */ |
| ErrorStatus LL_LPTIM_DeInit(LPTIM_TypeDef* LPTIMx) |
| { |
| ErrorStatus result = SUCCESS; |
| |
| /* Check the parameters */ |
| assert_param(IS_LPTIM_INSTANCE(LPTIMx)); |
| |
| if (LPTIMx == LPTIM1) |
| { |
| LL_APB1_GRP1_ForceReset(LL_APB1_GRP1_PERIPH_LPTIM1); |
| LL_APB1_GRP1_ReleaseReset(LL_APB1_GRP1_PERIPH_LPTIM1); |
| } |
| #if defined(LPTIM2) |
| else if (LPTIMx == LPTIM2) |
| { |
| LL_APB1_GRP2_ForceReset(LL_APB1_GRP2_PERIPH_LPTIM2); |
| LL_APB1_GRP2_ReleaseReset(LL_APB1_GRP2_PERIPH_LPTIM2); |
| } |
| #endif |
| else |
| { |
| result = ERROR; |
| } |
| |
| return result; |
| } |
| |
| /** |
| * @brief Set each fields of the LPTIM_InitStruct structure to its default |
| * value. |
| * @param LPTIM_InitStruct pointer to a @ref LL_LPTIM_InitTypeDef structure |
| * @retval None |
| */ |
| void LL_LPTIM_StructInit(LL_LPTIM_InitTypeDef* LPTIM_InitStruct) |
| { |
| /* Set the default configuration */ |
| LPTIM_InitStruct->ClockSource = LL_LPTIM_CLK_SOURCE_INTERNAL; |
| LPTIM_InitStruct->Prescaler = LL_LPTIM_PRESCALER_DIV1; |
| LPTIM_InitStruct->Waveform = LL_LPTIM_OUTPUT_WAVEFORM_PWM; |
| LPTIM_InitStruct->Polarity = LL_LPTIM_OUTPUT_POLARITY_REGULAR; |
| } |
| |
| /** |
| * @brief Configure the LPTIMx peripheral according to the specified parameters. |
| * @note LL_LPTIM_Init can only be called when the LPTIM instance is disabled. |
| * @note LPTIMx can be disabled using unitary function @ref LL_LPTIM_Disable(). |
| * @param LPTIMx LP Timer Instance |
| * @param LPTIM_InitStruct pointer to a @ref LL_LPTIM_InitTypeDef structure |
| * @retval An ErrorStatus enumeration value: |
| * - SUCCESS: LPTIMx instance has been initialized |
| * - ERROR: LPTIMx instance hasn't been initialized |
| */ |
| ErrorStatus LL_LPTIM_Init(LPTIM_TypeDef * LPTIMx, LL_LPTIM_InitTypeDef* LPTIM_InitStruct) |
| { |
| ErrorStatus result = SUCCESS; |
| |
| /* The LPTIMx_CFGR register must only be modified when the LPTIM is disabled |
| (ENABLE bit is reset to 0). |
| */ |
| if (LL_LPTIM_IsEnabled(LPTIMx)) |
| { |
| result = ERROR; |
| } |
| else |
| { |
| /* Check the parameters */ |
| assert_param(IS_LPTIM_INSTANCE(LPTIMx)); |
| assert_param(IS_LL_LPTIM_CLOCK_SOURCE(LPTIM_InitStruct->ClockSource)); |
| assert_param(IS_LL_LPTIM_CLOCK_PRESCALER(LPTIM_InitStruct->Prescaler)); |
| assert_param(IS_LL_LPTIM_WAVEFORM(LPTIM_InitStruct->Waveform)); |
| assert_param(IS_LL_LPTIM_OUTPUT_POLARITY(LPTIM_InitStruct->Polarity)); |
| |
| /* Set CKSEL bitfield according to ClockSource value */ |
| /* Set PRESC bitfield according to Prescaler value */ |
| /* Set WAVE bitfield according to Waveform value */ |
| /* Set WAVEPOL bitfield according to Polarity value */ |
| MODIFY_REG(LPTIMx->CFGR, |
| (LPTIM_CFGR_CKSEL | LPTIM_CFGR_PRESC | LPTIM_CFGR_WAVE| LPTIM_CFGR_WAVPOL), |
| LPTIM_InitStruct->ClockSource | \ |
| LPTIM_InitStruct->Prescaler | \ |
| LPTIM_InitStruct->Waveform | \ |
| LPTIM_InitStruct->Polarity); |
| } |
| |
| return result; |
| } |
| |
| /** |
| * @} |
| */ |
| |
| /** |
| * @} |
| */ |
| |
| /** |
| * @} |
| */ |
| |
| #endif /* defined (LPTIM1) || defined (LPTIM2) */ |
| |
| /** |
| * @} |
| */ |
| |
| #endif /* USE_FULL_LL_DRIVER */ |
| |
| /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/ |