tool/mbed/mbed-sdk/libraries/mbed/targets/cmsis/TARGET_STM/TARGET_STM32F4/stm32f4xx_hal_uart.h

   1 /**
   2   ******************************************************************************
   3   * @file    stm32f4xx_hal_uart.h
   4   * @author  MCD Application Team
   5   * @version V1.1.0
   6   * @date    19-June-2014
   7   * @brief   Header file of UART 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_UART_H
  40 #define __STM32F4xx_HAL_UART_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 UART
  54   * @{
  55   */
  56
  57 /* Exported types ------------------------------------------------------------*/
  58
  59 /**
  60   * @brief UART Init Structure definition
  61   */
  62 typedef struct
  63 {
  64   uint32_t BaudRate;                  /*!< This member configures the UART communication baud rate.
  65                                            The baud rate is computed using the following formula:
  66                                            - IntegerDivider = ((PCLKx) / (8 * (OVR8+1) * (huart->Init.BaudRate)))
  67                                            - FractionalDivider = ((IntegerDivider - ((uint32_t) IntegerDivider)) * 8 * (OVR8+1)) + 0.5
  68                                            Where OVR8 is the "oversampling by 8 mode" configuration bit in the CR1 register. */
  69
  70   uint32_t WordLength;                /*!< Specifies the number of data bits transmitted or received in a frame.
  71                                            This parameter can be a value of @ref UART_Word_Length */
  72
  73   uint32_t StopBits;                  /*!< Specifies the number of stop bits transmitted.
  74                                            This parameter can be a value of @ref UART_Stop_Bits */
  75
  76   uint32_t Parity;                    /*!< Specifies the parity mode.
  77                                            This parameter can be a value of @ref UART_Parity
  78                                            @note When parity is enabled, the computed parity is inserted
  79                                                  at the MSB position of the transmitted data (9th bit when
  80                                                  the word length is set to 9 data bits; 8th bit when the
  81                                                  word length is set to 8 data bits). */
  82
  83   uint32_t Mode;                      /*!< Specifies wether the Receive or Transmit mode is enabled or disabled.
  84                                            This parameter can be a value of @ref UART_Mode */
  85
  86   uint32_t HwFlowCtl;                 /*!< Specifies wether the hardware flow control mode is enabled
  87                                            or disabled.
  88                                            This parameter can be a value of @ref UART_Hardware_Flow_Control */
  89
  90   uint32_t OverSampling;              /*!< Specifies wether the Over sampling 8 is enabled or disabled, to achieve higher speed (up to fPCLK/8).
  91                                            This parameter can be a value of @ref UART_Over_Sampling */
  92 }UART_InitTypeDef;
  93
  94 /**
  95   * @brief HAL UART State structures definition
  96   */
  97 typedef enum
  98 {
  99   HAL_UART_STATE_RESET             = 0x00,    /*!< Peripheral is not yet Initialized                  */
 100   HAL_UART_STATE_READY             = 0x01,    /*!< Peripheral Initialized and ready for use           */
 101   HAL_UART_STATE_BUSY              = 0x02,    /*!< an internal process is ongoing                     */
 102   HAL_UART_STATE_BUSY_TX           = 0x12,    /*!< Data Transmission process is ongoing               */
 103   HAL_UART_STATE_BUSY_RX           = 0x22,    /*!< Data Reception process is ongoing                  */
 104   HAL_UART_STATE_BUSY_TX_RX        = 0x32,    /*!< Data Transmission and Reception process is ongoing */
 105   HAL_UART_STATE_TIMEOUT           = 0x03,    /*!< Timeout state                                      */
 106   HAL_UART_STATE_ERROR             = 0x04     /*!< Error                                              */
 107 }HAL_UART_StateTypeDef;
 108
 109 /**
 110   * @brief  HAL UART Error Code structure definition
 111   */
 112 typedef enum
 113 {
 114   HAL_UART_ERROR_NONE      = 0x00,    /*!< No error            */
 115   HAL_UART_ERROR_PE        = 0x01,    /*!< Parity error        */
 116   HAL_UART_ERROR_NE        = 0x02,    /*!< Noise error         */
 117   HAL_UART_ERROR_FE        = 0x04,    /*!< frame error         */
 118   HAL_UART_ERROR_ORE       = 0x08,    /*!< Overrun error       */
 119   HAL_UART_ERROR_DMA       = 0x10     /*!< DMA transfer error  */
 120 }HAL_UART_ErrorTypeDef;
 121
 122 /**
 123   * @brief  UART handle Structure definition
 124   */
 125 typedef struct
 126 {
 127   USART_TypeDef                 *Instance;        /* UART registers base address        */
 128
 129   UART_InitTypeDef              Init;             /* UART communication parameters      */
 130
 131   uint8_t                       *pTxBuffPtr;      /* Pointer to UART Tx transfer Buffer */
 132
 133   uint16_t                      TxXferSize;       /* UART Tx Transfer size              */
 134
 135   uint16_t                      TxXferCount;      /* UART Tx Transfer Counter           */
 136
 137   uint8_t                       *pRxBuffPtr;      /* Pointer to UART Rx transfer Buffer */
 138
 139   uint16_t                      RxXferSize;       /* UART Rx Transfer size              */
 140
 141   uint16_t                      RxXferCount;      /* UART Rx Transfer Counter           */
 142
 143   DMA_HandleTypeDef             *hdmatx;          /* UART Tx DMA Handle parameters      */
 144
 145   DMA_HandleTypeDef             *hdmarx;          /* UART Rx DMA Handle parameters      */
 146
 147   HAL_LockTypeDef               Lock;            /* Locking object                     */
 148
 149   __IO HAL_UART_StateTypeDef    State;            /* UART communication state           */
 150
 151   __IO HAL_UART_ErrorTypeDef    ErrorCode;        /* UART Error code                    */
 152
 153 }UART_HandleTypeDef;
 154
 155 /* Exported constants --------------------------------------------------------*/
 156 /** @defgroup UART_Exported_Constants
 157   * @{
 158   */
 159
 160 /** @defgroup UART_Word_Length
 161   * @{
 162   */
 163 #define UART_WORDLENGTH_8B                  ((uint32_t)0x00000000)
 164 #define UART_WORDLENGTH_9B                  ((uint32_t)USART_CR1_M)
 165 #define IS_UART_WORD_LENGTH(LENGTH) (((LENGTH) == UART_WORDLENGTH_8B) || \
 166                                      ((LENGTH) == UART_WORDLENGTH_9B))
 167 /**
 168   * @}
 169   */
 170
 171 /** @defgroup UART_Stop_Bits
 172   * @{
 173   */
 174 #define UART_STOPBITS_1                     ((uint32_t)0x00000000)
 175 #define UART_STOPBITS_2                     ((uint32_t)USART_CR2_STOP_1)
 176 #define IS_UART_STOPBITS(STOPBITS) (((STOPBITS) == UART_STOPBITS_1) || \
 177                                     ((STOPBITS) == UART_STOPBITS_2))
 178 /**
 179   * @}
 180   */
 181
 182 /** @defgroup UART_Parity
 183   * @{
 184   */
 185 #define UART_PARITY_NONE                    ((uint32_t)0x00000000)
 186 #define UART_PARITY_EVEN                    ((uint32_t)USART_CR1_PCE)
 187 #define UART_PARITY_ODD                     ((uint32_t)(USART_CR1_PCE | USART_CR1_PS))
 188 #define IS_UART_PARITY(PARITY) (((PARITY) == UART_PARITY_NONE) || \
 189                                 ((PARITY) == UART_PARITY_EVEN) || \
 190                                 ((PARITY) == UART_PARITY_ODD))
 191 /**
 192   * @}
 193   */
 194
 195 /** @defgroup UART_Hardware_Flow_Control
 196   * @{
 197   */
 198 #define UART_HWCONTROL_NONE                  ((uint32_t)0x00000000)
 199 #define UART_HWCONTROL_RTS                   ((uint32_t)USART_CR3_RTSE)
 200 #define UART_HWCONTROL_CTS                   ((uint32_t)USART_CR3_CTSE)
 201 #define UART_HWCONTROL_RTS_CTS               ((uint32_t)(USART_CR3_RTSE | USART_CR3_CTSE))
 202 #define IS_UART_HARDWARE_FLOW_CONTROL(CONTROL)\
 203                               (((CONTROL) == UART_HWCONTROL_NONE) || \
 204                                ((CONTROL) == UART_HWCONTROL_RTS) || \
 205                                ((CONTROL) == UART_HWCONTROL_CTS) || \
 206                                ((CONTROL) == UART_HWCONTROL_RTS_CTS))
 207 /**
 208   * @}
 209   */
 210
 211 /** @defgroup UART_Mode
 212   * @{
 213   */
 214 #define UART_MODE_RX                        ((uint32_t)USART_CR1_RE)
 215 #define UART_MODE_TX                        ((uint32_t)USART_CR1_TE)
 216 #define UART_MODE_TX_RX                     ((uint32_t)(USART_CR1_TE |USART_CR1_RE))
 217 #define IS_UART_MODE(MODE) ((((MODE) & (uint32_t)0x0000FFF3) == 0x00) && ((MODE) != (uint32_t)0x000000))
 218 /**
 219   * @}
 220   */
 221
 222  /** @defgroup UART_State
 223   * @{
 224   */
 225 #define UART_STATE_DISABLE                  ((uint32_t)0x00000000)
 226 #define UART_STATE_ENABLE                   ((uint32_t)USART_CR1_UE)
 227 #define IS_UART_STATE(STATE) (((STATE) == UART_STATE_DISABLE) || \
 228                               ((STATE) == UART_STATE_ENABLE))
 229 /**
 230   * @}
 231   */
 232
 233 /** @defgroup UART_Over_Sampling
 234   * @{
 235   */
 236 #define UART_OVERSAMPLING_16                    ((uint32_t)0x00000000)
 237 #define UART_OVERSAMPLING_8                     ((uint32_t)USART_CR1_OVER8)
 238 #define IS_UART_OVERSAMPLING(SAMPLING) (((SAMPLING) == UART_OVERSAMPLING_16) || \
 239                                         ((SAMPLING) == UART_OVERSAMPLING_8))
 240 /**
 241   * @}
 242   */
 243
 244 /** @defgroup UART_LIN_Break_Detection_Length
 245   * @{
 246   */
 247 #define UART_LINBREAKDETECTLENGTH_10B      ((uint32_t)0x00000000)
 248 #define UART_LINBREAKDETECTLENGTH_11B      ((uint32_t)0x00000020)
 249 #define IS_UART_LIN_BREAK_DETECT_LENGTH(LENGTH) (((LENGTH) == UART_LINBREAKDETECTLENGTH_10B) || \
 250                                                  ((LENGTH) == UART_LINBREAKDETECTLENGTH_11B))
 251 /**
 252   * @}
 253   */
 254
 255 /** @defgroup UART_WakeUp_functions
 256   * @{
 257   */
 258 #define UART_WAKEUPMETHODE_IDLELINE                ((uint32_t)0x00000000)
 259 #define UART_WAKEUPMETHODE_ADDRESSMARK             ((uint32_t)0x00000800)
 260 #define IS_UART_WAKEUPMETHODE(WAKEUP) (((WAKEUP) == UART_WAKEUPMETHODE_IDLELINE) || \
 261                                        ((WAKEUP) == UART_WAKEUPMETHODE_ADDRESSMARK))
 262 /**
 263   * @}
 264   */
 265
 266 /** @defgroup UART_Flags
 267   *        Elements values convention: 0xXXXX
 268   *           - 0xXXXX  : Flag mask in the SR register
 269   * @{
 270   */
 271 #define UART_FLAG_CTS                       ((uint32_t)0x00000200)
 272 #define UART_FLAG_LBD                       ((uint32_t)0x00000100)
 273 #define UART_FLAG_TXE                       ((uint32_t)0x00000080)
 274 #define UART_FLAG_TC                        ((uint32_t)0x00000040)
 275 #define UART_FLAG_RXNE                      ((uint32_t)0x00000020)
 276 #define UART_FLAG_IDLE                      ((uint32_t)0x00000010)
 277 #define UART_FLAG_ORE                       ((uint32_t)0x00000008)
 278 #define UART_FLAG_NE                        ((uint32_t)0x00000004)
 279 #define UART_FLAG_FE                        ((uint32_t)0x00000002)
 280 #define UART_FLAG_PE                        ((uint32_t)0x00000001)
 281 /**
 282   * @}
 283   */
 284
 285 /** @defgroup UART_Interrupt_definition
 286   *        Elements values convention: 0xY000XXXX
 287   *           - XXXX  : Interrupt mask in the XX register
 288   *           - Y  : Interrupt source register (2bits)
 289   *                 - 01: CR1 register
 290   *                 - 10: CR2 register
 291   *                 - 11: CR3 register
 292   *
 293   * @{
 294   */
 295 #define UART_IT_PE                          ((uint32_t)0x10000100)
 296 #define UART_IT_TXE                         ((uint32_t)0x10000080)
 297 #define UART_IT_TC                          ((uint32_t)0x10000040)
 298 #define UART_IT_RXNE                        ((uint32_t)0x10000020)
 299 #define UART_IT_IDLE                        ((uint32_t)0x10000010)
 300
 301 #define UART_IT_LBD                         ((uint32_t)0x20000040)
 302 #define UART_IT_CTS                         ((uint32_t)0x30000400)
 303
 304 #define UART_IT_ERR                         ((uint32_t)0x30000001)
 305
 306 /**
 307   * @}
 308   */
 309
 310 /**
 311   * @}
 312   */
 313
 314 /* Exported macro ------------------------------------------------------------*/
 315
 316 /** @brief Reset UART handle state
 317   * @param  __HANDLE__: specifies the UART Handle.
 318   *         This parameter can be UARTx where x: 1, 2, 3, 4, 5, 6, 7 or 8 to select the USART or
 319   *         UART peripheral.
 320   * @retval None
 321   */
 322 #define __HAL_UART_RESET_HANDLE_STATE(__HANDLE__) ((__HANDLE__)->State = HAL_UART_STATE_RESET)
 323
 324 /** @brief  Flushs the UART DR register
 325   * @param  __HANDLE__: specifies the UART Handle.
 326   */
 327 #define __HAL_UART_FLUSH_DRREGISTER(__HANDLE__) ((__HANDLE__)->Instance->DR)
 328
 329 /** @brief  Checks whether the specified UART flag is set or not.
 330   * @param  __HANDLE__: specifies the UART Handle.
 331   *         This parameter can be UARTx where x: 1, 2, 3, 4, 5, 6, 7 or 8 to select the USART or
 332   *         UART peripheral.
 333   * @param  __FLAG__: specifies the flag to check.
 334   *        This parameter can be one of the following values:
 335   *            @arg UART_FLAG_CTS:  CTS Change flag (not available for UART4 and UART5)
 336   *            @arg UART_FLAG_LBD:  LIN Break detection flag
 337   *            @arg UART_FLAG_TXE:  Transmit data register empty flag
 338   *            @arg UART_FLAG_TC:   Transmission Complete flag
 339   *            @arg UART_FLAG_RXNE: Receive data register not empty flag
 340   *            @arg UART_FLAG_IDLE: Idle Line detection flag
 341   *            @arg UART_FLAG_ORE:  OverRun Error flag
 342   *            @arg UART_FLAG_NE:   Noise Error flag
 343   *            @arg UART_FLAG_FE:   Framing Error flag
 344   *            @arg UART_FLAG_PE:   Parity Error flag
 345   * @retval The new state of __FLAG__ (TRUE or FALSE).
 346   */
 347
 348 #define __HAL_UART_GET_FLAG(__HANDLE__, __FLAG__) (((__HANDLE__)->Instance->SR & (__FLAG__)) == (__FLAG__))
 349
 350 /** @brief  Clears the specified UART pending flag.
 351   * @param  __HANDLE__: specifies the UART Handle.
 352   *         This parameter can be UARTx where x: 1, 2, 3, 4, 5, 6, 7 or 8 to select the USART or
 353   *         UART peripheral.
 354   * @param  __FLAG__: specifies the flag to check.
 355   *          This parameter can be any combination of the following values:
 356   *            @arg UART_FLAG_CTS:  CTS Change flag (not available for UART4 and UART5).
 357   *            @arg UART_FLAG_LBD:  LIN Break detection flag.
 358   *            @arg UART_FLAG_TC:   Transmission Complete flag.
 359   *            @arg UART_FLAG_RXNE: Receive data register not empty flag.
 360   *
 361   * @note   PE (Parity error), FE (Framing error), NE (Noise error), ORE (OverRun
 362   *          error) and IDLE (Idle line detected) flags are cleared by software
 363   *          sequence: a read operation to USART_SR register followed by a read
 364   *          operation to USART_DR register.
 365   * @note   RXNE flag can be also cleared by a read to the USART_DR register.
 366   * @note   TC flag can be also cleared by software sequence: a read operation to
 367   *          USART_SR register followed by a write operation to USART_DR register.
 368   * @note   TXE flag is cleared only by a write to the USART_DR register.
 369   *
 370   * @retval None
 371   */
 372 #define __HAL_UART_CLEAR_FLAG(__HANDLE__, __FLAG__) ((__HANDLE__)->Instance->SR = ~(__FLAG__))
 373
 374 /** @brief  Clear the UART PE pending flag.
 375   * @param  __HANDLE__: specifies the UART Handle.
 376   *         This parameter can be UARTx where x: 1, 2, 3, 4, 5, 6, 7 or 8 to select the USART or
 377   *         UART peripheral.
 378   * @retval None
 379   */
 380 #define __HAL_UART_CLEAR_PEFLAG(__HANDLE__) do{(__HANDLE__)->Instance->SR;\
 381                                                (__HANDLE__)->Instance->DR;}while(0)
 382 /** @brief  Clear the UART FE pending flag.
 383   * @param  __HANDLE__: specifies the UART Handle.
 384   *         This parameter can be UARTx where x: 1, 2, 3, 4, 5, 6, 7 or 8 to select the USART or
 385   *         UART peripheral.
 386   * @retval None
 387   */
 388 #define __HAL_UART_CLEAR_FEFLAG(__HANDLE__) __HAL_UART_CLEAR_PEFLAG(__HANDLE__)
 389
 390 /** @brief  Clear the UART NE pending flag.
 391   * @param  __HANDLE__: specifies the UART Handle.
 392   *         This parameter can be UARTx where x: 1, 2, 3, 4, 5, 6, 7 or 8 to select the USART or
 393   *         UART peripheral.
 394   * @retval None
 395   */
 396 #define __HAL_UART_CLEAR_NEFLAG(__HANDLE__) __HAL_UART_CLEAR_PEFLAG(__HANDLE__)
 397
 398 /** @brief  Clear the UART ORE pending flag.
 399   * @param  __HANDLE__: specifies the UART Handle.
 400   *         This parameter can be UARTx where x: 1, 2, 3, 4, 5, 6, 7 or 8 to select the USART or
 401   *         UART peripheral.
 402   * @retval None
 403   */
 404 #define __HAL_UART_CLEAR_OREFLAG(__HANDLE__) __HAL_UART_CLEAR_PEFLAG(__HANDLE__)
 405
 406 /** @brief  Clear the UART IDLE pending flag.
 407   * @param  __HANDLE__: specifies the UART Handle.
 408   *         This parameter can be UARTx where x: 1, 2, 3, 4, 5, 6, 7 or 8 to select the USART or
 409   *         UART peripheral.
 410   * @retval None
 411   */
 412 #define __HAL_UART_CLEAR_IDLEFLAG(__HANDLE__) __HAL_UART_CLEAR_PEFLAG(__HANDLE__)
 413
 414 /** @brief  Enables or disables the specified UART interrupt.
 415   * @param  __HANDLE__: specifies the UART Handle.
 416   *         This parameter can be UARTx where x: 1, 2, 3, 4, 5, 6, 7 or 8 to select the USART or
 417   *         UART peripheral.
 418   * @param  __INTERRUPT__: specifies the UART interrupt source to check.
 419   *          This parameter can be one of the following values:
 420   *            @arg UART_IT_CTS:  CTS change interrupt
 421   *            @arg UART_IT_LBD:  LIN Break detection interrupt
 422   *            @arg UART_IT_TXE:  Transmit Data Register empty interrupt
 423   *            @arg UART_IT_TC:   Transmission complete interrupt
 424   *            @arg UART_IT_RXNE: Receive Data register not empty interrupt
 425   *            @arg UART_IT_IDLE: Idle line detection interrupt
 426   *            @arg UART_IT_PE:   Parity Error interrupt
 427   *            @arg UART_IT_ERR:  Error interrupt(Frame error, noise error, overrun error)
 428   * @param  NewState: new state of the specified UART interrupt.
 429   *          This parameter can be: ENABLE or DISABLE.
 430   * @retval None
 431   */
 432 #define UART_IT_MASK  ((uint32_t)0x0000FFFF)
 433 #define __HAL_UART_ENABLE_IT(__HANDLE__, __INTERRUPT__)   ((((__INTERRUPT__) >> 28) == 1)? ((__HANDLE__)->Instance->CR1 |= ((__INTERRUPT__) & UART_IT_MASK)): \
 434                                                            (((__INTERRUPT__) >> 28) == 2)? ((__HANDLE__)->Instance->CR2 |=  ((__INTERRUPT__) & UART_IT_MASK)): \
 435                                                         ((__HANDLE__)->Instance->CR3 |= ((__INTERRUPT__) & UART_IT_MASK)))
 436 #define __HAL_UART_DISABLE_IT(__HANDLE__, __INTERRUPT__)  ((((__INTERRUPT__) >> 28) == 1)? ((__HANDLE__)->Instance->CR1 &= ~((__INTERRUPT__) & UART_IT_MASK)): \
 437                                                            (((__INTERRUPT__) >> 28) == 2)? ((__HANDLE__)->Instance->CR2 &= ~((__INTERRUPT__) & UART_IT_MASK)): \
 438                                                         ((__HANDLE__)->Instance->CR3 &= ~ ((__INTERRUPT__) & UART_IT_MASK)))
 439
 440 /** @brief  Checks whether the specified UART interrupt has occurred or not.
 441   * @param  __HANDLE__: specifies the UART Handle.
 442   *         This parameter can be UARTx where x: 1, 2, 3, 4, 5, 6, 7 or 8 to select the USART or
 443   *         UART peripheral.
 444   * @param  __IT__: specifies the UART interrupt source to check.
 445   *          This parameter can be one of the following values:
 446   *            @arg UART_IT_CTS: CTS change interrupt (not available for UART4 and UART5)
 447   *            @arg UART_IT_LBD: LIN Break detection interrupt
 448   *            @arg UART_IT_TXE: Transmit Data Register empty interrupt
 449   *            @arg UART_IT_TC:  Transmission complete interrupt
 450   *            @arg UART_IT_RXNE: Receive Data register not empty interrupt
 451   *            @arg UART_IT_IDLE: Idle line detection interrupt
 452   *            @arg USART_IT_ERR: Error interrupt
 453   * @retval The new state of __IT__ (TRUE or FALSE).
 454   */
 455 #define __HAL_UART_GET_IT_SOURCE(__HANDLE__, __IT__) (((((__IT__) >> 28) == 1)? (__HANDLE__)->Instance->CR1:(((((uint32_t)(__IT__)) >> 28) == 2)? \
 456                                                       (__HANDLE__)->Instance->CR2 : (__HANDLE__)->Instance->CR3)) & (((uint32_t)(__IT__)) & UART_IT_MASK))
 457
 458 /** @brief  Enable CTS flow control
 459   *         This macro allows to enable CTS hardware flow control for a given UART instance,
 460   *         without need to call HAL_UART_Init() function.
 461   *         As involving direct access to UART registers, usage of this macro should be fully endorsed by user.
 462   * @note   As macro is expected to be used for modifying CTS Hw flow control feature activation, without need
 463   *         for USART instance Deinit/Init, following conditions for macro call should be fulfilled :
 464   *           - UART instance should have already been initialised (through call of HAL_UART_Init() )
 465   *           - macro could only be called when corresponding UART instance is disabled (i.e __HAL_UART_DISABLE(__HANDLE__))
 466   *             and should be followed by an Enable macro (i.e __HAL_UART_ENABLE(__HANDLE__)).
 467   * @param  __HANDLE__: specifies the UART Handle.
 468   *         The Handle Instance can be USART1, USART2 or LPUART.
 469   * @retval None
 470   */
 471 #define __HAL_UART_HWCONTROL_CTS_ENABLE(__HANDLE__)        \
 472   do{                                                      \
 473     SET_BIT((__HANDLE__)->Instance->CR3, USART_CR3_CTSE);  \
 474     (__HANDLE__)->Init.HwFlowCtl |= USART_CR3_CTSE;        \
 475   } while(0)
 476
 477 /** @brief  Disable CTS flow control
 478   *         This macro allows to disable CTS hardware flow control for a given UART instance,
 479   *         without need to call HAL_UART_Init() function.
 480   *         As involving direct access to UART registers, usage of this macro should be fully endorsed by user.
 481   * @note   As macro is expected to be used for modifying CTS Hw flow control feature activation, without need
 482   *         for USART instance Deinit/Init, following conditions for macro call should be fulfilled :
 483   *           - UART instance should have already been initialised (through call of HAL_UART_Init() )
 484   *           - macro could only be called when corresponding UART instance is disabled (i.e __HAL_UART_DISABLE(__HANDLE__))
 485   *             and should be followed by an Enable macro (i.e __HAL_UART_ENABLE(__HANDLE__)).
 486   * @param  __HANDLE__: specifies the UART Handle.
 487   *         The Handle Instance can be USART1, USART2 or LPUART.
 488   * @retval None
 489   */
 490 #define __HAL_UART_HWCONTROL_CTS_DISABLE(__HANDLE__)        \
 491   do{                                                       \
 492     CLEAR_BIT((__HANDLE__)->Instance->CR3, USART_CR3_CTSE); \
 493     (__HANDLE__)->Init.HwFlowCtl &= ~(USART_CR3_CTSE);      \
 494   } while(0)
 495
 496 /** @brief  Enable RTS flow control
 497   *         This macro allows to enable RTS hardware flow control for a given UART instance,
 498   *         without need to call HAL_UART_Init() function.
 499   *         As involving direct access to UART registers, usage of this macro should be fully endorsed by user.
 500   * @note   As macro is expected to be used for modifying RTS Hw flow control feature activation, without need
 501   *         for USART instance Deinit/Init, following conditions for macro call should be fulfilled :
 502   *           - UART instance should have already been initialised (through call of HAL_UART_Init() )
 503   *           - macro could only be called when corresponding UART instance is disabled (i.e __HAL_UART_DISABLE(__HANDLE__))
 504   *             and should be followed by an Enable macro (i.e __HAL_UART_ENABLE(__HANDLE__)).
 505   * @param  __HANDLE__: specifies the UART Handle.
 506   *         The Handle Instance can be USART1, USART2 or LPUART.
 507   * @retval None
 508   */
 509 #define __HAL_UART_HWCONTROL_RTS_ENABLE(__HANDLE__)       \
 510   do{                                                     \
 511     SET_BIT((__HANDLE__)->Instance->CR3, USART_CR3_RTSE); \
 512     (__HANDLE__)->Init.HwFlowCtl |= USART_CR3_RTSE;       \
 513   } while(0)
 514
 515 /** @brief  Disable RTS flow control
 516   *         This macro allows to disable RTS hardware flow control for a given UART instance,
 517   *         without need to call HAL_UART_Init() function.
 518   *         As involving direct access to UART registers, usage of this macro should be fully endorsed by user.
 519   * @note   As macro is expected to be used for modifying RTS Hw flow control feature activation, without need
 520   *         for USART instance Deinit/Init, following conditions for macro call should be fulfilled :
 521   *           - UART instance should have already been initialised (through call of HAL_UART_Init() )
 522   *           - macro could only be called when corresponding UART instance is disabled (i.e __HAL_UART_DISABLE(__HANDLE__))
 523   *             and should be followed by an Enable macro (i.e __HAL_UART_ENABLE(__HANDLE__)).
 524   * @param  __HANDLE__: specifies the UART Handle.
 525   *         The Handle Instance can be USART1, USART2 or LPUART.
 526   * @retval None
 527   */
 528 #define __HAL_UART_HWCONTROL_RTS_DISABLE(__HANDLE__)       \
 529   do{                                                      \
 530     CLEAR_BIT((__HANDLE__)->Instance->CR3, USART_CR3_RTSE);\
 531     (__HANDLE__)->Init.HwFlowCtl &= ~(USART_CR3_RTSE);     \
 532   } while(0)
 533
 534 /** @brief  macros to enables or disables the UART's one bit sampling method
 535   * @param  __HANDLE__: specifies the UART Handle.
 536   * @retval None
 537   */
 538 #define __HAL_UART_ONEBIT_ENABLE(__HANDLE__) ((__HANDLE__)->Instance->CR3|= USART_CR3_ONEBIT)
 539 #define __HAL_UART_ONEBIT_DISABLE(__HANDLE__) ((__HANDLE__)->Instance->CR3 &= (uint16_t)~((uint16_t)USART_CR3_ONEBIT))
 540
 541 #define __HAL_UART_ENABLE(__HANDLE__)               ((__HANDLE__)->Instance->CR1 |=  USART_CR1_UE)
 542 #define __HAL_UART_DISABLE(__HANDLE__)              ((__HANDLE__)->Instance->CR1 &=  ~USART_CR1_UE)
 543
 544 #define __DIV_SAMPLING16(_PCLK_, _BAUD_)            (((_PCLK_)*25)/(4*(_BAUD_)))
 545 #define __DIVMANT_SAMPLING16(_PCLK_, _BAUD_)        (__DIV_SAMPLING16((_PCLK_), (_BAUD_))/100)
 546 #define __DIVFRAQ_SAMPLING16(_PCLK_, _BAUD_)        (((__DIV_SAMPLING16((_PCLK_), (_BAUD_)) - (__DIVMANT_SAMPLING16((_PCLK_), (_BAUD_)) * 100)) * 16 + 50) / 100)
 547 #define __UART_BRR_SAMPLING16(_PCLK_, _BAUD_)       ((__DIVMANT_SAMPLING16((_PCLK_), (_BAUD_)) << 4)|(__DIVFRAQ_SAMPLING16((_PCLK_), (_BAUD_)) & 0x0F))
 548
 549 #define __DIV_SAMPLING8(_PCLK_, _BAUD_)             (((_PCLK_)*25)/(2*(_BAUD_)))
 550 #define __DIVMANT_SAMPLING8(_PCLK_, _BAUD_)         (__DIV_SAMPLING8((_PCLK_), (_BAUD_))/100)
 551 #define __DIVFRAQ_SAMPLING8(_PCLK_, _BAUD_)         (((__DIV_SAMPLING8((_PCLK_), (_BAUD_)) - (__DIVMANT_SAMPLING8((_PCLK_), (_BAUD_)) * 100)) * 16 + 50) / 100)
 552 #define __UART_BRR_SAMPLING8(_PCLK_, _BAUD_)        ((__DIVMANT_SAMPLING8((_PCLK_), (_BAUD_)) << 4)|(__DIVFRAQ_SAMPLING8((_PCLK_), (_BAUD_)) & 0x0F))
 553
 554 #define IS_UART_BAUDRATE(BAUDRATE) ((BAUDRATE) < 10500001)
 555 #define IS_UART_ADDRESS(ADDRESS) ((ADDRESS) <= 0xF)
 556
 557 /* Exported functions --------------------------------------------------------*/
 558 /* Initialization/de-initialization functions  **********************************/
 559 HAL_StatusTypeDef HAL_UART_Init(UART_HandleTypeDef *huart);
 560 HAL_StatusTypeDef HAL_HalfDuplex_Init(UART_HandleTypeDef *huart);
 561 HAL_StatusTypeDef HAL_LIN_Init(UART_HandleTypeDef *huart, uint32_t BreakDetectLength);
 562 HAL_StatusTypeDef HAL_MultiProcessor_Init(UART_HandleTypeDef *huart, uint8_t Address, uint32_t WakeUpMethode);
 563 HAL_StatusTypeDef HAL_UART_DeInit (UART_HandleTypeDef *huart);
 564 void HAL_UART_MspInit(UART_HandleTypeDef *huart);
 565 void HAL_UART_MspDeInit(UART_HandleTypeDef *huart);
 566
 567 /* IO operation functions *******************************************************/
 568 HAL_StatusTypeDef HAL_UART_Transmit(UART_HandleTypeDef *huart, uint8_t *pData, uint16_t Size, uint32_t Timeout);
 569 HAL_StatusTypeDef HAL_UART_Receive(UART_HandleTypeDef *huart, uint8_t *pData, uint16_t Size, uint32_t Timeout);
 570 HAL_StatusTypeDef HAL_UART_Transmit_IT(UART_HandleTypeDef *huart, uint8_t *pData, uint16_t Size);
 571 HAL_StatusTypeDef HAL_UART_Receive_IT(UART_HandleTypeDef *huart, uint8_t *pData, uint16_t Size);
 572 HAL_StatusTypeDef HAL_UART_Transmit_DMA(UART_HandleTypeDef *huart, uint8_t *pData, uint16_t Size);
 573 HAL_StatusTypeDef HAL_UART_Receive_DMA(UART_HandleTypeDef *huart, uint8_t *pData, uint16_t Size);
 574 HAL_StatusTypeDef HAL_UART_DMAPause(UART_HandleTypeDef *huart);
 575 HAL_StatusTypeDef HAL_UART_DMAResume(UART_HandleTypeDef *huart);
 576 HAL_StatusTypeDef HAL_UART_DMAStop(UART_HandleTypeDef *huart);
 577 void HAL_UART_IRQHandler(UART_HandleTypeDef *huart);
 578 void HAL_UART_TxCpltCallback(UART_HandleTypeDef *huart);
 579 void HAL_UART_TxHalfCpltCallback(UART_HandleTypeDef *huart);
 580 void HAL_UART_RxCpltCallback(UART_HandleTypeDef *huart);
 581 void HAL_UART_RxHalfCpltCallback(UART_HandleTypeDef *huart);
 582 void HAL_UART_ErrorCallback(UART_HandleTypeDef *huart);
 583
 584 /* Peripheral Control functions  ************************************************/
 585 HAL_StatusTypeDef HAL_LIN_SendBreak(UART_HandleTypeDef *huart);
 586 HAL_StatusTypeDef HAL_MultiProcessor_EnterMuteMode(UART_HandleTypeDef *huart);
 587 HAL_StatusTypeDef HAL_MultiProcessor_ExitMuteMode(UART_HandleTypeDef *huart);
 588 HAL_StatusTypeDef HAL_HalfDuplex_EnableTransmitter(UART_HandleTypeDef *huart);
 589 HAL_StatusTypeDef HAL_HalfDuplex_EnableReceiver(UART_HandleTypeDef *huart);
 590
 591 /* Peripheral State functions  **************************************************/
 592 HAL_UART_StateTypeDef HAL_UART_GetState(UART_HandleTypeDef *huart);
 593 uint32_t              HAL_UART_GetError(UART_HandleTypeDef *huart);
 594
 595 /**
 596   * @}
 597   */
 598
 599 /**
 600   * @}
 601   */
 602
 603 #ifdef __cplusplus
 604 }
 605 #endif
 606
 607 #endif /* __STM32F4xx_HAL_UART_H */
 608
 609 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/