/**+
−
  ******************************************************************************+
−
  * @file    stm32f4xx_ll_usart.c+
−
  * @author  MCD Application Team+
−
  * @brief   USART 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 "stm32f4xx_ll_usart.h"+
−
#include "stm32f4xx_ll_rcc.h"+
−
#include "stm32f4xx_ll_bus.h"+
−
#ifdef  USE_FULL_ASSERT+
−
#include "stm32_assert.h"+
−
#else+
−
#define assert_param(expr) ((void)0U)+
−
#endif+
−
+
−
/** @addtogroup STM32F4xx_LL_Driver+
−
  * @{+
−
  */+
−
+
−
#if defined (USART1) || defined (USART2) || defined (USART3) || defined (USART6) || defined (UART4) || defined (UART5) || defined (UART7) || defined (UART8) || defined (UART9) || defined (UART10)+
−
+
−
/** @addtogroup USART_LL+
−
  * @{+
−
  */+
−
+
−
/* Private types -------------------------------------------------------------*/+
−
/* Private variables ---------------------------------------------------------*/+
−
/* Private constants ---------------------------------------------------------*/+
−
/** @addtogroup USART_LL_Private_Constants+
−
  * @{+
−
  */+
−
+
−
/**+
−
  * @}+
−
  */+
−
+
−
+
−
/* Private macros ------------------------------------------------------------*/+
−
/** @addtogroup USART_LL_Private_Macros+
−
  * @{+
−
  */+
−
+
−
/* __BAUDRATE__ The maximum Baud Rate is derived from the maximum clock available+
−
 *              divided by the smallest oversampling used on the USART (i.e. 8)    */+
−
#define IS_LL_USART_BAUDRATE(__BAUDRATE__) ((__BAUDRATE__) <= 12500000U)+
−
+
−
/* __VALUE__ In case of oversampling by 16 and 8, BRR content must be greater than or equal to 16d. */+
−
#define IS_LL_USART_BRR_MIN(__VALUE__) ((__VALUE__) >= 16U)+
−
+
−
/* __VALUE__ BRR content must be lower than or equal to 0xFFFF. */+
−
#define IS_LL_USART_BRR_MAX(__VALUE__) ((__VALUE__) <= 0x0000FFFFU)+
−
+
−
#define IS_LL_USART_DIRECTION(__VALUE__) (((__VALUE__) == LL_USART_DIRECTION_NONE) \+
−
                                       || ((__VALUE__) == LL_USART_DIRECTION_RX) \+
−
                                       || ((__VALUE__) == LL_USART_DIRECTION_TX) \+
−
                                       || ((__VALUE__) == LL_USART_DIRECTION_TX_RX))+
−
+
−
#define IS_LL_USART_PARITY(__VALUE__) (((__VALUE__) == LL_USART_PARITY_NONE) \+
−
                                    || ((__VALUE__) == LL_USART_PARITY_EVEN) \+
−
                                    || ((__VALUE__) == LL_USART_PARITY_ODD))+
−
+
−
#define IS_LL_USART_DATAWIDTH(__VALUE__) (((__VALUE__) == LL_USART_DATAWIDTH_8B) \+
−
                                       || ((__VALUE__) == LL_USART_DATAWIDTH_9B))+
−
+
−
#define IS_LL_USART_OVERSAMPLING(__VALUE__) (((__VALUE__) == LL_USART_OVERSAMPLING_16) \+
−
                                          || ((__VALUE__) == LL_USART_OVERSAMPLING_8))+
−
+
−
#define IS_LL_USART_LASTBITCLKOUTPUT(__VALUE__) (((__VALUE__) == LL_USART_LASTCLKPULSE_NO_OUTPUT) \+
−
                                              || ((__VALUE__) == LL_USART_LASTCLKPULSE_OUTPUT))+
−
+
−
#define IS_LL_USART_CLOCKPHASE(__VALUE__) (((__VALUE__) == LL_USART_PHASE_1EDGE) \+
−
                                        || ((__VALUE__) == LL_USART_PHASE_2EDGE))+
−
+
−
#define IS_LL_USART_CLOCKPOLARITY(__VALUE__) (((__VALUE__) == LL_USART_POLARITY_LOW) \+
−
                                           || ((__VALUE__) == LL_USART_POLARITY_HIGH))+
−
+
−
#define IS_LL_USART_CLOCKOUTPUT(__VALUE__) (((__VALUE__) == LL_USART_CLOCK_DISABLE) \+
−
                                         || ((__VALUE__) == LL_USART_CLOCK_ENABLE))+
−
+
−
#define IS_LL_USART_STOPBITS(__VALUE__) (((__VALUE__) == LL_USART_STOPBITS_0_5) \+
−
                                      || ((__VALUE__) == LL_USART_STOPBITS_1) \+
−
                                      || ((__VALUE__) == LL_USART_STOPBITS_1_5) \+
−
                                      || ((__VALUE__) == LL_USART_STOPBITS_2))+
−
+
−
#define IS_LL_USART_HWCONTROL(__VALUE__) (((__VALUE__) == LL_USART_HWCONTROL_NONE) \+
−
                                       || ((__VALUE__) == LL_USART_HWCONTROL_RTS) \+
−
                                       || ((__VALUE__) == LL_USART_HWCONTROL_CTS) \+
−
                                       || ((__VALUE__) == LL_USART_HWCONTROL_RTS_CTS))+
−
+
−
/**+
−
  * @}+
−
  */+
−
+
−
/* Private function prototypes -----------------------------------------------*/+
−
+
−
/* Exported functions --------------------------------------------------------*/+
−
/** @addtogroup USART_LL_Exported_Functions+
−
  * @{+
−
  */+
−
+
−
/** @addtogroup USART_LL_EF_Init+
−
  * @{+
−
  */+
−
+
−
/**+
−
  * @brief  De-initialize USART registers (Registers restored to their default values).+
−
  * @param  USARTx USART Instance+
−
  * @retval An ErrorStatus enumeration value:+
−
  *          - SUCCESS: USART registers are de-initialized+
−
  *          - ERROR: USART registers are not de-initialized+
−
  */+
−
ErrorStatus LL_USART_DeInit(USART_TypeDef *USARTx)+
−
{+
−
  ErrorStatus status = SUCCESS;+
−
+
−
  /* Check the parameters */+
−
  assert_param(IS_UART_INSTANCE(USARTx));+
−
+
−
  if (USARTx == USART1)+
−
  {+
−
    /* Force reset of USART clock */+
−
    LL_APB2_GRP1_ForceReset(LL_APB2_GRP1_PERIPH_USART1);+
−
+
−
    /* Release reset of USART clock */+
−
    LL_APB2_GRP1_ReleaseReset(LL_APB2_GRP1_PERIPH_USART1);+
−
  }+
−
  else if (USARTx == USART2)+
−
  {+
−
    /* Force reset of USART clock */+
−
    LL_APB1_GRP1_ForceReset(LL_APB1_GRP1_PERIPH_USART2);+
−
+
−
    /* Release reset of USART clock */+
−
    LL_APB1_GRP1_ReleaseReset(LL_APB1_GRP1_PERIPH_USART2);+
−
  }+
−
#if defined(USART3)+
−
  else if (USARTx == USART3)+
−
  {+
−
    /* Force reset of USART clock */+
−
    LL_APB1_GRP1_ForceReset(LL_APB1_GRP1_PERIPH_USART3);+
−
+
−
    /* Release reset of USART clock */+
−
    LL_APB1_GRP1_ReleaseReset(LL_APB1_GRP1_PERIPH_USART3);+
−
  }+
−
#endif /* USART3 */+
−
#if defined(USART6)+
−
  else if (USARTx == USART6)+
−
  {+
−
    /* Force reset of USART clock */+
−
    LL_APB2_GRP1_ForceReset(LL_APB2_GRP1_PERIPH_USART6);+
−
+
−
    /* Release reset of USART clock */+
−
    LL_APB2_GRP1_ReleaseReset(LL_APB2_GRP1_PERIPH_USART6);+
−
  }+
−
#endif /* USART6 */+
−
#if defined(UART4)+
−
  else if (USARTx == UART4)+
−
  {+
−
    /* Force reset of UART clock */+
−
    LL_APB1_GRP1_ForceReset(LL_APB1_GRP1_PERIPH_UART4);+
−
+
−
    /* Release reset of UART clock */+
−
    LL_APB1_GRP1_ReleaseReset(LL_APB1_GRP1_PERIPH_UART4);+
−
  }+
−
#endif /* UART4 */+
−
#if defined(UART5)+
−
  else if (USARTx == UART5)+
−
  {+
−
    /* Force reset of UART clock */+
−
    LL_APB1_GRP1_ForceReset(LL_APB1_GRP1_PERIPH_UART5);+
−
+
−
    /* Release reset of UART clock */+
−
    LL_APB1_GRP1_ReleaseReset(LL_APB1_GRP1_PERIPH_UART5);+
−
  }+
−
#endif /* UART5 */+
−
#if defined(UART7)+
−
  else if (USARTx == UART7)+
−
  {+
−
    /* Force reset of UART clock */+
−
    LL_APB1_GRP1_ForceReset(LL_APB1_GRP1_PERIPH_UART7);+
−
+
−
    /* Release reset of UART clock */+
−
    LL_APB1_GRP1_ReleaseReset(LL_APB1_GRP1_PERIPH_UART7);+
−
  }+
−
#endif /* UART7 */+
−
#if defined(UART8)+
−
  else if (USARTx == UART8)+
−
  {+
−
    /* Force reset of UART clock */+
−
    LL_APB1_GRP1_ForceReset(LL_APB1_GRP1_PERIPH_UART8);+
−
+
−
    /* Release reset of UART clock */+
−
    LL_APB1_GRP1_ReleaseReset(LL_APB1_GRP1_PERIPH_UART8);+
−
  }+
−
#endif /* UART8 */+
−
#if defined(UART9)+
−
  else if (USARTx == UART9)+
−
  {+
−
    /* Force reset of UART clock */+
−
    LL_APB2_GRP1_ForceReset(LL_APB2_GRP1_PERIPH_UART9);+
−
+
−
    /* Release reset of UART clock */+
−
    LL_APB2_GRP1_ReleaseReset(LL_APB2_GRP1_PERIPH_UART9);+
−
  }+
−
#endif /* UART9 */+
−
#if defined(UART10)+
−
  else if (USARTx == UART10)+
−
  {+
−
    /* Force reset of UART clock */+
−
    LL_APB2_GRP1_ForceReset(LL_APB2_GRP1_PERIPH_UART10);+
−
+
−
    /* Release reset of UART clock */+
−
    LL_APB2_GRP1_ReleaseReset(LL_APB2_GRP1_PERIPH_UART10);+
−
  }+
−
#endif /* UART10 */+
−
  else+
−
  {+
−
    status = ERROR;+
−
  }+
−
+
−
  return (status);+
−
}+
−
+
−
/**+
−
  * @brief  Initialize USART registers according to the specified+
−
  *         parameters in USART_InitStruct.+
−
  * @note   As some bits in USART configuration registers can only be written when the USART is disabled (USART_CR1_UE bit =0),+
−
  *         USART IP should be in disabled state prior calling this function. Otherwise, ERROR result will be returned.+
−
  * @note   Baud rate value stored in USART_InitStruct BaudRate field, should be valid (different from 0).+
−
  * @param  USARTx USART Instance+
−
  * @param  USART_InitStruct pointer to a LL_USART_InitTypeDef structure+
−
  *         that contains the configuration information for the specified USART peripheral.+
−
  * @retval An ErrorStatus enumeration value:+
−
  *          - SUCCESS: USART registers are initialized according to USART_InitStruct content+
−
  *          - ERROR: Problem occurred during USART Registers initialization+
−
  */+
−
ErrorStatus LL_USART_Init(USART_TypeDef *USARTx, LL_USART_InitTypeDef *USART_InitStruct)+
−
{+
−
  ErrorStatus status = ERROR;+
−
  uint32_t periphclk = LL_RCC_PERIPH_FREQUENCY_NO;+
−
  LL_RCC_ClocksTypeDef rcc_clocks;+
−
+
−
  /* Check the parameters */+
−
  assert_param(IS_UART_INSTANCE(USARTx));+
−
  assert_param(IS_LL_USART_BAUDRATE(USART_InitStruct->BaudRate));+
−
  assert_param(IS_LL_USART_DATAWIDTH(USART_InitStruct->DataWidth));+
−
  assert_param(IS_LL_USART_STOPBITS(USART_InitStruct->StopBits));+
−
  assert_param(IS_LL_USART_PARITY(USART_InitStruct->Parity));+
−
  assert_param(IS_LL_USART_DIRECTION(USART_InitStruct->TransferDirection));+
−
  assert_param(IS_LL_USART_HWCONTROL(USART_InitStruct->HardwareFlowControl));+
−
  assert_param(IS_LL_USART_OVERSAMPLING(USART_InitStruct->OverSampling));+
−
+
−
  /* USART needs to be in disabled state, in order to be able to configure some bits in+
−
     CRx registers */+
−
  if (LL_USART_IsEnabled(USARTx) == 0U)+
−
  {+
−
    /*---------------------------- USART CR1 Configuration -----------------------+
−
     * Configure USARTx CR1 (USART Word Length, Parity, Mode and Oversampling bits) with parameters:+
−
     * - DataWidth:          USART_CR1_M bits according to USART_InitStruct->DataWidth value+
−
     * - Parity:             USART_CR1_PCE, USART_CR1_PS bits according to USART_InitStruct->Parity value+
−
     * - TransferDirection:  USART_CR1_TE, USART_CR1_RE bits according to USART_InitStruct->TransferDirection value+
−
     * - Oversampling:       USART_CR1_OVER8 bit according to USART_InitStruct->OverSampling value.+
−
     */+
−
    MODIFY_REG(USARTx->CR1,+
−
               (USART_CR1_M | USART_CR1_PCE | USART_CR1_PS |+
−
                USART_CR1_TE | USART_CR1_RE | USART_CR1_OVER8),+
−
               (USART_InitStruct->DataWidth | USART_InitStruct->Parity |+
−
                USART_InitStruct->TransferDirection | USART_InitStruct->OverSampling));+
−
+
−
    /*---------------------------- USART CR2 Configuration -----------------------+
−
     * Configure USARTx CR2 (Stop bits) with parameters:+
−
     * - Stop Bits:          USART_CR2_STOP bits according to USART_InitStruct->StopBits value.+
−
     * - CLKEN, CPOL, CPHA and LBCL bits are to be configured using LL_USART_ClockInit().+
−
     */+
−
    LL_USART_SetStopBitsLength(USARTx, USART_InitStruct->StopBits);+
−
+
−
    /*---------------------------- USART CR3 Configuration -----------------------+
−
     * Configure USARTx CR3 (Hardware Flow Control) with parameters:+
−
     * - HardwareFlowControl: USART_CR3_RTSE, USART_CR3_CTSE bits according to USART_InitStruct->HardwareFlowControl value.+
−
     */+
−
    LL_USART_SetHWFlowCtrl(USARTx, USART_InitStruct->HardwareFlowControl);+
−
+
−
    /*---------------------------- USART BRR Configuration -----------------------+
−
     * Retrieve Clock frequency used for USART Peripheral+
−
     */+
−
    LL_RCC_GetSystemClocksFreq(&rcc_clocks);+
−
    if (USARTx == USART1)+
−
    {+
−
      periphclk = rcc_clocks.PCLK2_Frequency;+
−
    }+
−
    else if (USARTx == USART2)+
−
    {+
−
      periphclk = rcc_clocks.PCLK1_Frequency;+
−
    }+
−
#if defined(USART3)+
−
    else if (USARTx == USART3)+
−
    {+
−
      periphclk = rcc_clocks.PCLK1_Frequency;+
−
    }+
−
#endif /* USART3 */+
−
#if defined(USART6)+
−
    else if (USARTx == USART6)+
−
    {+
−
      periphclk = rcc_clocks.PCLK2_Frequency;+
−
    }+
−
#endif /* USART6 */+
−
#if defined(UART4)+
−
    else if (USARTx == UART4)+
−
    {+
−
      periphclk = rcc_clocks.PCLK1_Frequency;+
−
    }+
−
#endif /* UART4 */+
−
#if defined(UART5)+
−
    else if (USARTx == UART5)+
−
    {+
−
      periphclk = rcc_clocks.PCLK1_Frequency;+
−
    }+
−
#endif /* UART5 */+
−
#if defined(UART7)+
−
    else if (USARTx == UART7)+
−
    {+
−
      periphclk = rcc_clocks.PCLK1_Frequency;+
−
    }+
−
#endif /* UART7 */+
−
#if defined(UART8)+
−
    else if (USARTx == UART8)+
−
    {+
−
      periphclk = rcc_clocks.PCLK1_Frequency;+
−
    }+
−
#endif /* UART8 */+
−
#if defined(UART9)+
−
    else if (USARTx == UART9)+
−
    {+
−
      periphclk = rcc_clocks.PCLK1_Frequency;+
−
    }+
−
#endif /* UART9 */+
−
#if defined(UART10)+
−
    else if (USARTx == UART10)+
−
    {+
−
      periphclk = rcc_clocks.PCLK1_Frequency;+
−
    }+
−
#endif /* UART10 */+
−
    else+
−
    {+
−
      /* Nothing to do, as error code is already assigned to ERROR value */+
−
    }+
−
+
−
    /* Configure the USART Baud Rate :+
−
       - valid baud rate value (different from 0) is required+
−
       - Peripheral clock as returned by RCC service, should be valid (different from 0).+
−
    */+
−
    if ((periphclk != LL_RCC_PERIPH_FREQUENCY_NO)+
−
        && (USART_InitStruct->BaudRate != 0U))+
−
    {+
−
      status = SUCCESS;+
−
      LL_USART_SetBaudRate(USARTx,+
−
                           periphclk,+
−
                           USART_InitStruct->OverSampling,+
−
                           USART_InitStruct->BaudRate);+
−
+
−
      /* Check BRR is greater than or equal to 16d */+
−
      assert_param(IS_LL_USART_BRR_MIN(USARTx->BRR));+
−
+
−
      /* Check BRR is greater than or equal to 16d */+
−
      assert_param(IS_LL_USART_BRR_MAX(USARTx->BRR));+
−
    }+
−
  }+
−
  /* Endif (=> USART not in Disabled state => return ERROR) */+
−
+
−
  return (status);+
−
}+
−
+
−
/**+
−
  * @brief Set each @ref LL_USART_InitTypeDef field to default value.+
−
  * @param USART_InitStruct pointer to a @ref LL_USART_InitTypeDef structure+
−
  *                          whose fields will be set to default values.+
−
  * @retval None+
−
  */+
−
+
−
void LL_USART_StructInit(LL_USART_InitTypeDef *USART_InitStruct)+
−
{+
−
  /* Set USART_InitStruct fields to default values */+
−
  USART_InitStruct->BaudRate            = 9600U;+
−
  USART_InitStruct->DataWidth           = LL_USART_DATAWIDTH_8B;+
−
  USART_InitStruct->StopBits            = LL_USART_STOPBITS_1;+
−
  USART_InitStruct->Parity              = LL_USART_PARITY_NONE ;+
−
  USART_InitStruct->TransferDirection   = LL_USART_DIRECTION_TX_RX;+
−
  USART_InitStruct->HardwareFlowControl = LL_USART_HWCONTROL_NONE;+
−
  USART_InitStruct->OverSampling        = LL_USART_OVERSAMPLING_16;+
−
}+
−
+
−
/**+
−
  * @brief  Initialize USART Clock related settings according to the+
−
  *         specified parameters in the USART_ClockInitStruct.+
−
  * @note   As some bits in USART configuration registers can only be written when the USART is disabled (USART_CR1_UE bit =0),+
−
  *         USART IP should be in disabled state prior calling this function. Otherwise, ERROR result will be returned.+
−
  * @param  USARTx USART Instance+
−
  * @param  USART_ClockInitStruct pointer to a @ref LL_USART_ClockInitTypeDef structure+
−
  *         that contains the Clock configuration information for the specified USART peripheral.+
−
  * @retval An ErrorStatus enumeration value:+
−
  *          - SUCCESS: USART registers related to Clock settings are initialized according to USART_ClockInitStruct content+
−
  *          - ERROR: Problem occurred during USART Registers initialization+
−
  */+
−
ErrorStatus LL_USART_ClockInit(USART_TypeDef *USARTx, LL_USART_ClockInitTypeDef *USART_ClockInitStruct)+
−
{+
−
  ErrorStatus status = SUCCESS;+
−
+
−
  /* Check USART Instance and Clock signal output parameters */+
−
  assert_param(IS_UART_INSTANCE(USARTx));+
−
  assert_param(IS_LL_USART_CLOCKOUTPUT(USART_ClockInitStruct->ClockOutput));+
−
+
−
  /* USART needs to be in disabled state, in order to be able to configure some bits in+
−
     CRx registers */+
−
  if (LL_USART_IsEnabled(USARTx) == 0U)+
−
  {+
−
    /*---------------------------- USART CR2 Configuration -----------------------*/+
−
    /* If Clock signal has to be output */+
−
    if (USART_ClockInitStruct->ClockOutput == LL_USART_CLOCK_DISABLE)+
−
    {+
−
      /* Deactivate Clock signal delivery :+
−
       * - Disable Clock Output:        USART_CR2_CLKEN cleared+
−
       */+
−
      LL_USART_DisableSCLKOutput(USARTx);+
−
    }+
−
    else+
−
    {+
−
      /* Ensure USART instance is USART capable */+
−
      assert_param(IS_USART_INSTANCE(USARTx));+
−
+
−
      /* Check clock related parameters */+
−
      assert_param(IS_LL_USART_CLOCKPOLARITY(USART_ClockInitStruct->ClockPolarity));+
−
      assert_param(IS_LL_USART_CLOCKPHASE(USART_ClockInitStruct->ClockPhase));+
−
      assert_param(IS_LL_USART_LASTBITCLKOUTPUT(USART_ClockInitStruct->LastBitClockPulse));+
−
+
−
      /*---------------------------- USART CR2 Configuration -----------------------+
−
       * Configure USARTx CR2 (Clock signal related bits) with parameters:+
−
       * - Enable Clock Output:         USART_CR2_CLKEN set+
−
       * - Clock Polarity:              USART_CR2_CPOL bit according to USART_ClockInitStruct->ClockPolarity value+
−
       * - Clock Phase:                 USART_CR2_CPHA bit according to USART_ClockInitStruct->ClockPhase value+
−
       * - Last Bit Clock Pulse Output: USART_CR2_LBCL bit according to USART_ClockInitStruct->LastBitClockPulse value.+
−
       */+
−
      MODIFY_REG(USARTx->CR2,+
−
                 USART_CR2_CLKEN | USART_CR2_CPHA | USART_CR2_CPOL | USART_CR2_LBCL,+
−
                 USART_CR2_CLKEN | USART_ClockInitStruct->ClockPolarity |+
−
                 USART_ClockInitStruct->ClockPhase | USART_ClockInitStruct->LastBitClockPulse);+
−
    }+
−
  }+
−
  /* Else (USART not in Disabled state => return ERROR */+
−
  else+
−
  {+
−
    status = ERROR;+
−
  }+
−
+
−
  return (status);+
−
}+
−
+
−
/**+
−
  * @brief Set each field of a @ref LL_USART_ClockInitTypeDef type structure to default value.+
−
  * @param USART_ClockInitStruct pointer to a @ref LL_USART_ClockInitTypeDef structure+
−
  *                               whose fields will be set to default values.+
−
  * @retval None+
−
  */+
−
void LL_USART_ClockStructInit(LL_USART_ClockInitTypeDef *USART_ClockInitStruct)+
−
{+
−
  /* Set LL_USART_ClockInitStruct fields with default values */+
−
  USART_ClockInitStruct->ClockOutput       = LL_USART_CLOCK_DISABLE;+
−
  USART_ClockInitStruct->ClockPolarity     = LL_USART_POLARITY_LOW;            /* Not relevant when ClockOutput = LL_USART_CLOCK_DISABLE */+
−
  USART_ClockInitStruct->ClockPhase        = LL_USART_PHASE_1EDGE;             /* Not relevant when ClockOutput = LL_USART_CLOCK_DISABLE */+
−
  USART_ClockInitStruct->LastBitClockPulse = LL_USART_LASTCLKPULSE_NO_OUTPUT;  /* Not relevant when ClockOutput = LL_USART_CLOCK_DISABLE */+
−
}+
−
+
−
/**+
−
  * @}+
−
  */+
−
+
−
/**+
−
  * @}+
−
  */+
−
+
−
/**+
−
  * @}+
−
  */+
−
+
−
#endif /* USART1 || USART2 || USART3 || USART6 || UART4 || UART5 || UART7 || UART8 || UART9 || UART10 */+
−
+
−
/**+
−
  * @}+
−
  */+
−
+
−
#endif /* USE_FULL_LL_DRIVER */+
−
+
−
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/+
−
+
−