Diff: mbed-os/targets/TARGET_STM/TARGET_STM32L4/device/stm32l4xx_ll_lptim.c

Revision:

0:9fca2b23d0ba

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed-os/targets/TARGET_STM/TARGET_STM32L4/device/stm32l4xx_ll_lptim.c	Sat Feb 23 12:13:36 2019 +0000
@@ -0,0 +1,212 @@
+/**
+  ******************************************************************************
+  * @file    stm32l4xx_ll_lptim.c
+  * @author  MCD Application Team
+  * @version V1.7.1
+  * @date    21-April-2017
+  * @brief   LPTIM LL module driver.
+  ******************************************************************************
+  * @attention
+  *
+  * <h2><center>&copy; 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.
+  *
+  ******************************************************************************
+  */
+#if defined(USE_FULL_LL_DRIVER)
+
+/* Includes ------------------------------------------------------------------*/
+#include "stm32l4xx_ll_lptim.h"
+#include "stm32l4xx_ll_bus.h"
+
+#ifdef  USE_FULL_ASSERT
+  #include "stm32_assert.h"
+#else
+  #define assert_param(expr) ((void)0U)
+#endif
+
+/** @addtogroup STM32L4xx_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****/