/** ****************************************************************************** * @file stm32f4xx_hal_usart.h * @author MCD Application Team * @version V1.4.1 * @date 09-October-2015 * @brief Header file of USART HAL module. ****************************************************************************** * @attention * *

© COPYRIGHT(c) 2015 STMicroelectronics

* * Redistribution and use in source and binary forms, with or without modification, * are permitted provided that the following conditions are met: * 1. Redistributions of source code must retain the above copyright notice, * this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright notice, * this list of conditions and the following disclaimer in the documentation * and/or other materials provided with the distribution. * 3. Neither the name of STMicroelectronics nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * ****************************************************************************** */ /* Define to prevent recursive inclusion -------------------------------------*/ #ifndef __STM32F4xx_HAL_USART_H #define __STM32F4xx_HAL_USART_H #ifdef __cplusplus extern "C" { #endif /* Includes ------------------------------------------------------------------*/ #include "stm32f4xx_hal_def.h" /** @addtogroup STM32F4xx_HAL_Driver * @{ */ /** @addtogroup USART * @{ */ /* Exported types ------------------------------------------------------------*/ /** @defgroup USART_Exported_Types USART Exported Types * @{ */ /** * @brief USART Init Structure definition */ typedef struct { uint32_t BaudRate; /*!< This member configures the Usart communication baud rate. The baud rate is computed using the following formula: - IntegerDivider = ((PCLKx) / (8 * (husart->Init.BaudRate))) - FractionalDivider = ((IntegerDivider - ((uint32_t) IntegerDivider)) * 8) + 0.5 */ uint32_t WordLength; /*!< Specifies the number of data bits transmitted or received in a frame. This parameter can be a value of @ref USART_Word_Length */ uint32_t StopBits; /*!< Specifies the number of stop bits transmitted. This parameter can be a value of @ref USART_Stop_Bits */ uint32_t Parity; /*!< Specifies the parity mode. This parameter can be a value of @ref USART_Parity @note When parity is enabled, the computed parity is inserted at the MSB position of the transmitted data (9th bit when the word length is set to 9 data bits; 8th bit when the word length is set to 8 data bits). */ uint32_t Mode; /*!< Specifies whether the Receive or Transmit mode is enabled or disabled. This parameter can be a value of @ref USART_Mode */ uint32_t CLKPolarity; /*!< Specifies the steady state of the serial clock. This parameter can be a value of @ref USART_Clock_Polarity */ uint32_t CLKPhase; /*!< Specifies the clock transition on which the bit capture is made. This parameter can be a value of @ref USART_Clock_Phase */ uint32_t CLKLastBit; /*!< Specifies whether the clock pulse corresponding to the last transmitted data bit (MSB) has to be output on the SCLK pin in synchronous mode. This parameter can be a value of @ref USART_Last_Bit */ }USART_InitTypeDef; /** * @brief HAL State structures definition */ typedef enum { HAL_USART_STATE_RESET = 0x00, /*!< Peripheral is not yet Initialized */ HAL_USART_STATE_READY = 0x01, /*!< Peripheral Initialized and ready for use */ HAL_USART_STATE_BUSY = 0x02, /*!< an internal process is ongoing */ HAL_USART_STATE_BUSY_TX = 0x12, /*!< Data Transmission process is ongoing */ HAL_USART_STATE_BUSY_RX = 0x22, /*!< Data Reception process is ongoing */ HAL_USART_STATE_BUSY_TX_RX = 0x32, /*!< Data Transmission Reception process is ongoing */ HAL_USART_STATE_TIMEOUT = 0x03, /*!< Timeout state */ HAL_USART_STATE_ERROR = 0x04 /*!< Error */ }HAL_USART_StateTypeDef; /** * @brief USART handle Structure definition */ typedef struct { USART_TypeDef *Instance; /* USART registers base address */ USART_InitTypeDef Init; /* Usart communication parameters */ uint8_t *pTxBuffPtr; /* Pointer to Usart Tx transfer Buffer */ uint16_t TxXferSize; /* Usart Tx Transfer size */ __IO uint16_t TxXferCount; /* Usart Tx Transfer Counter */ uint8_t *pRxBuffPtr; /* Pointer to Usart Rx transfer Buffer */ uint16_t RxXferSize; /* Usart Rx Transfer size */ __IO uint16_t RxXferCount; /* Usart Rx Transfer Counter */ DMA_HandleTypeDef *hdmatx; /* Usart Tx DMA Handle parameters */ DMA_HandleTypeDef *hdmarx; /* Usart Rx DMA Handle parameters */ HAL_LockTypeDef Lock; /* Locking object */ __IO HAL_USART_StateTypeDef State; /* Usart communication state */ __IO uint32_t ErrorCode; /* USART Error code */ }USART_HandleTypeDef; /** * @} */ /* Exported constants --------------------------------------------------------*/ /** @defgroup USART_Exported_Constants USART Exported Constants * @{ */ /** @defgroup USART_Error_Code USART Error Code * @brief USART Error Code * @{ */ #define HAL_USART_ERROR_NONE ((uint32_t)0x00000000) /*!< No error */ #define HAL_USART_ERROR_PE ((uint32_t)0x00000001) /*!< Parity error */ #define HAL_USART_ERROR_NE ((uint32_t)0x00000002) /*!< Noise error */ #define HAL_USART_ERROR_FE ((uint32_t)0x00000004) /*!< Frame error */ #define HAL_USART_ERROR_ORE ((uint32_t)0x00000008) /*!< Overrun error */ #define HAL_USART_ERROR_DMA ((uint32_t)0x00000010) /*!< DMA transfer error */ /** * @} */ /** @defgroup USART_Word_Length USART Word Length * @{ */ #define USART_WORDLENGTH_8B ((uint32_t)0x00000000) #define USART_WORDLENGTH_9B ((uint32_t)USART_CR1_M) /** * @} */ /** @defgroup USART_Stop_Bits USART Number of Stop Bits * @{ */ #define USART_STOPBITS_1 ((uint32_t)0x00000000) #define USART_STOPBITS_0_5 ((uint32_t)USART_CR2_STOP_0) #define USART_STOPBITS_2 ((uint32_t)USART_CR2_STOP_1) #define USART_STOPBITS_1_5 ((uint32_t)(USART_CR2_STOP_0 | USART_CR2_STOP_1)) /** * @} */ /** @defgroup USART_Parity USART Parity * @{ */ #define USART_PARITY_NONE ((uint32_t)0x00000000) #define USART_PARITY_EVEN ((uint32_t)USART_CR1_PCE) #define USART_PARITY_ODD ((uint32_t)(USART_CR1_PCE | USART_CR1_PS)) /** * @} */ /** @defgroup USART_Mode USART Mode * @{ */ #define USART_MODE_RX ((uint32_t)USART_CR1_RE) #define USART_MODE_TX ((uint32_t)USART_CR1_TE) #define USART_MODE_TX_RX ((uint32_t)(USART_CR1_TE |USART_CR1_RE)) /** * @} */ /** @defgroup USART_Clock USART Clock * @{ */ #define USART_CLOCK_DISABLE ((uint32_t)0x00000000) #define USART_CLOCK_ENABLE ((uint32_t)USART_CR2_CLKEN) /** * @} */ /** @defgroup USART_Clock_Polarity USART Clock Polarity * @{ */ #define USART_POLARITY_LOW ((uint32_t)0x00000000) #define USART_POLARITY_HIGH ((uint32_t)USART_CR2_CPOL) /** * @} */ /** @defgroup USART_Clock_Phase USART Clock Phase * @{ */ #define USART_PHASE_1EDGE ((uint32_t)0x00000000) #define USART_PHASE_2EDGE ((uint32_t)USART_CR2_CPHA) /** * @} */ /** @defgroup USART_Last_Bit USART Last Bit * @{ */ #define USART_LASTBIT_DISABLE ((uint32_t)0x00000000) #define USART_LASTBIT_ENABLE ((uint32_t)USART_CR2_LBCL) /** * @} */ /** @defgroup USART_NACK_State USART NACK State * @{ */ #define USART_NACK_ENABLE ((uint32_t)USART_CR3_NACK) #define USART_NACK_DISABLE ((uint32_t)0x00000000) /** * @} */ /** @defgroup USART_Flags USART Flags * Elements values convention: 0xXXXX * - 0xXXXX : Flag mask in the SR register * @{ */ #define USART_FLAG_TXE ((uint32_t)0x00000080) #define USART_FLAG_TC ((uint32_t)0x00000040) #define USART_FLAG_RXNE ((uint32_t)0x00000020) #define USART_FLAG_IDLE ((uint32_t)0x00000010) #define USART_FLAG_ORE ((uint32_t)0x00000008) #define USART_FLAG_NE ((uint32_t)0x00000004) #define USART_FLAG_FE ((uint32_t)0x00000002) #define USART_FLAG_PE ((uint32_t)0x00000001) /** * @} */ /** @defgroup USART_Interrupt_definition USART Interrupts Definition * Elements values convention: 0xY000XXXX * - XXXX : Interrupt mask in the XX register * - Y : Interrupt source register (2bits) * - 01: CR1 register * - 10: CR2 register * - 11: CR3 register * * @{ */ #define USART_IT_PE ((uint32_t)(USART_CR1_REG_INDEX << 28 | USART_CR1_PEIE)) #define USART_IT_TXE ((uint32_t)(USART_CR1_REG_INDEX << 28 | USART_CR1_TXEIE)) #define USART_IT_TC ((uint32_t)(USART_CR1_REG_INDEX << 28 | USART_CR1_TCIE)) #define USART_IT_RXNE ((uint32_t)(USART_CR1_REG_INDEX << 28 | USART_CR1_RXNEIE)) #define USART_IT_IDLE ((uint32_t)(USART_CR1_REG_INDEX << 28 | USART_CR1_IDLEIE)) #define USART_IT_LBD ((uint32_t)(USART_CR2_REG_INDEX << 28 | USART_CR2_LBDIE)) #define USART_IT_CTS ((uint32_t)(USART_CR3_REG_INDEX << 28 | USART_CR3_CTSIE)) #define USART_IT_ERR ((uint32_t)(USART_CR3_REG_INDEX << 28 | USART_CR3_EIE)) /** * @} */ /** * @} */ /* Exported macro ------------------------------------------------------------*/ /** @defgroup USART_Exported_Macros USART Exported Macros * @{ */ /** @brief Reset USART handle state * @param __HANDLE__: specifies the USART Handle. * This parameter can be USARTx where x: 1, 2, 3 or 6 to select the USART peripheral. * @retval None */ #define __HAL_USART_RESET_HANDLE_STATE(__HANDLE__) ((__HANDLE__)->State = HAL_USART_STATE_RESET) /** @brief Checks whether the specified Smartcard flag is set or not. * @param __HANDLE__: specifies the USART Handle. * This parameter can be USARTx where x: 1, 2, 3 or 6 to select the USART peripheral. * @param __FLAG__: specifies the flag to check. * This parameter can be one of the following values: * @arg USART_FLAG_TXE: Transmit data register empty flag * @arg USART_FLAG_TC: Transmission Complete flag * @arg USART_FLAG_RXNE: Receive data register not empty flag * @arg USART_FLAG_IDLE: Idle Line detection flag * @arg USART_FLAG_ORE: Overrun Error flag * @arg USART_FLAG_NE: Noise Error flag * @arg USART_FLAG_FE: Framing Error flag * @arg USART_FLAG_PE: Parity Error flag * @retval The new state of __FLAG__ (TRUE or FALSE). */ #define __HAL_USART_GET_FLAG(__HANDLE__, __FLAG__) (((__HANDLE__)->Instance->SR & (__FLAG__)) == (__FLAG__)) /** @brief Clears the specified Smartcard pending flags. * @param __HANDLE__: specifies the USART Handle. * This parameter can be USARTx where x: 1, 2, 3 or 6 to select the USART peripheral. * @param __FLAG__: specifies the flag to check. * This parameter can be any combination of the following values: * @arg USART_FLAG_TC: Transmission Complete flag. * @arg USART_FLAG_RXNE: Receive data register not empty flag. * * @note PE (Parity error), FE (Framing error), NE (Noise error), ORE (Overrun * error) and IDLE (Idle line detected) flags are cleared by software * sequence: a read operation to USART_SR register followed by a read * operation to USART_DR register. * @note RXNE flag can be also cleared by a read to the USART_DR register. * @note TC flag can be also cleared by software sequence: a read operation to * USART_SR register followed by a write operation to USART_DR register. * @note TXE flag is cleared only by a write to the USART_DR register. * * @retval None */ #define __HAL_USART_CLEAR_FLAG(__HANDLE__, __FLAG__) ((__HANDLE__)->Instance->SR = ~(__FLAG__)) /** @brief Clear the USART PE pending flag. * @param __HANDLE__: specifies the USART Handle. * This parameter can be USARTx where x: 1, 2, 3 or 6 to select the USART peripheral. * @retval None */ #define __HAL_USART_CLEAR_PEFLAG(__HANDLE__) \ do{ \ __IO uint32_t tmpreg; \ tmpreg = (__HANDLE__)->Instance->SR; \ tmpreg = (__HANDLE__)->Instance->DR; \ UNUSED(tmpreg); \ } while(0) /** @brief Clear the USART FE pending flag. * @param __HANDLE__: specifies the USART Handle. * This parameter can be USARTx where x: 1, 2, 3 or 6 to select the USART peripheral. * @retval None */ #define __HAL_USART_CLEAR_FEFLAG(__HANDLE__) __HAL_USART_CLEAR_PEFLAG(__HANDLE__) /** @brief Clear the USART NE pending flag. * @param __HANDLE__: specifies the USART Handle. * This parameter can be USARTx where x: 1, 2, 3 or 6 to select the USART peripheral. * @retval None */ #define __HAL_USART_CLEAR_NEFLAG(__HANDLE__) __HAL_USART_CLEAR_PEFLAG(__HANDLE__) /** @brief Clear the UART ORE pending flag. * @param __HANDLE__: specifies the USART Handle. * This parameter can be USARTx where x: 1, 2, 3 or 6 to select the USART peripheral. * @retval None */ #define __HAL_USART_CLEAR_OREFLAG(__HANDLE__) __HAL_USART_CLEAR_PEFLAG(__HANDLE__) /** @brief Clear the USART IDLE pending flag. * @param __HANDLE__: specifies the USART Handle. * This parameter can be USARTx where x: 1, 2, 3 or 6 to select the USART peripheral. * @retval None */ #define __HAL_USART_CLEAR_IDLEFLAG(__HANDLE__) __HAL_USART_CLEAR_PEFLAG(__HANDLE__) /** @brief Enables or disables the specified USART interrupts. * @param __HANDLE__: specifies the USART Handle. * This parameter can be USARTx where x: 1, 2, 3 or 6 to select the USART peripheral. * @param __INTERRUPT__: specifies the USART interrupt source to check. * This parameter can be one of the following values: * @arg USART_IT_TXE: Transmit Data Register empty interrupt * @arg USART_IT_TC: Transmission complete interrupt * @arg USART_IT_RXNE: Receive Data register not empty interrupt * @arg USART_IT_IDLE: Idle line detection interrupt * @arg USART_IT_PE: Parity Error interrupt * @arg USART_IT_ERR: Error interrupt(Frame error, noise error, overrun error) * This parameter can be: ENABLE or DISABLE. * @retval None */ #define __HAL_USART_ENABLE_IT(__HANDLE__, __INTERRUPT__) ((((__INTERRUPT__) >> 28) == 1)? ((__HANDLE__)->Instance->CR1 |= ((__INTERRUPT__) & USART_IT_MASK)): \ (((__INTERRUPT__) >> 28) == 2)? ((__HANDLE__)->Instance->CR2 |= ((__INTERRUPT__) & USART_IT_MASK)): \ ((__HANDLE__)->Instance->CR3 |= ((__INTERRUPT__) & USART_IT_MASK))) #define __HAL_USART_DISABLE_IT(__HANDLE__, __INTERRUPT__) ((((__INTERRUPT__) >> 28) == 1)? ((__HANDLE__)->Instance->CR1 &= ~((__INTERRUPT__) & USART_IT_MASK)): \ (((__INTERRUPT__) >> 28) == 2)? ((__HANDLE__)->Instance->CR2 &= ~((__INTERRUPT__) & USART_IT_MASK)): \ ((__HANDLE__)->Instance->CR3 &= ~ ((__INTERRUPT__) & USART_IT_MASK))) /** @brief Checks whether the specified USART interrupt has occurred or not. * @param __HANDLE__: specifies the USART Handle. * This parameter can be USARTx where x: 1, 2, 3 or 6 to select the USART peripheral. * @param __IT__: specifies the USART interrupt source to check. * This parameter can be one of the following values: * @arg USART_IT_TXE: Transmit Data Register empty interrupt * @arg USART_IT_TC: Transmission complete interrupt * @arg USART_IT_RXNE: Receive Data register not empty interrupt * @arg USART_IT_IDLE: Idle line detection interrupt * @arg USART_IT_ERR: Error interrupt * @arg USART_IT_PE: Parity Error interrupt * @retval The new state of __IT__ (TRUE or FALSE). */ #define __HAL_USART_GET_IT_SOURCE(__HANDLE__, __IT__) (((((__IT__) >> 28) == 1)? (__HANDLE__)->Instance->CR1:(((((uint32_t)(__IT__)) >> 28) == 2)? \ (__HANDLE__)->Instance->CR2 : (__HANDLE__)->Instance->CR3)) & (((uint32_t)(__IT__)) & USART_IT_MASK)) /** @brief Macro to enable the USART's one bit sample method * @param __HANDLE__: specifies the USART Handle. * @retval None */ #define __HAL_USART_ONE_BIT_SAMPLE_ENABLE(__HANDLE__) ((__HANDLE__)->Instance->CR3|= USART_CR3_ONEBIT) /** @brief Macro to disable the USART's one bit sample method * @param __HANDLE__: specifies the USART Handle. * @retval None */ #define __HAL_USART_ONE_BIT_SAMPLE_DISABLE(__HANDLE__) ((__HANDLE__)->Instance->CR3 &= (uint16_t)~((uint16_t)USART_CR3_ONEBIT)) /** @brief Enable USART * @param __HANDLE__: specifies the USART Handle. * USART Handle selects the USARTx peripheral (USART availability and x value depending on device). * @retval None */ #define __HAL_USART_ENABLE(__HANDLE__) ( (__HANDLE__)->Instance->CR1 |= USART_CR1_UE) /** @brief Disable USART * @param __HANDLE__: specifies the USART Handle. * USART Handle selects the USARTx peripheral (USART availability and x value depending on device). * @retval None */ #define __HAL_USART_DISABLE(__HANDLE__) ( (__HANDLE__)->Instance->CR1 &= ~USART_CR1_UE) /** * @} */ /* Exported functions --------------------------------------------------------*/ /** @addtogroup USART_Exported_Functions * @{ */ /** @addtogroup USART_Exported_Functions_Group1 * @{ */ /* Initialization/de-initialization functions **********************************/ HAL_StatusTypeDef HAL_USART_Init(USART_HandleTypeDef *husart); HAL_StatusTypeDef HAL_USART_DeInit(USART_HandleTypeDef *husart); void HAL_USART_MspInit(USART_HandleTypeDef *husart); void HAL_USART_MspDeInit(USART_HandleTypeDef *husart); /** * @} */ /** @addtogroup USART_Exported_Functions_Group2 * @{ */ /* IO operation functions *******************************************************/ HAL_StatusTypeDef HAL_USART_Transmit(USART_HandleTypeDef *husart, uint8_t *pTxData, uint16_t Size, uint32_t Timeout); HAL_StatusTypeDef HAL_USART_Receive(USART_HandleTypeDef *husart, uint8_t *pRxData, uint16_t Size, uint32_t Timeout); HAL_StatusTypeDef HAL_USART_TransmitReceive(USART_HandleTypeDef *husart, uint8_t *pTxData, uint8_t *pRxData, uint16_t Size, uint32_t Timeout); HAL_StatusTypeDef HAL_USART_Transmit_IT(USART_HandleTypeDef *husart, uint8_t *pTxData, uint16_t Size); HAL_StatusTypeDef HAL_USART_Receive_IT(USART_HandleTypeDef *husart, uint8_t *pRxData, uint16_t Size); HAL_StatusTypeDef HAL_USART_TransmitReceive_IT(USART_HandleTypeDef *husart, uint8_t *pTxData, uint8_t *pRxData, uint16_t Size); HAL_StatusTypeDef HAL_USART_Transmit_DMA(USART_HandleTypeDef *husart, uint8_t *pTxData, uint16_t Size); HAL_StatusTypeDef HAL_USART_Receive_DMA(USART_HandleTypeDef *husart, uint8_t *pRxData, uint16_t Size); HAL_StatusTypeDef HAL_USART_TransmitReceive_DMA(USART_HandleTypeDef *husart, uint8_t *pTxData, uint8_t *pRxData, uint16_t Size); HAL_StatusTypeDef HAL_USART_DMAPause(USART_HandleTypeDef *husart); HAL_StatusTypeDef HAL_USART_DMAResume(USART_HandleTypeDef *husart); HAL_StatusTypeDef HAL_USART_DMAStop(USART_HandleTypeDef *husart); void HAL_USART_IRQHandler(USART_HandleTypeDef *husart); void HAL_USART_TxCpltCallback(USART_HandleTypeDef *husart); void HAL_USART_TxHalfCpltCallback(USART_HandleTypeDef *husart); void HAL_USART_RxCpltCallback(USART_HandleTypeDef *husart); void HAL_USART_RxHalfCpltCallback(USART_HandleTypeDef *husart); void HAL_USART_TxRxCpltCallback(USART_HandleTypeDef *husart); void HAL_USART_ErrorCallback(USART_HandleTypeDef *husart); /** * @} */ /** @addtogroup USART_Exported_Functions_Group3 * @{ */ /* Peripheral State functions ************************************************/ HAL_USART_StateTypeDef HAL_USART_GetState(USART_HandleTypeDef *husart); uint32_t HAL_USART_GetError(USART_HandleTypeDef *husart); /** * @} */ /** * @} */ /* Private types -------------------------------------------------------------*/ /* Private variables ---------------------------------------------------------*/ /* Private constants ---------------------------------------------------------*/ /** @defgroup USART_Private_Constants USART Private Constants * @{ */ /** @brief USART interruptions flag mask * */ #define USART_IT_MASK ((uint32_t) USART_CR1_PEIE | USART_CR1_TXEIE | USART_CR1_TCIE | USART_CR1_RXNEIE | \ USART_CR1_IDLEIE | USART_CR2_LBDIE | USART_CR3_CTSIE | USART_CR3_EIE ) #define USART_CR1_REG_INDEX 1 #define USART_CR2_REG_INDEX 2 #define USART_CR3_REG_INDEX 3 /** * @} */ /* Private macros ------------------------------------------------------------*/ /** @defgroup USART_Private_Macros USART Private Macros * @{ */ #define IS_USART_NACK_STATE(NACK) (((NACK) == USART_NACK_ENABLE) || \ ((NACK) == USART_NACK_DISABLE)) #define IS_USART_LASTBIT(LASTBIT) (((LASTBIT) == USART_LASTBIT_DISABLE) || \ ((LASTBIT) == USART_LASTBIT_ENABLE)) #define IS_USART_PHASE(CPHA) (((CPHA) == USART_PHASE_1EDGE) || ((CPHA) == USART_PHASE_2EDGE)) #define IS_USART_POLARITY(CPOL) (((CPOL) == USART_POLARITY_LOW) || ((CPOL) == USART_POLARITY_HIGH)) #define IS_USART_CLOCK(CLOCK) (((CLOCK) == USART_CLOCK_DISABLE) || \ ((CLOCK) == USART_CLOCK_ENABLE)) #define IS_USART_WORD_LENGTH(LENGTH) (((LENGTH) == USART_WORDLENGTH_8B) || \ ((LENGTH) == USART_WORDLENGTH_9B)) #define IS_USART_STOPBITS(STOPBITS) (((STOPBITS) == USART_STOPBITS_1) || \ ((STOPBITS) == USART_STOPBITS_0_5) || \ ((STOPBITS) == USART_STOPBITS_1_5) || \ ((STOPBITS) == USART_STOPBITS_2)) #define IS_USART_PARITY(PARITY) (((PARITY) == USART_PARITY_NONE) || \ ((PARITY) == USART_PARITY_EVEN) || \ ((PARITY) == USART_PARITY_ODD)) #define IS_USART_MODE(MODE) ((((MODE) & (uint32_t)0xFFF3) == 0x00) && ((MODE) != (uint32_t)0x00)) #define IS_USART_BAUDRATE(BAUDRATE) ((BAUDRATE) < 10500001) #define USART_DIV(_PCLK_, _BAUD_) (((_PCLK_)*25)/(2*(_BAUD_))) #define USART_DIVMANT(_PCLK_, _BAUD_) (USART_DIV((_PCLK_), (_BAUD_))/100) #define USART_DIVFRAQ(_PCLK_, _BAUD_) (((USART_DIV((_PCLK_), (_BAUD_)) - (USART_DIVMANT((_PCLK_), (_BAUD_)) * 100)) * 16 + 50) / 100) #define USART_BRR(_PCLK_, _BAUD_) ((USART_DIVMANT((_PCLK_), (_BAUD_)) << 4)|(USART_DIVFRAQ((_PCLK_), (_BAUD_)) & 0x0F)) /** * @} */ /* Private functions ---------------------------------------------------------*/ /** @defgroup USART_Private_Functions USART Private Functions * @{ */ /** * @} */ /** * @} */ /** * @} */ #ifdef __cplusplus } #endif #endif /* __STM32F4xx_HAL_USART_H */ /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/ o_zeroise&id=26f12903dab2fafeaaefb02349763618ce96d070'>26f1290

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