00. 目录
文章目录
- 00. 目录
- 01. USART固件库概述
- 02. USART相关类型
- 03. USART相关其它宏
- 04. USART相关函数
- 05. USART其它
- 06. 附录
- 07. 声明
01. USART固件库概述 【嵌入式天地|【STM32】USART相关函数和类型】stm32f4xx_usart.h 函数的声明和类型的声明
stm32f4xx_usart.c 函数的实现
02. USART相关类型 stm32f4xx_usart.h文件中
USART_InitTypeDef类型
/**
* @briefUSART Init Structure definition
*/ typedef struct
{
uint32_t USART_BaudRate;
/*!< This member configures the USART communication baud rate.
The baud rate is computed using the following formula:
- IntegerDivider = ((PCLKx) / (8 * (OVR8+1) * (USART_InitStruct->USART_BaudRate)))
- FractionalDivider = ((IntegerDivider - ((u32) IntegerDivider)) * 8 * (OVR8+1)) + 0.5
Where OVR8 is the "oversampling by 8 mode" configuration bit in the CR1 register. */uint16_t USART_WordLength;
/*!< Specifies the number of data bits transmitted or received in a frame.
This parameter can be a value of @ref USART_Word_Length */uint16_t USART_StopBits;
/*!< Specifies the number of stop bits transmitted.
This parameter can be a value of @ref USART_Stop_Bits */uint16_t USART_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). */
uint16_t USART_Mode;
/*!< Specifies whether the Receive or Transmit mode is enabled or disabled.
This parameter can be a value of @ref USART_Mode */uint16_t USART_HardwareFlowControl;
/*!< Specifies wether the hardware flow control mode is enabled
or disabled.
This parameter can be a value of @ref USART_Hardware_Flow_Control */
} USART_InitTypeDef;
USART_ClockInitTypeDef类型
/**
* @briefUSART Clock Init Structure definition
*/ typedef struct
{uint16_t USART_Clock;
/*!< Specifies whether the USART clock is enabled or disabled.
This parameter can be a value of @ref USART_Clock */uint16_t USART_CPOL;
/*!< Specifies the steady state of the serial clock.
This parameter can be a value of @ref USART_Clock_Polarity */uint16_t USART_CPHA;
/*!< Specifies the clock transition on which the bit capture is made.
This parameter can be a value of @ref USART_Clock_Phase */uint16_t USART_LastBit;
/*!< 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_ClockInitTypeDef;
USART外设
/** @defgroup USART_Exported_Constants
* @{
*/ #define IS_USART_ALL_PERIPH(PERIPH) (((PERIPH) == USART1) || \
((PERIPH) == USART2) || \
((PERIPH) == USART3) || \
((PERIPH) == UART4)|| \
((PERIPH) == UART5)|| \
((PERIPH) == USART6) || \
((PERIPH) == UART7)|| \
((PERIPH) == UART8)|| \
((PERIPH) == UART9)|| \
((PERIPH) == UART10)) #define IS_USART_1236_PERIPH(PERIPH) (((PERIPH) == USART1) || \
((PERIPH) == USART2) || \
((PERIPH) == USART3) || \
((PERIPH) == USART6))
USART_Word_Length
/** @defgroup USART_Word_Length
* @{
*/ #define USART_WordLength_8b((uint16_t)0x0000)
#define USART_WordLength_9b((uint16_t)0x1000)#define IS_USART_WORD_LENGTH(LENGTH) (((LENGTH) == USART_WordLength_8b) || \
((LENGTH) == USART_WordLength_9b))
USART_Stop_Bits
/** @defgroup USART_Stop_Bits
* @{
*/ #define USART_StopBits_1((uint16_t)0x0000)
#define USART_StopBits_0_5((uint16_t)0x1000)
#define USART_StopBits_2((uint16_t)0x2000)
#define USART_StopBits_1_5((uint16_t)0x3000)
#define IS_USART_STOPBITS(STOPBITS) (((STOPBITS) == USART_StopBits_1) || \
((STOPBITS) == USART_StopBits_0_5) || \
((STOPBITS) == USART_StopBits_2) || \
((STOPBITS) == USART_StopBits_1_5))
USART_Parity
/** @defgroup USART_Parity
* @{
*/ #define USART_Parity_No((uint16_t)0x0000)
#define USART_Parity_Even((uint16_t)0x0400)
#define USART_Parity_Odd((uint16_t)0x0600)
#define IS_USART_PARITY(PARITY) (((PARITY) == USART_Parity_No) || \
((PARITY) == USART_Parity_Even) || \
((PARITY) == USART_Parity_Odd))
USART_Mode
/** @defgroup USART_Mode
* @{
*/ #define USART_Mode_Rx((uint16_t)0x0004)
#define USART_Mode_Tx((uint16_t)0x0008)
#define IS_USART_MODE(MODE) ((((MODE) & (uint16_t)0xFFF3) == 0x00) && ((MODE) != (uint16_t)0x00))
USART_Hardware_Flow_Control
/** @defgroup USART_Hardware_Flow_Control
* @{
*/
#define USART_HardwareFlowControl_None((uint16_t)0x0000)
#define USART_HardwareFlowControl_RTS((uint16_t)0x0100)
#define USART_HardwareFlowControl_CTS((uint16_t)0x0200)
#define USART_HardwareFlowControl_RTS_CTS((uint16_t)0x0300)
#define IS_USART_HARDWARE_FLOW_CONTROL(CONTROL)\
(((CONTROL) == USART_HardwareFlowControl_None) || \
((CONTROL) == USART_HardwareFlowControl_RTS) || \
((CONTROL) == USART_HardwareFlowControl_CTS) || \
((CONTROL) == USART_HardwareFlowControl_RTS_CTS))
USART_Clock
/** @defgroup USART_Clock
* @{
*/
#define USART_Clock_Disable((uint16_t)0x0000)
#define USART_Clock_Enable((uint16_t)0x0800)
#define IS_USART_CLOCK(CLOCK) (((CLOCK) == USART_Clock_Disable) || \
((CLOCK) == USART_Clock_Enable))
USART_Clock_Polarity
/** @defgroup USART_Clock_Polarity
* @{
*/#define USART_CPOL_Low((uint16_t)0x0000)
#define USART_CPOL_High((uint16_t)0x0400)
#define IS_USART_CPOL(CPOL) (((CPOL) == USART_CPOL_Low) || ((CPOL) == USART_CPOL_High))
USART_Clock_Phase
/** @defgroup USART_Clock_Phase
* @{
*/#define USART_CPHA_1Edge((uint16_t)0x0000)
#define USART_CPHA_2Edge((uint16_t)0x0200)
#define IS_USART_CPHA(CPHA) (((CPHA) == USART_CPHA_1Edge) || ((CPHA) == USART_CPHA_2Edge))
USART_Last_Bit
/** @defgroup USART_Last_Bit
* @{
*/#define USART_LastBit_Disable((uint16_t)0x0000)
#define USART_LastBit_Enable((uint16_t)0x0100)
#define IS_USART_LASTBIT(LASTBIT) (((LASTBIT) == USART_LastBit_Disable) || \
((LASTBIT) == USART_LastBit_Enable))
USART_Interrupt_definition
/** @defgroup USART_Interrupt_definition
* @{
*/#define USART_IT_PE((uint16_t)0x0028)
#define USART_IT_TXE((uint16_t)0x0727)
#define USART_IT_TC((uint16_t)0x0626)
#define USART_IT_RXNE((uint16_t)0x0525)
#define USART_IT_ORE_RX((uint16_t)0x0325) /* In case interrupt is generated if the RXNEIE bit is set */
#define USART_IT_IDLE((uint16_t)0x0424)
#define USART_IT_LBD((uint16_t)0x0846)
#define USART_IT_CTS((uint16_t)0x096A)
#define USART_IT_ERR((uint16_t)0x0060)
#define USART_IT_ORE_ER((uint16_t)0x0360) /* In case interrupt is generated if the EIE bit is set */
#define USART_IT_NE((uint16_t)0x0260)
#define USART_IT_FE((uint16_t)0x0160)
#define IS_USART_CONFIG_IT(IT) (((IT) == USART_IT_PE) || ((IT) == USART_IT_TXE) || \
((IT) == USART_IT_TC) || ((IT) == USART_IT_RXNE) || \
((IT) == USART_IT_IDLE) || ((IT) == USART_IT_LBD) || \
((IT) == USART_IT_CTS) || ((IT) == USART_IT_ERR))
#define IS_USART_GET_IT(IT) (((IT) == USART_IT_PE) || ((IT) == USART_IT_TXE) || \
((IT) == USART_IT_TC) || ((IT) == USART_IT_RXNE) || \
((IT) == USART_IT_IDLE) || ((IT) == USART_IT_LBD) || \
((IT) == USART_IT_CTS) || ((IT) == USART_IT_ORE) || \
((IT) == USART_IT_ORE_RX) || ((IT) == USART_IT_ORE_ER) || \
((IT) == USART_IT_NE) || ((IT) == USART_IT_FE))
#define IS_USART_CLEAR_IT(IT) (((IT) == USART_IT_TC) || ((IT) == USART_IT_RXNE) || \
((IT) == USART_IT_LBD) || ((IT) == USART_IT_CTS))
USART_DMA_Requests
/** @defgroup USART_DMA_Requests
* @{
*/#define USART_DMAReq_Tx((uint16_t)0x0080)
#define USART_DMAReq_Rx((uint16_t)0x0040)
#define IS_USART_DMAREQ(DMAREQ) ((((DMAREQ) & (uint16_t)0xFF3F) == 0x00) && ((DMAREQ) != (uint16_t)0x00))
USART_WakeUp_methods
/** @defgroup USART_WakeUp_methods
* @{
*/#define USART_WakeUp_IdleLine((uint16_t)0x0000)
#define USART_WakeUp_AddressMark((uint16_t)0x0800)
#define IS_USART_WAKEUP(WAKEUP) (((WAKEUP) == USART_WakeUp_IdleLine) || \
((WAKEUP) == USART_WakeUp_AddressMark))
USART_LIN_Break_Detection_Length
/** @defgroup USART_LIN_Break_Detection_Length
* @{
*/#define USART_LINBreakDetectLength_10b((uint16_t)0x0000)
#define USART_LINBreakDetectLength_11b((uint16_t)0x0020)
#define IS_USART_LIN_BREAK_DETECT_LENGTH(LENGTH) \
(((LENGTH) == USART_LINBreakDetectLength_10b) || \
((LENGTH) == USART_LINBreakDetectLength_11b))
USART_IrDA_Low_Power
/** @defgroup USART_IrDA_Low_Power
* @{
*/#define USART_IrDAMode_LowPower((uint16_t)0x0004)
#define USART_IrDAMode_Normal((uint16_t)0x0000)
#define IS_USART_IRDA_MODE(MODE) (((MODE) == USART_IrDAMode_LowPower) || \
((MODE) == USART_IrDAMode_Normal))
USART_Flags
/** @defgroup USART_Flags
* @{
*/#define USART_FLAG_CTS((uint16_t)0x0200)
#define USART_FLAG_LBD((uint16_t)0x0100)
#define USART_FLAG_TXE((uint16_t)0x0080)
#define USART_FLAG_TC((uint16_t)0x0040)
#define USART_FLAG_RXNE((uint16_t)0x0020)
#define USART_FLAG_IDLE((uint16_t)0x0010)
#define USART_FLAG_ORE((uint16_t)0x0008)
#define USART_FLAG_NE((uint16_t)0x0004)
#define USART_FLAG_FE((uint16_t)0x0002)
#define USART_FLAG_PE((uint16_t)0x0001)
#define IS_USART_FLAG(FLAG) (((FLAG) == USART_FLAG_PE) || ((FLAG) == USART_FLAG_TXE) || \
((FLAG) == USART_FLAG_TC) || ((FLAG) == USART_FLAG_RXNE) || \
((FLAG) == USART_FLAG_IDLE) || ((FLAG) == USART_FLAG_LBD) || \
((FLAG) == USART_FLAG_CTS) || ((FLAG) == USART_FLAG_ORE) || \
((FLAG) == USART_FLAG_NE) || ((FLAG) == USART_FLAG_FE))#define IS_USART_CLEAR_FLAG(FLAG) ((((FLAG) & (uint16_t)0xFC9F) == 0x00) && ((FLAG) != (uint16_t)0x00))#define IS_USART_BAUDRATE(BAUDRATE) (((BAUDRATE) > 0) && ((BAUDRATE) < 7500001))
#define IS_USART_ADDRESS(ADDRESS) ((ADDRESS) <= 0xF)
#define IS_USART_DATA(DATA) ((DATA) <= 0x1FF)
03. USART相关其它宏 USART_TypeDef
/**
* @brief Universal Synchronous Asynchronous Receiver Transmitter
*/
typedef struct
{
__IO uint16_t SR;
/*!< USART Status register,Address offset: 0x00 */
uint16_tRESERVED0;
/*!< Reserved, 0x02*/
__IO uint16_t DR;
/*!< USART Data register,Address offset: 0x04 */
uint16_tRESERVED1;
/*!< Reserved, 0x06*/
__IO uint16_t BRR;
/*!< USART Baud rate register,Address offset: 0x08 */
uint16_tRESERVED2;
/*!< Reserved, 0x0A*/
__IO uint16_t CR1;
/*!< USART Control register 1,Address offset: 0x0C */
uint16_tRESERVED3;
/*!< Reserved, 0x0E*/
__IO uint16_t CR2;
/*!< USART Control register 2,Address offset: 0x10 */
uint16_tRESERVED4;
/*!< Reserved, 0x12*/
__IO uint16_t CR3;
/*!< USART Control register 3,Address offset: 0x14 */
uint16_tRESERVED5;
/*!< Reserved, 0x16*/
__IO uint16_t GTPR;
/*!< USART Guard time and prescaler register, Address offset: 0x18 */
uint16_tRESERVED6;
/*!< Reserved, 0x1A*/
} USART_TypeDef;
/******************************************************************************/
/**/
/*Universal Synchronous Asynchronous Receiver Transmitter*/
/**/
/******************************************************************************/
/*******************Bit definition for USART_SR register*******************/
#defineUSART_SR_PE((uint16_t)0x0001)/*!#defineUSART_SR_FE((uint16_t)0x0002)/*!04. USART相关函数
/*Function used to set the USART configuration to the default reset state ***/
void USART_DeInit(USART_TypeDef* USARTx);
/* Initialization and Configuration functions *********************************/
void USART_Init(USART_TypeDef* USARTx, USART_InitTypeDef* USART_InitStruct);
void USART_StructInit(USART_InitTypeDef* USART_InitStruct);
void USART_ClockInit(USART_TypeDef* USARTx, USART_ClockInitTypeDef* USART_ClockInitStruct);
void USART_ClockStructInit(USART_ClockInitTypeDef* USART_ClockInitStruct);
void USART_Cmd(USART_TypeDef* USARTx, FunctionalState NewState);
void USART_SetPrescaler(USART_TypeDef* USARTx, uint8_t USART_Prescaler);
void USART_OverSampling8Cmd(USART_TypeDef* USARTx, FunctionalState NewState);
void USART_OneBitMethodCmd(USART_TypeDef* USARTx, FunctionalState NewState);
/* Data transfers functions ***************************************************/
void USART_SendData(USART_TypeDef* USARTx, uint16_t Data);
uint16_t USART_ReceiveData(USART_TypeDef* USARTx);
/* Multi-Processor Communication functions ************************************/
void USART_SetAddress(USART_TypeDef* USARTx, uint8_t USART_Address);
void USART_WakeUpConfig(USART_TypeDef* USARTx, uint16_t USART_WakeUp);
void USART_ReceiverWakeUpCmd(USART_TypeDef* USARTx, FunctionalState NewState);
/* LIN mode functions *********************************************************/
void USART_LINBreakDetectLengthConfig(USART_TypeDef* USARTx, uint16_t USART_LINBreakDetectLength);
void USART_LINCmd(USART_TypeDef* USARTx, FunctionalState NewState);
void USART_SendBreak(USART_TypeDef* USARTx);
/* Half-duplex mode function **************************************************/
void USART_HalfDuplexCmd(USART_TypeDef* USARTx, FunctionalState NewState);
/* Smartcard mode functions ***************************************************/
void USART_SmartCardCmd(USART_TypeDef* USARTx, FunctionalState NewState);
void USART_SmartCardNACKCmd(USART_TypeDef* USARTx, FunctionalState NewState);
void USART_SetGuardTime(USART_TypeDef* USARTx, uint8_t USART_GuardTime);
/* IrDA mode functions ********************************************************/
void USART_IrDAConfig(USART_TypeDef* USARTx, uint16_t USART_IrDAMode);
void USART_IrDACmd(USART_TypeDef* USARTx, FunctionalState NewState);
/* DMA transfers management functions *****************************************/
void USART_DMACmd(USART_TypeDef* USARTx, uint16_t USART_DMAReq, FunctionalState NewState);
/* Interrupts and flags management functions **********************************/
void USART_ITConfig(USART_TypeDef* USARTx, uint16_t USART_IT, FunctionalState NewState);
FlagStatus USART_GetFlagStatus(USART_TypeDef* USARTx, uint16_t USART_FLAG);
void USART_ClearFlag(USART_TypeDef* USARTx, uint16_t USART_FLAG);
ITStatus USART_GetITStatus(USART_TypeDef* USARTx, uint16_t USART_IT);
void USART_ClearITPendingBit(USART_TypeDef* USARTx, uint16_t USART_IT);
05. USART其它 USART基地址
#define USART2_BASE(APB1PERIPH_BASE + 0x4400)
#define USART3_BASE(APB1PERIPH_BASE + 0x4800)
#define UART4_BASE(APB1PERIPH_BASE + 0x4C00)
#define UART5_BASE(APB1PERIPH_BASE + 0x5000)#define USART1_BASE(APB2PERIPH_BASE + 0x1000)
#define USART6_BASE(APB2PERIPH_BASE + 0x1400)
#define UART9_BASE(APB2PERIPH_BASE + 0x1800U)
#define UART10_BASE(APB2PERIPH_BASE + 0x1C00U)
06. 附录 6.1 【STM32】STM32系列教程汇总
网址：【STM32】STM32系列教程汇总
07. 声明
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