This file provides firmware functions to manage the following functionalities of the Universal synchronous asynchronous receiver transmitter (USART): More...

#include "stm32f0xx_usart.h"
#include "stm32f0xx_rcc.h"

Macros
#define	CR1_CLEAR_MASK

#define	CR2_CLOCK_CLEAR_MASK

#define	CR3_CLEAR_MASK ((uint32_t)(USART_CR3_RTSE \| USART_CR3_CTSE))

#define	IT_MASK ((uint32_t)0x000000FF)

Functions
void	USART_DeInit (USART_TypeDef *USARTx)
	Deinitializes the USARTx peripheral registers to their default reset values. More...

void	USART_Init (USART_TypeDef USARTx, USART_InitTypeDef USART_InitStruct)
	Initializes the USARTx peripheral according to the specified parameters in the USART_InitStruct . More...

void	USART_StructInit (USART_InitTypeDef *USART_InitStruct)
	Fills each USART_InitStruct member with its default value. More...

void	USART_ClockInit (USART_TypeDef USARTx, USART_ClockInitTypeDef USART_ClockInitStruct)
	Initializes the USARTx peripheral Clock according to the specified parameters in the USART_ClockInitStruct. More...

void	USART_ClockStructInit (USART_ClockInitTypeDef *USART_ClockInitStruct)
	Fills each USART_ClockInitStruct member with its default value. More...

void	USART_Cmd (USART_TypeDef *USARTx, FunctionalState NewState)
	Enables or disables the specified USART peripheral. More...

void	USART_DirectionModeCmd (USART_TypeDef *USARTx, uint32_t USART_DirectionMode, FunctionalState NewState)
	Enables or disables the USART's transmitter or receiver. More...

void	USART_OverSampling8Cmd (USART_TypeDef *USARTx, FunctionalState NewState)
	Enables or disables the USART's 8x oversampling mode. More...

void	USART_OneBitMethodCmd (USART_TypeDef *USARTx, FunctionalState NewState)
	Enables or disables the USART's one bit sampling method. More...

void	USART_MSBFirstCmd (USART_TypeDef *USARTx, FunctionalState NewState)
	Enables or disables the USART's most significant bit first transmitted/received following the start bit. More...

void	USART_DataInvCmd (USART_TypeDef *USARTx, FunctionalState NewState)
	Enables or disables the binary data inversion. More...

void	USART_InvPinCmd (USART_TypeDef *USARTx, uint32_t USART_InvPin, FunctionalState NewState)
	Enables or disables the Pin(s) active level inversion. More...

void	USART_SWAPPinCmd (USART_TypeDef *USARTx, FunctionalState NewState)
	Enables or disables the swap Tx/Rx pins. More...

void	USART_ReceiverTimeOutCmd (USART_TypeDef *USARTx, FunctionalState NewState)
	Enables or disables the receiver Time Out feature. More...

void	USART_SetReceiverTimeOut (USART_TypeDef *USARTx, uint32_t USART_ReceiverTimeOut)
	Sets the receiver Time Out value. More...

void	USART_SetPrescaler (USART_TypeDef *USARTx, uint8_t USART_Prescaler)
	Sets the system clock prescaler. More...

void	USART_STOPModeCmd (USART_TypeDef *USARTx, FunctionalState NewState)
	Enables or disables the specified USART peripheral in STOP Mode. More...

void	USART_StopModeWakeUpSourceConfig (USART_TypeDef *USARTx, uint32_t USART_WakeUpSource)
	Selects the USART WakeUp method form stop mode. More...

void	USART_AutoBaudRateCmd (USART_TypeDef *USARTx, FunctionalState NewState)
	Enables or disables the Auto Baud Rate. More...

void	USART_AutoBaudRateConfig (USART_TypeDef *USARTx, uint32_t USART_AutoBaudRate)
	Selects the USART auto baud rate method. More...

void	USART_SendData (USART_TypeDef *USARTx, uint16_t Data)
	Transmits single data through the USARTx peripheral. More...

uint16_t	USART_ReceiveData (USART_TypeDef *USARTx)
	Returns the most recent received data by the USARTx peripheral. More...

void	USART_SetAddress (USART_TypeDef *USARTx, uint8_t USART_Address)
	Sets the address of the USART node. More...

void	USART_MuteModeCmd (USART_TypeDef *USARTx, FunctionalState NewState)
	Enables or disables the USART's mute mode. More...

void	USART_MuteModeWakeUpConfig (USART_TypeDef *USARTx, uint32_t USART_WakeUp)
	Selects the USART WakeUp method from mute mode. More...

void	USART_AddressDetectionConfig (USART_TypeDef *USARTx, uint32_t USART_AddressLength)
	Configure the the USART Address detection length. More...

void	USART_LINBreakDetectLengthConfig (USART_TypeDef *USARTx, uint32_t USART_LINBreakDetectLength)
	Sets the USART LIN Break detection length. More...

void	USART_LINCmd (USART_TypeDef *USARTx, FunctionalState NewState)
	Enables or disables the USART's LIN mode. More...

void	USART_HalfDuplexCmd (USART_TypeDef *USARTx, FunctionalState NewState)
	Enables or disables the USART's Half Duplex communication. More...

void	USART_SetGuardTime (USART_TypeDef *USARTx, uint8_t USART_GuardTime)
	Sets the specified USART guard time. More...

void	USART_SmartCardCmd (USART_TypeDef *USARTx, FunctionalState NewState)
	Enables or disables the USART's Smart Card mode. More...

void	USART_SmartCardNACKCmd (USART_TypeDef *USARTx, FunctionalState NewState)
	Enables or disables NACK transmission. More...

void	USART_SetAutoRetryCount (USART_TypeDef *USARTx, uint8_t USART_AutoCount)
	Sets the Smart Card number of retries in transmit and receive. More...

void	USART_SetBlockLength (USART_TypeDef *USARTx, uint8_t USART_BlockLength)
	Sets the Smart Card Block length. More...

void	USART_IrDAConfig (USART_TypeDef *USARTx, uint32_t USART_IrDAMode)
	Configures the USART's IrDA interface. More...

void	USART_IrDACmd (USART_TypeDef *USARTx, FunctionalState NewState)
	Enables or disables the USART's IrDA interface. More...

void	USART_DECmd (USART_TypeDef *USARTx, FunctionalState NewState)
	Enables or disables the USART's DE functionality. More...

void	USART_DEPolarityConfig (USART_TypeDef *USARTx, uint32_t USART_DEPolarity)
	Configures the USART's DE polarity. More...

void	USART_SetDEAssertionTime (USART_TypeDef *USARTx, uint32_t USART_DEAssertionTime)
	Sets the specified RS485 DE assertion time. More...

void	USART_SetDEDeassertionTime (USART_TypeDef *USARTx, uint32_t USART_DEDeassertionTime)
	Sets the specified RS485 DE deassertion time. More...

void	USART_DMACmd (USART_TypeDef *USARTx, uint32_t USART_DMAReq, FunctionalState NewState)
	Enables or disables the USART's DMA interface. More...

void	USART_DMAReceptionErrorConfig (USART_TypeDef *USARTx, uint32_t USART_DMAOnError)
	Enables or disables the USART's DMA interface when reception error occurs. More...

void	USART_ITConfig (USART_TypeDef *USARTx, uint32_t USART_IT, FunctionalState NewState)
	Enables or disables the specified USART interrupts. More...

void	USART_RequestCmd (USART_TypeDef *USARTx, uint32_t USART_Request, FunctionalState NewState)
	Enables the specified USART's Request. More...

void	USART_OverrunDetectionConfig (USART_TypeDef *USARTx, uint32_t USART_OVRDetection)
	Enables or disables the USART's Overrun detection. More...

FlagStatus	USART_GetFlagStatus (USART_TypeDef *USARTx, uint32_t USART_FLAG)
	Checks whether the specified USART flag is set or not. More...

void	USART_ClearFlag (USART_TypeDef *USARTx, uint32_t USART_FLAG)
	Clears the USARTx's pending flags. More...

ITStatus	USART_GetITStatus (USART_TypeDef *USARTx, uint32_t USART_IT)
	Checks whether the specified USART interrupt has occurred or not. More...

void	USART_ClearITPendingBit (USART_TypeDef *USARTx, uint32_t USART_IT)
	Clears the USARTx's interrupt pending bits. More...

Detailed Description

This file provides firmware functions to manage the following functionalities of the Universal synchronous asynchronous receiver transmitter (USART):

Author: MCD Application Team

Version: V1.0.1

Date

20-April-2012

Initialization and Configuration
STOP Mode
AutoBaudRate
Data transfers
Multi-Processor Communication
LIN mode
Half-duplex mode
Smartcard mode
IrDA mode
RS485 mode
DMA transfers management
Interrupts and flags management

 ===============================================================================
                       ##### How to use this driver #####
 ===============================================================================
    [..]
        (#) Enable peripheral clock using RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1, ENABLE)
            function for USART1 or using RCC_APB1PeriphClockCmd(RCC_APB1Periph_USARTx, ENABLE)
            function for USART2 and USART3.
        (#) According to the USART mode, enable the GPIO clocks using 
            RCC_AHBPeriphClockCmd() function. (The I/O can be TX, RX, CTS, 
            or and SCLK). 
        (#) Peripheral's alternate function: 
            (++) Connect the pin to the desired peripherals' Alternate 
                 Function (AF) using GPIO_PinAFConfig() function.
            (++) Configure the desired pin in alternate function by:
                 GPIO_InitStruct->GPIO_Mode = GPIO_Mode_AF.
            (++) Select the type, pull-up/pull-down and output speed via 
                 GPIO_PuPd, GPIO_OType and GPIO_Speed members.
            (++) Call GPIO_Init() function.        
        (#) Program the Baud Rate, Word Length , Stop Bit, Parity, Hardware 
            flow control and Mode(Receiver/Transmitter) using the SPI_Init()
            function.  
        (#) For synchronous mode, enable the clock and program the polarity,
            phase and last bit using the USART_ClockInit() function.  
        (#) Enable the NVIC and the corresponding interrupt using the function 
            USART_ITConfig() if you need to use interrupt mode.   
        (#) When using the DMA mode: 
            (++) Configure the DMA using DMA_Init() function.
            (++) Active the needed channel Request using USART_DMACmd() function.   
        (#) Enable the USART using the USART_Cmd() function.   
        (#) Enable the DMA using the DMA_Cmd() function, when using DMA mode.   
    [..]
            Refer to Multi-Processor, LIN, half-duplex, Smartcard, IrDA sub-sections
            for more details.

Attention

<h2><center>&copy; COPYRIGHT 2012 STMicroelectronics</center></h2>

Licensed under MCD-ST Liberty SW License Agreement V2, (the "License");
You may not use this file except in compliance with the License.
You may obtain a copy of the License at:

       http://www.st.com/software_license_agreement_liberty_v2

Unless required by applicable law or agreed to in writing, software 
distributed under the License is distributed on an "AS IS" BASIS, 
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.

Macros

Functions

Detailed Description