Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_ll_usart.h (99185B)
1 /** 2 ****************************************************************************** 3 * @file stm32f1xx_ll_usart.h 4 * @author MCD Application Team 5 * @brief Header file of USART LL module. 6 ****************************************************************************** 7 * @attention 8 * 9 * Copyright (c) 2016 STMicroelectronics. 10 * All rights reserved. 11 * 12 * This software is licensed under terms that can be found in the LICENSE file 13 * in the root directory of this software component. 14 * If no LICENSE file comes with this software, it is provided AS-IS. 15 * 16 ****************************************************************************** 17 */ 18 19 /* Define to prevent recursive inclusion -------------------------------------*/ 20 #ifndef __STM32F1xx_LL_USART_H 21 #define __STM32F1xx_LL_USART_H 22 23 #ifdef __cplusplus 24 extern "C" { 25 #endif 26 27 /* Includes ------------------------------------------------------------------*/ 28 #include "stm32f1xx.h" 29 30 /** @addtogroup STM32F1xx_LL_Driver 31 * @{ 32 */ 33 34 #if defined (USART1) || defined (USART2) || defined (USART3) || defined (UART4) || defined (UART5) 35 36 /** @defgroup USART_LL USART 37 * @{ 38 */ 39 40 /* Private types -------------------------------------------------------------*/ 41 /* Private variables ---------------------------------------------------------*/ 42 43 /* Private constants ---------------------------------------------------------*/ 44 /** @defgroup USART_LL_Private_Constants USART Private Constants 45 * @{ 46 */ 47 48 /* Defines used for the bit position in the register and perform offsets*/ 49 #define USART_POSITION_GTPR_GT USART_GTPR_GT_Pos 50 /** 51 * @} 52 */ 53 54 /* Private macros ------------------------------------------------------------*/ 55 #if defined(USE_FULL_LL_DRIVER) 56 /** @defgroup USART_LL_Private_Macros USART Private Macros 57 * @{ 58 */ 59 /** 60 * @} 61 */ 62 #endif /*USE_FULL_LL_DRIVER*/ 63 64 /* Exported types ------------------------------------------------------------*/ 65 #if defined(USE_FULL_LL_DRIVER) 66 /** @defgroup USART_LL_ES_INIT USART Exported Init structures 67 * @{ 68 */ 69 70 /** 71 * @brief LL USART Init Structure definition 72 */ 73 typedef struct 74 { 75 uint32_t BaudRate; /*!< This field defines expected Usart communication baud rate. 76 77 This feature can be modified afterwards using unitary function @ref LL_USART_SetBaudRate().*/ 78 79 uint32_t DataWidth; /*!< Specifies the number of data bits transmitted or received in a frame. 80 This parameter can be a value of @ref USART_LL_EC_DATAWIDTH. 81 82 This feature can be modified afterwards using unitary function @ref LL_USART_SetDataWidth().*/ 83 84 uint32_t StopBits; /*!< Specifies the number of stop bits transmitted. 85 This parameter can be a value of @ref USART_LL_EC_STOPBITS. 86 87 This feature can be modified afterwards using unitary function @ref LL_USART_SetStopBitsLength().*/ 88 89 uint32_t Parity; /*!< Specifies the parity mode. 90 This parameter can be a value of @ref USART_LL_EC_PARITY. 91 92 This feature can be modified afterwards using unitary function @ref LL_USART_SetParity().*/ 93 94 uint32_t TransferDirection; /*!< Specifies whether the Receive and/or Transmit mode is enabled or disabled. 95 This parameter can be a value of @ref USART_LL_EC_DIRECTION. 96 97 This feature can be modified afterwards using unitary function @ref LL_USART_SetTransferDirection().*/ 98 99 uint32_t HardwareFlowControl; /*!< Specifies whether the hardware flow control mode is enabled or disabled. 100 This parameter can be a value of @ref USART_LL_EC_HWCONTROL. 101 102 This feature can be modified afterwards using unitary function @ref LL_USART_SetHWFlowCtrl().*/ 103 104 uint32_t OverSampling; /*!< Specifies whether USART oversampling mode is 16 or 8. 105 This parameter can be a value of @ref USART_LL_EC_OVERSAMPLING. 106 107 This feature can be modified afterwards using unitary function @ref LL_USART_SetOverSampling().*/ 108 109 } LL_USART_InitTypeDef; 110 111 /** 112 * @brief LL USART Clock Init Structure definition 113 */ 114 typedef struct 115 { 116 uint32_t ClockOutput; /*!< Specifies whether the USART clock is enabled or disabled. 117 This parameter can be a value of @ref USART_LL_EC_CLOCK. 118 119 USART HW configuration can be modified afterwards using unitary functions 120 @ref LL_USART_EnableSCLKOutput() or @ref LL_USART_DisableSCLKOutput(). 121 For more details, refer to description of this function. */ 122 123 uint32_t ClockPolarity; /*!< Specifies the steady state of the serial clock. 124 This parameter can be a value of @ref USART_LL_EC_POLARITY. 125 126 USART HW configuration can be modified afterwards using unitary functions @ref LL_USART_SetClockPolarity(). 127 For more details, refer to description of this function. */ 128 129 uint32_t ClockPhase; /*!< Specifies the clock transition on which the bit capture is made. 130 This parameter can be a value of @ref USART_LL_EC_PHASE. 131 132 USART HW configuration can be modified afterwards using unitary functions @ref LL_USART_SetClockPhase(). 133 For more details, refer to description of this function. */ 134 135 uint32_t LastBitClockPulse; /*!< Specifies whether the clock pulse corresponding to the last transmitted 136 data bit (MSB) has to be output on the SCLK pin in synchronous mode. 137 This parameter can be a value of @ref USART_LL_EC_LASTCLKPULSE. 138 139 USART HW configuration can be modified afterwards using unitary functions @ref LL_USART_SetLastClkPulseOutput(). 140 For more details, refer to description of this function. */ 141 142 } LL_USART_ClockInitTypeDef; 143 144 /** 145 * @} 146 */ 147 #endif /* USE_FULL_LL_DRIVER */ 148 149 /* Exported constants --------------------------------------------------------*/ 150 /** @defgroup USART_LL_Exported_Constants USART Exported Constants 151 * @{ 152 */ 153 154 /** @defgroup USART_LL_EC_GET_FLAG Get Flags Defines 155 * @brief Flags defines which can be used with LL_USART_ReadReg function 156 * @{ 157 */ 158 #define LL_USART_SR_PE USART_SR_PE /*!< Parity error flag */ 159 #define LL_USART_SR_FE USART_SR_FE /*!< Framing error flag */ 160 #define LL_USART_SR_NE USART_SR_NE /*!< Noise detected flag */ 161 #define LL_USART_SR_ORE USART_SR_ORE /*!< Overrun error flag */ 162 #define LL_USART_SR_IDLE USART_SR_IDLE /*!< Idle line detected flag */ 163 #define LL_USART_SR_RXNE USART_SR_RXNE /*!< Read data register not empty flag */ 164 #define LL_USART_SR_TC USART_SR_TC /*!< Transmission complete flag */ 165 #define LL_USART_SR_TXE USART_SR_TXE /*!< Transmit data register empty flag */ 166 #define LL_USART_SR_LBD USART_SR_LBD /*!< LIN break detection flag */ 167 #define LL_USART_SR_CTS USART_SR_CTS /*!< CTS flag */ 168 /** 169 * @} 170 */ 171 172 /** @defgroup USART_LL_EC_IT IT Defines 173 * @brief IT defines which can be used with LL_USART_ReadReg and LL_USART_WriteReg functions 174 * @{ 175 */ 176 #define LL_USART_CR1_IDLEIE USART_CR1_IDLEIE /*!< IDLE interrupt enable */ 177 #define LL_USART_CR1_RXNEIE USART_CR1_RXNEIE /*!< Read data register not empty interrupt enable */ 178 #define LL_USART_CR1_TCIE USART_CR1_TCIE /*!< Transmission complete interrupt enable */ 179 #define LL_USART_CR1_TXEIE USART_CR1_TXEIE /*!< Transmit data register empty interrupt enable */ 180 #define LL_USART_CR1_PEIE USART_CR1_PEIE /*!< Parity error */ 181 #define LL_USART_CR2_LBDIE USART_CR2_LBDIE /*!< LIN break detection interrupt enable */ 182 #define LL_USART_CR3_EIE USART_CR3_EIE /*!< Error interrupt enable */ 183 #define LL_USART_CR3_CTSIE USART_CR3_CTSIE /*!< CTS interrupt enable */ 184 /** 185 * @} 186 */ 187 188 /** @defgroup USART_LL_EC_DIRECTION Communication Direction 189 * @{ 190 */ 191 #define LL_USART_DIRECTION_NONE 0x00000000U /*!< Transmitter and Receiver are disabled */ 192 #define LL_USART_DIRECTION_RX USART_CR1_RE /*!< Transmitter is disabled and Receiver is enabled */ 193 #define LL_USART_DIRECTION_TX USART_CR1_TE /*!< Transmitter is enabled and Receiver is disabled */ 194 #define LL_USART_DIRECTION_TX_RX (USART_CR1_TE |USART_CR1_RE) /*!< Transmitter and Receiver are enabled */ 195 /** 196 * @} 197 */ 198 199 /** @defgroup USART_LL_EC_PARITY Parity Control 200 * @{ 201 */ 202 #define LL_USART_PARITY_NONE 0x00000000U /*!< Parity control disabled */ 203 #define LL_USART_PARITY_EVEN USART_CR1_PCE /*!< Parity control enabled and Even Parity is selected */ 204 #define LL_USART_PARITY_ODD (USART_CR1_PCE | USART_CR1_PS) /*!< Parity control enabled and Odd Parity is selected */ 205 /** 206 * @} 207 */ 208 209 /** @defgroup USART_LL_EC_WAKEUP Wakeup 210 * @{ 211 */ 212 #define LL_USART_WAKEUP_IDLELINE 0x00000000U /*!< USART wake up from Mute mode on Idle Line */ 213 #define LL_USART_WAKEUP_ADDRESSMARK USART_CR1_WAKE /*!< USART wake up from Mute mode on Address Mark */ 214 /** 215 * @} 216 */ 217 218 /** @defgroup USART_LL_EC_DATAWIDTH Datawidth 219 * @{ 220 */ 221 #define LL_USART_DATAWIDTH_8B 0x00000000U /*!< 8 bits word length : Start bit, 8 data bits, n stop bits */ 222 #define LL_USART_DATAWIDTH_9B USART_CR1_M /*!< 9 bits word length : Start bit, 9 data bits, n stop bits */ 223 /** 224 * @} 225 */ 226 227 /** @defgroup USART_LL_EC_OVERSAMPLING Oversampling 228 * @{ 229 */ 230 #define LL_USART_OVERSAMPLING_16 0x00000000U /*!< Oversampling by 16 */ 231 #if defined(USART_CR1_OVER8) 232 #define LL_USART_OVERSAMPLING_8 USART_CR1_OVER8 /*!< Oversampling by 8 */ 233 #endif /* USART_OverSampling_Feature */ 234 /** 235 * @} 236 */ 237 238 #if defined(USE_FULL_LL_DRIVER) 239 /** @defgroup USART_LL_EC_CLOCK Clock Signal 240 * @{ 241 */ 242 243 #define LL_USART_CLOCK_DISABLE 0x00000000U /*!< Clock signal not provided */ 244 #define LL_USART_CLOCK_ENABLE USART_CR2_CLKEN /*!< Clock signal provided */ 245 /** 246 * @} 247 */ 248 #endif /*USE_FULL_LL_DRIVER*/ 249 250 /** @defgroup USART_LL_EC_LASTCLKPULSE Last Clock Pulse 251 * @{ 252 */ 253 #define LL_USART_LASTCLKPULSE_NO_OUTPUT 0x00000000U /*!< The clock pulse of the last data bit is not output to the SCLK pin */ 254 #define LL_USART_LASTCLKPULSE_OUTPUT USART_CR2_LBCL /*!< The clock pulse of the last data bit is output to the SCLK pin */ 255 /** 256 * @} 257 */ 258 259 /** @defgroup USART_LL_EC_PHASE Clock Phase 260 * @{ 261 */ 262 #define LL_USART_PHASE_1EDGE 0x00000000U /*!< The first clock transition is the first data capture edge */ 263 #define LL_USART_PHASE_2EDGE USART_CR2_CPHA /*!< The second clock transition is the first data capture edge */ 264 /** 265 * @} 266 */ 267 268 /** @defgroup USART_LL_EC_POLARITY Clock Polarity 269 * @{ 270 */ 271 #define LL_USART_POLARITY_LOW 0x00000000U /*!< Steady low value on SCLK pin outside transmission window*/ 272 #define LL_USART_POLARITY_HIGH USART_CR2_CPOL /*!< Steady high value on SCLK pin outside transmission window */ 273 /** 274 * @} 275 */ 276 277 /** @defgroup USART_LL_EC_STOPBITS Stop Bits 278 * @{ 279 */ 280 #define LL_USART_STOPBITS_0_5 USART_CR2_STOP_0 /*!< 0.5 stop bit */ 281 #define LL_USART_STOPBITS_1 0x00000000U /*!< 1 stop bit */ 282 #define LL_USART_STOPBITS_1_5 (USART_CR2_STOP_0 | USART_CR2_STOP_1) /*!< 1.5 stop bits */ 283 #define LL_USART_STOPBITS_2 USART_CR2_STOP_1 /*!< 2 stop bits */ 284 /** 285 * @} 286 */ 287 288 /** @defgroup USART_LL_EC_HWCONTROL Hardware Control 289 * @{ 290 */ 291 #define LL_USART_HWCONTROL_NONE 0x00000000U /*!< CTS and RTS hardware flow control disabled */ 292 #define LL_USART_HWCONTROL_RTS USART_CR3_RTSE /*!< RTS output enabled, data is only requested when there is space in the receive buffer */ 293 #define LL_USART_HWCONTROL_CTS USART_CR3_CTSE /*!< CTS mode enabled, data is only transmitted when the nCTS input is asserted (tied to 0) */ 294 #define LL_USART_HWCONTROL_RTS_CTS (USART_CR3_RTSE | USART_CR3_CTSE) /*!< CTS and RTS hardware flow control enabled */ 295 /** 296 * @} 297 */ 298 299 /** @defgroup USART_LL_EC_IRDA_POWER IrDA Power 300 * @{ 301 */ 302 #define LL_USART_IRDA_POWER_NORMAL 0x00000000U /*!< IrDA normal power mode */ 303 #define LL_USART_IRDA_POWER_LOW USART_CR3_IRLP /*!< IrDA low power mode */ 304 /** 305 * @} 306 */ 307 308 /** @defgroup USART_LL_EC_LINBREAK_DETECT LIN Break Detection Length 309 * @{ 310 */ 311 #define LL_USART_LINBREAK_DETECT_10B 0x00000000U /*!< 10-bit break detection method selected */ 312 #define LL_USART_LINBREAK_DETECT_11B USART_CR2_LBDL /*!< 11-bit break detection method selected */ 313 /** 314 * @} 315 */ 316 317 /** 318 * @} 319 */ 320 321 /* Exported macro ------------------------------------------------------------*/ 322 /** @defgroup USART_LL_Exported_Macros USART Exported Macros 323 * @{ 324 */ 325 326 /** @defgroup USART_LL_EM_WRITE_READ Common Write and read registers Macros 327 * @{ 328 */ 329 330 /** 331 * @brief Write a value in USART register 332 * @param __INSTANCE__ USART Instance 333 * @param __REG__ Register to be written 334 * @param __VALUE__ Value to be written in the register 335 * @retval None 336 */ 337 #define LL_USART_WriteReg(__INSTANCE__, __REG__, __VALUE__) WRITE_REG(__INSTANCE__->__REG__, (__VALUE__)) 338 339 /** 340 * @brief Read a value in USART register 341 * @param __INSTANCE__ USART Instance 342 * @param __REG__ Register to be read 343 * @retval Register value 344 */ 345 #define LL_USART_ReadReg(__INSTANCE__, __REG__) READ_REG(__INSTANCE__->__REG__) 346 /** 347 * @} 348 */ 349 350 /** @defgroup USART_LL_EM_Exported_Macros_Helper Exported Macros Helper 351 * @{ 352 */ 353 354 /** 355 * @brief Compute USARTDIV value according to Peripheral Clock and 356 * expected Baud Rate in 8 bits sampling mode (32 bits value of USARTDIV is returned) 357 * @param __PERIPHCLK__ Peripheral Clock frequency used for USART instance 358 * @param __BAUDRATE__ Baud rate value to achieve 359 * @retval USARTDIV value to be used for BRR register filling in OverSampling_8 case 360 */ 361 #define __LL_USART_DIV_SAMPLING8_100(__PERIPHCLK__, __BAUDRATE__) (((__PERIPHCLK__)*25)/(2*(__BAUDRATE__))) 362 #define __LL_USART_DIVMANT_SAMPLING8(__PERIPHCLK__, __BAUDRATE__) (__LL_USART_DIV_SAMPLING8_100((__PERIPHCLK__), (__BAUDRATE__))/100) 363 #define __LL_USART_DIVFRAQ_SAMPLING8(__PERIPHCLK__, __BAUDRATE__) (((__LL_USART_DIV_SAMPLING8_100((__PERIPHCLK__), (__BAUDRATE__)) - (__LL_USART_DIVMANT_SAMPLING8((__PERIPHCLK__), (__BAUDRATE__)) * 100)) * 8\ 364 + 50) / 100) 365 /* UART BRR = mantissa + overflow + fraction 366 = (UART DIVMANT << 4) + ((UART DIVFRAQ & 0xF8) << 1) + (UART DIVFRAQ & 0x07) */ 367 #define __LL_USART_DIV_SAMPLING8(__PERIPHCLK__, __BAUDRATE__) (((__LL_USART_DIVMANT_SAMPLING8((__PERIPHCLK__), (__BAUDRATE__)) << 4) + \ 368 ((__LL_USART_DIVFRAQ_SAMPLING8((__PERIPHCLK__), (__BAUDRATE__)) & 0xF8) << 1)) + \ 369 (__LL_USART_DIVFRAQ_SAMPLING8((__PERIPHCLK__), (__BAUDRATE__)) & 0x07)) 370 371 /** 372 * @brief Compute USARTDIV value according to Peripheral Clock and 373 * expected Baud Rate in 16 bits sampling mode (32 bits value of USARTDIV is returned) 374 * @param __PERIPHCLK__ Peripheral Clock frequency used for USART instance 375 * @param __BAUDRATE__ Baud rate value to achieve 376 * @retval USARTDIV value to be used for BRR register filling in OverSampling_16 case 377 */ 378 #define __LL_USART_DIV_SAMPLING16_100(__PERIPHCLK__, __BAUDRATE__) (((__PERIPHCLK__)*25)/(4*(__BAUDRATE__))) 379 #define __LL_USART_DIVMANT_SAMPLING16(__PERIPHCLK__, __BAUDRATE__) (__LL_USART_DIV_SAMPLING16_100((__PERIPHCLK__), (__BAUDRATE__))/100) 380 #define __LL_USART_DIVFRAQ_SAMPLING16(__PERIPHCLK__, __BAUDRATE__) ((((__LL_USART_DIV_SAMPLING16_100((__PERIPHCLK__), (__BAUDRATE__)) - (__LL_USART_DIVMANT_SAMPLING16((__PERIPHCLK__), (__BAUDRATE__)) * 100)) * 16)\ 381 + 50) / 100) 382 /* USART BRR = mantissa + overflow + fraction 383 = (USART DIVMANT << 4) + (USART DIVFRAQ & 0xF0) + (USART DIVFRAQ & 0x0F) */ 384 #define __LL_USART_DIV_SAMPLING16(__PERIPHCLK__, __BAUDRATE__) (((__LL_USART_DIVMANT_SAMPLING16((__PERIPHCLK__), (__BAUDRATE__)) << 4) + \ 385 (__LL_USART_DIVFRAQ_SAMPLING16((__PERIPHCLK__), (__BAUDRATE__)) & 0xF0)) + \ 386 (__LL_USART_DIVFRAQ_SAMPLING16((__PERIPHCLK__), (__BAUDRATE__)) & 0x0F)) 387 388 /** 389 * @} 390 */ 391 392 /** 393 * @} 394 */ 395 396 /* Exported functions --------------------------------------------------------*/ 397 398 /** @defgroup USART_LL_Exported_Functions USART Exported Functions 399 * @{ 400 */ 401 402 /** @defgroup USART_LL_EF_Configuration Configuration functions 403 * @{ 404 */ 405 406 /** 407 * @brief USART Enable 408 * @rmtoll CR1 UE LL_USART_Enable 409 * @param USARTx USART Instance 410 * @retval None 411 */ 412 __STATIC_INLINE void LL_USART_Enable(USART_TypeDef *USARTx) 413 { 414 SET_BIT(USARTx->CR1, USART_CR1_UE); 415 } 416 417 /** 418 * @brief USART Disable (all USART prescalers and outputs are disabled) 419 * @note When USART is disabled, USART prescalers and outputs are stopped immediately, 420 * and current operations are discarded. The configuration of the USART is kept, but all the status 421 * flags, in the USARTx_SR are set to their default values. 422 * @rmtoll CR1 UE LL_USART_Disable 423 * @param USARTx USART Instance 424 * @retval None 425 */ 426 __STATIC_INLINE void LL_USART_Disable(USART_TypeDef *USARTx) 427 { 428 CLEAR_BIT(USARTx->CR1, USART_CR1_UE); 429 } 430 431 /** 432 * @brief Indicate if USART is enabled 433 * @rmtoll CR1 UE LL_USART_IsEnabled 434 * @param USARTx USART Instance 435 * @retval State of bit (1 or 0). 436 */ 437 __STATIC_INLINE uint32_t LL_USART_IsEnabled(const USART_TypeDef *USARTx) 438 { 439 return (READ_BIT(USARTx->CR1, USART_CR1_UE) == (USART_CR1_UE)); 440 } 441 442 /** 443 * @brief Receiver Enable (Receiver is enabled and begins searching for a start bit) 444 * @rmtoll CR1 RE LL_USART_EnableDirectionRx 445 * @param USARTx USART Instance 446 * @retval None 447 */ 448 __STATIC_INLINE void LL_USART_EnableDirectionRx(USART_TypeDef *USARTx) 449 { 450 ATOMIC_SET_BIT(USARTx->CR1, USART_CR1_RE); 451 } 452 453 /** 454 * @brief Receiver Disable 455 * @rmtoll CR1 RE LL_USART_DisableDirectionRx 456 * @param USARTx USART Instance 457 * @retval None 458 */ 459 __STATIC_INLINE void LL_USART_DisableDirectionRx(USART_TypeDef *USARTx) 460 { 461 ATOMIC_CLEAR_BIT(USARTx->CR1, USART_CR1_RE); 462 } 463 464 /** 465 * @brief Transmitter Enable 466 * @rmtoll CR1 TE LL_USART_EnableDirectionTx 467 * @param USARTx USART Instance 468 * @retval None 469 */ 470 __STATIC_INLINE void LL_USART_EnableDirectionTx(USART_TypeDef *USARTx) 471 { 472 ATOMIC_SET_BIT(USARTx->CR1, USART_CR1_TE); 473 } 474 475 /** 476 * @brief Transmitter Disable 477 * @rmtoll CR1 TE LL_USART_DisableDirectionTx 478 * @param USARTx USART Instance 479 * @retval None 480 */ 481 __STATIC_INLINE void LL_USART_DisableDirectionTx(USART_TypeDef *USARTx) 482 { 483 ATOMIC_CLEAR_BIT(USARTx->CR1, USART_CR1_TE); 484 } 485 486 /** 487 * @brief Configure simultaneously enabled/disabled states 488 * of Transmitter and Receiver 489 * @rmtoll CR1 RE LL_USART_SetTransferDirection\n 490 * CR1 TE LL_USART_SetTransferDirection 491 * @param USARTx USART Instance 492 * @param TransferDirection This parameter can be one of the following values: 493 * @arg @ref LL_USART_DIRECTION_NONE 494 * @arg @ref LL_USART_DIRECTION_RX 495 * @arg @ref LL_USART_DIRECTION_TX 496 * @arg @ref LL_USART_DIRECTION_TX_RX 497 * @retval None 498 */ 499 __STATIC_INLINE void LL_USART_SetTransferDirection(USART_TypeDef *USARTx, uint32_t TransferDirection) 500 { 501 ATOMIC_MODIFY_REG(USARTx->CR1, USART_CR1_RE | USART_CR1_TE, TransferDirection); 502 } 503 504 /** 505 * @brief Return enabled/disabled states of Transmitter and Receiver 506 * @rmtoll CR1 RE LL_USART_GetTransferDirection\n 507 * CR1 TE LL_USART_GetTransferDirection 508 * @param USARTx USART Instance 509 * @retval Returned value can be one of the following values: 510 * @arg @ref LL_USART_DIRECTION_NONE 511 * @arg @ref LL_USART_DIRECTION_RX 512 * @arg @ref LL_USART_DIRECTION_TX 513 * @arg @ref LL_USART_DIRECTION_TX_RX 514 */ 515 __STATIC_INLINE uint32_t LL_USART_GetTransferDirection(const USART_TypeDef *USARTx) 516 { 517 return (uint32_t)(READ_BIT(USARTx->CR1, USART_CR1_RE | USART_CR1_TE)); 518 } 519 520 /** 521 * @brief Configure Parity (enabled/disabled and parity mode if enabled). 522 * @note This function selects if hardware parity control (generation and detection) is enabled or disabled. 523 * When the parity control is enabled (Odd or Even), computed parity bit is inserted at the MSB position 524 * (9th or 8th bit depending on data width) and parity is checked on the received data. 525 * @rmtoll CR1 PS LL_USART_SetParity\n 526 * CR1 PCE LL_USART_SetParity 527 * @param USARTx USART Instance 528 * @param Parity This parameter can be one of the following values: 529 * @arg @ref LL_USART_PARITY_NONE 530 * @arg @ref LL_USART_PARITY_EVEN 531 * @arg @ref LL_USART_PARITY_ODD 532 * @retval None 533 */ 534 __STATIC_INLINE void LL_USART_SetParity(USART_TypeDef *USARTx, uint32_t Parity) 535 { 536 MODIFY_REG(USARTx->CR1, USART_CR1_PS | USART_CR1_PCE, Parity); 537 } 538 539 /** 540 * @brief Return Parity configuration (enabled/disabled and parity mode if enabled) 541 * @rmtoll CR1 PS LL_USART_GetParity\n 542 * CR1 PCE LL_USART_GetParity 543 * @param USARTx USART Instance 544 * @retval Returned value can be one of the following values: 545 * @arg @ref LL_USART_PARITY_NONE 546 * @arg @ref LL_USART_PARITY_EVEN 547 * @arg @ref LL_USART_PARITY_ODD 548 */ 549 __STATIC_INLINE uint32_t LL_USART_GetParity(const USART_TypeDef *USARTx) 550 { 551 return (uint32_t)(READ_BIT(USARTx->CR1, USART_CR1_PS | USART_CR1_PCE)); 552 } 553 554 /** 555 * @brief Set Receiver Wake Up method from Mute mode. 556 * @rmtoll CR1 WAKE LL_USART_SetWakeUpMethod 557 * @param USARTx USART Instance 558 * @param Method This parameter can be one of the following values: 559 * @arg @ref LL_USART_WAKEUP_IDLELINE 560 * @arg @ref LL_USART_WAKEUP_ADDRESSMARK 561 * @retval None 562 */ 563 __STATIC_INLINE void LL_USART_SetWakeUpMethod(USART_TypeDef *USARTx, uint32_t Method) 564 { 565 MODIFY_REG(USARTx->CR1, USART_CR1_WAKE, Method); 566 } 567 568 /** 569 * @brief Return Receiver Wake Up method from Mute mode 570 * @rmtoll CR1 WAKE LL_USART_GetWakeUpMethod 571 * @param USARTx USART Instance 572 * @retval Returned value can be one of the following values: 573 * @arg @ref LL_USART_WAKEUP_IDLELINE 574 * @arg @ref LL_USART_WAKEUP_ADDRESSMARK 575 */ 576 __STATIC_INLINE uint32_t LL_USART_GetWakeUpMethod(const USART_TypeDef *USARTx) 577 { 578 return (uint32_t)(READ_BIT(USARTx->CR1, USART_CR1_WAKE)); 579 } 580 581 /** 582 * @brief Set Word length (i.e. nb of data bits, excluding start and stop bits) 583 * @rmtoll CR1 M LL_USART_SetDataWidth 584 * @param USARTx USART Instance 585 * @param DataWidth This parameter can be one of the following values: 586 * @arg @ref LL_USART_DATAWIDTH_8B 587 * @arg @ref LL_USART_DATAWIDTH_9B 588 * @retval None 589 */ 590 __STATIC_INLINE void LL_USART_SetDataWidth(USART_TypeDef *USARTx, uint32_t DataWidth) 591 { 592 MODIFY_REG(USARTx->CR1, USART_CR1_M, DataWidth); 593 } 594 595 /** 596 * @brief Return Word length (i.e. nb of data bits, excluding start and stop bits) 597 * @rmtoll CR1 M LL_USART_GetDataWidth 598 * @param USARTx USART Instance 599 * @retval Returned value can be one of the following values: 600 * @arg @ref LL_USART_DATAWIDTH_8B 601 * @arg @ref LL_USART_DATAWIDTH_9B 602 */ 603 __STATIC_INLINE uint32_t LL_USART_GetDataWidth(const USART_TypeDef *USARTx) 604 { 605 return (uint32_t)(READ_BIT(USARTx->CR1, USART_CR1_M)); 606 } 607 608 #if defined(USART_CR1_OVER8) 609 /** 610 * @brief Set Oversampling to 8-bit or 16-bit mode 611 * @rmtoll CR1 OVER8 LL_USART_SetOverSampling 612 * @param USARTx USART Instance 613 * @param OverSampling This parameter can be one of the following values: 614 * @arg @ref LL_USART_OVERSAMPLING_16 615 * @arg @ref LL_USART_OVERSAMPLING_8 616 * @retval None 617 */ 618 __STATIC_INLINE void LL_USART_SetOverSampling(USART_TypeDef *USARTx, uint32_t OverSampling) 619 { 620 MODIFY_REG(USARTx->CR1, USART_CR1_OVER8, OverSampling); 621 } 622 623 /** 624 * @brief Return Oversampling mode 625 * @rmtoll CR1 OVER8 LL_USART_GetOverSampling 626 * @param USARTx USART Instance 627 * @retval Returned value can be one of the following values: 628 * @arg @ref LL_USART_OVERSAMPLING_16 629 * @arg @ref LL_USART_OVERSAMPLING_8 630 */ 631 __STATIC_INLINE uint32_t LL_USART_GetOverSampling(const USART_TypeDef *USARTx) 632 { 633 return (uint32_t)(READ_BIT(USARTx->CR1, USART_CR1_OVER8)); 634 } 635 636 #endif /* USART_OverSampling_Feature */ 637 /** 638 * @brief Configure if Clock pulse of the last data bit is output to the SCLK pin or not 639 * @note Macro IS_USART_INSTANCE(USARTx) can be used to check whether or not 640 * Synchronous mode is supported by the USARTx instance. 641 * @rmtoll CR2 LBCL LL_USART_SetLastClkPulseOutput 642 * @param USARTx USART Instance 643 * @param LastBitClockPulse This parameter can be one of the following values: 644 * @arg @ref LL_USART_LASTCLKPULSE_NO_OUTPUT 645 * @arg @ref LL_USART_LASTCLKPULSE_OUTPUT 646 * @retval None 647 */ 648 __STATIC_INLINE void LL_USART_SetLastClkPulseOutput(USART_TypeDef *USARTx, uint32_t LastBitClockPulse) 649 { 650 MODIFY_REG(USARTx->CR2, USART_CR2_LBCL, LastBitClockPulse); 651 } 652 653 /** 654 * @brief Retrieve Clock pulse of the last data bit output configuration 655 * (Last bit Clock pulse output to the SCLK pin or not) 656 * @note Macro IS_USART_INSTANCE(USARTx) can be used to check whether or not 657 * Synchronous mode is supported by the USARTx instance. 658 * @rmtoll CR2 LBCL LL_USART_GetLastClkPulseOutput 659 * @param USARTx USART Instance 660 * @retval Returned value can be one of the following values: 661 * @arg @ref LL_USART_LASTCLKPULSE_NO_OUTPUT 662 * @arg @ref LL_USART_LASTCLKPULSE_OUTPUT 663 */ 664 __STATIC_INLINE uint32_t LL_USART_GetLastClkPulseOutput(const USART_TypeDef *USARTx) 665 { 666 return (uint32_t)(READ_BIT(USARTx->CR2, USART_CR2_LBCL)); 667 } 668 669 /** 670 * @brief Select the phase of the clock output on the SCLK pin in synchronous mode 671 * @note Macro IS_USART_INSTANCE(USARTx) can be used to check whether or not 672 * Synchronous mode is supported by the USARTx instance. 673 * @rmtoll CR2 CPHA LL_USART_SetClockPhase 674 * @param USARTx USART Instance 675 * @param ClockPhase This parameter can be one of the following values: 676 * @arg @ref LL_USART_PHASE_1EDGE 677 * @arg @ref LL_USART_PHASE_2EDGE 678 * @retval None 679 */ 680 __STATIC_INLINE void LL_USART_SetClockPhase(USART_TypeDef *USARTx, uint32_t ClockPhase) 681 { 682 MODIFY_REG(USARTx->CR2, USART_CR2_CPHA, ClockPhase); 683 } 684 685 /** 686 * @brief Return phase of the clock output on the SCLK pin in synchronous mode 687 * @note Macro IS_USART_INSTANCE(USARTx) can be used to check whether or not 688 * Synchronous mode is supported by the USARTx instance. 689 * @rmtoll CR2 CPHA LL_USART_GetClockPhase 690 * @param USARTx USART Instance 691 * @retval Returned value can be one of the following values: 692 * @arg @ref LL_USART_PHASE_1EDGE 693 * @arg @ref LL_USART_PHASE_2EDGE 694 */ 695 __STATIC_INLINE uint32_t LL_USART_GetClockPhase(const USART_TypeDef *USARTx) 696 { 697 return (uint32_t)(READ_BIT(USARTx->CR2, USART_CR2_CPHA)); 698 } 699 700 /** 701 * @brief Select the polarity of the clock output on the SCLK pin in synchronous mode 702 * @note Macro IS_USART_INSTANCE(USARTx) can be used to check whether or not 703 * Synchronous mode is supported by the USARTx instance. 704 * @rmtoll CR2 CPOL LL_USART_SetClockPolarity 705 * @param USARTx USART Instance 706 * @param ClockPolarity This parameter can be one of the following values: 707 * @arg @ref LL_USART_POLARITY_LOW 708 * @arg @ref LL_USART_POLARITY_HIGH 709 * @retval None 710 */ 711 __STATIC_INLINE void LL_USART_SetClockPolarity(USART_TypeDef *USARTx, uint32_t ClockPolarity) 712 { 713 MODIFY_REG(USARTx->CR2, USART_CR2_CPOL, ClockPolarity); 714 } 715 716 /** 717 * @brief Return polarity of the clock output on the SCLK pin in synchronous mode 718 * @note Macro IS_USART_INSTANCE(USARTx) can be used to check whether or not 719 * Synchronous mode is supported by the USARTx instance. 720 * @rmtoll CR2 CPOL LL_USART_GetClockPolarity 721 * @param USARTx USART Instance 722 * @retval Returned value can be one of the following values: 723 * @arg @ref LL_USART_POLARITY_LOW 724 * @arg @ref LL_USART_POLARITY_HIGH 725 */ 726 __STATIC_INLINE uint32_t LL_USART_GetClockPolarity(const USART_TypeDef *USARTx) 727 { 728 return (uint32_t)(READ_BIT(USARTx->CR2, USART_CR2_CPOL)); 729 } 730 731 /** 732 * @brief Configure Clock signal format (Phase Polarity and choice about output of last bit clock pulse) 733 * @note Macro IS_USART_INSTANCE(USARTx) can be used to check whether or not 734 * Synchronous mode is supported by the USARTx instance. 735 * @note Call of this function is equivalent to following function call sequence : 736 * - Clock Phase configuration using @ref LL_USART_SetClockPhase() function 737 * - Clock Polarity configuration using @ref LL_USART_SetClockPolarity() function 738 * - Output of Last bit Clock pulse configuration using @ref LL_USART_SetLastClkPulseOutput() function 739 * @rmtoll CR2 CPHA LL_USART_ConfigClock\n 740 * CR2 CPOL LL_USART_ConfigClock\n 741 * CR2 LBCL LL_USART_ConfigClock 742 * @param USARTx USART Instance 743 * @param Phase This parameter can be one of the following values: 744 * @arg @ref LL_USART_PHASE_1EDGE 745 * @arg @ref LL_USART_PHASE_2EDGE 746 * @param Polarity This parameter can be one of the following values: 747 * @arg @ref LL_USART_POLARITY_LOW 748 * @arg @ref LL_USART_POLARITY_HIGH 749 * @param LBCPOutput This parameter can be one of the following values: 750 * @arg @ref LL_USART_LASTCLKPULSE_NO_OUTPUT 751 * @arg @ref LL_USART_LASTCLKPULSE_OUTPUT 752 * @retval None 753 */ 754 __STATIC_INLINE void LL_USART_ConfigClock(USART_TypeDef *USARTx, uint32_t Phase, uint32_t Polarity, uint32_t LBCPOutput) 755 { 756 MODIFY_REG(USARTx->CR2, USART_CR2_CPHA | USART_CR2_CPOL | USART_CR2_LBCL, Phase | Polarity | LBCPOutput); 757 } 758 759 /** 760 * @brief Enable Clock output on SCLK pin 761 * @note Macro IS_USART_INSTANCE(USARTx) can be used to check whether or not 762 * Synchronous mode is supported by the USARTx instance. 763 * @rmtoll CR2 CLKEN LL_USART_EnableSCLKOutput 764 * @param USARTx USART Instance 765 * @retval None 766 */ 767 __STATIC_INLINE void LL_USART_EnableSCLKOutput(USART_TypeDef *USARTx) 768 { 769 SET_BIT(USARTx->CR2, USART_CR2_CLKEN); 770 } 771 772 /** 773 * @brief Disable Clock output on SCLK pin 774 * @note Macro IS_USART_INSTANCE(USARTx) can be used to check whether or not 775 * Synchronous mode is supported by the USARTx instance. 776 * @rmtoll CR2 CLKEN LL_USART_DisableSCLKOutput 777 * @param USARTx USART Instance 778 * @retval None 779 */ 780 __STATIC_INLINE void LL_USART_DisableSCLKOutput(USART_TypeDef *USARTx) 781 { 782 CLEAR_BIT(USARTx->CR2, USART_CR2_CLKEN); 783 } 784 785 /** 786 * @brief Indicate if Clock output on SCLK pin is enabled 787 * @note Macro IS_USART_INSTANCE(USARTx) can be used to check whether or not 788 * Synchronous mode is supported by the USARTx instance. 789 * @rmtoll CR2 CLKEN LL_USART_IsEnabledSCLKOutput 790 * @param USARTx USART Instance 791 * @retval State of bit (1 or 0). 792 */ 793 __STATIC_INLINE uint32_t LL_USART_IsEnabledSCLKOutput(const USART_TypeDef *USARTx) 794 { 795 return (READ_BIT(USARTx->CR2, USART_CR2_CLKEN) == (USART_CR2_CLKEN)); 796 } 797 798 /** 799 * @brief Set the length of the stop bits 800 * @rmtoll CR2 STOP LL_USART_SetStopBitsLength 801 * @param USARTx USART Instance 802 * @param StopBits This parameter can be one of the following values: 803 * @arg @ref LL_USART_STOPBITS_0_5 804 * @arg @ref LL_USART_STOPBITS_1 805 * @arg @ref LL_USART_STOPBITS_1_5 806 * @arg @ref LL_USART_STOPBITS_2 807 * @retval None 808 */ 809 __STATIC_INLINE void LL_USART_SetStopBitsLength(USART_TypeDef *USARTx, uint32_t StopBits) 810 { 811 MODIFY_REG(USARTx->CR2, USART_CR2_STOP, StopBits); 812 } 813 814 /** 815 * @brief Retrieve the length of the stop bits 816 * @rmtoll CR2 STOP LL_USART_GetStopBitsLength 817 * @param USARTx USART Instance 818 * @retval Returned value can be one of the following values: 819 * @arg @ref LL_USART_STOPBITS_0_5 820 * @arg @ref LL_USART_STOPBITS_1 821 * @arg @ref LL_USART_STOPBITS_1_5 822 * @arg @ref LL_USART_STOPBITS_2 823 */ 824 __STATIC_INLINE uint32_t LL_USART_GetStopBitsLength(const USART_TypeDef *USARTx) 825 { 826 return (uint32_t)(READ_BIT(USARTx->CR2, USART_CR2_STOP)); 827 } 828 829 /** 830 * @brief Configure Character frame format (Datawidth, Parity control, Stop Bits) 831 * @note Call of this function is equivalent to following function call sequence : 832 * - Data Width configuration using @ref LL_USART_SetDataWidth() function 833 * - Parity Control and mode configuration using @ref LL_USART_SetParity() function 834 * - Stop bits configuration using @ref LL_USART_SetStopBitsLength() function 835 * @rmtoll CR1 PS LL_USART_ConfigCharacter\n 836 * CR1 PCE LL_USART_ConfigCharacter\n 837 * CR1 M LL_USART_ConfigCharacter\n 838 * CR2 STOP LL_USART_ConfigCharacter 839 * @param USARTx USART Instance 840 * @param DataWidth This parameter can be one of the following values: 841 * @arg @ref LL_USART_DATAWIDTH_8B 842 * @arg @ref LL_USART_DATAWIDTH_9B 843 * @param Parity This parameter can be one of the following values: 844 * @arg @ref LL_USART_PARITY_NONE 845 * @arg @ref LL_USART_PARITY_EVEN 846 * @arg @ref LL_USART_PARITY_ODD 847 * @param StopBits This parameter can be one of the following values: 848 * @arg @ref LL_USART_STOPBITS_0_5 849 * @arg @ref LL_USART_STOPBITS_1 850 * @arg @ref LL_USART_STOPBITS_1_5 851 * @arg @ref LL_USART_STOPBITS_2 852 * @retval None 853 */ 854 __STATIC_INLINE void LL_USART_ConfigCharacter(USART_TypeDef *USARTx, uint32_t DataWidth, uint32_t Parity, 855 uint32_t StopBits) 856 { 857 MODIFY_REG(USARTx->CR1, USART_CR1_PS | USART_CR1_PCE | USART_CR1_M, Parity | DataWidth); 858 MODIFY_REG(USARTx->CR2, USART_CR2_STOP, StopBits); 859 } 860 861 /** 862 * @brief Set Address of the USART node. 863 * @note This is used in multiprocessor communication during Mute mode or Stop mode, 864 * for wake up with address mark detection. 865 * @rmtoll CR2 ADD LL_USART_SetNodeAddress 866 * @param USARTx USART Instance 867 * @param NodeAddress 4 bit Address of the USART node. 868 * @retval None 869 */ 870 __STATIC_INLINE void LL_USART_SetNodeAddress(USART_TypeDef *USARTx, uint32_t NodeAddress) 871 { 872 MODIFY_REG(USARTx->CR2, USART_CR2_ADD, (NodeAddress & USART_CR2_ADD)); 873 } 874 875 /** 876 * @brief Return 4 bit Address of the USART node as set in ADD field of CR2. 877 * @note only 4bits (b3-b0) of returned value are relevant (b31-b4 are not relevant) 878 * @rmtoll CR2 ADD LL_USART_GetNodeAddress 879 * @param USARTx USART Instance 880 * @retval Address of the USART node (Value between Min_Data=0 and Max_Data=255) 881 */ 882 __STATIC_INLINE uint32_t LL_USART_GetNodeAddress(const USART_TypeDef *USARTx) 883 { 884 return (uint32_t)(READ_BIT(USARTx->CR2, USART_CR2_ADD)); 885 } 886 887 /** 888 * @brief Enable RTS HW Flow Control 889 * @note Macro IS_UART_HWFLOW_INSTANCE(USARTx) can be used to check whether or not 890 * Hardware Flow control feature is supported by the USARTx instance. 891 * @rmtoll CR3 RTSE LL_USART_EnableRTSHWFlowCtrl 892 * @param USARTx USART Instance 893 * @retval None 894 */ 895 __STATIC_INLINE void LL_USART_EnableRTSHWFlowCtrl(USART_TypeDef *USARTx) 896 { 897 SET_BIT(USARTx->CR3, USART_CR3_RTSE); 898 } 899 900 /** 901 * @brief Disable RTS HW Flow Control 902 * @note Macro IS_UART_HWFLOW_INSTANCE(USARTx) can be used to check whether or not 903 * Hardware Flow control feature is supported by the USARTx instance. 904 * @rmtoll CR3 RTSE LL_USART_DisableRTSHWFlowCtrl 905 * @param USARTx USART Instance 906 * @retval None 907 */ 908 __STATIC_INLINE void LL_USART_DisableRTSHWFlowCtrl(USART_TypeDef *USARTx) 909 { 910 CLEAR_BIT(USARTx->CR3, USART_CR3_RTSE); 911 } 912 913 /** 914 * @brief Enable CTS HW Flow Control 915 * @note Macro IS_UART_HWFLOW_INSTANCE(USARTx) can be used to check whether or not 916 * Hardware Flow control feature is supported by the USARTx instance. 917 * @rmtoll CR3 CTSE LL_USART_EnableCTSHWFlowCtrl 918 * @param USARTx USART Instance 919 * @retval None 920 */ 921 __STATIC_INLINE void LL_USART_EnableCTSHWFlowCtrl(USART_TypeDef *USARTx) 922 { 923 SET_BIT(USARTx->CR3, USART_CR3_CTSE); 924 } 925 926 /** 927 * @brief Disable CTS HW Flow Control 928 * @note Macro IS_UART_HWFLOW_INSTANCE(USARTx) can be used to check whether or not 929 * Hardware Flow control feature is supported by the USARTx instance. 930 * @rmtoll CR3 CTSE LL_USART_DisableCTSHWFlowCtrl 931 * @param USARTx USART Instance 932 * @retval None 933 */ 934 __STATIC_INLINE void LL_USART_DisableCTSHWFlowCtrl(USART_TypeDef *USARTx) 935 { 936 CLEAR_BIT(USARTx->CR3, USART_CR3_CTSE); 937 } 938 939 /** 940 * @brief Configure HW Flow Control mode (both CTS and RTS) 941 * @note Macro IS_UART_HWFLOW_INSTANCE(USARTx) can be used to check whether or not 942 * Hardware Flow control feature is supported by the USARTx instance. 943 * @rmtoll CR3 RTSE LL_USART_SetHWFlowCtrl\n 944 * CR3 CTSE LL_USART_SetHWFlowCtrl 945 * @param USARTx USART Instance 946 * @param HardwareFlowControl This parameter can be one of the following values: 947 * @arg @ref LL_USART_HWCONTROL_NONE 948 * @arg @ref LL_USART_HWCONTROL_RTS 949 * @arg @ref LL_USART_HWCONTROL_CTS 950 * @arg @ref LL_USART_HWCONTROL_RTS_CTS 951 * @retval None 952 */ 953 __STATIC_INLINE void LL_USART_SetHWFlowCtrl(USART_TypeDef *USARTx, uint32_t HardwareFlowControl) 954 { 955 MODIFY_REG(USARTx->CR3, USART_CR3_RTSE | USART_CR3_CTSE, HardwareFlowControl); 956 } 957 958 /** 959 * @brief Return HW Flow Control configuration (both CTS and RTS) 960 * @note Macro IS_UART_HWFLOW_INSTANCE(USARTx) can be used to check whether or not 961 * Hardware Flow control feature is supported by the USARTx instance. 962 * @rmtoll CR3 RTSE LL_USART_GetHWFlowCtrl\n 963 * CR3 CTSE LL_USART_GetHWFlowCtrl 964 * @param USARTx USART Instance 965 * @retval Returned value can be one of the following values: 966 * @arg @ref LL_USART_HWCONTROL_NONE 967 * @arg @ref LL_USART_HWCONTROL_RTS 968 * @arg @ref LL_USART_HWCONTROL_CTS 969 * @arg @ref LL_USART_HWCONTROL_RTS_CTS 970 */ 971 __STATIC_INLINE uint32_t LL_USART_GetHWFlowCtrl(const USART_TypeDef *USARTx) 972 { 973 return (uint32_t)(READ_BIT(USARTx->CR3, USART_CR3_RTSE | USART_CR3_CTSE)); 974 } 975 976 #if defined(USART_CR3_ONEBIT) 977 /** 978 * @brief Enable One bit sampling method 979 * @rmtoll CR3 ONEBIT LL_USART_EnableOneBitSamp 980 * @param USARTx USART Instance 981 * @retval None 982 */ 983 __STATIC_INLINE void LL_USART_EnableOneBitSamp(USART_TypeDef *USARTx) 984 { 985 SET_BIT(USARTx->CR3, USART_CR3_ONEBIT); 986 } 987 988 /** 989 * @brief Disable One bit sampling method 990 * @rmtoll CR3 ONEBIT LL_USART_DisableOneBitSamp 991 * @param USARTx USART Instance 992 * @retval None 993 */ 994 __STATIC_INLINE void LL_USART_DisableOneBitSamp(USART_TypeDef *USARTx) 995 { 996 CLEAR_BIT(USARTx->CR3, USART_CR3_ONEBIT); 997 } 998 999 /** 1000 * @brief Indicate if One bit sampling method is enabled 1001 * @rmtoll CR3 ONEBIT LL_USART_IsEnabledOneBitSamp 1002 * @param USARTx USART Instance 1003 * @retval State of bit (1 or 0). 1004 */ 1005 __STATIC_INLINE uint32_t LL_USART_IsEnabledOneBitSamp(const USART_TypeDef *USARTx) 1006 { 1007 return (READ_BIT(USARTx->CR3, USART_CR3_ONEBIT) == (USART_CR3_ONEBIT)); 1008 } 1009 #endif /* USART_OneBitSampling_Feature */ 1010 1011 #if defined(USART_CR1_OVER8) 1012 /** 1013 * @brief Configure USART BRR register for achieving expected Baud Rate value. 1014 * @note Compute and set USARTDIV value in BRR Register (full BRR content) 1015 * according to used Peripheral Clock, Oversampling mode, and expected Baud Rate values 1016 * @note Peripheral clock and Baud rate values provided as function parameters should be valid 1017 * (Baud rate value != 0) 1018 * @rmtoll BRR BRR LL_USART_SetBaudRate 1019 * @param USARTx USART Instance 1020 * @param PeriphClk Peripheral Clock 1021 * @param OverSampling This parameter can be one of the following values: 1022 * @arg @ref LL_USART_OVERSAMPLING_16 1023 * @arg @ref LL_USART_OVERSAMPLING_8 1024 * @param BaudRate Baud Rate 1025 * @retval None 1026 */ 1027 __STATIC_INLINE void LL_USART_SetBaudRate(USART_TypeDef *USARTx, uint32_t PeriphClk, uint32_t OverSampling, 1028 uint32_t BaudRate) 1029 { 1030 if (OverSampling == LL_USART_OVERSAMPLING_8) 1031 { 1032 USARTx->BRR = (uint16_t)(__LL_USART_DIV_SAMPLING8(PeriphClk, BaudRate)); 1033 } 1034 else 1035 { 1036 USARTx->BRR = (uint16_t)(__LL_USART_DIV_SAMPLING16(PeriphClk, BaudRate)); 1037 } 1038 } 1039 1040 /** 1041 * @brief Return current Baud Rate value, according to USARTDIV present in BRR register 1042 * (full BRR content), and to used Peripheral Clock and Oversampling mode values 1043 * @note In case of non-initialized or invalid value stored in BRR register, value 0 will be returned. 1044 * @rmtoll BRR BRR LL_USART_GetBaudRate 1045 * @param USARTx USART Instance 1046 * @param PeriphClk Peripheral Clock 1047 * @param OverSampling This parameter can be one of the following values: 1048 * @arg @ref LL_USART_OVERSAMPLING_16 1049 * @arg @ref LL_USART_OVERSAMPLING_8 1050 * @retval Baud Rate 1051 */ 1052 __STATIC_INLINE uint32_t LL_USART_GetBaudRate(const USART_TypeDef *USARTx, uint32_t PeriphClk, uint32_t OverSampling) 1053 { 1054 uint32_t usartdiv = 0x0U; 1055 uint32_t brrresult = 0x0U; 1056 1057 usartdiv = USARTx->BRR; 1058 1059 if (OverSampling == LL_USART_OVERSAMPLING_8) 1060 { 1061 if ((usartdiv & 0xFFF7U) != 0U) 1062 { 1063 usartdiv = (uint16_t)((usartdiv & 0xFFF0U) | ((usartdiv & 0x0007U) << 1U)) ; 1064 brrresult = (PeriphClk * 2U) / usartdiv; 1065 } 1066 } 1067 else 1068 { 1069 if ((usartdiv & 0xFFFFU) != 0U) 1070 { 1071 brrresult = PeriphClk / usartdiv; 1072 } 1073 } 1074 return (brrresult); 1075 } 1076 #else 1077 /** 1078 * @brief Configure USART BRR register for achieving expected Baud Rate value. 1079 * @note Compute and set USARTDIV value in BRR Register (full BRR content) 1080 * according to used Peripheral Clock, Oversampling mode, and expected Baud Rate values 1081 * @note Peripheral clock and Baud rate values provided as function parameters should be valid 1082 * (Baud rate value != 0) 1083 * @rmtoll BRR BRR LL_USART_SetBaudRate 1084 * @param USARTx USART Instance 1085 * @param PeriphClk Peripheral Clock 1086 * @param BaudRate Baud Rate 1087 * @retval None 1088 */ 1089 __STATIC_INLINE void LL_USART_SetBaudRate(USART_TypeDef *USARTx, uint32_t PeriphClk, uint32_t BaudRate) 1090 { 1091 USARTx->BRR = (uint16_t)(__LL_USART_DIV_SAMPLING16(PeriphClk, BaudRate)); 1092 } 1093 1094 /** 1095 * @brief Return current Baud Rate value, according to USARTDIV present in BRR register 1096 * (full BRR content), and to used Peripheral Clock and Oversampling mode values 1097 * @note In case of non-initialized or invalid value stored in BRR register, value 0 will be returned. 1098 * @rmtoll BRR BRR LL_USART_GetBaudRate 1099 * @param USARTx USART Instance 1100 * @param PeriphClk Peripheral Clock 1101 * @retval Baud Rate 1102 */ 1103 __STATIC_INLINE uint32_t LL_USART_GetBaudRate(const USART_TypeDef *USARTx, uint32_t PeriphClk) 1104 { 1105 uint32_t usartdiv = 0x0U; 1106 uint32_t brrresult = 0x0U; 1107 1108 usartdiv = USARTx->BRR; 1109 1110 if ((usartdiv & 0xFFFFU) != 0U) 1111 { 1112 brrresult = PeriphClk / usartdiv; 1113 } 1114 return (brrresult); 1115 } 1116 #endif /* USART_OverSampling_Feature */ 1117 1118 /** 1119 * @} 1120 */ 1121 1122 /** @defgroup USART_LL_EF_Configuration_IRDA Configuration functions related to Irda feature 1123 * @{ 1124 */ 1125 1126 /** 1127 * @brief Enable IrDA mode 1128 * @note Macro IS_IRDA_INSTANCE(USARTx) can be used to check whether or not 1129 * IrDA feature is supported by the USARTx instance. 1130 * @rmtoll CR3 IREN LL_USART_EnableIrda 1131 * @param USARTx USART Instance 1132 * @retval None 1133 */ 1134 __STATIC_INLINE void LL_USART_EnableIrda(USART_TypeDef *USARTx) 1135 { 1136 SET_BIT(USARTx->CR3, USART_CR3_IREN); 1137 } 1138 1139 /** 1140 * @brief Disable IrDA mode 1141 * @note Macro IS_IRDA_INSTANCE(USARTx) can be used to check whether or not 1142 * IrDA feature is supported by the USARTx instance. 1143 * @rmtoll CR3 IREN LL_USART_DisableIrda 1144 * @param USARTx USART Instance 1145 * @retval None 1146 */ 1147 __STATIC_INLINE void LL_USART_DisableIrda(USART_TypeDef *USARTx) 1148 { 1149 CLEAR_BIT(USARTx->CR3, USART_CR3_IREN); 1150 } 1151 1152 /** 1153 * @brief Indicate if IrDA mode is enabled 1154 * @note Macro IS_IRDA_INSTANCE(USARTx) can be used to check whether or not 1155 * IrDA feature is supported by the USARTx instance. 1156 * @rmtoll CR3 IREN LL_USART_IsEnabledIrda 1157 * @param USARTx USART Instance 1158 * @retval State of bit (1 or 0). 1159 */ 1160 __STATIC_INLINE uint32_t LL_USART_IsEnabledIrda(const USART_TypeDef *USARTx) 1161 { 1162 return (READ_BIT(USARTx->CR3, USART_CR3_IREN) == (USART_CR3_IREN)); 1163 } 1164 1165 /** 1166 * @brief Configure IrDA Power Mode (Normal or Low Power) 1167 * @note Macro IS_IRDA_INSTANCE(USARTx) can be used to check whether or not 1168 * IrDA feature is supported by the USARTx instance. 1169 * @rmtoll CR3 IRLP LL_USART_SetIrdaPowerMode 1170 * @param USARTx USART Instance 1171 * @param PowerMode This parameter can be one of the following values: 1172 * @arg @ref LL_USART_IRDA_POWER_NORMAL 1173 * @arg @ref LL_USART_IRDA_POWER_LOW 1174 * @retval None 1175 */ 1176 __STATIC_INLINE void LL_USART_SetIrdaPowerMode(USART_TypeDef *USARTx, uint32_t PowerMode) 1177 { 1178 MODIFY_REG(USARTx->CR3, USART_CR3_IRLP, PowerMode); 1179 } 1180 1181 /** 1182 * @brief Retrieve IrDA Power Mode configuration (Normal or Low Power) 1183 * @note Macro IS_IRDA_INSTANCE(USARTx) can be used to check whether or not 1184 * IrDA feature is supported by the USARTx instance. 1185 * @rmtoll CR3 IRLP LL_USART_GetIrdaPowerMode 1186 * @param USARTx USART Instance 1187 * @retval Returned value can be one of the following values: 1188 * @arg @ref LL_USART_IRDA_POWER_NORMAL 1189 * @arg @ref LL_USART_PHASE_2EDGE 1190 */ 1191 __STATIC_INLINE uint32_t LL_USART_GetIrdaPowerMode(const USART_TypeDef *USARTx) 1192 { 1193 return (uint32_t)(READ_BIT(USARTx->CR3, USART_CR3_IRLP)); 1194 } 1195 1196 /** 1197 * @brief Set Irda prescaler value, used for dividing the USART clock source 1198 * to achieve the Irda Low Power frequency (8 bits value) 1199 * @note Macro IS_IRDA_INSTANCE(USARTx) can be used to check whether or not 1200 * IrDA feature is supported by the USARTx instance. 1201 * @rmtoll GTPR PSC LL_USART_SetIrdaPrescaler 1202 * @param USARTx USART Instance 1203 * @param PrescalerValue Value between Min_Data=0x00 and Max_Data=0xFF 1204 * @retval None 1205 */ 1206 __STATIC_INLINE void LL_USART_SetIrdaPrescaler(USART_TypeDef *USARTx, uint32_t PrescalerValue) 1207 { 1208 MODIFY_REG(USARTx->GTPR, USART_GTPR_PSC, PrescalerValue); 1209 } 1210 1211 /** 1212 * @brief Return Irda prescaler value, used for dividing the USART clock source 1213 * to achieve the Irda Low Power frequency (8 bits value) 1214 * @note Macro IS_IRDA_INSTANCE(USARTx) can be used to check whether or not 1215 * IrDA feature is supported by the USARTx instance. 1216 * @rmtoll GTPR PSC LL_USART_GetIrdaPrescaler 1217 * @param USARTx USART Instance 1218 * @retval Irda prescaler value (Value between Min_Data=0x00 and Max_Data=0xFF) 1219 */ 1220 __STATIC_INLINE uint32_t LL_USART_GetIrdaPrescaler(const USART_TypeDef *USARTx) 1221 { 1222 return (uint32_t)(READ_BIT(USARTx->GTPR, USART_GTPR_PSC)); 1223 } 1224 1225 /** 1226 * @} 1227 */ 1228 1229 /** @defgroup USART_LL_EF_Configuration_Smartcard Configuration functions related to Smartcard feature 1230 * @{ 1231 */ 1232 1233 /** 1234 * @brief Enable Smartcard NACK transmission 1235 * @note Macro IS_SMARTCARD_INSTANCE(USARTx) can be used to check whether or not 1236 * Smartcard feature is supported by the USARTx instance. 1237 * @rmtoll CR3 NACK LL_USART_EnableSmartcardNACK 1238 * @param USARTx USART Instance 1239 * @retval None 1240 */ 1241 __STATIC_INLINE void LL_USART_EnableSmartcardNACK(USART_TypeDef *USARTx) 1242 { 1243 SET_BIT(USARTx->CR3, USART_CR3_NACK); 1244 } 1245 1246 /** 1247 * @brief Disable Smartcard NACK transmission 1248 * @note Macro IS_SMARTCARD_INSTANCE(USARTx) can be used to check whether or not 1249 * Smartcard feature is supported by the USARTx instance. 1250 * @rmtoll CR3 NACK LL_USART_DisableSmartcardNACK 1251 * @param USARTx USART Instance 1252 * @retval None 1253 */ 1254 __STATIC_INLINE void LL_USART_DisableSmartcardNACK(USART_TypeDef *USARTx) 1255 { 1256 CLEAR_BIT(USARTx->CR3, USART_CR3_NACK); 1257 } 1258 1259 /** 1260 * @brief Indicate if Smartcard NACK transmission is enabled 1261 * @note Macro IS_SMARTCARD_INSTANCE(USARTx) can be used to check whether or not 1262 * Smartcard feature is supported by the USARTx instance. 1263 * @rmtoll CR3 NACK LL_USART_IsEnabledSmartcardNACK 1264 * @param USARTx USART Instance 1265 * @retval State of bit (1 or 0). 1266 */ 1267 __STATIC_INLINE uint32_t LL_USART_IsEnabledSmartcardNACK(const USART_TypeDef *USARTx) 1268 { 1269 return (READ_BIT(USARTx->CR3, USART_CR3_NACK) == (USART_CR3_NACK)); 1270 } 1271 1272 /** 1273 * @brief Enable Smartcard mode 1274 * @note Macro IS_SMARTCARD_INSTANCE(USARTx) can be used to check whether or not 1275 * Smartcard feature is supported by the USARTx instance. 1276 * @rmtoll CR3 SCEN LL_USART_EnableSmartcard 1277 * @param USARTx USART Instance 1278 * @retval None 1279 */ 1280 __STATIC_INLINE void LL_USART_EnableSmartcard(USART_TypeDef *USARTx) 1281 { 1282 SET_BIT(USARTx->CR3, USART_CR3_SCEN); 1283 } 1284 1285 /** 1286 * @brief Disable Smartcard mode 1287 * @note Macro IS_SMARTCARD_INSTANCE(USARTx) can be used to check whether or not 1288 * Smartcard feature is supported by the USARTx instance. 1289 * @rmtoll CR3 SCEN LL_USART_DisableSmartcard 1290 * @param USARTx USART Instance 1291 * @retval None 1292 */ 1293 __STATIC_INLINE void LL_USART_DisableSmartcard(USART_TypeDef *USARTx) 1294 { 1295 CLEAR_BIT(USARTx->CR3, USART_CR3_SCEN); 1296 } 1297 1298 /** 1299 * @brief Indicate if Smartcard mode is enabled 1300 * @note Macro IS_SMARTCARD_INSTANCE(USARTx) can be used to check whether or not 1301 * Smartcard feature is supported by the USARTx instance. 1302 * @rmtoll CR3 SCEN LL_USART_IsEnabledSmartcard 1303 * @param USARTx USART Instance 1304 * @retval State of bit (1 or 0). 1305 */ 1306 __STATIC_INLINE uint32_t LL_USART_IsEnabledSmartcard(const USART_TypeDef *USARTx) 1307 { 1308 return (READ_BIT(USARTx->CR3, USART_CR3_SCEN) == (USART_CR3_SCEN)); 1309 } 1310 1311 /** 1312 * @brief Set Smartcard prescaler value, used for dividing the USART clock 1313 * source to provide the SMARTCARD Clock (5 bits value) 1314 * @note Macro IS_SMARTCARD_INSTANCE(USARTx) can be used to check whether or not 1315 * Smartcard feature is supported by the USARTx instance. 1316 * @rmtoll GTPR PSC LL_USART_SetSmartcardPrescaler 1317 * @param USARTx USART Instance 1318 * @param PrescalerValue Value between Min_Data=0 and Max_Data=31 1319 * @retval None 1320 */ 1321 __STATIC_INLINE void LL_USART_SetSmartcardPrescaler(USART_TypeDef *USARTx, uint32_t PrescalerValue) 1322 { 1323 MODIFY_REG(USARTx->GTPR, USART_GTPR_PSC, PrescalerValue); 1324 } 1325 1326 /** 1327 * @brief Return Smartcard prescaler value, used for dividing the USART clock 1328 * source to provide the SMARTCARD Clock (5 bits value) 1329 * @note Macro IS_SMARTCARD_INSTANCE(USARTx) can be used to check whether or not 1330 * Smartcard feature is supported by the USARTx instance. 1331 * @rmtoll GTPR PSC LL_USART_GetSmartcardPrescaler 1332 * @param USARTx USART Instance 1333 * @retval Smartcard prescaler value (Value between Min_Data=0 and Max_Data=31) 1334 */ 1335 __STATIC_INLINE uint32_t LL_USART_GetSmartcardPrescaler(const USART_TypeDef *USARTx) 1336 { 1337 return (uint32_t)(READ_BIT(USARTx->GTPR, USART_GTPR_PSC)); 1338 } 1339 1340 /** 1341 * @brief Set Smartcard Guard time value, expressed in nb of baud clocks periods 1342 * (GT[7:0] bits : Guard time value) 1343 * @note Macro IS_SMARTCARD_INSTANCE(USARTx) can be used to check whether or not 1344 * Smartcard feature is supported by the USARTx instance. 1345 * @rmtoll GTPR GT LL_USART_SetSmartcardGuardTime 1346 * @param USARTx USART Instance 1347 * @param GuardTime Value between Min_Data=0x00 and Max_Data=0xFF 1348 * @retval None 1349 */ 1350 __STATIC_INLINE void LL_USART_SetSmartcardGuardTime(USART_TypeDef *USARTx, uint32_t GuardTime) 1351 { 1352 MODIFY_REG(USARTx->GTPR, USART_GTPR_GT, GuardTime << USART_POSITION_GTPR_GT); 1353 } 1354 1355 /** 1356 * @brief Return Smartcard Guard time value, expressed in nb of baud clocks periods 1357 * (GT[7:0] bits : Guard time value) 1358 * @note Macro IS_SMARTCARD_INSTANCE(USARTx) can be used to check whether or not 1359 * Smartcard feature is supported by the USARTx instance. 1360 * @rmtoll GTPR GT LL_USART_GetSmartcardGuardTime 1361 * @param USARTx USART Instance 1362 * @retval Smartcard Guard time value (Value between Min_Data=0x00 and Max_Data=0xFF) 1363 */ 1364 __STATIC_INLINE uint32_t LL_USART_GetSmartcardGuardTime(const USART_TypeDef *USARTx) 1365 { 1366 return (uint32_t)(READ_BIT(USARTx->GTPR, USART_GTPR_GT) >> USART_POSITION_GTPR_GT); 1367 } 1368 1369 /** 1370 * @} 1371 */ 1372 1373 /** @defgroup USART_LL_EF_Configuration_HalfDuplex Configuration functions related to Half Duplex feature 1374 * @{ 1375 */ 1376 1377 /** 1378 * @brief Enable Single Wire Half-Duplex mode 1379 * @note Macro IS_UART_HALFDUPLEX_INSTANCE(USARTx) can be used to check whether or not 1380 * Half-Duplex mode is supported by the USARTx instance. 1381 * @rmtoll CR3 HDSEL LL_USART_EnableHalfDuplex 1382 * @param USARTx USART Instance 1383 * @retval None 1384 */ 1385 __STATIC_INLINE void LL_USART_EnableHalfDuplex(USART_TypeDef *USARTx) 1386 { 1387 SET_BIT(USARTx->CR3, USART_CR3_HDSEL); 1388 } 1389 1390 /** 1391 * @brief Disable Single Wire Half-Duplex mode 1392 * @note Macro IS_UART_HALFDUPLEX_INSTANCE(USARTx) can be used to check whether or not 1393 * Half-Duplex mode is supported by the USARTx instance. 1394 * @rmtoll CR3 HDSEL LL_USART_DisableHalfDuplex 1395 * @param USARTx USART Instance 1396 * @retval None 1397 */ 1398 __STATIC_INLINE void LL_USART_DisableHalfDuplex(USART_TypeDef *USARTx) 1399 { 1400 CLEAR_BIT(USARTx->CR3, USART_CR3_HDSEL); 1401 } 1402 1403 /** 1404 * @brief Indicate if Single Wire Half-Duplex mode is enabled 1405 * @note Macro IS_UART_HALFDUPLEX_INSTANCE(USARTx) can be used to check whether or not 1406 * Half-Duplex mode is supported by the USARTx instance. 1407 * @rmtoll CR3 HDSEL LL_USART_IsEnabledHalfDuplex 1408 * @param USARTx USART Instance 1409 * @retval State of bit (1 or 0). 1410 */ 1411 __STATIC_INLINE uint32_t LL_USART_IsEnabledHalfDuplex(const USART_TypeDef *USARTx) 1412 { 1413 return (READ_BIT(USARTx->CR3, USART_CR3_HDSEL) == (USART_CR3_HDSEL)); 1414 } 1415 1416 /** 1417 * @} 1418 */ 1419 1420 /** @defgroup USART_LL_EF_Configuration_LIN Configuration functions related to LIN feature 1421 * @{ 1422 */ 1423 1424 /** 1425 * @brief Set LIN Break Detection Length 1426 * @note Macro IS_UART_LIN_INSTANCE(USARTx) can be used to check whether or not 1427 * LIN feature is supported by the USARTx instance. 1428 * @rmtoll CR2 LBDL LL_USART_SetLINBrkDetectionLen 1429 * @param USARTx USART Instance 1430 * @param LINBDLength This parameter can be one of the following values: 1431 * @arg @ref LL_USART_LINBREAK_DETECT_10B 1432 * @arg @ref LL_USART_LINBREAK_DETECT_11B 1433 * @retval None 1434 */ 1435 __STATIC_INLINE void LL_USART_SetLINBrkDetectionLen(USART_TypeDef *USARTx, uint32_t LINBDLength) 1436 { 1437 MODIFY_REG(USARTx->CR2, USART_CR2_LBDL, LINBDLength); 1438 } 1439 1440 /** 1441 * @brief Return LIN Break Detection Length 1442 * @note Macro IS_UART_LIN_INSTANCE(USARTx) can be used to check whether or not 1443 * LIN feature is supported by the USARTx instance. 1444 * @rmtoll CR2 LBDL LL_USART_GetLINBrkDetectionLen 1445 * @param USARTx USART Instance 1446 * @retval Returned value can be one of the following values: 1447 * @arg @ref LL_USART_LINBREAK_DETECT_10B 1448 * @arg @ref LL_USART_LINBREAK_DETECT_11B 1449 */ 1450 __STATIC_INLINE uint32_t LL_USART_GetLINBrkDetectionLen(const USART_TypeDef *USARTx) 1451 { 1452 return (uint32_t)(READ_BIT(USARTx->CR2, USART_CR2_LBDL)); 1453 } 1454 1455 /** 1456 * @brief Enable LIN mode 1457 * @note Macro IS_UART_LIN_INSTANCE(USARTx) can be used to check whether or not 1458 * LIN feature is supported by the USARTx instance. 1459 * @rmtoll CR2 LINEN LL_USART_EnableLIN 1460 * @param USARTx USART Instance 1461 * @retval None 1462 */ 1463 __STATIC_INLINE void LL_USART_EnableLIN(USART_TypeDef *USARTx) 1464 { 1465 SET_BIT(USARTx->CR2, USART_CR2_LINEN); 1466 } 1467 1468 /** 1469 * @brief Disable LIN mode 1470 * @note Macro IS_UART_LIN_INSTANCE(USARTx) can be used to check whether or not 1471 * LIN feature is supported by the USARTx instance. 1472 * @rmtoll CR2 LINEN LL_USART_DisableLIN 1473 * @param USARTx USART Instance 1474 * @retval None 1475 */ 1476 __STATIC_INLINE void LL_USART_DisableLIN(USART_TypeDef *USARTx) 1477 { 1478 CLEAR_BIT(USARTx->CR2, USART_CR2_LINEN); 1479 } 1480 1481 /** 1482 * @brief Indicate if LIN mode is enabled 1483 * @note Macro IS_UART_LIN_INSTANCE(USARTx) can be used to check whether or not 1484 * LIN feature is supported by the USARTx instance. 1485 * @rmtoll CR2 LINEN LL_USART_IsEnabledLIN 1486 * @param USARTx USART Instance 1487 * @retval State of bit (1 or 0). 1488 */ 1489 __STATIC_INLINE uint32_t LL_USART_IsEnabledLIN(const USART_TypeDef *USARTx) 1490 { 1491 return (READ_BIT(USARTx->CR2, USART_CR2_LINEN) == (USART_CR2_LINEN)); 1492 } 1493 1494 /** 1495 * @} 1496 */ 1497 1498 /** @defgroup USART_LL_EF_AdvancedConfiguration Advanced Configurations services 1499 * @{ 1500 */ 1501 1502 /** 1503 * @brief Perform basic configuration of USART for enabling use in Asynchronous Mode (UART) 1504 * @note In UART mode, the following bits must be kept cleared: 1505 * - LINEN bit in the USART_CR2 register, 1506 * - CLKEN bit in the USART_CR2 register, 1507 * - SCEN bit in the USART_CR3 register, 1508 * - IREN bit in the USART_CR3 register, 1509 * - HDSEL bit in the USART_CR3 register. 1510 * @note Call of this function is equivalent to following function call sequence : 1511 * - Clear LINEN in CR2 using @ref LL_USART_DisableLIN() function 1512 * - Clear CLKEN in CR2 using @ref LL_USART_DisableSCLKOutput() function 1513 * - Clear SCEN in CR3 using @ref LL_USART_DisableSmartcard() function 1514 * - Clear IREN in CR3 using @ref LL_USART_DisableIrda() function 1515 * - Clear HDSEL in CR3 using @ref LL_USART_DisableHalfDuplex() function 1516 * @note Other remaining configurations items related to Asynchronous Mode 1517 * (as Baud Rate, Word length, Parity, ...) should be set using 1518 * dedicated functions 1519 * @rmtoll CR2 LINEN LL_USART_ConfigAsyncMode\n 1520 * CR2 CLKEN LL_USART_ConfigAsyncMode\n 1521 * CR3 SCEN LL_USART_ConfigAsyncMode\n 1522 * CR3 IREN LL_USART_ConfigAsyncMode\n 1523 * CR3 HDSEL LL_USART_ConfigAsyncMode 1524 * @param USARTx USART Instance 1525 * @retval None 1526 */ 1527 __STATIC_INLINE void LL_USART_ConfigAsyncMode(USART_TypeDef *USARTx) 1528 { 1529 /* In Asynchronous mode, the following bits must be kept cleared: 1530 - LINEN, CLKEN bits in the USART_CR2 register, 1531 - SCEN, IREN and HDSEL bits in the USART_CR3 register.*/ 1532 CLEAR_BIT(USARTx->CR2, (USART_CR2_LINEN | USART_CR2_CLKEN)); 1533 CLEAR_BIT(USARTx->CR3, (USART_CR3_SCEN | USART_CR3_IREN | USART_CR3_HDSEL)); 1534 } 1535 1536 /** 1537 * @brief Perform basic configuration of USART for enabling use in Synchronous Mode 1538 * @note In Synchronous mode, the following bits must be kept cleared: 1539 * - LINEN bit in the USART_CR2 register, 1540 * - SCEN bit in the USART_CR3 register, 1541 * - IREN bit in the USART_CR3 register, 1542 * - HDSEL bit in the USART_CR3 register. 1543 * This function also sets the USART in Synchronous mode. 1544 * @note Macro IS_USART_INSTANCE(USARTx) can be used to check whether or not 1545 * Synchronous mode is supported by the USARTx instance. 1546 * @note Call of this function is equivalent to following function call sequence : 1547 * - Clear LINEN in CR2 using @ref LL_USART_DisableLIN() function 1548 * - Clear IREN in CR3 using @ref LL_USART_DisableIrda() function 1549 * - Clear SCEN in CR3 using @ref LL_USART_DisableSmartcard() function 1550 * - Clear HDSEL in CR3 using @ref LL_USART_DisableHalfDuplex() function 1551 * - Set CLKEN in CR2 using @ref LL_USART_EnableSCLKOutput() function 1552 * @note Other remaining configurations items related to Synchronous Mode 1553 * (as Baud Rate, Word length, Parity, Clock Polarity, ...) should be set using 1554 * dedicated functions 1555 * @rmtoll CR2 LINEN LL_USART_ConfigSyncMode\n 1556 * CR2 CLKEN LL_USART_ConfigSyncMode\n 1557 * CR3 SCEN LL_USART_ConfigSyncMode\n 1558 * CR3 IREN LL_USART_ConfigSyncMode\n 1559 * CR3 HDSEL LL_USART_ConfigSyncMode 1560 * @param USARTx USART Instance 1561 * @retval None 1562 */ 1563 __STATIC_INLINE void LL_USART_ConfigSyncMode(USART_TypeDef *USARTx) 1564 { 1565 /* In Synchronous mode, the following bits must be kept cleared: 1566 - LINEN bit in the USART_CR2 register, 1567 - SCEN, IREN and HDSEL bits in the USART_CR3 register.*/ 1568 CLEAR_BIT(USARTx->CR2, (USART_CR2_LINEN)); 1569 CLEAR_BIT(USARTx->CR3, (USART_CR3_SCEN | USART_CR3_IREN | USART_CR3_HDSEL)); 1570 /* set the UART/USART in Synchronous mode */ 1571 SET_BIT(USARTx->CR2, USART_CR2_CLKEN); 1572 } 1573 1574 /** 1575 * @brief Perform basic configuration of USART for enabling use in LIN Mode 1576 * @note In LIN mode, the following bits must be kept cleared: 1577 * - STOP and CLKEN bits in the USART_CR2 register, 1578 * - SCEN bit in the USART_CR3 register, 1579 * - IREN bit in the USART_CR3 register, 1580 * - HDSEL bit in the USART_CR3 register. 1581 * This function also set the UART/USART in LIN mode. 1582 * @note Macro IS_UART_LIN_INSTANCE(USARTx) can be used to check whether or not 1583 * LIN feature is supported by the USARTx instance. 1584 * @note Call of this function is equivalent to following function call sequence : 1585 * - Clear CLKEN in CR2 using @ref LL_USART_DisableSCLKOutput() function 1586 * - Clear STOP in CR2 using @ref LL_USART_SetStopBitsLength() function 1587 * - Clear SCEN in CR3 using @ref LL_USART_DisableSmartcard() function 1588 * - Clear IREN in CR3 using @ref LL_USART_DisableIrda() function 1589 * - Clear HDSEL in CR3 using @ref LL_USART_DisableHalfDuplex() function 1590 * - Set LINEN in CR2 using @ref LL_USART_EnableLIN() function 1591 * @note Other remaining configurations items related to LIN Mode 1592 * (as Baud Rate, Word length, LIN Break Detection Length, ...) should be set using 1593 * dedicated functions 1594 * @rmtoll CR2 CLKEN LL_USART_ConfigLINMode\n 1595 * CR2 STOP LL_USART_ConfigLINMode\n 1596 * CR2 LINEN LL_USART_ConfigLINMode\n 1597 * CR3 IREN LL_USART_ConfigLINMode\n 1598 * CR3 SCEN LL_USART_ConfigLINMode\n 1599 * CR3 HDSEL LL_USART_ConfigLINMode 1600 * @param USARTx USART Instance 1601 * @retval None 1602 */ 1603 __STATIC_INLINE void LL_USART_ConfigLINMode(USART_TypeDef *USARTx) 1604 { 1605 /* In LIN mode, the following bits must be kept cleared: 1606 - STOP and CLKEN bits in the USART_CR2 register, 1607 - IREN, SCEN and HDSEL bits in the USART_CR3 register.*/ 1608 CLEAR_BIT(USARTx->CR2, (USART_CR2_CLKEN | USART_CR2_STOP)); 1609 CLEAR_BIT(USARTx->CR3, (USART_CR3_IREN | USART_CR3_SCEN | USART_CR3_HDSEL)); 1610 /* Set the UART/USART in LIN mode */ 1611 SET_BIT(USARTx->CR2, USART_CR2_LINEN); 1612 } 1613 1614 /** 1615 * @brief Perform basic configuration of USART for enabling use in Half Duplex Mode 1616 * @note In Half Duplex mode, the following bits must be kept cleared: 1617 * - LINEN bit in the USART_CR2 register, 1618 * - CLKEN bit in the USART_CR2 register, 1619 * - SCEN bit in the USART_CR3 register, 1620 * - IREN bit in the USART_CR3 register, 1621 * This function also sets the UART/USART in Half Duplex mode. 1622 * @note Macro IS_UART_HALFDUPLEX_INSTANCE(USARTx) can be used to check whether or not 1623 * Half-Duplex mode is supported by the USARTx instance. 1624 * @note Call of this function is equivalent to following function call sequence : 1625 * - Clear LINEN in CR2 using @ref LL_USART_DisableLIN() function 1626 * - Clear CLKEN in CR2 using @ref LL_USART_DisableSCLKOutput() function 1627 * - Clear SCEN in CR3 using @ref LL_USART_DisableSmartcard() function 1628 * - Clear IREN in CR3 using @ref LL_USART_DisableIrda() function 1629 * - Set HDSEL in CR3 using @ref LL_USART_EnableHalfDuplex() function 1630 * @note Other remaining configurations items related to Half Duplex Mode 1631 * (as Baud Rate, Word length, Parity, ...) should be set using 1632 * dedicated functions 1633 * @rmtoll CR2 LINEN LL_USART_ConfigHalfDuplexMode\n 1634 * CR2 CLKEN LL_USART_ConfigHalfDuplexMode\n 1635 * CR3 HDSEL LL_USART_ConfigHalfDuplexMode\n 1636 * CR3 SCEN LL_USART_ConfigHalfDuplexMode\n 1637 * CR3 IREN LL_USART_ConfigHalfDuplexMode 1638 * @param USARTx USART Instance 1639 * @retval None 1640 */ 1641 __STATIC_INLINE void LL_USART_ConfigHalfDuplexMode(USART_TypeDef *USARTx) 1642 { 1643 /* In Half Duplex mode, the following bits must be kept cleared: 1644 - LINEN and CLKEN bits in the USART_CR2 register, 1645 - SCEN and IREN bits in the USART_CR3 register.*/ 1646 CLEAR_BIT(USARTx->CR2, (USART_CR2_LINEN | USART_CR2_CLKEN)); 1647 CLEAR_BIT(USARTx->CR3, (USART_CR3_SCEN | USART_CR3_IREN)); 1648 /* set the UART/USART in Half Duplex mode */ 1649 SET_BIT(USARTx->CR3, USART_CR3_HDSEL); 1650 } 1651 1652 /** 1653 * @brief Perform basic configuration of USART for enabling use in Smartcard Mode 1654 * @note In Smartcard mode, the following bits must be kept cleared: 1655 * - LINEN bit in the USART_CR2 register, 1656 * - IREN bit in the USART_CR3 register, 1657 * - HDSEL bit in the USART_CR3 register. 1658 * This function also configures Stop bits to 1.5 bits and 1659 * sets the USART in Smartcard mode (SCEN bit). 1660 * Clock Output is also enabled (CLKEN). 1661 * @note Macro IS_SMARTCARD_INSTANCE(USARTx) can be used to check whether or not 1662 * Smartcard feature is supported by the USARTx instance. 1663 * @note Call of this function is equivalent to following function call sequence : 1664 * - Clear LINEN in CR2 using @ref LL_USART_DisableLIN() function 1665 * - Clear IREN in CR3 using @ref LL_USART_DisableIrda() function 1666 * - Clear HDSEL in CR3 using @ref LL_USART_DisableHalfDuplex() function 1667 * - Configure STOP in CR2 using @ref LL_USART_SetStopBitsLength() function 1668 * - Set CLKEN in CR2 using @ref LL_USART_EnableSCLKOutput() function 1669 * - Set SCEN in CR3 using @ref LL_USART_EnableSmartcard() function 1670 * @note Other remaining configurations items related to Smartcard Mode 1671 * (as Baud Rate, Word length, Parity, ...) should be set using 1672 * dedicated functions 1673 * @rmtoll CR2 LINEN LL_USART_ConfigSmartcardMode\n 1674 * CR2 STOP LL_USART_ConfigSmartcardMode\n 1675 * CR2 CLKEN LL_USART_ConfigSmartcardMode\n 1676 * CR3 HDSEL LL_USART_ConfigSmartcardMode\n 1677 * CR3 SCEN LL_USART_ConfigSmartcardMode 1678 * @param USARTx USART Instance 1679 * @retval None 1680 */ 1681 __STATIC_INLINE void LL_USART_ConfigSmartcardMode(USART_TypeDef *USARTx) 1682 { 1683 /* In Smartcard mode, the following bits must be kept cleared: 1684 - LINEN bit in the USART_CR2 register, 1685 - IREN and HDSEL bits in the USART_CR3 register.*/ 1686 CLEAR_BIT(USARTx->CR2, (USART_CR2_LINEN)); 1687 CLEAR_BIT(USARTx->CR3, (USART_CR3_IREN | USART_CR3_HDSEL)); 1688 /* Configure Stop bits to 1.5 bits */ 1689 /* Synchronous mode is activated by default */ 1690 SET_BIT(USARTx->CR2, (USART_CR2_STOP_0 | USART_CR2_STOP_1 | USART_CR2_CLKEN)); 1691 /* set the UART/USART in Smartcard mode */ 1692 SET_BIT(USARTx->CR3, USART_CR3_SCEN); 1693 } 1694 1695 /** 1696 * @brief Perform basic configuration of USART for enabling use in Irda Mode 1697 * @note In IRDA mode, the following bits must be kept cleared: 1698 * - LINEN bit in the USART_CR2 register, 1699 * - STOP and CLKEN bits in the USART_CR2 register, 1700 * - SCEN bit in the USART_CR3 register, 1701 * - HDSEL bit in the USART_CR3 register. 1702 * This function also sets the UART/USART in IRDA mode (IREN bit). 1703 * @note Macro IS_IRDA_INSTANCE(USARTx) can be used to check whether or not 1704 * IrDA feature is supported by the USARTx instance. 1705 * @note Call of this function is equivalent to following function call sequence : 1706 * - Clear LINEN in CR2 using @ref LL_USART_DisableLIN() function 1707 * - Clear CLKEN in CR2 using @ref LL_USART_DisableSCLKOutput() function 1708 * - Clear SCEN in CR3 using @ref LL_USART_DisableSmartcard() function 1709 * - Clear HDSEL in CR3 using @ref LL_USART_DisableHalfDuplex() function 1710 * - Configure STOP in CR2 using @ref LL_USART_SetStopBitsLength() function 1711 * - Set IREN in CR3 using @ref LL_USART_EnableIrda() function 1712 * @note Other remaining configurations items related to Irda Mode 1713 * (as Baud Rate, Word length, Power mode, ...) should be set using 1714 * dedicated functions 1715 * @rmtoll CR2 LINEN LL_USART_ConfigIrdaMode\n 1716 * CR2 CLKEN LL_USART_ConfigIrdaMode\n 1717 * CR2 STOP LL_USART_ConfigIrdaMode\n 1718 * CR3 SCEN LL_USART_ConfigIrdaMode\n 1719 * CR3 HDSEL LL_USART_ConfigIrdaMode\n 1720 * CR3 IREN LL_USART_ConfigIrdaMode 1721 * @param USARTx USART Instance 1722 * @retval None 1723 */ 1724 __STATIC_INLINE void LL_USART_ConfigIrdaMode(USART_TypeDef *USARTx) 1725 { 1726 /* In IRDA mode, the following bits must be kept cleared: 1727 - LINEN, STOP and CLKEN bits in the USART_CR2 register, 1728 - SCEN and HDSEL bits in the USART_CR3 register.*/ 1729 CLEAR_BIT(USARTx->CR2, (USART_CR2_LINEN | USART_CR2_CLKEN | USART_CR2_STOP)); 1730 CLEAR_BIT(USARTx->CR3, (USART_CR3_SCEN | USART_CR3_HDSEL)); 1731 /* set the UART/USART in IRDA mode */ 1732 SET_BIT(USARTx->CR3, USART_CR3_IREN); 1733 } 1734 1735 /** 1736 * @brief Perform basic configuration of USART for enabling use in Multi processor Mode 1737 * (several USARTs connected in a network, one of the USARTs can be the master, 1738 * its TX output connected to the RX inputs of the other slaves USARTs). 1739 * @note In MultiProcessor mode, the following bits must be kept cleared: 1740 * - LINEN bit in the USART_CR2 register, 1741 * - CLKEN bit in the USART_CR2 register, 1742 * - SCEN bit in the USART_CR3 register, 1743 * - IREN bit in the USART_CR3 register, 1744 * - HDSEL bit in the USART_CR3 register. 1745 * @note Call of this function is equivalent to following function call sequence : 1746 * - Clear LINEN in CR2 using @ref LL_USART_DisableLIN() function 1747 * - Clear CLKEN in CR2 using @ref LL_USART_DisableSCLKOutput() function 1748 * - Clear SCEN in CR3 using @ref LL_USART_DisableSmartcard() function 1749 * - Clear IREN in CR3 using @ref LL_USART_DisableIrda() function 1750 * - Clear HDSEL in CR3 using @ref LL_USART_DisableHalfDuplex() function 1751 * @note Other remaining configurations items related to Multi processor Mode 1752 * (as Baud Rate, Wake Up Method, Node address, ...) should be set using 1753 * dedicated functions 1754 * @rmtoll CR2 LINEN LL_USART_ConfigMultiProcessMode\n 1755 * CR2 CLKEN LL_USART_ConfigMultiProcessMode\n 1756 * CR3 SCEN LL_USART_ConfigMultiProcessMode\n 1757 * CR3 HDSEL LL_USART_ConfigMultiProcessMode\n 1758 * CR3 IREN LL_USART_ConfigMultiProcessMode 1759 * @param USARTx USART Instance 1760 * @retval None 1761 */ 1762 __STATIC_INLINE void LL_USART_ConfigMultiProcessMode(USART_TypeDef *USARTx) 1763 { 1764 /* In Multi Processor mode, the following bits must be kept cleared: 1765 - LINEN and CLKEN bits in the USART_CR2 register, 1766 - IREN, SCEN and HDSEL bits in the USART_CR3 register.*/ 1767 CLEAR_BIT(USARTx->CR2, (USART_CR2_LINEN | USART_CR2_CLKEN)); 1768 CLEAR_BIT(USARTx->CR3, (USART_CR3_SCEN | USART_CR3_HDSEL | USART_CR3_IREN)); 1769 } 1770 1771 /** 1772 * @} 1773 */ 1774 1775 /** @defgroup USART_LL_EF_FLAG_Management FLAG_Management 1776 * @{ 1777 */ 1778 1779 /** 1780 * @brief Check if the USART Parity Error Flag is set or not 1781 * @rmtoll SR PE LL_USART_IsActiveFlag_PE 1782 * @param USARTx USART Instance 1783 * @retval State of bit (1 or 0). 1784 */ 1785 __STATIC_INLINE uint32_t LL_USART_IsActiveFlag_PE(const USART_TypeDef *USARTx) 1786 { 1787 return (READ_BIT(USARTx->SR, USART_SR_PE) == (USART_SR_PE)); 1788 } 1789 1790 /** 1791 * @brief Check if the USART Framing Error Flag is set or not 1792 * @rmtoll SR FE LL_USART_IsActiveFlag_FE 1793 * @param USARTx USART Instance 1794 * @retval State of bit (1 or 0). 1795 */ 1796 __STATIC_INLINE uint32_t LL_USART_IsActiveFlag_FE(const USART_TypeDef *USARTx) 1797 { 1798 return (READ_BIT(USARTx->SR, USART_SR_FE) == (USART_SR_FE)); 1799 } 1800 1801 /** 1802 * @brief Check if the USART Noise error detected Flag is set or not 1803 * @rmtoll SR NF LL_USART_IsActiveFlag_NE 1804 * @param USARTx USART Instance 1805 * @retval State of bit (1 or 0). 1806 */ 1807 __STATIC_INLINE uint32_t LL_USART_IsActiveFlag_NE(const USART_TypeDef *USARTx) 1808 { 1809 return (READ_BIT(USARTx->SR, USART_SR_NE) == (USART_SR_NE)); 1810 } 1811 1812 /** 1813 * @brief Check if the USART OverRun Error Flag is set or not 1814 * @rmtoll SR ORE LL_USART_IsActiveFlag_ORE 1815 * @param USARTx USART Instance 1816 * @retval State of bit (1 or 0). 1817 */ 1818 __STATIC_INLINE uint32_t LL_USART_IsActiveFlag_ORE(const USART_TypeDef *USARTx) 1819 { 1820 return (READ_BIT(USARTx->SR, USART_SR_ORE) == (USART_SR_ORE)); 1821 } 1822 1823 /** 1824 * @brief Check if the USART IDLE line detected Flag is set or not 1825 * @rmtoll SR IDLE LL_USART_IsActiveFlag_IDLE 1826 * @param USARTx USART Instance 1827 * @retval State of bit (1 or 0). 1828 */ 1829 __STATIC_INLINE uint32_t LL_USART_IsActiveFlag_IDLE(const USART_TypeDef *USARTx) 1830 { 1831 return (READ_BIT(USARTx->SR, USART_SR_IDLE) == (USART_SR_IDLE)); 1832 } 1833 1834 /** 1835 * @brief Check if the USART Read Data Register Not Empty Flag is set or not 1836 * @rmtoll SR RXNE LL_USART_IsActiveFlag_RXNE 1837 * @param USARTx USART Instance 1838 * @retval State of bit (1 or 0). 1839 */ 1840 __STATIC_INLINE uint32_t LL_USART_IsActiveFlag_RXNE(const USART_TypeDef *USARTx) 1841 { 1842 return (READ_BIT(USARTx->SR, USART_SR_RXNE) == (USART_SR_RXNE)); 1843 } 1844 1845 /** 1846 * @brief Check if the USART Transmission Complete Flag is set or not 1847 * @rmtoll SR TC LL_USART_IsActiveFlag_TC 1848 * @param USARTx USART Instance 1849 * @retval State of bit (1 or 0). 1850 */ 1851 __STATIC_INLINE uint32_t LL_USART_IsActiveFlag_TC(const USART_TypeDef *USARTx) 1852 { 1853 return (READ_BIT(USARTx->SR, USART_SR_TC) == (USART_SR_TC)); 1854 } 1855 1856 /** 1857 * @brief Check if the USART Transmit Data Register Empty Flag is set or not 1858 * @rmtoll SR TXE LL_USART_IsActiveFlag_TXE 1859 * @param USARTx USART Instance 1860 * @retval State of bit (1 or 0). 1861 */ 1862 __STATIC_INLINE uint32_t LL_USART_IsActiveFlag_TXE(const USART_TypeDef *USARTx) 1863 { 1864 return (READ_BIT(USARTx->SR, USART_SR_TXE) == (USART_SR_TXE)); 1865 } 1866 1867 /** 1868 * @brief Check if the USART LIN Break Detection Flag is set or not 1869 * @note Macro IS_UART_LIN_INSTANCE(USARTx) can be used to check whether or not 1870 * LIN feature is supported by the USARTx instance. 1871 * @rmtoll SR LBD LL_USART_IsActiveFlag_LBD 1872 * @param USARTx USART Instance 1873 * @retval State of bit (1 or 0). 1874 */ 1875 __STATIC_INLINE uint32_t LL_USART_IsActiveFlag_LBD(const USART_TypeDef *USARTx) 1876 { 1877 return (READ_BIT(USARTx->SR, USART_SR_LBD) == (USART_SR_LBD)); 1878 } 1879 1880 /** 1881 * @brief Check if the USART CTS Flag is set or not 1882 * @note Macro IS_UART_HWFLOW_INSTANCE(USARTx) can be used to check whether or not 1883 * Hardware Flow control feature is supported by the USARTx instance. 1884 * @rmtoll SR CTS LL_USART_IsActiveFlag_nCTS 1885 * @param USARTx USART Instance 1886 * @retval State of bit (1 or 0). 1887 */ 1888 __STATIC_INLINE uint32_t LL_USART_IsActiveFlag_nCTS(const USART_TypeDef *USARTx) 1889 { 1890 return (READ_BIT(USARTx->SR, USART_SR_CTS) == (USART_SR_CTS)); 1891 } 1892 1893 /** 1894 * @brief Check if the USART Send Break Flag is set or not 1895 * @rmtoll CR1 SBK LL_USART_IsActiveFlag_SBK 1896 * @param USARTx USART Instance 1897 * @retval State of bit (1 or 0). 1898 */ 1899 __STATIC_INLINE uint32_t LL_USART_IsActiveFlag_SBK(const USART_TypeDef *USARTx) 1900 { 1901 return (READ_BIT(USARTx->CR1, USART_CR1_SBK) == (USART_CR1_SBK)); 1902 } 1903 1904 /** 1905 * @brief Check if the USART Receive Wake Up from mute mode Flag is set or not 1906 * @rmtoll CR1 RWU LL_USART_IsActiveFlag_RWU 1907 * @param USARTx USART Instance 1908 * @retval State of bit (1 or 0). 1909 */ 1910 __STATIC_INLINE uint32_t LL_USART_IsActiveFlag_RWU(const USART_TypeDef *USARTx) 1911 { 1912 return (READ_BIT(USARTx->CR1, USART_CR1_RWU) == (USART_CR1_RWU)); 1913 } 1914 1915 /** 1916 * @brief Clear Parity Error Flag 1917 * @note Clearing this flag is done by a read access to the USARTx_SR 1918 * register followed by a read access to the USARTx_DR register. 1919 * @note Please also consider that when clearing this flag, other flags as 1920 * NE, FE, ORE, IDLE would also be cleared. 1921 * @rmtoll SR PE LL_USART_ClearFlag_PE 1922 * @param USARTx USART Instance 1923 * @retval None 1924 */ 1925 __STATIC_INLINE void LL_USART_ClearFlag_PE(USART_TypeDef *USARTx) 1926 { 1927 __IO uint32_t tmpreg; 1928 tmpreg = USARTx->SR; 1929 (void) tmpreg; 1930 tmpreg = USARTx->DR; 1931 (void) tmpreg; 1932 } 1933 1934 /** 1935 * @brief Clear Framing Error Flag 1936 * @note Clearing this flag is done by a read access to the USARTx_SR 1937 * register followed by a read access to the USARTx_DR register. 1938 * @note Please also consider that when clearing this flag, other flags as 1939 * PE, NE, ORE, IDLE would also be cleared. 1940 * @rmtoll SR FE LL_USART_ClearFlag_FE 1941 * @param USARTx USART Instance 1942 * @retval None 1943 */ 1944 __STATIC_INLINE void LL_USART_ClearFlag_FE(USART_TypeDef *USARTx) 1945 { 1946 __IO uint32_t tmpreg; 1947 tmpreg = USARTx->SR; 1948 (void) tmpreg; 1949 tmpreg = USARTx->DR; 1950 (void) tmpreg; 1951 } 1952 1953 /** 1954 * @brief Clear Noise detected Flag 1955 * @note Clearing this flag is done by a read access to the USARTx_SR 1956 * register followed by a read access to the USARTx_DR register. 1957 * @note Please also consider that when clearing this flag, other flags as 1958 * PE, FE, ORE, IDLE would also be cleared. 1959 * @rmtoll SR NF LL_USART_ClearFlag_NE 1960 * @param USARTx USART Instance 1961 * @retval None 1962 */ 1963 __STATIC_INLINE void LL_USART_ClearFlag_NE(USART_TypeDef *USARTx) 1964 { 1965 __IO uint32_t tmpreg; 1966 tmpreg = USARTx->SR; 1967 (void) tmpreg; 1968 tmpreg = USARTx->DR; 1969 (void) tmpreg; 1970 } 1971 1972 /** 1973 * @brief Clear OverRun Error Flag 1974 * @note Clearing this flag is done by a read access to the USARTx_SR 1975 * register followed by a read access to the USARTx_DR register. 1976 * @note Please also consider that when clearing this flag, other flags as 1977 * PE, NE, FE, IDLE would also be cleared. 1978 * @rmtoll SR ORE LL_USART_ClearFlag_ORE 1979 * @param USARTx USART Instance 1980 * @retval None 1981 */ 1982 __STATIC_INLINE void LL_USART_ClearFlag_ORE(USART_TypeDef *USARTx) 1983 { 1984 __IO uint32_t tmpreg; 1985 tmpreg = USARTx->SR; 1986 (void) tmpreg; 1987 tmpreg = USARTx->DR; 1988 (void) tmpreg; 1989 } 1990 1991 /** 1992 * @brief Clear IDLE line detected Flag 1993 * @note Clearing this flag is done by a read access to the USARTx_SR 1994 * register followed by a read access to the USARTx_DR register. 1995 * @note Please also consider that when clearing this flag, other flags as 1996 * PE, NE, FE, ORE would also be cleared. 1997 * @rmtoll SR IDLE LL_USART_ClearFlag_IDLE 1998 * @param USARTx USART Instance 1999 * @retval None 2000 */ 2001 __STATIC_INLINE void LL_USART_ClearFlag_IDLE(USART_TypeDef *USARTx) 2002 { 2003 __IO uint32_t tmpreg; 2004 tmpreg = USARTx->SR; 2005 (void) tmpreg; 2006 tmpreg = USARTx->DR; 2007 (void) tmpreg; 2008 } 2009 2010 /** 2011 * @brief Clear Transmission Complete Flag 2012 * @rmtoll SR TC LL_USART_ClearFlag_TC 2013 * @param USARTx USART Instance 2014 * @retval None 2015 */ 2016 __STATIC_INLINE void LL_USART_ClearFlag_TC(USART_TypeDef *USARTx) 2017 { 2018 WRITE_REG(USARTx->SR, ~(USART_SR_TC)); 2019 } 2020 2021 /** 2022 * @brief Clear RX Not Empty Flag 2023 * @rmtoll SR RXNE LL_USART_ClearFlag_RXNE 2024 * @param USARTx USART Instance 2025 * @retval None 2026 */ 2027 __STATIC_INLINE void LL_USART_ClearFlag_RXNE(USART_TypeDef *USARTx) 2028 { 2029 WRITE_REG(USARTx->SR, ~(USART_SR_RXNE)); 2030 } 2031 2032 /** 2033 * @brief Clear LIN Break Detection Flag 2034 * @note Macro IS_UART_LIN_INSTANCE(USARTx) can be used to check whether or not 2035 * LIN feature is supported by the USARTx instance. 2036 * @rmtoll SR LBD LL_USART_ClearFlag_LBD 2037 * @param USARTx USART Instance 2038 * @retval None 2039 */ 2040 __STATIC_INLINE void LL_USART_ClearFlag_LBD(USART_TypeDef *USARTx) 2041 { 2042 WRITE_REG(USARTx->SR, ~(USART_SR_LBD)); 2043 } 2044 2045 /** 2046 * @brief Clear CTS Interrupt Flag 2047 * @note Macro IS_UART_HWFLOW_INSTANCE(USARTx) can be used to check whether or not 2048 * Hardware Flow control feature is supported by the USARTx instance. 2049 * @rmtoll SR CTS LL_USART_ClearFlag_nCTS 2050 * @param USARTx USART Instance 2051 * @retval None 2052 */ 2053 __STATIC_INLINE void LL_USART_ClearFlag_nCTS(USART_TypeDef *USARTx) 2054 { 2055 WRITE_REG(USARTx->SR, ~(USART_SR_CTS)); 2056 } 2057 2058 /** 2059 * @} 2060 */ 2061 2062 /** @defgroup USART_LL_EF_IT_Management IT_Management 2063 * @{ 2064 */ 2065 2066 /** 2067 * @brief Enable IDLE Interrupt 2068 * @rmtoll CR1 IDLEIE LL_USART_EnableIT_IDLE 2069 * @param USARTx USART Instance 2070 * @retval None 2071 */ 2072 __STATIC_INLINE void LL_USART_EnableIT_IDLE(USART_TypeDef *USARTx) 2073 { 2074 ATOMIC_SET_BIT(USARTx->CR1, USART_CR1_IDLEIE); 2075 } 2076 2077 /** 2078 * @brief Enable RX Not Empty Interrupt 2079 * @rmtoll CR1 RXNEIE LL_USART_EnableIT_RXNE 2080 * @param USARTx USART Instance 2081 * @retval None 2082 */ 2083 __STATIC_INLINE void LL_USART_EnableIT_RXNE(USART_TypeDef *USARTx) 2084 { 2085 ATOMIC_SET_BIT(USARTx->CR1, USART_CR1_RXNEIE); 2086 } 2087 2088 /** 2089 * @brief Enable Transmission Complete Interrupt 2090 * @rmtoll CR1 TCIE LL_USART_EnableIT_TC 2091 * @param USARTx USART Instance 2092 * @retval None 2093 */ 2094 __STATIC_INLINE void LL_USART_EnableIT_TC(USART_TypeDef *USARTx) 2095 { 2096 ATOMIC_SET_BIT(USARTx->CR1, USART_CR1_TCIE); 2097 } 2098 2099 /** 2100 * @brief Enable TX Empty Interrupt 2101 * @rmtoll CR1 TXEIE LL_USART_EnableIT_TXE 2102 * @param USARTx USART Instance 2103 * @retval None 2104 */ 2105 __STATIC_INLINE void LL_USART_EnableIT_TXE(USART_TypeDef *USARTx) 2106 { 2107 ATOMIC_SET_BIT(USARTx->CR1, USART_CR1_TXEIE); 2108 } 2109 2110 /** 2111 * @brief Enable Parity Error Interrupt 2112 * @rmtoll CR1 PEIE LL_USART_EnableIT_PE 2113 * @param USARTx USART Instance 2114 * @retval None 2115 */ 2116 __STATIC_INLINE void LL_USART_EnableIT_PE(USART_TypeDef *USARTx) 2117 { 2118 ATOMIC_SET_BIT(USARTx->CR1, USART_CR1_PEIE); 2119 } 2120 2121 /** 2122 * @brief Enable LIN Break Detection Interrupt 2123 * @note Macro IS_UART_LIN_INSTANCE(USARTx) can be used to check whether or not 2124 * LIN feature is supported by the USARTx instance. 2125 * @rmtoll CR2 LBDIE LL_USART_EnableIT_LBD 2126 * @param USARTx USART Instance 2127 * @retval None 2128 */ 2129 __STATIC_INLINE void LL_USART_EnableIT_LBD(USART_TypeDef *USARTx) 2130 { 2131 SET_BIT(USARTx->CR2, USART_CR2_LBDIE); 2132 } 2133 2134 /** 2135 * @brief Enable Error Interrupt 2136 * @note When set, Error Interrupt Enable Bit is enabling interrupt generation in case of a framing 2137 * error, overrun error or noise flag (FE=1 or ORE=1 or NF=1 in the USARTx_SR register). 2138 * 0: Interrupt is inhibited 2139 * 1: An interrupt is generated when FE=1 or ORE=1 or NF=1 in the USARTx_SR register. 2140 * @rmtoll CR3 EIE LL_USART_EnableIT_ERROR 2141 * @param USARTx USART Instance 2142 * @retval None 2143 */ 2144 __STATIC_INLINE void LL_USART_EnableIT_ERROR(USART_TypeDef *USARTx) 2145 { 2146 ATOMIC_SET_BIT(USARTx->CR3, USART_CR3_EIE); 2147 } 2148 2149 /** 2150 * @brief Enable CTS Interrupt 2151 * @note Macro IS_UART_HWFLOW_INSTANCE(USARTx) can be used to check whether or not 2152 * Hardware Flow control feature is supported by the USARTx instance. 2153 * @rmtoll CR3 CTSIE LL_USART_EnableIT_CTS 2154 * @param USARTx USART Instance 2155 * @retval None 2156 */ 2157 __STATIC_INLINE void LL_USART_EnableIT_CTS(USART_TypeDef *USARTx) 2158 { 2159 ATOMIC_SET_BIT(USARTx->CR3, USART_CR3_CTSIE); 2160 } 2161 2162 /** 2163 * @brief Disable IDLE Interrupt 2164 * @rmtoll CR1 IDLEIE LL_USART_DisableIT_IDLE 2165 * @param USARTx USART Instance 2166 * @retval None 2167 */ 2168 __STATIC_INLINE void LL_USART_DisableIT_IDLE(USART_TypeDef *USARTx) 2169 { 2170 ATOMIC_CLEAR_BIT(USARTx->CR1, USART_CR1_IDLEIE); 2171 } 2172 2173 /** 2174 * @brief Disable RX Not Empty Interrupt 2175 * @rmtoll CR1 RXNEIE LL_USART_DisableIT_RXNE 2176 * @param USARTx USART Instance 2177 * @retval None 2178 */ 2179 __STATIC_INLINE void LL_USART_DisableIT_RXNE(USART_TypeDef *USARTx) 2180 { 2181 ATOMIC_CLEAR_BIT(USARTx->CR1, USART_CR1_RXNEIE); 2182 } 2183 2184 /** 2185 * @brief Disable Transmission Complete Interrupt 2186 * @rmtoll CR1 TCIE LL_USART_DisableIT_TC 2187 * @param USARTx USART Instance 2188 * @retval None 2189 */ 2190 __STATIC_INLINE void LL_USART_DisableIT_TC(USART_TypeDef *USARTx) 2191 { 2192 ATOMIC_CLEAR_BIT(USARTx->CR1, USART_CR1_TCIE); 2193 } 2194 2195 /** 2196 * @brief Disable TX Empty Interrupt 2197 * @rmtoll CR1 TXEIE LL_USART_DisableIT_TXE 2198 * @param USARTx USART Instance 2199 * @retval None 2200 */ 2201 __STATIC_INLINE void LL_USART_DisableIT_TXE(USART_TypeDef *USARTx) 2202 { 2203 ATOMIC_CLEAR_BIT(USARTx->CR1, USART_CR1_TXEIE); 2204 } 2205 2206 /** 2207 * @brief Disable Parity Error Interrupt 2208 * @rmtoll CR1 PEIE LL_USART_DisableIT_PE 2209 * @param USARTx USART Instance 2210 * @retval None 2211 */ 2212 __STATIC_INLINE void LL_USART_DisableIT_PE(USART_TypeDef *USARTx) 2213 { 2214 ATOMIC_CLEAR_BIT(USARTx->CR1, USART_CR1_PEIE); 2215 } 2216 2217 /** 2218 * @brief Disable LIN Break Detection Interrupt 2219 * @note Macro IS_UART_LIN_INSTANCE(USARTx) can be used to check whether or not 2220 * LIN feature is supported by the USARTx instance. 2221 * @rmtoll CR2 LBDIE LL_USART_DisableIT_LBD 2222 * @param USARTx USART Instance 2223 * @retval None 2224 */ 2225 __STATIC_INLINE void LL_USART_DisableIT_LBD(USART_TypeDef *USARTx) 2226 { 2227 CLEAR_BIT(USARTx->CR2, USART_CR2_LBDIE); 2228 } 2229 2230 /** 2231 * @brief Disable Error Interrupt 2232 * @note When set, Error Interrupt Enable Bit is enabling interrupt generation in case of a framing 2233 * error, overrun error or noise flag (FE=1 or ORE=1 or NF=1 in the USARTx_SR register). 2234 * 0: Interrupt is inhibited 2235 * 1: An interrupt is generated when FE=1 or ORE=1 or NF=1 in the USARTx_SR register. 2236 * @rmtoll CR3 EIE LL_USART_DisableIT_ERROR 2237 * @param USARTx USART Instance 2238 * @retval None 2239 */ 2240 __STATIC_INLINE void LL_USART_DisableIT_ERROR(USART_TypeDef *USARTx) 2241 { 2242 ATOMIC_CLEAR_BIT(USARTx->CR3, USART_CR3_EIE); 2243 } 2244 2245 /** 2246 * @brief Disable CTS Interrupt 2247 * @note Macro IS_UART_HWFLOW_INSTANCE(USARTx) can be used to check whether or not 2248 * Hardware Flow control feature is supported by the USARTx instance. 2249 * @rmtoll CR3 CTSIE LL_USART_DisableIT_CTS 2250 * @param USARTx USART Instance 2251 * @retval None 2252 */ 2253 __STATIC_INLINE void LL_USART_DisableIT_CTS(USART_TypeDef *USARTx) 2254 { 2255 ATOMIC_CLEAR_BIT(USARTx->CR3, USART_CR3_CTSIE); 2256 } 2257 2258 /** 2259 * @brief Check if the USART IDLE Interrupt source is enabled or disabled. 2260 * @rmtoll CR1 IDLEIE LL_USART_IsEnabledIT_IDLE 2261 * @param USARTx USART Instance 2262 * @retval State of bit (1 or 0). 2263 */ 2264 __STATIC_INLINE uint32_t LL_USART_IsEnabledIT_IDLE(const USART_TypeDef *USARTx) 2265 { 2266 return (READ_BIT(USARTx->CR1, USART_CR1_IDLEIE) == (USART_CR1_IDLEIE)); 2267 } 2268 2269 /** 2270 * @brief Check if the USART RX Not Empty Interrupt is enabled or disabled. 2271 * @rmtoll CR1 RXNEIE LL_USART_IsEnabledIT_RXNE 2272 * @param USARTx USART Instance 2273 * @retval State of bit (1 or 0). 2274 */ 2275 __STATIC_INLINE uint32_t LL_USART_IsEnabledIT_RXNE(const USART_TypeDef *USARTx) 2276 { 2277 return (READ_BIT(USARTx->CR1, USART_CR1_RXNEIE) == (USART_CR1_RXNEIE)); 2278 } 2279 2280 /** 2281 * @brief Check if the USART Transmission Complete Interrupt is enabled or disabled. 2282 * @rmtoll CR1 TCIE LL_USART_IsEnabledIT_TC 2283 * @param USARTx USART Instance 2284 * @retval State of bit (1 or 0). 2285 */ 2286 __STATIC_INLINE uint32_t LL_USART_IsEnabledIT_TC(const USART_TypeDef *USARTx) 2287 { 2288 return (READ_BIT(USARTx->CR1, USART_CR1_TCIE) == (USART_CR1_TCIE)); 2289 } 2290 2291 /** 2292 * @brief Check if the USART TX Empty Interrupt is enabled or disabled. 2293 * @rmtoll CR1 TXEIE LL_USART_IsEnabledIT_TXE 2294 * @param USARTx USART Instance 2295 * @retval State of bit (1 or 0). 2296 */ 2297 __STATIC_INLINE uint32_t LL_USART_IsEnabledIT_TXE(const USART_TypeDef *USARTx) 2298 { 2299 return (READ_BIT(USARTx->CR1, USART_CR1_TXEIE) == (USART_CR1_TXEIE)); 2300 } 2301 2302 /** 2303 * @brief Check if the USART Parity Error Interrupt is enabled or disabled. 2304 * @rmtoll CR1 PEIE LL_USART_IsEnabledIT_PE 2305 * @param USARTx USART Instance 2306 * @retval State of bit (1 or 0). 2307 */ 2308 __STATIC_INLINE uint32_t LL_USART_IsEnabledIT_PE(const USART_TypeDef *USARTx) 2309 { 2310 return (READ_BIT(USARTx->CR1, USART_CR1_PEIE) == (USART_CR1_PEIE)); 2311 } 2312 2313 /** 2314 * @brief Check if the USART LIN Break Detection Interrupt is enabled or disabled. 2315 * @note Macro IS_UART_LIN_INSTANCE(USARTx) can be used to check whether or not 2316 * LIN feature is supported by the USARTx instance. 2317 * @rmtoll CR2 LBDIE LL_USART_IsEnabledIT_LBD 2318 * @param USARTx USART Instance 2319 * @retval State of bit (1 or 0). 2320 */ 2321 __STATIC_INLINE uint32_t LL_USART_IsEnabledIT_LBD(const USART_TypeDef *USARTx) 2322 { 2323 return (READ_BIT(USARTx->CR2, USART_CR2_LBDIE) == (USART_CR2_LBDIE)); 2324 } 2325 2326 /** 2327 * @brief Check if the USART Error Interrupt is enabled or disabled. 2328 * @rmtoll CR3 EIE LL_USART_IsEnabledIT_ERROR 2329 * @param USARTx USART Instance 2330 * @retval State of bit (1 or 0). 2331 */ 2332 __STATIC_INLINE uint32_t LL_USART_IsEnabledIT_ERROR(const USART_TypeDef *USARTx) 2333 { 2334 return (READ_BIT(USARTx->CR3, USART_CR3_EIE) == (USART_CR3_EIE)); 2335 } 2336 2337 /** 2338 * @brief Check if the USART CTS Interrupt is enabled or disabled. 2339 * @note Macro IS_UART_HWFLOW_INSTANCE(USARTx) can be used to check whether or not 2340 * Hardware Flow control feature is supported by the USARTx instance. 2341 * @rmtoll CR3 CTSIE LL_USART_IsEnabledIT_CTS 2342 * @param USARTx USART Instance 2343 * @retval State of bit (1 or 0). 2344 */ 2345 __STATIC_INLINE uint32_t LL_USART_IsEnabledIT_CTS(const USART_TypeDef *USARTx) 2346 { 2347 return (READ_BIT(USARTx->CR3, USART_CR3_CTSIE) == (USART_CR3_CTSIE)); 2348 } 2349 2350 /** 2351 * @} 2352 */ 2353 2354 /** @defgroup USART_LL_EF_DMA_Management DMA_Management 2355 * @{ 2356 */ 2357 2358 /** 2359 * @brief Enable DMA Mode for reception 2360 * @rmtoll CR3 DMAR LL_USART_EnableDMAReq_RX 2361 * @param USARTx USART Instance 2362 * @retval None 2363 */ 2364 __STATIC_INLINE void LL_USART_EnableDMAReq_RX(USART_TypeDef *USARTx) 2365 { 2366 ATOMIC_SET_BIT(USARTx->CR3, USART_CR3_DMAR); 2367 } 2368 2369 /** 2370 * @brief Disable DMA Mode for reception 2371 * @rmtoll CR3 DMAR LL_USART_DisableDMAReq_RX 2372 * @param USARTx USART Instance 2373 * @retval None 2374 */ 2375 __STATIC_INLINE void LL_USART_DisableDMAReq_RX(USART_TypeDef *USARTx) 2376 { 2377 ATOMIC_CLEAR_BIT(USARTx->CR3, USART_CR3_DMAR); 2378 } 2379 2380 /** 2381 * @brief Check if DMA Mode is enabled for reception 2382 * @rmtoll CR3 DMAR LL_USART_IsEnabledDMAReq_RX 2383 * @param USARTx USART Instance 2384 * @retval State of bit (1 or 0). 2385 */ 2386 __STATIC_INLINE uint32_t LL_USART_IsEnabledDMAReq_RX(const USART_TypeDef *USARTx) 2387 { 2388 return (READ_BIT(USARTx->CR3, USART_CR3_DMAR) == (USART_CR3_DMAR)); 2389 } 2390 2391 /** 2392 * @brief Enable DMA Mode for transmission 2393 * @rmtoll CR3 DMAT LL_USART_EnableDMAReq_TX 2394 * @param USARTx USART Instance 2395 * @retval None 2396 */ 2397 __STATIC_INLINE void LL_USART_EnableDMAReq_TX(USART_TypeDef *USARTx) 2398 { 2399 ATOMIC_SET_BIT(USARTx->CR3, USART_CR3_DMAT); 2400 } 2401 2402 /** 2403 * @brief Disable DMA Mode for transmission 2404 * @rmtoll CR3 DMAT LL_USART_DisableDMAReq_TX 2405 * @param USARTx USART Instance 2406 * @retval None 2407 */ 2408 __STATIC_INLINE void LL_USART_DisableDMAReq_TX(USART_TypeDef *USARTx) 2409 { 2410 ATOMIC_CLEAR_BIT(USARTx->CR3, USART_CR3_DMAT); 2411 } 2412 2413 /** 2414 * @brief Check if DMA Mode is enabled for transmission 2415 * @rmtoll CR3 DMAT LL_USART_IsEnabledDMAReq_TX 2416 * @param USARTx USART Instance 2417 * @retval State of bit (1 or 0). 2418 */ 2419 __STATIC_INLINE uint32_t LL_USART_IsEnabledDMAReq_TX(const USART_TypeDef *USARTx) 2420 { 2421 return (READ_BIT(USARTx->CR3, USART_CR3_DMAT) == (USART_CR3_DMAT)); 2422 } 2423 2424 /** 2425 * @brief Get the data register address used for DMA transfer 2426 * @rmtoll DR DR LL_USART_DMA_GetRegAddr 2427 * @note Address of Data Register is valid for both Transmit and Receive transfers. 2428 * @param USARTx USART Instance 2429 * @retval Address of data register 2430 */ 2431 __STATIC_INLINE uint32_t LL_USART_DMA_GetRegAddr(const USART_TypeDef *USARTx) 2432 { 2433 /* return address of DR register */ 2434 return ((uint32_t) &(USARTx->DR)); 2435 } 2436 2437 /** 2438 * @} 2439 */ 2440 2441 /** @defgroup USART_LL_EF_Data_Management Data_Management 2442 * @{ 2443 */ 2444 2445 /** 2446 * @brief Read Receiver Data register (Receive Data value, 8 bits) 2447 * @rmtoll DR DR LL_USART_ReceiveData8 2448 * @param USARTx USART Instance 2449 * @retval Value between Min_Data=0x00 and Max_Data=0xFF 2450 */ 2451 __STATIC_INLINE uint8_t LL_USART_ReceiveData8(const USART_TypeDef *USARTx) 2452 { 2453 return (uint8_t)(READ_BIT(USARTx->DR, USART_DR_DR)); 2454 } 2455 2456 /** 2457 * @brief Read Receiver Data register (Receive Data value, 9 bits) 2458 * @rmtoll DR DR LL_USART_ReceiveData9 2459 * @param USARTx USART Instance 2460 * @retval Value between Min_Data=0x00 and Max_Data=0x1FF 2461 */ 2462 __STATIC_INLINE uint16_t LL_USART_ReceiveData9(const USART_TypeDef *USARTx) 2463 { 2464 return (uint16_t)(READ_BIT(USARTx->DR, USART_DR_DR)); 2465 } 2466 2467 /** 2468 * @brief Write in Transmitter Data Register (Transmit Data value, 8 bits) 2469 * @rmtoll DR DR LL_USART_TransmitData8 2470 * @param USARTx USART Instance 2471 * @param Value between Min_Data=0x00 and Max_Data=0xFF 2472 * @retval None 2473 */ 2474 __STATIC_INLINE void LL_USART_TransmitData8(USART_TypeDef *USARTx, uint8_t Value) 2475 { 2476 USARTx->DR = Value; 2477 } 2478 2479 /** 2480 * @brief Write in Transmitter Data Register (Transmit Data value, 9 bits) 2481 * @rmtoll DR DR LL_USART_TransmitData9 2482 * @param USARTx USART Instance 2483 * @param Value between Min_Data=0x00 and Max_Data=0x1FF 2484 * @retval None 2485 */ 2486 __STATIC_INLINE void LL_USART_TransmitData9(USART_TypeDef *USARTx, uint16_t Value) 2487 { 2488 USARTx->DR = Value & 0x1FFU; 2489 } 2490 2491 /** 2492 * @} 2493 */ 2494 2495 /** @defgroup USART_LL_EF_Execution Execution 2496 * @{ 2497 */ 2498 2499 /** 2500 * @brief Request Break sending 2501 * @rmtoll CR1 SBK LL_USART_RequestBreakSending 2502 * @param USARTx USART Instance 2503 * @retval None 2504 */ 2505 __STATIC_INLINE void LL_USART_RequestBreakSending(USART_TypeDef *USARTx) 2506 { 2507 SET_BIT(USARTx->CR1, USART_CR1_SBK); 2508 } 2509 2510 /** 2511 * @brief Put USART in Mute mode 2512 * @rmtoll CR1 RWU LL_USART_RequestEnterMuteMode 2513 * @param USARTx USART Instance 2514 * @retval None 2515 */ 2516 __STATIC_INLINE void LL_USART_RequestEnterMuteMode(USART_TypeDef *USARTx) 2517 { 2518 SET_BIT(USARTx->CR1, USART_CR1_RWU); 2519 } 2520 2521 /** 2522 * @brief Put USART in Active mode 2523 * @rmtoll CR1 RWU LL_USART_RequestExitMuteMode 2524 * @param USARTx USART Instance 2525 * @retval None 2526 */ 2527 __STATIC_INLINE void LL_USART_RequestExitMuteMode(USART_TypeDef *USARTx) 2528 { 2529 CLEAR_BIT(USARTx->CR1, USART_CR1_RWU); 2530 } 2531 2532 /** 2533 * @} 2534 */ 2535 2536 #if defined(USE_FULL_LL_DRIVER) 2537 /** @defgroup USART_LL_EF_Init Initialization and de-initialization functions 2538 * @{ 2539 */ 2540 ErrorStatus LL_USART_DeInit(const USART_TypeDef *USARTx); 2541 ErrorStatus LL_USART_Init(USART_TypeDef *USARTx, const LL_USART_InitTypeDef *USART_InitStruct); 2542 void LL_USART_StructInit(LL_USART_InitTypeDef *USART_InitStruct); 2543 ErrorStatus LL_USART_ClockInit(USART_TypeDef *USARTx, const LL_USART_ClockInitTypeDef *USART_ClockInitStruct); 2544 void LL_USART_ClockStructInit(LL_USART_ClockInitTypeDef *USART_ClockInitStruct); 2545 /** 2546 * @} 2547 */ 2548 #endif /* USE_FULL_LL_DRIVER */ 2549 2550 /** 2551 * @} 2552 */ 2553 2554 /** 2555 * @} 2556 */ 2557 2558 #endif /* USART1 || USART2 || USART3 || UART4 || UART5 */ 2559 2560 /** 2561 * @} 2562 */ 2563 2564 #ifdef __cplusplus 2565 } 2566 #endif 2567 2568 #endif /* __STM32F1xx_LL_USART_H */ 2569