lib/main/STM32H7/Drivers/STM32H7xx_HAL_Driver/Src/stm32h7xx_ll_usart.c

   1 /**
   2   ******************************************************************************
   3   * @file    stm32h7xx_ll_usart.c
   4   * @author  MCD Application Team
   5   * @brief   USART LL module driver.
   6   ******************************************************************************
   7   * @attention
   8   *
   9   * <h2><center>&copy; Copyright (c) 2017 STMicroelectronics.
  10   * All rights reserved.</center></h2>
  11   *
  12   * This software component is licensed by ST under BSD 3-Clause license,
  13   * the "License"; You may not use this file except in compliance with the
  14   * License. You may obtain a copy of the License at:
  15   *                        opensource.org/licenses/BSD-3-Clause
  16   *
  17   ******************************************************************************
  18   */
  19 #if defined(USE_FULL_LL_DRIVER)
  20
  21 /* Includes ------------------------------------------------------------------*/
  22 #include "stm32h7xx_ll_usart.h"
  23 #include "stm32h7xx_ll_rcc.h"
  24 #include "stm32h7xx_ll_bus.h"
  25 #ifdef USE_FULL_ASSERT
  26 #include "stm32_assert.h"
  27 #else
  28 #define assert_param(expr) ((void)0U)
  29 #endif /* USE_FULL_ASSERT */
  30
  31 /** @addtogroup STM32H7xx_LL_Driver
  32   * @{
  33   */
  34
  35 #if defined (USART1) || defined (USART2) || defined (USART3) || defined (USART6) || defined (UART4) || defined (UART5) || defined (UART7) || defined (UART8) || defined (UART9) || defined (USART10)
  36
  37 /** @addtogroup USART_LL
  38   * @{
  39   */
  40
  41 /* Private types -------------------------------------------------------------*/
  42 /* Private variables ---------------------------------------------------------*/
  43 /* Private constants ---------------------------------------------------------*/
  44 /* Private macros ------------------------------------------------------------*/
  45 /** @addtogroup USART_LL_Private_Macros
  46   * @{
  47   */
  48
  49 #define IS_LL_USART_PRESCALER(__VALUE__)  (((__VALUE__) == LL_USART_PRESCALER_DIV1) \
  50                                            || ((__VALUE__) == LL_USART_PRESCALER_DIV2) \
  51                                            || ((__VALUE__) == LL_USART_PRESCALER_DIV4) \
  52                                            || ((__VALUE__) == LL_USART_PRESCALER_DIV6) \
  53                                            || ((__VALUE__) == LL_USART_PRESCALER_DIV8) \
  54                                            || ((__VALUE__) == LL_USART_PRESCALER_DIV10) \
  55                                            || ((__VALUE__) == LL_USART_PRESCALER_DIV12) \
  56                                            || ((__VALUE__) == LL_USART_PRESCALER_DIV16) \
  57                                            || ((__VALUE__) == LL_USART_PRESCALER_DIV32) \
  58                                            || ((__VALUE__) == LL_USART_PRESCALER_DIV64) \
  59                                            || ((__VALUE__) == LL_USART_PRESCALER_DIV128) \
  60                                            || ((__VALUE__) == LL_USART_PRESCALER_DIV256))
  61
  62 /* __BAUDRATE__ The maximum Baud Rate is derived from the maximum clock available
  63  *              divided by the smallest oversampling used on the USART (i.e. 8)    */
  64 #define IS_LL_USART_BAUDRATE(__BAUDRATE__) ((__BAUDRATE__) <= 12500000U)
  65
  66 /* __VALUE__ In case of oversampling by 16 and 8, BRR content must be greater than or equal to 16d. */
  67 #define IS_LL_USART_BRR_MIN(__VALUE__) ((__VALUE__) >= 16U)
  68
  69 /* __VALUE__ BRR content must be lower than or equal to 0xFFFF. */
  70 #define IS_LL_USART_BRR_MAX(__VALUE__) ((__VALUE__) <= 0x0000FFFFU)
  71
  72 #define IS_LL_USART_DIRECTION(__VALUE__) (((__VALUE__) == LL_USART_DIRECTION_NONE) \
  73                                           || ((__VALUE__) == LL_USART_DIRECTION_RX) \
  74                                           || ((__VALUE__) == LL_USART_DIRECTION_TX) \
  75                                           || ((__VALUE__) == LL_USART_DIRECTION_TX_RX))
  76
  77 #define IS_LL_USART_PARITY(__VALUE__) (((__VALUE__) == LL_USART_PARITY_NONE) \
  78                                        || ((__VALUE__) == LL_USART_PARITY_EVEN) \
  79                                        || ((__VALUE__) == LL_USART_PARITY_ODD))
  80
  81 #define IS_LL_USART_DATAWIDTH(__VALUE__) (((__VALUE__) == LL_USART_DATAWIDTH_7B) \
  82                                           || ((__VALUE__) == LL_USART_DATAWIDTH_8B) \
  83                                           || ((__VALUE__) == LL_USART_DATAWIDTH_9B))
  84
  85 #define IS_LL_USART_OVERSAMPLING(__VALUE__) (((__VALUE__) == LL_USART_OVERSAMPLING_16) \
  86                                              || ((__VALUE__) == LL_USART_OVERSAMPLING_8))
  87
  88 #define IS_LL_USART_LASTBITCLKOUTPUT(__VALUE__) (((__VALUE__) == LL_USART_LASTCLKPULSE_NO_OUTPUT) \
  89                                                  || ((__VALUE__) == LL_USART_LASTCLKPULSE_OUTPUT))
  90
  91 #define IS_LL_USART_CLOCKPHASE(__VALUE__) (((__VALUE__) == LL_USART_PHASE_1EDGE) \
  92                                            || ((__VALUE__) == LL_USART_PHASE_2EDGE))
  93
  94 #define IS_LL_USART_CLOCKPOLARITY(__VALUE__) (((__VALUE__) == LL_USART_POLARITY_LOW) \
  95                                               || ((__VALUE__) == LL_USART_POLARITY_HIGH))
  96
  97 #define IS_LL_USART_CLOCKOUTPUT(__VALUE__) (((__VALUE__) == LL_USART_CLOCK_DISABLE) \
  98                                             || ((__VALUE__) == LL_USART_CLOCK_ENABLE))
  99
 100 #define IS_LL_USART_STOPBITS(__VALUE__) (((__VALUE__) == LL_USART_STOPBITS_0_5) \
 101                                          || ((__VALUE__) == LL_USART_STOPBITS_1) \
 102                                          || ((__VALUE__) == LL_USART_STOPBITS_1_5) \
 103                                          || ((__VALUE__) == LL_USART_STOPBITS_2))
 104
 105 #define IS_LL_USART_HWCONTROL(__VALUE__) (((__VALUE__) == LL_USART_HWCONTROL_NONE) \
 106                                           || ((__VALUE__) == LL_USART_HWCONTROL_RTS) \
 107                                           || ((__VALUE__) == LL_USART_HWCONTROL_CTS) \
 108                                           || ((__VALUE__) == LL_USART_HWCONTROL_RTS_CTS))
 109
 110 /**
 111   * @}
 112   */
 113
 114 /* Private function prototypes -----------------------------------------------*/
 115
 116 /* Exported functions --------------------------------------------------------*/
 117 /** @addtogroup USART_LL_Exported_Functions
 118   * @{
 119   */
 120
 121 /** @addtogroup USART_LL_EF_Init
 122   * @{
 123   */
 124
 125 /**
 126   * @brief  De-initialize USART registers (Registers restored to their default values).
 127   * @param  USARTx USART Instance
 128   * @retval An ErrorStatus enumeration value:
 129   *          - SUCCESS: USART registers are de-initialized
 130   *          - ERROR: USART registers are not de-initialized
 131   */
 132 ErrorStatus LL_USART_DeInit(USART_TypeDef *USARTx)
 133 {
 134   ErrorStatus status = SUCCESS;
 135
 136   /* Check the parameters */
 137   assert_param(IS_UART_INSTANCE(USARTx));
 138
 139   if (USARTx == USART1)
 140   {
 141     /* Force reset of USART clock */
 142     LL_APB2_GRP1_ForceReset(LL_APB2_GRP1_PERIPH_USART1);
 143
 144     /* Release reset of USART clock */
 145     LL_APB2_GRP1_ReleaseReset(LL_APB2_GRP1_PERIPH_USART1);
 146   }
 147   else if (USARTx == USART2)
 148   {
 149     /* Force reset of USART clock */
 150     LL_APB1_GRP1_ForceReset(LL_APB1_GRP1_PERIPH_USART2);
 151
 152     /* Release reset of USART clock */
 153     LL_APB1_GRP1_ReleaseReset(LL_APB1_GRP1_PERIPH_USART2);
 154   }
 155   else if (USARTx == USART3)
 156   {
 157     /* Force reset of USART clock */
 158     LL_APB1_GRP1_ForceReset(LL_APB1_GRP1_PERIPH_USART3);
 159
 160     /* Release reset of USART clock */
 161     LL_APB1_GRP1_ReleaseReset(LL_APB1_GRP1_PERIPH_USART3);
 162   }
 163   else if (USARTx == UART4)
 164   {
 165     /* Force reset of UART clock */
 166     LL_APB1_GRP1_ForceReset(LL_APB1_GRP1_PERIPH_UART4);
 167
 168     /* Release reset of UART clock */
 169     LL_APB1_GRP1_ReleaseReset(LL_APB1_GRP1_PERIPH_UART4);
 170   }
 171   else if (USARTx == UART5)
 172   {
 173     /* Force reset of UART clock */
 174     LL_APB1_GRP1_ForceReset(LL_APB1_GRP1_PERIPH_UART5);
 175
 176     /* Release reset of UART clock */
 177     LL_APB1_GRP1_ReleaseReset(LL_APB1_GRP1_PERIPH_UART5);
 178   }
 179   else if (USARTx == USART6)
 180   {
 181     /* Force reset of USART clock */
 182     LL_APB2_GRP1_ForceReset(LL_APB2_GRP1_PERIPH_USART6);
 183
 184     /* Release reset of USART clock */
 185     LL_APB2_GRP1_ReleaseReset(LL_APB2_GRP1_PERIPH_USART6);
 186   }
 187   else if (USARTx == UART7)
 188   {
 189     /* Force reset of UART clock */
 190     LL_APB1_GRP1_ForceReset(LL_APB1_GRP1_PERIPH_UART7);
 191
 192     /* Release reset of UART clock */
 193     LL_APB1_GRP1_ReleaseReset(LL_APB1_GRP1_PERIPH_UART7);
 194   }
 195   else if (USARTx == UART8)
 196   {
 197     /* Force reset of UART clock */
 198     LL_APB1_GRP1_ForceReset(LL_APB1_GRP1_PERIPH_UART8);
 199
 200     /* Release reset of UART clock */
 201     LL_APB1_GRP1_ReleaseReset(LL_APB1_GRP1_PERIPH_UART8);
 202   }
 203 #if defined(UART9)
 204   else if (USARTx == UART9)
 205   {
 206     /* Force reset of UART clock */
 207     LL_APB2_GRP1_ForceReset(LL_APB2_GRP1_PERIPH_UART9);
 208
 209     /* Release reset of UART clock */
 210     LL_APB2_GRP1_ReleaseReset(LL_APB2_GRP1_PERIPH_UART9);
 211   }
 212 #endif /* UART9 */
 213 #if defined(USART10)
 214   else if (USARTx == USART10)
 215   {
 216     /* Force reset of USART clock */
 217     LL_APB2_GRP1_ForceReset(LL_APB2_GRP1_PERIPH_USART10);
 218
 219     /* Release reset of USART clock */
 220     LL_APB2_GRP1_ReleaseReset(LL_APB2_GRP1_PERIPH_USART10);
 221   }
 222 #endif /* USART10 */
 223   else
 224   {
 225     status = ERROR;
 226   }
 227
 228   return (status);
 229 }
 230
 231 /**
 232   * @brief  Initialize USART registers according to the specified
 233   *         parameters in USART_InitStruct.
 234   * @note   As some bits in USART configuration registers can only be written when the USART is disabled (USART_CR1_UE bit =0),
 235   *         USART Peripheral should be in disabled state prior calling this function. Otherwise, ERROR result will be returned.
 236   * @note   Baud rate value stored in USART_InitStruct BaudRate field, should be valid (different from 0).
 237   * @param  USARTx USART Instance
 238   * @param  USART_InitStruct pointer to a LL_USART_InitTypeDef structure
 239   *         that contains the configuration information for the specified USART peripheral.
 240   * @retval An ErrorStatus enumeration value:
 241   *          - SUCCESS: USART registers are initialized according to USART_InitStruct content
 242   *          - ERROR: Problem occurred during USART Registers initialization
 243   */
 244 ErrorStatus LL_USART_Init(USART_TypeDef *USARTx, LL_USART_InitTypeDef *USART_InitStruct)
 245 {
 246   ErrorStatus status = ERROR;
 247   uint32_t periphclk = LL_RCC_PERIPH_FREQUENCY_NO;
 248
 249   /* Check the parameters */
 250   assert_param(IS_UART_INSTANCE(USARTx));
 251   assert_param(IS_LL_USART_PRESCALER(USART_InitStruct->PrescalerValue));
 252   assert_param(IS_LL_USART_BAUDRATE(USART_InitStruct->BaudRate));
 253   assert_param(IS_LL_USART_DATAWIDTH(USART_InitStruct->DataWidth));
 254   assert_param(IS_LL_USART_STOPBITS(USART_InitStruct->StopBits));
 255   assert_param(IS_LL_USART_PARITY(USART_InitStruct->Parity));
 256   assert_param(IS_LL_USART_DIRECTION(USART_InitStruct->TransferDirection));
 257   assert_param(IS_LL_USART_HWCONTROL(USART_InitStruct->HardwareFlowControl));
 258   assert_param(IS_LL_USART_OVERSAMPLING(USART_InitStruct->OverSampling));
 259
 260   /* USART needs to be in disabled state, in order to be able to configure some bits in
 261      CRx registers */
 262   if (LL_USART_IsEnabled(USARTx) == 0U)
 263   {
 264     /*---------------------------- USART CR1 Configuration ---------------------
 265      * Configure USARTx CR1 (USART Word Length, Parity, Mode and Oversampling bits) with parameters:
 266      * - DataWidth:          USART_CR1_M bits according to USART_InitStruct->DataWidth value
 267      * - Parity:             USART_CR1_PCE, USART_CR1_PS bits according to USART_InitStruct->Parity value
 268      * - TransferDirection:  USART_CR1_TE, USART_CR1_RE bits according to USART_InitStruct->TransferDirection value
 269      * - Oversampling:       USART_CR1_OVER8 bit according to USART_InitStruct->OverSampling value.
 270      */
 271     MODIFY_REG(USARTx->CR1,
 272                (USART_CR1_M | USART_CR1_PCE | USART_CR1_PS |
 273                 USART_CR1_TE | USART_CR1_RE | USART_CR1_OVER8),
 274                (USART_InitStruct->DataWidth | USART_InitStruct->Parity |
 275                 USART_InitStruct->TransferDirection | USART_InitStruct->OverSampling));
 276
 277     /*---------------------------- USART CR2 Configuration ---------------------
 278      * Configure USARTx CR2 (Stop bits) with parameters:
 279      * - Stop Bits:          USART_CR2_STOP bits according to USART_InitStruct->StopBits value.
 280      * - CLKEN, CPOL, CPHA and LBCL bits are to be configured using LL_USART_ClockInit().
 281      */
 282     LL_USART_SetStopBitsLength(USARTx, USART_InitStruct->StopBits);
 283
 284     /*---------------------------- USART CR3 Configuration ---------------------
 285      * Configure USARTx CR3 (Hardware Flow Control) with parameters:
 286      * - HardwareFlowControl: USART_CR3_RTSE, USART_CR3_CTSE bits according to USART_InitStruct->HardwareFlowControl value.
 287      */
 288     LL_USART_SetHWFlowCtrl(USARTx, USART_InitStruct->HardwareFlowControl);
 289
 290     /*---------------------------- USART BRR Configuration ---------------------
 291      * Retrieve Clock frequency used for USART Peripheral
 292      */
 293     if (USARTx == USART1)
 294     {
 295       periphclk = LL_RCC_GetUSARTClockFreq(LL_RCC_USART16_CLKSOURCE);
 296     }
 297     else if (USARTx == USART2)
 298     {
 299       periphclk = LL_RCC_GetUSARTClockFreq(LL_RCC_USART234578_CLKSOURCE);
 300     }
 301     else if (USARTx == USART3)
 302     {
 303       periphclk = LL_RCC_GetUSARTClockFreq(LL_RCC_USART234578_CLKSOURCE);
 304     }
 305     else if (USARTx == UART4)
 306     {
 307       periphclk = LL_RCC_GetUSARTClockFreq(LL_RCC_USART234578_CLKSOURCE);
 308     }
 309     else if (USARTx == UART5)
 310     {
 311       periphclk = LL_RCC_GetUSARTClockFreq(LL_RCC_USART234578_CLKSOURCE);
 312     }
 313     else if (USARTx == USART6)
 314     {
 315       periphclk = LL_RCC_GetUSARTClockFreq(LL_RCC_USART16_CLKSOURCE);
 316     }
 317     else if (USARTx == UART7)
 318     {
 319       periphclk = LL_RCC_GetUSARTClockFreq(LL_RCC_USART234578_CLKSOURCE);
 320     }
 321     else if (USARTx == UART8)
 322     {
 323       periphclk = LL_RCC_GetUSARTClockFreq(LL_RCC_USART234578_CLKSOURCE);
 324     }
 325 #if defined(UART9)
 326     else if (USARTx == UART9)
 327     {
 328       periphclk = LL_RCC_GetUSARTClockFreq(LL_RCC_USART16_CLKSOURCE);
 329     }
 330 #endif /* UART9 */
 331 #if defined(USART10)
 332     else if (USARTx == USART10)
 333     {
 334       periphclk = LL_RCC_GetUSARTClockFreq(LL_RCC_USART16_CLKSOURCE);
 335     }
 336 #endif /* USART10 */
 337     else
 338     {
 339       /* Nothing to do, as error code is already assigned to ERROR value */
 340     }
 341
 342     /* Configure the USART Baud Rate :
 343        - prescaler value is required
 344        - valid baud rate value (different from 0) is required
 345        - Peripheral clock as returned by RCC service, should be valid (different from 0).
 346     */
 347     if ((periphclk != LL_RCC_PERIPH_FREQUENCY_NO)
 348         && (USART_InitStruct->BaudRate != 0U))
 349     {
 350       status = SUCCESS;
 351       LL_USART_SetBaudRate(USARTx,
 352                            periphclk,
 353                            USART_InitStruct->PrescalerValue,
 354                            USART_InitStruct->OverSampling,
 355                            USART_InitStruct->BaudRate);
 356
 357       /* Check BRR is greater than or equal to 16d */
 358       assert_param(IS_LL_USART_BRR_MIN(USARTx->BRR));
 359
 360       /* Check BRR is lower than or equal to 0xFFFF */
 361       assert_param(IS_LL_USART_BRR_MAX(USARTx->BRR));
 362     }
 363
 364     /*---------------------------- USART PRESC Configuration -----------------------
 365      * Configure USARTx PRESC (Prescaler) with parameters:
 366      * - PrescalerValue: USART_PRESC_PRESCALER bits according to USART_InitStruct->PrescalerValue value.
 367      */
 368     LL_USART_SetPrescaler(USARTx, USART_InitStruct->PrescalerValue);
 369   }
 370   /* Endif (=> USART not in Disabled state => return ERROR) */
 371
 372   return (status);
 373 }
 374
 375 /**
 376   * @brief Set each @ref LL_USART_InitTypeDef field to default value.
 377   * @param USART_InitStruct pointer to a @ref LL_USART_InitTypeDef structure
 378   *                         whose fields will be set to default values.
 379   * @retval None
 380   */
 381
 382 void LL_USART_StructInit(LL_USART_InitTypeDef *USART_InitStruct)
 383 {
 384   /* Set USART_InitStruct fields to default values */
 385   USART_InitStruct->PrescalerValue      = LL_USART_PRESCALER_DIV1;
 386   USART_InitStruct->BaudRate            = 9600U;
 387   USART_InitStruct->DataWidth           = LL_USART_DATAWIDTH_8B;
 388   USART_InitStruct->StopBits            = LL_USART_STOPBITS_1;
 389   USART_InitStruct->Parity              = LL_USART_PARITY_NONE ;
 390   USART_InitStruct->TransferDirection   = LL_USART_DIRECTION_TX_RX;
 391   USART_InitStruct->HardwareFlowControl = LL_USART_HWCONTROL_NONE;
 392   USART_InitStruct->OverSampling        = LL_USART_OVERSAMPLING_16;
 393 }
 394
 395 /**
 396   * @brief  Initialize USART Clock related settings according to the
 397   *         specified parameters in the USART_ClockInitStruct.
 398   * @note   As some bits in USART configuration registers can only be written when the USART is disabled (USART_CR1_UE bit =0),
 399   *         USART Peripheral should be in disabled state prior calling this function. Otherwise, ERROR result will be returned.
 400   * @param  USARTx USART Instance
 401   * @param  USART_ClockInitStruct pointer to a @ref LL_USART_ClockInitTypeDef structure
 402   *         that contains the Clock configuration information for the specified USART peripheral.
 403   * @retval An ErrorStatus enumeration value:
 404   *          - SUCCESS: USART registers related to Clock settings are initialized according to USART_ClockInitStruct content
 405   *          - ERROR: Problem occurred during USART Registers initialization
 406   */
 407 ErrorStatus LL_USART_ClockInit(USART_TypeDef *USARTx, LL_USART_ClockInitTypeDef *USART_ClockInitStruct)
 408 {
 409   ErrorStatus status = SUCCESS;
 410
 411   /* Check USART Instance and Clock signal output parameters */
 412   assert_param(IS_UART_INSTANCE(USARTx));
 413   assert_param(IS_LL_USART_CLOCKOUTPUT(USART_ClockInitStruct->ClockOutput));
 414
 415   /* USART needs to be in disabled state, in order to be able to configure some bits in
 416      CRx registers */
 417   if (LL_USART_IsEnabled(USARTx) == 0U)
 418   {
 419     /*---------------------------- USART CR2 Configuration -----------------------*/
 420     /* If Clock signal has to be output */
 421     if (USART_ClockInitStruct->ClockOutput == LL_USART_CLOCK_DISABLE)
 422     {
 423       /* Deactivate Clock signal delivery :
 424        * - Disable Clock Output:        USART_CR2_CLKEN cleared
 425        */
 426       LL_USART_DisableSCLKOutput(USARTx);
 427     }
 428     else
 429     {
 430       /* Ensure USART instance is USART capable */
 431       assert_param(IS_USART_INSTANCE(USARTx));
 432
 433       /* Check clock related parameters */
 434       assert_param(IS_LL_USART_CLOCKPOLARITY(USART_ClockInitStruct->ClockPolarity));
 435       assert_param(IS_LL_USART_CLOCKPHASE(USART_ClockInitStruct->ClockPhase));
 436       assert_param(IS_LL_USART_LASTBITCLKOUTPUT(USART_ClockInitStruct->LastBitClockPulse));
 437
 438       /*---------------------------- USART CR2 Configuration -----------------------
 439        * Configure USARTx CR2 (Clock signal related bits) with parameters:
 440        * - Enable Clock Output:         USART_CR2_CLKEN set
 441        * - Clock Polarity:              USART_CR2_CPOL bit according to USART_ClockInitStruct->ClockPolarity value
 442        * - Clock Phase:                 USART_CR2_CPHA bit according to USART_ClockInitStruct->ClockPhase value
 443        * - Last Bit Clock Pulse Output: USART_CR2_LBCL bit according to USART_ClockInitStruct->LastBitClockPulse value.
 444        */
 445       MODIFY_REG(USARTx->CR2,
 446                  USART_CR2_CLKEN | USART_CR2_CPHA | USART_CR2_CPOL | USART_CR2_LBCL,
 447                  USART_CR2_CLKEN | USART_ClockInitStruct->ClockPolarity |
 448                  USART_ClockInitStruct->ClockPhase | USART_ClockInitStruct->LastBitClockPulse);
 449     }
 450   }
 451   /* Else (USART not in Disabled state => return ERROR */
 452   else
 453   {
 454     status = ERROR;
 455   }
 456
 457   return (status);
 458 }
 459
 460 /**
 461   * @brief Set each field of a @ref LL_USART_ClockInitTypeDef type structure to default value.
 462   * @param USART_ClockInitStruct pointer to a @ref LL_USART_ClockInitTypeDef structure
 463   *                              whose fields will be set to default values.
 464   * @retval None
 465   */
 466 void LL_USART_ClockStructInit(LL_USART_ClockInitTypeDef *USART_ClockInitStruct)
 467 {
 468   /* Set LL_USART_ClockInitStruct fields with default values */
 469   USART_ClockInitStruct->ClockOutput       = LL_USART_CLOCK_DISABLE;
 470   USART_ClockInitStruct->ClockPolarity     = LL_USART_POLARITY_LOW;            /* Not relevant when ClockOutput = LL_USART_CLOCK_DISABLE */
 471   USART_ClockInitStruct->ClockPhase        = LL_USART_PHASE_1EDGE;             /* Not relevant when ClockOutput = LL_USART_CLOCK_DISABLE */
 472   USART_ClockInitStruct->LastBitClockPulse = LL_USART_LASTCLKPULSE_NO_OUTPUT;  /* Not relevant when ClockOutput = LL_USART_CLOCK_DISABLE */
 473 }
 474
 475 /**
 476   * @}
 477   */
 478
 479 /**
 480   * @}
 481   */
 482
 483 /**
 484   * @}
 485   */
 486
 487 #endif /* USART1 || USART2 || USART3 || USART6 || UART4 || UART5 || UART7 || UART8 || UART9 || USART10 */
 488
 489 /**
 490   * @}
 491   */
 492
 493 #endif /* USE_FULL_LL_DRIVER */
 494
 495 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
 496