Diff: targets/TARGET_STM/TARGET_STM32L4/device/stm32l4xx_ll_swpmi.c

Revision:

149:156823d33999

Parent:

144:ef7eb2e8f9f7

Child:

167:e84263d55307

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/targets/TARGET_STM/TARGET_STM32L4/device/stm32l4xx_ll_swpmi.c	Fri Oct 28 11:17:30 2016 +0100
@@ -0,0 +1,190 @@
+/**
+  ******************************************************************************
+  * @file    stm32l4xx_ll_swpmi.c
+  * @author  MCD Application Team
+  * @version V1.5.1
+  * @date    31-May-2016
+  * @brief   SWPMI LL module driver.
+  ******************************************************************************
+  * @attention
+  *
+  * <h2><center>&copy; 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 "stm32l4xx_ll_swpmi.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 (SWPMI1)
+
+/** @addtogroup SWPMI_LL
+  * @{
+  */
+
+/* Private types -------------------------------------------------------------*/
+/* Private variables ---------------------------------------------------------*/
+/* Private constants ---------------------------------------------------------*/
+/* Private macros ------------------------------------------------------------*/
+/** @addtogroup SWPMI_LL_Private_Macros
+  * @{
+  */
+
+#define IS_LL_SWPMI_BITRATE_VALUE(__VALUE__) (((__VALUE__) <= 63))
+
+#define IS_LL_SWPMI_SW_BUFFER_RX(__VALUE__) (((__VALUE__) == LL_SWPMI_SW_BUFFER_RX_SINGLE) \
+                                          || ((__VALUE__) == LL_SWPMI_SW_BUFFER_RX_MULTI))
+
+#define IS_LL_SWPMI_SW_BUFFER_TX(__VALUE__) (((__VALUE__) == LL_SWPMI_SW_BUFFER_TX_SINGLE) \
+                                          || ((__VALUE__) == LL_SWPMI_SW_BUFFER_TX_MULTI))
+
+#define IS_LL_SWPMI_VOLTAGE_CLASS(__VALUE__) (((__VALUE__) == LL_SWPMI_VOLTAGE_CLASS_C) \
+                                           || ((__VALUE__) == LL_SWPMI_VOLTAGE_CLASS_B))
+
+/**
+  * @}
+  */
+
+/* Private function prototypes -----------------------------------------------*/
+
+/* Exported functions --------------------------------------------------------*/
+/** @addtogroup SWPMI_LL_Exported_Functions
+  * @{
+  */
+
+/** @addtogroup SWPMI_LL_EF_Init
+  * @{
+  */
+
+/**
+  * @brief  De-initialize the SWPMI peripheral registers to their default reset values.
+  * @param  SWPMIx SWPMI Instance
+  * @retval An ErrorStatus enumeration value
+  *          - SUCCESS: SWPMI registers are de-initialized
+  *          - ERROR: Not applicable
+  */
+ErrorStatus LL_SWPMI_DeInit(SWPMI_TypeDef *SWPMIx)
+{
+  /* Check the parameter */
+  assert_param(IS_SWPMI_INSTANCE(SWPMIx));
+
+  LL_APB1_GRP2_ForceReset(LL_APB1_GRP2_PERIPH_SWPMI1);
+  LL_APB1_GRP2_ReleaseReset(LL_APB1_GRP2_PERIPH_SWPMI1);
+
+  return SUCCESS;
+}
+
+/**
+  * @brief  Initialize the SWPMI peripheral according to the specified parameters in the SWPMI_InitStruct.
+  * @note   As some bits in SWPMI configuration registers can only be written when the SWPMI is deactivated (SWPMI_CR_SWPACT bit = 0),
+  *         SWPMI IP should be in deactivated state prior calling this function. Otherwise, ERROR result will be returned.
+  * @param  SWPMIx           SWPMI Instance
+  * @param  SWPMI_InitStruct pointer to a @ref LL_SWPMI_InitTypeDef structure that contains
+  *                          the configuration information for the SWPMI peripheral.
+  * @retval An ErrorStatus enumeration value
+  *          - SUCCESS: SWPMI registers are initialized
+  *          - ERROR: SWPMI registers are not initialized
+  */
+ErrorStatus LL_SWPMI_Init(SWPMI_TypeDef *SWPMIx, LL_SWPMI_InitTypeDef *SWPMI_InitStruct)
+{
+  ErrorStatus status = SUCCESS;
+  
+  /* Check the parameters */
+  assert_param(IS_SWPMI_INSTANCE(SWPMIx));
+  assert_param(IS_LL_SWPMI_BITRATE_VALUE(SWPMI_InitStruct->BitRatePrescaler));
+  assert_param(IS_LL_SWPMI_SW_BUFFER_TX(SWPMI_InitStruct->TxBufferingMode));
+  assert_param(IS_LL_SWPMI_SW_BUFFER_RX(SWPMI_InitStruct->RxBufferingMode));
+  assert_param(IS_LL_SWPMI_VOLTAGE_CLASS(SWPMI_InitStruct->VoltageClass));
+
+  /* SWPMI needs to be in deactivated state, in order to be able to configure some bits */
+  if (LL_SWPMI_IsActivated(SWPMIx) == 0)
+  {
+    /* Configure the BRR register (Bitrate) */
+    LL_SWPMI_SetBitRatePrescaler(SWPMIx, SWPMI_InitStruct->BitRatePrescaler);
+
+    /* Configure the voltage class */
+    LL_SWPMI_SetVoltageClass(SWPMIx, SWPMI_InitStruct->VoltageClass);
+
+    /* Set the new configuration of the SWPMI peripheral */
+    MODIFY_REG(SWPMIx->CR,
+              (SWPMI_CR_RXMODE | SWPMI_CR_TXMODE),
+              (SWPMI_InitStruct->TxBufferingMode | SWPMI_InitStruct->RxBufferingMode));
+  }
+  /* Else (SWPMI not in deactivated state => return ERROR) */
+  else
+  {
+    status = ERROR;
+  }
+
+  return status;
+}
+
+/**
+  * @brief  Set each @ref LL_SWPMI_InitTypeDef field to default value.
+  * @param  SWPMI_InitStruct pointer to a @ref LL_SWPMI_InitTypeDef structure that contains
+  *                          the configuration information for the SWPMI peripheral.
+  * @retval None
+  */
+void LL_SWPMI_StructInit(LL_SWPMI_InitTypeDef *SWPMI_InitStruct)
+{
+  /* Set SWPMI_InitStruct fields to default values */
+  SWPMI_InitStruct->VoltageClass     = LL_SWPMI_VOLTAGE_CLASS_C;
+  SWPMI_InitStruct->BitRatePrescaler = (uint32_t)0x00000001;
+  SWPMI_InitStruct->TxBufferingMode  = LL_SWPMI_SW_BUFFER_TX_SINGLE;
+  SWPMI_InitStruct->RxBufferingMode  = LL_SWPMI_SW_BUFFER_RX_SINGLE;
+}
+
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+
+#endif /* defined (SWPMI1) */
+
+/**
+  * @}
+  */
+
+#endif /* USE_FULL_LL_DRIVER */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/