/** | |
****************************************************************************** | |
* @file stm32l0xx_ll_lptim.c | |
* @author MCD Application Team | |
* @brief LPTIM LL module driver. | |
****************************************************************************** | |
* @attention | |
* | |
* <h2><center>© COPYRIGHT(c) 2016 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. | |
* | |
****************************************************************************** | |
*/ | |
#if defined(USE_FULL_LL_DRIVER) | |
/* Includes ------------------------------------------------------------------*/ | |
#include "stm32l0xx_ll_lptim.h" | |
#include "stm32l0xx_ll_bus.h" | |
#ifdef USE_FULL_ASSERT | |
#include "stm32_assert.h" | |
#else | |
#define assert_param(expr) ((void)0U) | |
#endif | |
/** @addtogroup STM32L0xx_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_LPTIM_CLOCK_SOURCE(__VALUE__) (((__VALUE__) == LL_LPTIM_CLK_SOURCE_INTERNAL) \ | |
|| ((__VALUE__) == LL_LPTIM_CLK_SOURCE_EXTERNAL)) | |
#define IS_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_LPTIM_WAVEFORM(__VALUE__) (((__VALUE__) == LL_LPTIM_OUTPUT_WAVEFORM_PWM) \ | |
|| ((__VALUE__) == LL_LPTIM_OUTPUT_WAVEFORM_SETONCE)) | |
#define IS_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_LPTIM_CLOCK_SOURCE(LPTIM_InitStruct->ClockSource)); | |
assert_param(IS_LPTIM_CLOCK_PRESCALER(LPTIM_InitStruct->Prescaler)); | |
assert_param(IS_LPTIM_WAVEFORM(LPTIM_InitStruct->Waveform)); | |
assert_param(IS_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****/ |