Macros | Functions
stm32f4xx_usart.c File Reference

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

#include "stm32f4xx_usart.h"
#include "stm32f4xx_rcc.h"
Include dependency graph for stm32f4xx_usart.c:

Go to the source code of this file.

Macros

#define CR1_CLEAR_MASK
 
#define CR2_CLOCK_CLEAR_MASK
 
#define CR3_CLEAR_MASK   ((uint16_t)(USART_CR3_RTSE | USART_CR3_CTSE))
 
#define IT_MASK   ((uint16_t)0x001F)
 

Functions

void USART_ClearFlag (USART_TypeDef *USARTx, uint16_t USART_FLAG)
 Clears the USARTx's pending flags. More...
 
void USART_ClearITPendingBit (USART_TypeDef *USARTx, uint16_t USART_IT)
 Clears the USARTx's interrupt pending bits. 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_DeInit (USART_TypeDef *USARTx)
 Deinitializes the USARTx peripheral registers to their default reset values. More...
 
void USART_DMACmd (USART_TypeDef *USARTx, uint16_t USART_DMAReq, FunctionalState NewState)
 Enables or disables the USART's DMA interface. More...
 
FlagStatus USART_GetFlagStatus (USART_TypeDef *USARTx, uint16_t USART_FLAG)
 Checks whether the specified USART flag is set or not. More...
 
ITStatus USART_GetITStatus (USART_TypeDef *USARTx, uint16_t USART_IT)
 Checks whether the specified USART interrupt has occurred or not. More...
 
void USART_HalfDuplexCmd (USART_TypeDef *USARTx, FunctionalState NewState)
 Enables or disables the USART's Half Duplex communication. 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_IrDACmd (USART_TypeDef *USARTx, FunctionalState NewState)
 Enables or disables the USART's IrDA interface. More...
 
void USART_IrDAConfig (USART_TypeDef *USARTx, uint16_t USART_IrDAMode)
 Configures the USART's IrDA interface. More...
 
void USART_ITConfig (USART_TypeDef *USARTx, uint16_t USART_IT, FunctionalState NewState)
 Enables or disables the specified USART interrupts. More...
 
void USART_LINBreakDetectLengthConfig (USART_TypeDef *USARTx, uint16_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_OneBitMethodCmd (USART_TypeDef *USARTx, FunctionalState NewState)
 Enables or disables the USART's one bit sampling method. More...
 
void USART_OverSampling8Cmd (USART_TypeDef *USARTx, FunctionalState NewState)
 Enables or disables the USART's 8x oversampling mode. More...
 
uint16_t USART_ReceiveData (USART_TypeDef *USARTx)
 Returns the most recent received data by the USARTx peripheral. More...
 
void USART_ReceiverWakeUpCmd (USART_TypeDef *USARTx, FunctionalState NewState)
 Determines if the USART is in mute mode or not. More...
 
void USART_SendBreak (USART_TypeDef *USARTx)
 Transmits break characters. More...
 
void USART_SendData (USART_TypeDef *USARTx, uint16_t Data)
 Transmits single data through the USARTx peripheral. More...
 
void USART_SetAddress (USART_TypeDef *USARTx, uint8_t USART_Address)
 Sets the address of the USART node. More...
 
void USART_SetGuardTime (USART_TypeDef *USARTx, uint8_t USART_GuardTime)
 Sets the specified USART guard time. More...
 
void USART_SetPrescaler (USART_TypeDef *USARTx, uint8_t USART_Prescaler)
 Sets the system clock prescaler. 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_StructInit (USART_InitTypeDef *USART_InitStruct)
 Fills each USART_InitStruct member with its default value. More...
 
void USART_WakeUpConfig (USART_TypeDef *USARTx, uint16_t USART_WakeUp)
 Selects the USART WakeUp method. 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
V1.1.0
Date
11-January-2013
  • Initialization and Configuration
  • Data transfers
  • Multi-Processor Communication
  • LIN mode
  • Half-duplex mode
  • Smartcard mode
  • IrDA mode
  • DMA transfers management
  • Interrupts and flags management
===============================================================================
                       ##### How to use this driver #####
===============================================================================
   [..]
     (#) Enable peripheral clock using the following functions
         RCC_APB2PeriphClockCmd(RCC_APB2Periph_USARTx, ENABLE) for USART1 and USART6 
         RCC_APB1PeriphClockCmd(RCC_APB1Periph_USARTx, ENABLE) for USART2, USART3, 
         UART4 or UART5.
 
     (#) According to the USART mode, enable the GPIO clocks using 
         RCC_AHB1PeriphClockCmd() 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 USART_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
   
   [..]        
   In order to reach higher communication baudrates, it is possible to
   enable the oversampling by 8 mode using the function USART_OverSampling8Cmd().
   This function should be called after enabling the USART clock (RCC_APBxPeriphClockCmd())
   and before calling the function USART_Init().
Attention

© COPYRIGHT 2013 STMicroelectronics

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.

Definition in file stm32f4xx_usart.c.



rosflight_firmware
Author(s): Daniel Koch , James Jackson
autogenerated on Thu Oct 24 2019 03:17:21