tool/mbed/mbed-sdk/libraries/mbed/targets/cmsis/TARGET_STM/TARGET_STM32F4/stm32f4xx_hal_usart.h

   1 /**
   2   ******************************************************************************
   3   * @file    stm32f4xx_hal_usart.h
   4   * @author  MCD Application Team
   5   * @version V1.1.0
   6   * @date    19-June-2014
   7   * @brief   Header file of USART HAL module.
   8   ******************************************************************************
   9   * @attention
  10   *
  11   * <h2><center>&copy; COPYRIGHT(c) 2014 STMicroelectronics</center></h2>
  12   *
  13   * Redistribution and use in source and binary forms, with or without modification,
  14   * are permitted provided that the following conditions are met:
  15   *   1. Redistributions of source code must retain the above copyright notice,
  16   *      this list of conditions and the following disclaimer.
  17   *   2. Redistributions in binary form must reproduce the above copyright notice,
  18   *      this list of conditions and the following disclaimer in the documentation
  19   *      and/or other materials provided with the distribution.
  20   *   3. Neither the name of STMicroelectronics nor the names of its contributors
  21   *      may be used to endorse or promote products derived from this software
  22   *      without specific prior written permission.
  23   *
  24   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  25   * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  26   * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  27   * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
  28   * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  29   * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  30   * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
  31   * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  32   * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  33   * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  34   *
  35   ******************************************************************************
  36   */
  37
  38 /* Define to prevent recursive inclusion -------------------------------------*/
  39 #ifndef __STM32F4xx_HAL_USART_H
  40 #define __STM32F4xx_HAL_USART_H
  41
  42 #ifdef __cplusplus
  43  extern "C" {
  44 #endif
  45
  46 /* Includes ------------------------------------------------------------------*/
  47 #include "stm32f4xx_hal_def.h"
  48
  49 /** @addtogroup STM32F4xx_HAL_Driver
  50   * @{
  51   */
  52
  53 /** @addtogroup USART
  54   * @{
  55   */
  56
  57 /* Exported types ------------------------------------------------------------*/
  58 /**
  59   * @brief USART Init Structure definition
  60   */
  61 typedef struct
  62 {
  63   uint32_t BaudRate;                  /*!< This member configures the Usart communication baud rate.
  64                                            The baud rate is computed using the following formula:
  65                                            - IntegerDivider = ((PCLKx) / (8 * (husart->Init.BaudRate)))
  66                                            - FractionalDivider = ((IntegerDivider - ((uint32_t) IntegerDivider)) * 8) + 0.5 */
  67
  68   uint32_t WordLength;                /*!< Specifies the number of data bits transmitted or received in a frame.
  69                                            This parameter can be a value of @ref USART_Word_Length */
  70
  71   uint32_t StopBits;                  /*!< Specifies the number of stop bits transmitted.
  72                                            This parameter can be a value of @ref USART_Stop_Bits */
  73
  74   uint32_t Parity;                   /*!< Specifies the parity mode.
  75                                            This parameter can be a value of @ref USART_Parity
  76                                            @note When parity is enabled, the computed parity is inserted
  77                                                  at the MSB position of the transmitted data (9th bit when
  78                                                  the word length is set to 9 data bits; 8th bit when the
  79                                                  word length is set to 8 data bits). */
  80
  81   uint32_t Mode;                      /*!< Specifies wether the Receive or Transmit mode is enabled or disabled.
  82                                            This parameter can be a value of @ref USART_Mode */
  83
  84   uint32_t CLKPolarity;               /*!< Specifies the steady state of the serial clock.
  85                                            This parameter can be a value of @ref USART_Clock_Polarity */
  86
  87   uint32_t CLKPhase;                  /*!< Specifies the clock transition on which the bit capture is made.
  88                                            This parameter can be a value of @ref USART_Clock_Phase */
  89
  90   uint32_t CLKLastBit;                /*!< Specifies whether the clock pulse corresponding to the last transmitted
  91                                            data bit (MSB) has to be output on the SCLK pin in synchronous mode.
  92                                            This parameter can be a value of @ref USART_Last_Bit */
  93 }USART_InitTypeDef;
  94
  95 /**
  96   * @brief HAL State structures definition
  97   */
  98 typedef enum
  99 {
 100   HAL_USART_STATE_RESET             = 0x00,    /*!< Peripheral is not yet Initialized   */
 101   HAL_USART_STATE_READY             = 0x01,    /*!< Peripheral Initialized and ready for use */
 102   HAL_USART_STATE_BUSY              = 0x02,    /*!< an internal process is ongoing */
 103   HAL_USART_STATE_BUSY_TX           = 0x12,    /*!< Data Transmission process is ongoing */
 104   HAL_USART_STATE_BUSY_RX           = 0x22,    /*!< Data Reception process is ongoing */
 105   HAL_USART_STATE_BUSY_TX_RX        = 0x32,    /*!< Data Transmission Reception process is ongoing */
 106   HAL_USART_STATE_TIMEOUT           = 0x03,    /*!< Timeout state */
 107   HAL_USART_STATE_ERROR             = 0x04     /*!< Error */
 108 }HAL_USART_StateTypeDef;
 109
 110 /**
 111   * @brief  HAL USART Error Code structure definition
 112   */
 113 typedef enum
 114 {
 115   HAL_USART_ERROR_NONE      = 0x00,    /*!< No error            */
 116   HAL_USART_ERROR_PE        = 0x01,    /*!< Parity error        */
 117   HAL_USART_ERROR_NE        = 0x02,    /*!< Noise error         */
 118   HAL_USART_ERROR_FE        = 0x04,    /*!< frame error         */
 119   HAL_USART_ERROR_ORE       = 0x08,    /*!< Overrun error       */
 120   HAL_USART_ERROR_DMA       = 0x10     /*!< DMA transfer error  */
 121 }HAL_USART_ErrorTypeDef;
 122
 123 /**
 124   * @brief  USART handle Structure definition
 125   */
 126 typedef struct
 127 {
 128   USART_TypeDef                 *Instance;        /* USART registers base address        */
 129
 130   USART_InitTypeDef             Init;             /* Usart communication parameters      */
 131
 132   uint8_t                       *pTxBuffPtr;      /* Pointer to Usart Tx transfer Buffer */
 133
 134   uint16_t                      TxXferSize;       /* Usart Tx Transfer size              */
 135
 136   __IO uint16_t                 TxXferCount;      /* Usart Tx Transfer Counter           */
 137
 138   uint8_t                       *pRxBuffPtr;      /* Pointer to Usart Rx transfer Buffer */
 139
 140   uint16_t                      RxXferSize;       /* Usart Rx Transfer size              */
 141
 142   __IO uint16_t                 RxXferCount;      /* Usart Rx Transfer Counter           */
 143
 144   DMA_HandleTypeDef             *hdmatx;          /* Usart Tx DMA Handle parameters      */
 145
 146   DMA_HandleTypeDef             *hdmarx;          /* Usart Rx DMA Handle parameters      */
 147
 148   HAL_LockTypeDef                Lock;            /* Locking object                      */
 149
 150   __IO HAL_USART_StateTypeDef    State;           /* Usart communication state           */
 151
 152   __IO HAL_USART_ErrorTypeDef    ErrorCode;        /* USART Error code                    */
 153
 154 }USART_HandleTypeDef;
 155
 156
 157 /* Exported constants --------------------------------------------------------*/
 158 /** @defgroup USART_Exported_Constants
 159   * @{
 160   */
 161
 162 /** @defgroup USART_Word_Length
 163   * @{
 164   */
 165 #define USART_WORDLENGTH_8B                  ((uint32_t)0x00000000)
 166 #define USART_WORDLENGTH_9B                  ((uint32_t)USART_CR1_M)
 167 #define IS_USART_WORD_LENGTH(LENGTH) (((LENGTH) == USART_WORDLENGTH_8B) || \
 168                                           ((LENGTH) == USART_WORDLENGTH_9B))
 169 /**
 170   * @}
 171   */
 172
 173 /** @defgroup USART_Stop_Bits
 174   * @{
 175   */
 176 #define USART_STOPBITS_1                     ((uint32_t)0x00000000)
 177 #define USART_STOPBITS_0_5                   ((uint32_t)USART_CR2_STOP_0)
 178 #define USART_STOPBITS_2                     ((uint32_t)USART_CR2_STOP_1)
 179 #define USART_STOPBITS_1_5                   ((uint32_t)(USART_CR2_STOP_0 | USART_CR2_STOP_1))
 180 #define IS_USART_STOPBITS(STOPBITS) (((STOPBITS) == USART_STOPBITS_1) || \
 181                                          ((STOPBITS) == USART_STOPBITS_0_5) || \
 182                                          ((STOPBITS) == USART_STOPBITS_1_5) || \
 183                                          ((STOPBITS) == USART_STOPBITS_2))
 184 /**
 185   * @}
 186   */
 187
 188 /** @defgroup USART_Parity
 189   * @{
 190   */
 191 #define USART_PARITY_NONE                    ((uint32_t)0x00000000)
 192 #define USART_PARITY_EVEN                    ((uint32_t)USART_CR1_PCE)
 193 #define USART_PARITY_ODD                     ((uint32_t)(USART_CR1_PCE | USART_CR1_PS))
 194 #define IS_USART_PARITY(PARITY) (((PARITY) == USART_PARITY_NONE) || \
 195                                      ((PARITY) == USART_PARITY_EVEN) || \
 196                                      ((PARITY) == USART_PARITY_ODD))
 197 /**
 198   * @}
 199   */
 200
 201 /** @defgroup USART_Mode
 202   * @{
 203   */
 204 #define USART_MODE_RX                        ((uint32_t)USART_CR1_RE)
 205 #define USART_MODE_TX                        ((uint32_t)USART_CR1_TE)
 206 #define USART_MODE_TX_RX                     ((uint32_t)(USART_CR1_TE |USART_CR1_RE))
 207 #define IS_USART_MODE(MODE) ((((MODE) & (uint32_t)0xFFF3) == 0x00) && ((MODE) != (uint32_t)0x00))
 208 /**
 209   * @}
 210   */
 211
 212 /** @defgroup USART_Clock
 213   * @{
 214   */
 215 #define USART_CLOCK_DISABLED                 ((uint32_t)0x00000000)
 216 #define USART_CLOCK_ENABLED                  ((uint32_t)USART_CR2_CLKEN)
 217 #define IS_USART_CLOCK(CLOCK) (((CLOCK) == USART_CLOCK_DISABLED) || \
 218                                    ((CLOCK) == USART_CLOCK_ENABLED))
 219 /**
 220   * @}
 221   */
 222
 223 /** @defgroup USART_Clock_Polarity
 224   * @{
 225   */
 226 #define USART_POLARITY_LOW                   ((uint32_t)0x00000000)
 227 #define USART_POLARITY_HIGH                  ((uint32_t)USART_CR2_CPOL)
 228 #define IS_USART_POLARITY(CPOL) (((CPOL) == USART_POLARITY_LOW) || ((CPOL) == USART_POLARITY_HIGH))
 229 /**
 230   * @}
 231   */
 232
 233 /** @defgroup USART_Clock_Phase
 234   * @{
 235   */
 236 #define USART_PHASE_1EDGE                    ((uint32_t)0x00000000)
 237 #define USART_PHASE_2EDGE                    ((uint32_t)USART_CR2_CPHA)
 238 #define IS_USART_PHASE(CPHA) (((CPHA) == USART_PHASE_1EDGE) || ((CPHA) == USART_PHASE_2EDGE))
 239 /**
 240   * @}
 241   */
 242
 243 /** @defgroup USART_Last_Bit
 244   * @{
 245   */
 246 #define USART_LASTBIT_DISABLE                ((uint32_t)0x00000000)
 247 #define USART_LASTBIT_ENABLE                 ((uint32_t)USART_CR2_LBCL)
 248 #define IS_USART_LASTBIT(LASTBIT) (((LASTBIT) == USART_LASTBIT_DISABLE) || \
 249                                        ((LASTBIT) == USART_LASTBIT_ENABLE))
 250 /**
 251   * @}
 252   */
 253
 254 /** @defgroup USART_NACK_State
 255   * @{
 256   */
 257 #define USARTNACK_ENABLED           ((uint32_t)USART_CR3_NACK)
 258 #define USARTNACK_DISABLED          ((uint32_t)0x00000000)
 259 #define IS_USART_NACK_STATE(NACK) (((NACK) == USARTNACK_ENABLED) || \
 260                                        ((NACK) == USARTNACK_DISABLED))
 261 /**
 262   * @}
 263   */
 264
 265 /** @defgroup USART_Flags
 266   *        Elements values convention: 0xXXXX
 267   *           - 0xXXXX  : Flag mask in the SR register
 268   * @{
 269   */
 270
 271 #define USART_FLAG_TXE                       ((uint32_t)0x00000080)
 272 #define USART_FLAG_TC                        ((uint32_t)0x00000040)
 273 #define USART_FLAG_RXNE                      ((uint32_t)0x00000020)
 274 #define USART_FLAG_IDLE                      ((uint32_t)0x00000010)
 275 #define USART_FLAG_ORE                       ((uint32_t)0x00000008)
 276 #define USART_FLAG_NE                        ((uint32_t)0x00000004)
 277 #define USART_FLAG_FE                        ((uint32_t)0x00000002)
 278 #define USART_FLAG_PE                        ((uint32_t)0x00000001)
 279 /**
 280   * @}
 281   */
 282
 283 /** @defgroup USART_Interrupt_definition
 284   *        Elements values convention: 0xY000XXXX
 285   *           - XXXX  : Interrupt mask in the XX register
 286   *           - Y  : Interrupt source register (2bits)
 287   *                 - 01: CR1 register
 288   *                 - 10: CR2 register
 289   *                 - 11: CR3 register
 290   *
 291   * @{
 292   */
 293 #define USART_IT_PE                          ((uint32_t)0x10000100)
 294 #define USART_IT_TXE                         ((uint32_t)0x10000080)
 295 #define USART_IT_TC                          ((uint32_t)0x10000040)
 296 #define USART_IT_RXNE                        ((uint32_t)0x10000020)
 297 #define USART_IT_IDLE                        ((uint32_t)0x10000010)
 298
 299 #define USART_IT_LBD                         ((uint32_t)0x20000040)
 300 #define USART_IT_CTS                         ((uint32_t)0x30000400)
 301
 302 #define USART_IT_ERR                         ((uint32_t)0x30000001)
 303
 304
 305 /**
 306   * @}
 307   */
 308
 309 /**
 310   * @}
 311   */
 312
 313 /* Exported macro ------------------------------------------------------------*/
 314 /** @brief Reset USART handle state
 315   * @param  __HANDLE__: specifies the USART Handle.
 316   *         This parameter can be USARTx where x: 1, 2, 3 or 6 to select the USART peripheral.
 317   * @retval None
 318   */
 319 #define __HAL_USART_RESET_HANDLE_STATE(__HANDLE__) ((__HANDLE__)->State = HAL_USART_STATE_RESET)
 320
 321 /** @brief  Checks whether the specified Smartcard flag is set or not.
 322   * @param  __HANDLE__: specifies the USART Handle.
 323   *         This parameter can be USARTx where x: 1, 2, 3 or 6 to select the USART peripheral.
 324   * @param  __FLAG__: specifies the flag to check.
 325   *        This parameter can be one of the following values:
 326   *            @arg USART_FLAG_TXE:  Transmit data register empty flag
 327   *            @arg USART_FLAG_TC:   Transmission Complete flag
 328   *            @arg USART_FLAG_RXNE: Receive data register not empty flag
 329   *            @arg USART_FLAG_IDLE: Idle Line detection flag
 330   *            @arg USART_FLAG_ORE:  OverRun Error flag
 331   *            @arg USART_FLAG_NE:   Noise Error flag
 332   *            @arg USART_FLAG_FE:   Framing Error flag
 333   *            @arg USART_FLAG_PE:   Parity Error flag
 334   * @retval The new state of __FLAG__ (TRUE or FALSE).
 335   */
 336
 337 #define __HAL_USART_GET_FLAG(__HANDLE__, __FLAG__) (((__HANDLE__)->Instance->SR & (__FLAG__)) == (__FLAG__))
 338
 339 /** @brief  Clears the specified Smartcard pending flags.
 340   * @param  __HANDLE__: specifies the USART Handle.
 341   *         This parameter can be USARTx where x: 1, 2, 3 or 6 to select the USART peripheral.
 342   * @param  __FLAG__: specifies the flag to check.
 343   *          This parameter can be any combination of the following values:
 344   *            @arg USART_FLAG_TC:   Transmission Complete flag.
 345   *            @arg USART_FLAG_RXNE: Receive data register not empty flag.
 346   *
 347   * @note   PE (Parity error), FE (Framing error), NE (Noise error), ORE (OverRun
 348   *          error) and IDLE (Idle line detected) flags are cleared by software
 349   *          sequence: a read operation to USART_SR register followed by a read
 350   *          operation to USART_DR register.
 351   * @note   RXNE flag can be also cleared by a read to the USART_DR register.
 352   * @note   TC flag can be also cleared by software sequence: a read operation to
 353   *          USART_SR register followed by a write operation to USART_DR register.
 354   * @note   TXE flag is cleared only by a write to the USART_DR register.
 355   *
 356   * @retval None
 357   */
 358 #define __HAL_USART_CLEAR_FLAG(__HANDLE__, __FLAG__) ((__HANDLE__)->Instance->SR = ~(__FLAG__))
 359
 360 /** @brief  Clear the USART PE pending flag.
 361   * @param  __HANDLE__: specifies the USART Handle.
 362   *         This parameter can be USARTx where x: 1, 2, 3 or 6 to select the USART peripheral.
 363   * @retval None
 364   */
 365 #define __HAL_USART_CLEAR_PEFLAG(__HANDLE__) do{(__HANDLE__)->Instance->SR;\
 366                                                 (__HANDLE__)->Instance->DR;}while(0)
 367 /** @brief  Clear the USART FE pending flag.
 368   * @param  __HANDLE__: specifies the USART Handle.
 369   *         This parameter can be USARTx where x: 1, 2, 3 or 6 to select the USART peripheral.
 370   * @retval None
 371   */
 372 #define __HAL_USART_CLEAR_FEFLAG(__HANDLE__) __HAL_USART_CLEAR_PEFLAG(__HANDLE__)
 373
 374 /** @brief  Clear the USART NE pending flag.
 375   * @param  __HANDLE__: specifies the USART Handle.
 376   *         This parameter can be USARTx where x: 1, 2, 3 or 6 to select the USART peripheral.
 377   * @retval None
 378   */
 379 #define __HAL_USART_CLEAR_NEFLAG(__HANDLE__) __HAL_USART_CLEAR_PEFLAG(__HANDLE__)
 380
 381 /** @brief  Clear the UART ORE pending flag.
 382   * @param  __HANDLE__: specifies the USART Handle.
 383   *         This parameter can be USARTx where x: 1, 2, 3 or 6 to select the USART peripheral.
 384   * @retval None
 385   */
 386 #define __HAL_USART_CLEAR_OREFLAG(__HANDLE__) __HAL_USART_CLEAR_PEFLAG(__HANDLE__)
 387
 388 /** @brief  Clear the USART IDLE pending flag.
 389   * @param  __HANDLE__: specifies the USART Handle.
 390   *         This parameter can be USARTx where x: 1, 2, 3 or 6 to select the USART peripheral.
 391   * @retval None
 392   */
 393 #define __HAL_USART_CLEAR_IDLEFLAG(__HANDLE__) __HAL_USART_CLEAR_PEFLAG(__HANDLE__)
 394
 395 /** @brief  Enables or disables the specified Usart interrupts.
 396   * @param  __HANDLE__: specifies the USART Handle.
 397   *         This parameter can be USARTx where x: 1, 2, 3 or 6 to select the USART peripheral.
 398   * @param  __INTERRUPT__: specifies the USART interrupt source to check.
 399   *          This parameter can be one of the following values:
 400   *            @arg USART_IT_TXE:  Transmit Data Register empty interrupt
 401   *            @arg USART_IT_TC:   Transmission complete interrupt
 402   *            @arg USART_IT_RXNE: Receive Data register not empty interrupt
 403   *            @arg USART_IT_IDLE: Idle line detection interrupt
 404   *            @arg USART_IT_PE:   Parity Error interrupt
 405   *            @arg USART_IT_ERR:  Error interrupt(Frame error, noise error, overrun error)
 406   * @param  NewState: new state of the specified Usart interrupt.
 407   *          This parameter can be: ENABLE or DISABLE.
 408   * @retval None
 409   */
 410 #define USART_IT_MASK  ((uint32_t)0x0000FFFF)
 411 #define __USART_ENABLE_IT(__HANDLE__, __INTERRUPT__)   ((((__INTERRUPT__) >> 28) == 1)? ((__HANDLE__)->Instance->CR1 |= ((__INTERRUPT__) & USART_IT_MASK)): \
 412                                                         (((__INTERRUPT__) >> 28) == 2)? ((__HANDLE__)->Instance->CR2 |=  ((__INTERRUPT__) & USART_IT_MASK)): \
 413                                                         ((__HANDLE__)->Instance->CR3 |= ((__INTERRUPT__) & USART_IT_MASK)))
 414 #define __USART_DISABLE_IT(__HANDLE__, __INTERRUPT__)  ((((__INTERRUPT__) >> 28) == 1)? ((__HANDLE__)->Instance->CR1 &= ~((__INTERRUPT__) & USART_IT_MASK)): \
 415                                                         (((__INTERRUPT__) >> 28) == 2)? ((__HANDLE__)->Instance->CR2 &= ~((__INTERRUPT__) & USART_IT_MASK)): \
 416                                                         ((__HANDLE__)->Instance->CR3 &= ~ ((__INTERRUPT__) & USART_IT_MASK)))
 417
 418
 419 /** @brief  Checks whether the specified Usart interrupt has occurred or not.
 420   * @param  __HANDLE__: specifies the USART Handle.
 421   *         This parameter can be USARTx where x: 1, 2, 3 or 6 to select the USART peripheral.
 422   * @param  __IT__: specifies the USART interrupt source to check.
 423   *          This parameter can be one of the following values:
 424   *            @arg USART_IT_TXE: Transmit Data Register empty interrupt
 425   *            @arg USART_IT_TC:  Transmission complete interrupt
 426   *            @arg USART_IT_RXNE: Receive Data register not empty interrupt
 427   *            @arg USART_IT_IDLE: Idle line detection interrupt
 428   *            @arg USART_IT_ERR: Error interrupt
 429   *            @arg USART_IT_PE: Parity Error interrupt
 430   * @retval The new state of __IT__ (TRUE or FALSE).
 431   */
 432 #define __HAL_USART_GET_IT_SOURCE(__HANDLE__, __IT__) (((((__IT__) >> 28) == 1)? (__HANDLE__)->Instance->CR1:(((((uint32_t)(__IT__)) >> 28) == 2)? \
 433                                                       (__HANDLE__)->Instance->CR2 : (__HANDLE__)->Instance->CR3)) & (((uint32_t)(__IT__)) & USART_IT_MASK))
 434
 435 #define __USART_ENABLE(__HANDLE__)               ( (__HANDLE__)->Instance->CR1 |=  USART_CR1_UE)
 436 #define __USART_DISABLE(__HANDLE__)              ( (__HANDLE__)->Instance->CR1 &=  ~USART_CR1_UE)
 437
 438 #define __DIV(_PCLK_, _BAUD_)                        (((_PCLK_)*25)/(4*(_BAUD_)))
 439 #define __DIVMANT(_PCLK_, _BAUD_)                    (__DIV((_PCLK_), (_BAUD_))/100)
 440 #define __DIVFRAQ(_PCLK_, _BAUD_)                    (((__DIV((_PCLK_), (_BAUD_)) - (__DIVMANT((_PCLK_), (_BAUD_)) * 100)) * 16 + 50) / 100)
 441 #define __USART_BRR(_PCLK_, _BAUD_)              ((__DIVMANT((_PCLK_), (_BAUD_)) << 4)|(__DIVFRAQ((_PCLK_), (_BAUD_)) & 0x0F))
 442
 443 #define IS_USART_BAUDRATE(BAUDRATE) ((BAUDRATE) < 10500001)
 444
 445 /* Exported functions --------------------------------------------------------*/
 446 /* Initialization/de-initialization functions  **********************************/
 447 HAL_StatusTypeDef HAL_USART_Init(USART_HandleTypeDef *husart);
 448 HAL_StatusTypeDef HAL_USART_DeInit(USART_HandleTypeDef *husart);
 449 void HAL_USART_MspInit(USART_HandleTypeDef *husart);
 450 void HAL_USART_MspDeInit(USART_HandleTypeDef *husart);
 451 /* IO operation functions *******************************************************/
 452 HAL_StatusTypeDef HAL_USART_Transmit(USART_HandleTypeDef *husart, uint8_t *pTxData, uint16_t Size, uint32_t Timeout);
 453 HAL_StatusTypeDef HAL_USART_Receive(USART_HandleTypeDef *husart, uint8_t *pRxData, uint16_t Size, uint32_t Timeout);
 454 HAL_StatusTypeDef HAL_USART_TransmitReceive(USART_HandleTypeDef *husart, uint8_t *pTxData, uint8_t *pRxData, uint16_t Size, uint32_t Timeout);
 455 HAL_StatusTypeDef HAL_USART_Transmit_IT(USART_HandleTypeDef *husart, uint8_t *pTxData, uint16_t Size);
 456 HAL_StatusTypeDef HAL_USART_Receive_IT(USART_HandleTypeDef *husart, uint8_t *pRxData, uint16_t Size);
 457 HAL_StatusTypeDef HAL_USART_TransmitReceive_IT(USART_HandleTypeDef *husart, uint8_t *pTxData, uint8_t *pRxData,  uint16_t Size);
 458 HAL_StatusTypeDef HAL_USART_Transmit_DMA(USART_HandleTypeDef *husart, uint8_t *pTxData, uint16_t Size);
 459 HAL_StatusTypeDef HAL_USART_Receive_DMA(USART_HandleTypeDef *husart, uint8_t *pRxData, uint16_t Size);
 460 HAL_StatusTypeDef HAL_USART_TransmitReceive_DMA(USART_HandleTypeDef *husart, uint8_t *pTxData, uint8_t *pRxData, uint16_t Size);
 461 HAL_StatusTypeDef HAL_USART_DMAPause(USART_HandleTypeDef *husart);
 462 HAL_StatusTypeDef HAL_USART_DMAResume(USART_HandleTypeDef *husart);
 463 HAL_StatusTypeDef HAL_USART_DMAStop(USART_HandleTypeDef *husart);
 464 void HAL_USART_IRQHandler(USART_HandleTypeDef *husart);
 465 void HAL_USART_TxCpltCallback(USART_HandleTypeDef *husart);
 466 void HAL_USART_TxHalfCpltCallback(USART_HandleTypeDef *husart);
 467 void HAL_USART_RxCpltCallback(USART_HandleTypeDef *husart);
 468 void HAL_USART_RxHalfCpltCallback(USART_HandleTypeDef *husart);
 469 void HAL_USART_TxRxCpltCallback(USART_HandleTypeDef *husart);
 470 void HAL_USART_ErrorCallback(USART_HandleTypeDef *husart);
 471
 472 /* Peripheral State functions  **************************************************/
 473 HAL_USART_StateTypeDef HAL_USART_GetState(USART_HandleTypeDef *husart);
 474 uint32_t               HAL_USART_GetError(USART_HandleTypeDef *husart);
 475
 476 /**
 477   * @}
 478   */
 479
 480 /**
 481   * @}
 482   */
 483
 484 #ifdef __cplusplus
 485 }
 486 #endif
 487
 488 #endif /* __STM32F4xx_HAL_USART_H */
 489
 490 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/