1，开发环境
1，适用芯片：STM32F4全部芯片
2，固件库：STM32F4xx_DSP_StdPeriph_Lib_V1.8.0
3，IDE：MDK517
2，驱动源码
USART.h文件
/****************************************************************
* Copyright (C) 2016, XinLi, all right reserved.
* File name: USART.h
* Date: 2016.03.22
* Description: USART Driver
*****************************************************************/
#ifndef __USART_H
#define __USART_H
/****************************************************************
* Header include
*****************************************************************/
#include "stm32f4xx.h"
/****************************************************************
* Macro definition
*****************************************************************/
/********************* USART1 Configuration *********************/
#define RCC_AHB1Periph_USART1_Tx RCC_AHB1Periph_GPIOA
#define RCC_AHB1Periph_USART1_Rx RCC_AHB1Periph_GPIOA
#define GPIO_USART1_Tx GPIOA
#define GPIO_USART1_Rx GPIOA
#define GPIO_Pin_USART1_Tx GPIO_Pin_9
#define GPIO_Pin_USART1_Rx GPIO_Pin_10
#define GPIO_PinSource_USART1_Tx GPIO_PinSource9
#define GPIO_PinSource_USART1_Rx GPIO_PinSource10
/****************************************************************/
/********************* USART2 Configuration *********************/
#define RCC_AHB1Periph_USART2_Tx RCC_AHB1Periph_GPIOA
#define RCC_AHB1Periph_USART2_Rx RCC_AHB1Periph_GPIOA
#define GPIO_USART2_Tx GPIOA
#define GPIO_USART2_Rx GPIOA
#define GPIO_Pin_USART2_Tx GPIO_Pin_2
#define GPIO_Pin_USART2_Rx GPIO_Pin_3
#define GPIO_PinSource_USART2_Tx GPIO_PinSource2
#define GPIO_PinSource_USART2_Rx GPIO_PinSource3
/****************************************************************/
#if defined(STM32F40_41xxx) || defined(STM32F427_437xx) || defined(STM32F429_439xx) || defined(STM32F469_479xx) || defined(STM32F446xx) || defined(STM32F412xG) || defined(STM32F413_423xx)
/********************* USART3 Configuration *********************/
#define RCC_AHB1Periph_USART3_Tx RCC_AHB1Periph_GPIOB
#define RCC_AHB1Periph_USART3_Rx RCC_AHB1Periph_GPIOB
#define GPIO_USART3_Tx GPIOB
#define GPIO_USART3_Rx GPIOB
#define GPIO_Pin_USART3_Tx GPIO_Pin_10
#define GPIO_Pin_USART3_Rx GPIO_Pin_11
#define GPIO_PinSource_USART3_Tx GPIO_PinSource10
#define GPIO_PinSource_USART3_Rx GPIO_PinSource11
/****************************************************************/
#endif /* STM32F40_41xxx || STM32F427_437xx || STM32F429_439xx || STM32F469_479xx || STM32F446xx || STM32F412xG || STM32F413_423xx */
#if defined(STM32F40_41xxx) || defined(STM32F427_437xx) || defined(STM32F429_439xx) || defined(STM32F469_479xx) || defined(STM32F446xx) || defined(STM32F413_423xx)
/********************* USART4 Configuration *********************/
#define RCC_AHB1Periph_USART4_Tx RCC_AHB1Periph_GPIOC
#define RCC_AHB1Periph_USART4_Rx RCC_AHB1Periph_GPIOC
#define GPIO_USART4_Tx GPIOC
#define GPIO_USART4_Rx GPIOC
#define GPIO_Pin_USART4_Tx GPIO_Pin_10
#define GPIO_Pin_USART4_Rx GPIO_Pin_11
#define GPIO_PinSource_USART4_Tx GPIO_PinSource10
#define GPIO_PinSource_USART4_Rx GPIO_PinSource11
/****************************************************************/
/********************* USART5 Configuration *********************/
#define RCC_AHB1Periph_USART5_Tx RCC_AHB1Periph_GPIOC
#define RCC_AHB1Periph_USART5_Rx RCC_AHB1Periph_GPIOD
#define GPIO_USART5_Tx GPIOC
#define GPIO_USART5_Rx GPIOD
#define GPIO_Pin_USART5_Tx GPIO_Pin_12
#define GPIO_Pin_USART5_Rx GPIO_Pin_2
#define GPIO_PinSource_USART5_Tx GPIO_PinSource12
#define GPIO_PinSource_USART5_Rx GPIO_PinSource2
/****************************************************************/
#endif /* STM32F40_41xxx || STM32F427_437xx || STM32F429_439xx || STM32F469_479xx || STM32F446xx || STM32F413_423xx */
/********************* USART6 Configuration *********************/
#define RCC_AHB1Periph_USART6_Tx RCC_AHB1Periph_GPIOC
#define RCC_AHB1Periph_USART6_Rx RCC_AHB1Periph_GPIOC
#define GPIO_USART6_Tx GPIOC
#define GPIO_USART6_Rx GPIOC
#define GPIO_Pin_USART6_Tx GPIO_Pin_6
#define GPIO_Pin_USART6_Rx GPIO_Pin_7
#define GPIO_PinSource_USART6_Tx GPIO_PinSource6
#define GPIO_PinSource_USART6_Rx GPIO_PinSource7
/****************************************************************/
#if defined(STM32F427_437xx) || defined(STM32F429_439xx) || defined(STM32F469_479xx) || defined(STM32F413_423xx)
/********************* USART7 Configuration *********************/
#define RCC_AHB1Periph_USART7_Tx RCC_AHB1Periph_GPIOE
#define RCC_AHB1Periph_USART7_Rx RCC_AHB1Periph_GPIOE
#define GPIO_USART7_Tx GPIOE
#define GPIO_USART7_Rx GPIOE
#define GPIO_Pin_USART7_Tx GPIO_Pin_8
#define GPIO_Pin_USART7_Rx GPIO_Pin_7
#define GPIO_PinSource_USART7_Tx GPIO_PinSource8
#define GPIO_PinSource_USART7_Rx GPIO_PinSource7
/****************************************************************/
/********************* USART8 Configuration *********************/
#define RCC_AHB1Periph_USART8_Tx RCC_AHB1Periph_GPIOE
#define RCC_AHB1Periph_USART8_Rx RCC_AHB1Periph_GPIOE
#define GPIO_USART8_Tx GPIOE
#define GPIO_USART8_Rx GPIOE
#define GPIO_Pin_USART8_Tx GPIO_Pin_1
#define GPIO_Pin_USART8_Rx GPIO_Pin_0
#define GPIO_PinSource_USART8_Tx GPIO_PinSource1
#define GPIO_PinSource_USART8_Rx GPIO_PinSource0
/****************************************************************/
#endif /* STM32F427_437xx || STM32F429_439xx || STM32F469_479xx || STM32F413_423xx */
#if defined(STM32F413_423xx)
/********************* USART9 Configuration *********************/
#define RCC_AHB1Periph_USART9_Tx RCC_AHB1Periph_GPIOG
#define RCC_AHB1Periph_USART9_Rx RCC_AHB1Periph_GPIOG
#define GPIO_USART9_Tx GPIOG
#define GPIO_USART9_Rx GPIOG
#define GPIO_Pin_USART9_Tx GPIO_Pin_1
#define GPIO_Pin_USART9_Rx GPIO_Pin_0
#define GPIO_PinSource_USART9_Tx GPIO_PinSource1
#define GPIO_PinSource_USART9_Rx GPIO_PinSource0
/****************************************************************/
/******************** USART10 Configuration *********************/
#define RCC_AHB1Periph_USART10_Tx RCC_AHB1Periph_GPIOE
#define RCC_AHB1Periph_USART10_Rx RCC_AHB1Periph_GPIOE
#define GPIO_USART10_Tx GPIOE
#define GPIO_USART10_Rx GPIOE
#define GPIO_Pin_USART10_Tx GPIO_Pin_3
#define GPIO_Pin_USART10_Rx GPIO_Pin_2
#define GPIO_PinSource_USART10_Tx GPIO_PinSource3
#define GPIO_PinSource_USART10_Rx GPIO_PinSource2
/****************************************************************/
#endif /* STM32F413_423xx */
#define BAUD_RATE_2400 ((uint32_t)2400)
#define BAUD_RATE_4800 ((uint32_t)4800)
#define BAUD_RATE_9600 ((uint32_t)9600)
#define BAUD_RATE_19200 ((uint32_t)19200)
#define BAUD_RATE_38400 ((uint32_t)38400)
#define BAUD_RATE_57600 ((uint32_t)57600)
#define BAUD_RATE_115200 ((uint32_t)115200)
#define BAUD_RATE_230400 ((uint32_t)230400)
#define BAUD_RATE_460800 ((uint32_t)460800)
#define BAUD_RATE_921600 ((uint32_t)921600)
/****************************************************************
* Type definition
*****************************************************************/
/****************************************************************
* Structure definition
*****************************************************************/
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
/****************************************************************
* Variable declaration
*****************************************************************/
/****************************************************************
* Function declaration
*****************************************************************/
void USART_Configuration(USART_TypeDef* USARTx, uint32_t BaudRate, uint16_t USART_IT, uint16_t BufferSize_Tx, uint16_t BufferSize_Rx);
void USART_Unconfigure(USART_TypeDef* USARTx);
uint16_t USART_SetSendData(USART_TypeDef* USARTx, void* Buffer, uint16_t BufferSize);
uint16_t USART_GetReceiveData(USART_TypeDef* USARTx, void* Buffer, uint16_t BufferSize);
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* __USART_H */
USART.c文件
/****************************************************************
* Copyright (C) 2016, XinLi, all right reserved.
* File name: USART.c
* Date: 2016.03.22
* Description: USART Driver
*****************************************************************/
/****************************************************************
* Header include
*****************************************************************/
#include "USART.h"
#include
#include
/****************************************************************
* Global variables
*****************************************************************/
static uint16_t USART1_BufferSize_Tx = NULL;
static uint16_t USART1_BufferSize_Rx = NULL;
static uint8_t* USART1_Buffer_Tx = NULL;
static uint8_t* USART1_Buffer_Rx = NULL;
static uint16_t USART2_BufferSize_Tx = NULL;
static uint16_t USART2_BufferSize_Rx = NULL;
static uint8_t* USART2_Buffer_Tx = NULL;
static uint8_t* USART2_Buffer_Rx = NULL;
#if defined(STM32F40_41xxx) || defined(STM32F427_437xx) || defined(STM32F429_439xx) || defined(STM32F469_479xx) || defined(STM32F446xx) || defined(STM32F412xG) || defined(STM32F413_423xx)
static uint16_t USART3_BufferSize_Tx = NULL;
static uint16_t USART3_BufferSize_Rx = NULL;
static uint8_t* USART3_Buffer_Tx = NULL;
static uint8_t* USART3_Buffer_Rx = NULL;
#endif /* STM32F40_41xxx || STM32F427_437xx || STM32F429_439xx || STM32F469_479xx || STM32F446xx || STM32F412xG || STM32F413_423xx */
#if defined(STM32F40_41xxx) || defined(STM32F427_437xx) || defined(STM32F429_439xx) || defined(STM32F469_479xx) || defined(STM32F446xx) || defined(STM32F413_423xx)
static uint16_t USART4_BufferSize_Tx = NULL;
static uint16_t USART4_BufferSize_Rx = NULL;
static uint8_t* USART4_Buffer_Tx = NULL;
static uint8_t* USART4_Buffer_Rx = NULL;
static uint16_t USART5_BufferSize_Tx = NULL;
static uint16_t USART5_BufferSize_Rx= NULL;
static uint8_t* USART5_Buffer_Tx = NULL;
static uint8_t* USART5_Buffer_Rx = NULL;
#endif /* STM32F40_41xxx || STM32F427_437xx || STM32F429_439xx || STM32F469_479xx || STM32F446xx || STM32F413_423xx */
static uint16_t USART6_BufferSize_Tx = NULL;
static uint16_t USART6_BufferSize_Rx = NULL;
static uint8_t* USART6_Buffer_Tx = NULL;
static uint8_t* USART6_Buffer_Rx = NULL;
#if defined(STM32F427_437xx) || defined(STM32F429_439xx) || defined(STM32F469_479xx) || defined(STM32F413_423xx)
static uint16_t USART7_BufferSize_Tx = NULL;
static uint16_t USART7_BufferSize_Rx = NULL;
static uint8_t* USART7_Buffer_Tx = NULL;
static uint8_t* USART7_Buffer_Rx = NULL;
static uint16_t USART8_BufferSize_Tx = NULL;
static uint16_t USART8_BufferSize_Rx = NULL;
static uint8_t* USART8_Buffer_Tx = NULL;
static uint8_t* USART8_Buffer_Rx = NULL;
#endif /* STM32F427_437xx || STM32F429_439xx || STM32F469_479xx || STM32F413_423xx */
#if defined(STM32F413_423xx)
static uint16_t USART9_BufferSize_Tx = NULL;
static uint16_t USART9_BufferSize_Rx = NULL;
static uint8_t* USART9_Buffer_Tx = NULL;
static uint8_t* USART9_Buffer_Rx = NULL;
static uint16_t USART10_BufferSize_Tx = NULL;
static uint16_t USART10_BufferSize_Rx = NULL;
static uint8_t* USART10_Buffer_Tx = NULL;
static uint8_t* USART10_Buffer_Rx = NULL;
#endif /* STM32F413_423xx */
static uint16_t gpioFlag = NULL; /* Used to record the GPIO initialization flag. */
static uint16_t usartFlag = NULL; /* Used to record the USART initialization flag. */
static uint16_t dmaTxFlag = NULL; /* Used to record the DMA TX initialization flag. */
static uint16_t dmaRxFlag = NULL; /* Used to record the DMA RX initialization flag. */
static uint16_t firstFlag = NULL; /* Used to record the USART first send data flag. */
/****************************************************************
* Function declaration
*****************************************************************/
static void USART_DMA_TX_Configuration(USART_TypeDef* USARTx);
static void USART_DMA_RX_Configuration(USART_TypeDef* USARTx);
static void USART_DMA_TX_Unconfigure(USART_TypeDef* USARTx);
static void USART_DMA_RX_Unconfigure(USART_TypeDef* USARTx);
/****************************************************************
* Function definition
*****************************************************************/
/****************************************************************
* Function: USART_Configuration
* Description: USART Configuration.
* Input: USARTx
* BaudRate
* USART_IT
* BufferSize_Tx
* BufferSize_Rx
* Output:
* Return:
*****************************************************************/
void USART_Configuration(USART_TypeDef* USARTx, uint32_t BaudRate, uint16_t USART_IT, uint16_t BufferSize_Tx, uint16_t BufferSize_Rx)
{
uint16_t USART_Mode = NULL;
GPIO_InitTypeDef GPIO_InitStructure;
USART_InitTypeDef USART_InitStructure;
if( (BufferSize_Tx != NULL) && (BufferSize_Rx == NULL) )
{
USART_Mode = USART_Mode_Tx;
}
else if( (BufferSize_Tx == NULL) && (BufferSize_Rx != NULL) )
{
USART_Mode = USART_Mode_Rx;
}
else if( (BufferSize_Tx != NULL) && (BufferSize_Rx != NULL) )
{
USART_Mode = USART_Mode_Tx | USART_Mode_Rx;
}
else
{
USART_Unconfigure(USARTx); /* Unconfigure USARTx */
return;
}
if(USARTx == USART1)
{
firstFlag &= 0xFFFE;
if(USART1_Buffer_Tx != NULL)
{
free(USART1_Buffer_Tx); /* Release memory */
USART1_Buffer_Tx = NULL;
USART1_BufferSize_Tx = NULL;
}
if(USART1_Buffer_Rx != NULL)
{
free(USART1_Buffer_Rx); /* Release memory */
USART1_Buffer_Rx = NULL;
USART1_BufferSize_Rx = NULL;
}
USART1_BufferSize_Tx = BufferSize_Tx;
USART1_BufferSize_Rx = BufferSize_Rx;
if(USART1_BufferSize_Tx != NULL)
{
USART1_Buffer_Tx = malloc(USART1_BufferSize_Tx); /* Apply for memory */
memset(USART1_Buffer_Tx, NULL, USART1_BufferSize_Tx); /* Empty memory */
}
if(USART1_BufferSize_Rx != NULL)
{
USART1_Buffer_Rx = malloc(USART1_BufferSize_Rx); /* Apply for memory */
memset(USART1_Buffer_Rx, NULL, USART1_BufferSize_Rx); /* Empty memory */
}
if( (usartFlag & 0x0001) != 0x0001 )
{
usartFlag |= 0x0001;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1, ENABLE); /* Enable USART1 clock */
}
if( (gpioFlag & 0x0001) != 0x0001 )
{
gpioFlag |= 0x0001;
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_USART1_Tx, ENABLE); /* Enable USART1_Tx GPIO clock */
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_USART1_Rx, ENABLE); /* Enable USART1_Rx GPIO clock */
GPIO_PinAFConfig(GPIO_USART1_Tx, GPIO_PinSource_USART1_Tx, GPIO_AF_USART1); /* Connect GPIOxn to USART1_Tx */
GPIO_PinAFConfig(GPIO_USART1_Rx, GPIO_PinSource_USART1_Rx, GPIO_AF_USART1); /* Connect GPIOxn to USART1_Rx */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_USART1_Tx; /* Specifies the GPIO pins to be configured. */
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF; /* Specifies the operating mode for the selected pins. */
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz; /* Specifies the speed for the selected pins. */
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP; /* Specifies the operating output type for the selected pins. */
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP; /* Specifies the operating Pull-up/Pull down for the selected pins. */
GPIO_Init(GPIO_USART1_Tx, &GPIO_InitStructure); /* Initializes the GPIOx peripheral. */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_USART1_Rx; /* Specifies the GPIO pins to be configured. */
GPIO_Init(GPIO_USART1_Rx, &GPIO_InitStructure); /* Initializes the GPIOx peripheral. */
}
}
else if(USARTx == USART2)
{
firstFlag &= 0xFFFD;
if(USART2_Buffer_Tx != NULL)
{
free(USART2_Buffer_Tx); /* Release memory */
USART2_Buffer_Tx = NULL;
USART2_BufferSize_Tx = NULL;
}
if(USART2_Buffer_Rx != NULL)
{
free(USART2_Buffer_Rx); /* Release memory */
USART2_Buffer_Rx = NULL;
USART2_BufferSize_Rx = NULL;
}
USART2_BufferSize_Tx = BufferSize_Tx;
USART2_BufferSize_Rx = BufferSize_Rx;
if(USART2_BufferSize_Tx != NULL)
{
USART2_Buffer_Tx = malloc(USART2_BufferSize_Tx); /* Apply for memory */
memset(USART2_Buffer_Tx, NULL, USART2_BufferSize_Tx); /* Empty memory */
}
if(USART2_BufferSize_Rx != NULL)
{
USART2_Buffer_Rx = malloc(USART2_BufferSize_Rx); /* Apply for memory */
memset(USART2_Buffer_Rx, NULL, USART2_BufferSize_Rx); /* Empty memory */
}
if( (usartFlag & 0x0002) != 0x0002 )
{
usartFlag |= 0x0002;
RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART2, ENABLE); /* Enable USART2 clock */
}
if( (gpioFlag & 0x0002) != 0x0002 )
{
gpioFlag |= 0x0002;
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_USART2_Tx, ENABLE); /* Enable USART2_Tx GPIO clock */
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_USART2_Rx, ENABLE); /* Enable USART2_Rx GPIO clock */
GPIO_PinAFConfig(GPIO_USART2_Tx, GPIO_PinSource_USART2_Tx, GPIO_AF_USART2); /* Connect GPIOxn to USART2_Tx */
GPIO_PinAFConfig(GPIO_USART2_Rx, GPIO_PinSource_USART2_Rx, GPIO_AF_USART2); /* Connect GPIOxn to USART2_Rx */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_USART2_Tx; /* Specifies the GPIO pins to be configured. */
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF; /* Specifies the operating mode for the selected pins. */
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz; /* Specifies the speed for the selected pins. */
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP; /* Specifies the operating output type for the selected pins. */
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP; /* Specifies the operating Pull-up/Pull down for the selected pins. */
GPIO_Init(GPIO_USART2_Tx, &GPIO_InitStructure); /* Initializes the GPIOx peripheral. */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_USART2_Rx; /* Specifies the GPIO pins to be configured. */
GPIO_Init(GPIO_USART2_Rx, &GPIO_InitStructure); /* Initializes the GPIOx peripheral. */
}
}
#if defined(STM32F40_41xxx) || defined(STM32F427_437xx) || defined(STM32F429_439xx) || defined(STM32F469_479xx) || defined(STM32F446xx) || defined(STM32F412xG) || defined(STM32F413_423xx)
else if(USARTx == USART3)
{
firstFlag &= 0xFFFB;
if(USART3_Buffer_Tx != NULL)
{
free(USART3_Buffer_Tx); /* Release memory */
USART3_Buffer_Tx = NULL;
USART3_BufferSize_Tx = NULL;
}
if(USART3_Buffer_Rx != NULL)
{
free(USART3_Buffer_Rx); /* Release memory */
USART3_Buffer_Rx = NULL;
USART3_BufferSize_Rx = NULL;
}
USART3_BufferSize_Tx = BufferSize_Tx;
USART3_BufferSize_Rx = BufferSize_Rx;
if(USART3_BufferSize_Tx != NULL)
{
USART3_Buffer_Tx = malloc(USART3_BufferSize_Tx); /* Apply for memory */
memset(USART3_Buffer_Tx, NULL, USART3_BufferSize_Tx); /* Empty memory */
}
if(USART3_BufferSize_Rx != NULL)
{
USART3_Buffer_Rx = malloc(USART3_BufferSize_Rx); /* Apply for memory */
memset(USART3_Buffer_Rx, NULL, USART3_BufferSize_Rx); /* Empty memory */
}
if( (usartFlag & 0x0004) != 0x0004 )
{
usartFlag |= 0x0004;
RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART3, ENABLE); /* Enable USART3 clock */
}
if( (gpioFlag & 0x0004) != 0x0004 )
{
gpioFlag |= 0x0004;
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_USART3_Tx, ENABLE); /* Enable USART3_Tx GPIO clock */
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_USART3_Rx, ENABLE); /* Enable USART3_Rx GPIO clock */
GPIO_PinAFConfig(GPIO_USART3_Tx, GPIO_PinSource_USART3_Tx, GPIO_AF_USART3); /* Connect GPIOxn to USART3_Tx */
GPIO_PinAFConfig(GPIO_USART3_Rx, GPIO_PinSource_USART3_Rx, GPIO_AF_USART3); /* Connect GPIOxn to USART3_Rx */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_USART3_Tx; /* Specifies the GPIO pins to be configured. */
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF; /* Specifies the operating mode for the selected pins. */
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz; /* Specifies the speed for the selected pins. */
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP; /* Specifies the operating output type for the selected pins. */
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP; /* Specifies the operating Pull-up/Pull down for the selected pins. */
GPIO_Init(GPIO_USART3_Tx, &GPIO_InitStructure); /* Initializes the GPIOx peripheral. */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_USART3_Rx; /* Specifies the GPIO pins to be configured. */
GPIO_Init(GPIO_USART3_Rx, &GPIO_InitStructure); /* Initializes the GPIOx peripheral. */
}
}
#endif /* STM32F40_41xxx || STM32F427_437xx || STM32F429_439xx || STM32F469_479xx || STM32F446xx || STM32F412xG || STM32F413_423xx */
#if defined(STM32F40_41xxx) || defined(STM32F427_437xx) || defined(STM32F429_439xx) || defined(STM32F469_479xx) || defined(STM32F446xx) || defined(STM32F413_423xx)
else if(USARTx == UART4)
{
firstFlag &= 0xFFF7;
if(USART4_Buffer_Tx != NULL)
{
free(USART4_Buffer_Tx); /* Release memory */
USART4_Buffer_Tx = NULL;
USART4_BufferSize_Tx = NULL;
}
if(USART4_Buffer_Rx != NULL)
{
free(USART4_Buffer_Rx); /* Release memory */
USART4_Buffer_Rx = NULL;
USART4_BufferSize_Rx = NULL;
}
USART4_BufferSize_Tx = BufferSize_Tx;
USART4_BufferSize_Rx = BufferSize_Rx;
if(USART4_BufferSize_Tx != NULL)
{
USART4_Buffer_Tx = malloc(USART4_BufferSize_Tx); /* Apply for memory */
memset(USART4_Buffer_Tx, NULL, USART4_BufferSize_Tx); /* Empty memory */
}
if(USART4_BufferSize_Rx != NULL)
{
USART4_Buffer_Rx = malloc(USART4_BufferSize_Rx); /* Apply for memory */
memset(USART4_Buffer_Rx, NULL, USART4_BufferSize_Rx); /* Empty memory */
}
if( (usartFlag & 0x0008) != 0x0008 )
{
usartFlag |= 0x0008;
RCC_APB1PeriphClockCmd(RCC_APB1Periph_UART4, ENABLE); /* Enable USART4 clock */
}
if( (gpioFlag & 0x0008) != 0x0008 )
{
gpioFlag |= 0x0008;
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_USART4_Tx, ENABLE); /* Enable USART4_Tx GPIO clock */
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_USART4_Rx, ENABLE); /* Enable USART4_Rx GPIO clock */
GPIO_PinAFConfig(GPIO_USART4_Tx, GPIO_PinSource_USART4_Tx, GPIO_AF_UART4); /* Connect GPIOxn to USART4_Tx */
GPIO_PinAFConfig(GPIO_USART4_Rx, GPIO_PinSource_USART4_Rx, GPIO_AF_UART4); /* Connect GPIOxn to USART4_Rx */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_USART4_Tx; /* Specifies the GPIO pins to be configured. */
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF; /* Specifies the operating mode for the selected pins. */
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz; /* Specifies the speed for the selected pins. */
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP; /* Specifies the operating output type for the selected pins. */
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP; /* Specifies the operating Pull-up/Pull down for the selected pins. */
GPIO_Init(GPIO_USART4_Tx, &GPIO_InitStructure); /* Initializes the GPIOx peripheral. */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_USART4_Rx; /* Specifies the GPIO pins to be configured. */
GPIO_Init(GPIO_USART4_Rx, &GPIO_InitStructure); /* Initializes the GPIOx peripheral. */
}
}
else if(USARTx == UART5)
{
firstFlag &= 0xFFEF;
if(USART5_Buffer_Tx != NULL)
{
free(USART5_Buffer_Tx); /* Release memory */
USART5_Buffer_Tx = NULL;
USART5_BufferSize_Tx = NULL;
}
if(USART5_Buffer_Rx != NULL)
{
free(USART5_Buffer_Rx); /* Release memory */
USART5_Buffer_Rx = NULL;
USART5_BufferSize_Rx = NULL;
}
USART5_BufferSize_Tx = BufferSize_Tx;
USART5_BufferSize_Rx = BufferSize_Rx;
if(USART5_BufferSize_Tx != NULL)
{
USART5_Buffer_Tx = malloc(USART5_BufferSize_Tx); /* Apply for memory */
memset(USART5_Buffer_Tx, NULL, USART5_BufferSize_Tx); /* Empty memory */
}
if(USART5_BufferSize_Rx != NULL)
{
USART5_Buffer_Rx = malloc(USART5_BufferSize_Rx); /* Apply for memory */
memset(USART5_Buffer_Rx, NULL, USART5_BufferSize_Rx); /* Empty memory */
}
if( (usartFlag & 0x0010) != 0x0010 )
{
usartFlag |= 0x0010;
RCC_APB1PeriphClockCmd(RCC_APB1Periph_UART5, ENABLE); /* Enable USART5 clock */
}
if( (gpioFlag & 0x0010) != 0x0010 )
{
gpioFlag |= 0x0010;
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_USART5_Tx, ENABLE); /* Enable USART5_Tx GPIO clock */
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_USART5_Rx, ENABLE); /* Enable USART5_Rx GPIO clock */
GPIO_PinAFConfig(GPIO_USART5_Tx, GPIO_PinSource_USART5_Tx, GPIO_AF_UART5); /* Connect GPIOxn to USART5_Tx */
GPIO_PinAFConfig(GPIO_USART5_Rx, GPIO_PinSource_USART5_Rx, GPIO_AF_UART5); /* Connect GPIOxn to USART5_Rx */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_USART5_Tx; /* Specifies the GPIO pins to be configured. */
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF; /* Specifies the operating mode for the selected pins. */
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz; /* Specifies the speed for the selected pins. */
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP; /* Specifies the operating output type for the selected pins. */
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP; /* Specifies the operating Pull-up/Pull down for the selected pins. */
GPIO_Init(GPIO_USART5_Tx, &GPIO_InitStructure); /* Initializes the GPIOx peripheral. */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_USART5_Rx; /* Specifies the GPIO pins to be configured. */
GPIO_Init(GPIO_USART5_Rx, &GPIO_InitStructure); /* Initializes the GPIOx peripheral. */
}
}
#endif /* STM32F40_41xxx || STM32F427_437xx || STM32F429_439xx || STM32F469_479xx || STM32F446xx || STM32F413_423xx */
else if(USARTx == USART6)
{
firstFlag &= 0xFFDF;
if(USART6_Buffer_Tx != NULL)
{
free(USART6_Buffer_Tx); /* Release memory */
USART6_Buffer_Tx = NULL;
USART6_BufferSize_Tx = NULL;
}
if(USART6_Buffer_Rx != NULL)
{
free(USART6_Buffer_Rx); /* Release memory */
USART6_Buffer_Rx = NULL;
USART6_BufferSize_Rx = NULL;
}
USART6_BufferSize_Tx = BufferSize_Tx;
USART6_BufferSize_Rx = BufferSize_Rx;
if(USART6_BufferSize_Tx != NULL)
{
USART6_Buffer_Tx = malloc(USART6_BufferSize_Tx); /* Apply for memory */
memset(USART6_Buffer_Tx, NULL, USART6_BufferSize_Tx); /* Empty memory */
}
if(USART6_BufferSize_Rx != NULL)
{
USART6_Buffer_Rx = malloc(USART6_BufferSize_Rx); /* Apply for memory */
memset(USART6_Buffer_Rx, NULL, USART6_BufferSize_Rx); /* Empty memory */
}
if( (usartFlag & 0x0020) != 0x0020 )
{
usartFlag |= 0x0020;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART6, ENABLE); /* Enable USART6 clock */
}
if( (gpioFlag & 0x0020) != 0x0020 )
{
gpioFlag |= 0x0020;
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_USART6_Tx, ENABLE); /* Enable USART6_Tx GPIO clock */
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_USART6_Rx, ENABLE); /* Enable USART6_Rx GPIO clock */
GPIO_PinAFConfig(GPIO_USART6_Tx, GPIO_PinSource_USART6_Tx, GPIO_AF_USART6); /* Connect GPIOxn to USART6_Tx */
GPIO_PinAFConfig(GPIO_USART6_Rx, GPIO_PinSource_USART6_Rx, GPIO_AF_USART6); /* Connect GPIOxn to USART6_Rx */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_USART6_Tx; /* Specifies the GPIO pins to be configured. */
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF; /* Specifies the operating mode for the selected pins. */
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz; /* Specifies the speed for the selected pins. */
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP; /* Specifies the operating output type for the selected pins. */
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP; /* Specifies the operating Pull-up/Pull down for the selected pins. */
GPIO_Init(GPIO_USART6_Tx, &GPIO_InitStructure); /* Initializes the GPIOx peripheral. */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_USART6_Rx; /* Specifies the GPIO pins to be configured. */
GPIO_Init(GPIO_USART6_Rx, &GPIO_InitStructure); /* Initializes the GPIOx peripheral. */
}
}
#if defined(STM32F427_437xx) || defined(STM32F429_439xx) || defined(STM32F469_479xx) || defined(STM32F413_423xx)
else if(USARTx == UART7)
{
firstFlag &= 0xFFBF;
if(USART7_Buffer_Tx != NULL)
{
free(USART7_Buffer_Tx); /* Release memory */
USART7_Buffer_Tx = NULL;
USART7_BufferSize_Tx = NULL;
}
if(USART7_Buffer_Rx != NULL)
{
free(USART7_Buffer_Rx); /* Release memory */
USART7_Buffer_Rx = NULL;
USART7_BufferSize_Rx = NULL;
}
USART7_BufferSize_Tx = BufferSize_Tx;
USART7_BufferSize_Rx = BufferSize_Rx;
if(USART7_BufferSize_Tx != NULL)
{
USART7_Buffer_Tx = malloc(USART7_BufferSize_Tx); /* Apply for memory */
memset(USART7_Buffer_Tx, NULL, USART7_BufferSize_Tx); /* Empty memory */
}
if(USART7_BufferSize_Rx != NULL)
{
USART7_Buffer_Rx = malloc(USART7_BufferSize_Rx); /* Apply for memory */
memset(USART7_Buffer_Rx, NULL, USART7_BufferSize_Rx); /* Empty memory */
}
if( (usartFlag & 0x0040) != 0x0040 )
{
usartFlag |= 0x0040;
RCC_APB1PeriphClockCmd(RCC_APB1Periph_UART7, ENABLE); /* Enable USART7 clock */
}
if( (gpioFlag & 0x0040) != 0x0040 )
{
gpioFlag |= 0x0040;
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_USART7_Tx, ENABLE); /* Enable USART7_Tx GPIO clock */
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_USART7_Rx, ENABLE); /* Enable USART7_Rx GPIO clock */
GPIO_PinAFConfig(GPIO_USART7_Tx, GPIO_PinSource_USART7_Tx, GPIO_AF_UART7); /* Connect GPIOxn to USART7_Tx */
GPIO_PinAFConfig(GPIO_USART7_Rx, GPIO_PinSource_USART7_Rx, GPIO_AF_UART7); /* Connect GPIOxn to USART7_Rx */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_USART7_Tx; /* Specifies the GPIO pins to be configured. */
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF; /* Specifies the operating mode for the selected pins. */
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz; /* Specifies the speed for the selected pins. */
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP; /* Specifies the operating output type for the selected pins. */
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP; /* Specifies the operating Pull-up/Pull down for the selected pins. */
GPIO_Init(GPIO_USART7_Tx, &GPIO_InitStructure); /* Initializes the GPIOx peripheral. */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_USART7_Rx; /* Specifies the GPIO pins to be configured. */
GPIO_Init(GPIO_USART7_Rx, &GPIO_InitStructure); /* Initializes the GPIOx peripheral. */
}
}
else if(USARTx == UART8)
{
firstFlag &= 0xFF7F;
if(USART8_Buffer_Tx != NULL)
{
free(USART8_Buffer_Tx); /* Release memory */
USART8_Buffer_Tx = NULL;
USART8_BufferSize_Tx = NULL;
}
if(USART8_Buffer_Rx != NULL)
{
free(USART8_Buffer_Rx); /* Release memory */
USART8_Buffer_Rx = NULL;
USART8_BufferSize_Rx = NULL;
}
USART8_BufferSize_Tx = BufferSize_Tx;
USART8_BufferSize_Rx = BufferSize_Rx;
if(USART8_BufferSize_Tx != NULL)
{
USART8_Buffer_Tx = malloc(USART8_BufferSize_Tx); /* Apply for memory */
memset(USART8_Buffer_Tx, NULL, USART8_BufferSize_Tx); /* Empty memory */
}
if(USART8_BufferSize_Rx != NULL)
{
USART8_Buffer_Rx = malloc(USART8_BufferSize_Rx); /* Apply for memory */
memset(USART8_Buffer_Rx, NULL, USART8_BufferSize_Rx); /* Empty memory */
}
if( (usartFlag & 0x0080) != 0x0080 )
{
usartFlag |= 0x0080;
RCC_APB1PeriphClockCmd(RCC_APB1Periph_UART8, ENABLE); /* Enable USART8 clock */
}
if( (gpioFlag & 0x0080) != 0x0080 )
{
gpioFlag |= 0x0080;
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_USART8_Tx, ENABLE); /* Enable USART8_Tx GPIO clock */
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_USART8_Rx, ENABLE); /* Enable USART8_Rx GPIO clock */
GPIO_PinAFConfig(GPIO_USART8_Tx, GPIO_PinSource_USART8_Tx, GPIO_AF_UART8); /* Connect GPIOxn to USART8_Tx */
GPIO_PinAFConfig(GPIO_USART8_Rx, GPIO_PinSource_USART8_Rx, GPIO_AF_UART8); /* Connect GPIOxn to USART8_Rx */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_USART8_Tx; /* Specifies the GPIO pins to be configured. */
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF; /* Specifies the operating mode for the selected pins. */
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz; /* Specifies the speed for the selected pins. */
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP; /* Specifies the operating output type for the selected pins. */
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP; /* Specifies the operating Pull-up/Pull down for the selected pins. */
GPIO_Init(GPIO_USART8_Tx, &GPIO_InitStructure); /* Initializes the GPIOx peripheral. */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_USART8_Rx; /* Specifies the GPIO pins to be configured. */
GPIO_Init(GPIO_USART8_Rx, &GPIO_InitStructure); /* Initializes the GPIOx peripheral. */
}
}
#endif /* STM32F427_437xx || STM32F429_439xx || STM32F469_479xx || STM32F413_423xx */
#if defined(STM32F413_423xx)
else if(USARTx == UART9)
{
firstFlag &= 0xFEFF;
if(USART9_Buffer_Tx != NULL)
{
free(USART9_Buffer_Tx); /* Release memory */
USART9_Buffer_Tx = NULL;
USART9_BufferSize_Tx = NULL;
}
if(USART9_Buffer_Rx != NULL)
{
free(USART9_Buffer_Rx); /* Release memory */
USART9_Buffer_Rx = NULL;
USART9_BufferSize_Rx = NULL;
}
USART9_BufferSize_Tx = BufferSize_Tx;
USART9_BufferSize_Rx = BufferSize_Rx;
if(USART9_BufferSize_Tx != NULL)
{
USART9_Buffer_Tx = malloc(USART9_BufferSize_Tx); /* Apply for memory */
memset(USART9_Buffer_Tx, NULL, USART9_BufferSize_Tx); /* Empty memory */
}
if(USART9_BufferSize_Rx != NULL)
{
USART9_Buffer_Rx = malloc(USART9_BufferSize_Rx); /* Apply for memory */
memset(USART9_Buffer_Rx, NULL, USART9_BufferSize_Rx); /* Empty memory */
}
if( (usartFlag & 0x0100) != 0x0100 )
{
usartFlag |= 0x0100;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_UART9, ENABLE); /* Enable USART9 clock */
}
if( (gpioFlag & 0x0100) != 0x0100 )
{
gpioFlag |= 0x0100;
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_USART9_Tx, ENABLE); /* Enable USART9_Tx GPIO clock */
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_USART9_Rx, ENABLE); /* Enable USART9_Rx GPIO clock */
GPIO_PinAFConfig(GPIO_USART9_Tx, GPIO_PinSource_USART9_Tx, GPIO_AF11_UART9); /* Connect GPIOxn to USART9_Tx */
GPIO_PinAFConfig(GPIO_USART9_Rx, GPIO_PinSource_USART9_Rx, GPIO_AF11_UART9); /* Connect GPIOxn to USART9_Rx */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_USART9_Tx; /* Specifies the GPIO pins to be configured. */
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF; /* Specifies the operating mode for the selected pins. */
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz; /* Specifies the speed for the selected pins. */
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP; /* Specifies the operating output type for the selected pins. */
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP; /* Specifies the operating Pull-up/Pull down for the selected pins. */
GPIO_Init(GPIO_USART9_Tx, &GPIO_InitStructure); /* Initializes the GPIOx peripheral. */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_USART9_Rx; /* Specifies the GPIO pins to be configured. */
GPIO_Init(GPIO_USART9_Rx, &GPIO_InitStructure); /* Initializes the GPIOx peripheral. */
}
}
else if(USARTx == UART10)
{
firstFlag &= 0xFDFF;
if(USART10_Buffer_Tx != NULL)
{
free(USART10_Buffer_Tx); /* Release memory */
USART10_Buffer_Tx = NULL;
USART10_BufferSize_Tx = NULL;
}
if(USART10_Buffer_Rx != NULL)
{
free(USART10_Buffer_Rx); /* Release memory */
USART10_Buffer_Rx = NULL;
USART10_BufferSize_Rx = NULL;
}
USART10_BufferSize_Tx = BufferSize_Tx;
USART10_BufferSize_Rx = BufferSize_Rx;
if(USART10_BufferSize_Tx != NULL)
{
USART10_Buffer_Tx = malloc(USART10_BufferSize_Tx); /* Apply for memory */
memset(USART10_Buffer_Tx, NULL, USART10_BufferSize_Tx); /* Empty memory */
}
if(USART10_BufferSize_Rx != NULL)
{
USART10_Buffer_Rx = malloc(USART10_BufferSize_Rx); /* Apply for memory */
memset(USART10_Buffer_Rx, NULL, USART10_BufferSize_Rx); /* Empty memory */
}
if( (usartFlag & 0x0200) != 0x0200 )
{
usartFlag |= 0x0200;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_UART10, ENABLE); /* Enable USART10 clock */
}
if( (gpioFlag & 0x0200) != 0x0200 )
{
gpioFlag |= 0x0200;
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_USART10_Tx, ENABLE); /* Enable USART10_Tx GPIO clock */
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_USART10_Rx, ENABLE); /* Enable USART10_Rx GPIO clock */
GPIO_PinAFConfig(GPIO_USART10_Tx, GPIO_PinSource_USART10_Tx, GPIO_AF11_UART10); /* Connect GPIOxn to USART10_Tx */
GPIO_PinAFConfig(GPIO_USART10_Rx, GPIO_PinSource_USART10_Rx, GPIO_AF11_UART10); /* Connect GPIOxn to USART10_Rx */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_USART10_Tx; /* Specifies the GPIO pins to be configured. */
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF; /* Specifies the operating mode for the selected pins. */
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz; /* Specifies the speed for the selected pins. */
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP; /* Specifies the operating output type for the selected pins. */
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP; /* Specifies the operating Pull-up/Pull down for the selected pins. */
GPIO_Init(GPIO_USART10_Tx, &GPIO_InitStructure); /* Initializes the GPIOx peripheral. */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_USART10_Rx; /* Specifies the GPIO pins to be configured. */
GPIO_Init(GPIO_USART10_Rx, &GPIO_InitStructure); /* Initializes the GPIOx peripheral. */
}
}
#endif /* STM32F413_423xx */
USART_DeInit(USARTx); /* Deinitializes the USARTx peripheral registers to their default reset values. */
USART_InitStructure.USART_BaudRate = BaudRate; /* This member configures the USART communication baud rate. */
USART_InitStructure.USART_WordLength = USART_WordLength_8b; /* Specifies the number of data bits transmitted or received in a frame. */
USART_InitStructure.USART_StopBits = USART_StopBits_1; /* Specifies the number of stop bits transmitted. */
USART_InitStructure.USART_Parity = USART_Parity_No; /* Specifies the parity mode. */
USART_InitStructure.USART_Mode = USART_Mode; /* Specifies whether the Receive or Transmit mode is enabled or disabled. */
USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None; /* Specifies wether the hardware flow control mode is enabled or disabled. */
USART_Init(USARTx, &USART_InitStructure); /* Initializes the USARTx peripheral. */
if( (USART_Mode & USART_Mode_Tx) == USART_Mode_Tx )
{
USART_DMACmd(USARTx, USART_DMAReq_Tx, ENABLE); /* Enabling the DMA request specified USARTx */
}
if( (USART_Mode & USART_Mode_Rx) == USART_Mode_Rx )
{
USART_DMACmd(USARTx, USART_DMAReq_Rx, ENABLE); /* Enabling the DMA request specified USARTx */
}
if( (USART_IT & USART_IT_PE) == USART_IT_PE )
{
USART_ITConfig(USARTx, USART_IT_PE, ENABLE); /* Enabling interrupts specified USARTx */
}
if( (USART_IT & USART_IT_TXE) == USART_IT_TXE )
{
USART_ITConfig(USARTx, USART_IT_TXE, ENABLE); /* Enabling interrupts specified USARTx */
}
if( (USART_IT & USART_IT_TC) == USART_IT_TC )
{
USART_ITConfig(USARTx, USART_IT_TC, ENABLE); /* Enabling interrupts specified USARTx */
}
if( (USART_IT & USART_IT_RXNE) == USART_IT_RXNE )
{
USART_ITConfig(USARTx, USART_IT_RXNE, ENABLE); /* Enabling interrupts specified USARTx */
}
if( (USART_IT & USART_IT_ORE_RX) == USART_IT_ORE_RX )
{
USART_ITConfig(USARTx, USART_IT_ORE_RX, ENABLE); /* Enabling interrupts specified USARTx */
}
if( (USART_IT & USART_IT_IDLE) == USART_IT_IDLE )
{
USART_ITConfig(USARTx, USART_IT_IDLE, ENABLE); /* Enabling interrupts specified USARTx */
}
if( (USART_IT & USART_IT_LBD) == USART_IT_LBD )
{
USART_ITConfig(USARTx, USART_IT_LBD, ENABLE); /* Enabling interrupts specified USARTx */
}
if( (USART_IT & USART_IT_CTS) == USART_IT_CTS )
{
USART_ITConfig(USARTx, USART_IT_CTS, ENABLE); /* Enabling interrupts specified USARTx */
}
if( (USART_IT & USART_IT_ERR) == USART_IT_ERR )
{
USART_ITConfig(USARTx, USART_IT_ERR, ENABLE); /* Enabling interrupts specified USARTx */
}
if( (USART_IT & USART_IT_ORE_ER) == USART_IT_ORE_ER )
{
USART_ITConfig(USARTx, USART_IT_ORE_ER, ENABLE); /* Enabling interrupts specified USARTx */
}
if( (USART_IT & USART_IT_NE) == USART_IT_NE )
{
USART_ITConfig(USARTx, USART_IT_NE, ENABLE); /* Enabling interrupts specified USARTx */
}
if( (USART_IT & USART_IT_FE) == USART_IT_FE )
{
USART_ITConfig(USARTx, USART_IT_FE, ENABLE); /* Enabling interrupts specified USARTx */
}
USART_Cmd(USARTx, ENABLE); /* Enables or disables the specified USARTx peripheral. */
if( USART_Mode == USART_Mode_Tx )
{
USART_DMA_TX_Configuration(USARTx); /* Configuration USARTx DMA TX */
USART_DMA_RX_Unconfigure(USARTx); /* Unconfigure USARTx DMA RX */
}
else if( USART_Mode == USART_Mode_Rx )
{
USART_DMA_RX_Configuration(USARTx); /* Configuration USARTx DMA RX */
USART_DMA_TX_Unconfigure(USARTx); /* Unconfigure USARTx DMA TX */
}
else
{
USART_DMA_TX_Configuration(USARTx); /* Configuration USARTx DMA TX */
USART_DMA_RX_Configuration(USARTx); /* Configuration USARTx DMA RX */
}
}
/****************************************************************
* Function: USART_Unconfigure
* Description: USART Unconfigure.
* Input: USARTx
* Output:
* Return:
*****************************************************************/
void USART_Unconfigure(USART_TypeDef* USARTx)
{
if(USARTx == USART1)
{
firstFlag &= 0xFFFE;
if(USART1_Buffer_Tx != NULL)
{
free(USART1_Buffer_Tx); /* Release memory */
USART1_Buffer_Tx = NULL;
USART1_BufferSize_Tx = NULL;
}
if(USART1_Buffer_Rx != NULL)
{
free(USART1_Buffer_Rx); /* Release memory */
USART1_Buffer_Rx = NULL;
USART1_BufferSize_Rx = NULL;
}
if( (usartFlag & 0x0001) == 0x0001 )
{
usartFlag &= 0xFFFE;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1, DISABLE); /* Disable USART1 clock */
USART_DeInit(USART1); /* Deinitializes the USART1 peripheral registers to their default reset values. */
USART_DMA_TX_Unconfigure(USART1); /* Unconfigure USART1 DMA TX */
USART_DMA_RX_Unconfigure(USART1); /* Unconfigure USART1 DMA RX */
}
}
else if(USARTx == USART2)
{
firstFlag &= 0xFFFD;
if(USART2_Buffer_Tx != NULL)
{
free(USART2_Buffer_Tx); /* Release memory */
USART2_Buffer_Tx = NULL;
USART2_BufferSize_Tx = NULL;
}
if(USART2_Buffer_Rx != NULL)
{
free(USART2_Buffer_Rx); /* Release memory */
USART2_Buffer_Rx = NULL;
USART2_BufferSize_Rx = NULL;
}
if( (usartFlag & 0x0002) == 0x0002 )
{
usartFlag &= 0xFFFD;
RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART2, DISABLE); /* Disable USART2 clock */
USART_DeInit(USART2); /* Deinitializes the USART2 peripheral registers to their default reset values. */
USART_DMA_TX_Unconfigure(USART2); /* Unconfigure USART2 DMA TX */
USART_DMA_RX_Unconfigure(USART2); /* Unconfigure USART2 DMA RX */
}
}
#if defined(STM32F40_41xxx) || defined(STM32F427_437xx) || defined(STM32F429_439xx) || defined(STM32F469_479xx) || defined(STM32F446xx) || defined(STM32F412xG) || defined(STM32F413_423xx)
else if(USARTx == USART3)
{
firstFlag &= 0xFFFB;
if(USART3_Buffer_Tx != NULL)
{
free(USART3_Buffer_Tx); /* Release memory */
USART3_Buffer_Tx = NULL;
USART3_BufferSize_Tx = NULL;
}
if(USART3_Buffer_Rx != NULL)
{
free(USART3_Buffer_Rx); /* Release memory */
USART3_Buffer_Rx = NULL;
USART3_BufferSize_Rx = NULL;
}
if( (usartFlag & 0x0004) == 0x0004 )
{
usartFlag &= 0xFFFB;
RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART3, DISABLE); /* Disable USART3 clock */
USART_DeInit(USART3); /* Deinitializes the USART3 peripheral registers to their default reset values. */
USART_DMA_TX_Unconfigure(USART3); /* Unconfigure USART3 DMA TX */
USART_DMA_RX_Unconfigure(USART3); /* Unconfigure USART3 DMA RX */
}
}
#endif /* STM32F40_41xxx || STM32F427_437xx || STM32F429_439xx || STM32F469_479xx || STM32F446xx || STM32F412xG || STM32F413_423xx */
#if defined(STM32F40_41xxx) || defined(STM32F427_437xx) || defined(STM32F429_439xx) || defined(STM32F469_479xx) || defined(STM32F446xx) || defined(STM32F413_423xx)
else if(USARTx == UART4)
{
firstFlag &= 0xFFF7;
if(USART4_Buffer_Tx != NULL)
{
free(USART4_Buffer_Tx); /* Release memory */
USART4_Buffer_Tx = NULL;
USART4_BufferSize_Tx = NULL;
}
if(USART4_Buffer_Rx != NULL)
{
free(USART4_Buffer_Rx); /* Release memory */
USART4_Buffer_Rx = NULL;
USART4_BufferSize_Rx = NULL;
}
if( (usartFlag & 0x0008) == 0x0008 )
{
usartFlag &= 0xFFF7;
RCC_APB1PeriphClockCmd(RCC_APB1Periph_UART4, DISABLE); /* Disable USART4 clock */
USART_DeInit(UART4); /* Deinitializes the USART4 peripheral registers to their default reset values. */
USART_DMA_TX_Unconfigure(UART4); /* Unconfigure USART4 DMA TX */
USART_DMA_RX_Unconfigure(UART4); /* Unconfigure USART4 DMA RX */
}
}
else if(USARTx == UART5)
{
firstFlag &= 0xFFEF;
if(USART5_Buffer_Tx != NULL)
{
free(USART5_Buffer_Tx); /* Release memory */
USART5_Buffer_Tx = NULL;
USART5_BufferSize_Tx = NULL;
}
if(USART5_Buffer_Rx != NULL)
{
free(USART5_Buffer_Rx); /* Release memory */
USART5_Buffer_Rx = NULL;
USART5_BufferSize_Rx = NULL;
}
if( (usartFlag & 0x0010) == 0x0010 )
{
usartFlag &= 0xFFEF;
RCC_APB1PeriphClockCmd(RCC_APB1Periph_UART5, DISABLE); /* Disable USART5 clock */
USART_DeInit(UART5); /* Deinitializes the USART5 peripheral registers to their default reset values. */
USART_DMA_TX_Unconfigure(UART5); /* Unconfigure USART5 DMA TX */
USART_DMA_RX_Unconfigure(UART5); /* Unconfigure USART5 DMA RX */
}
}
#endif /* STM32F40_41xxx || STM32F427_437xx || STM32F429_439xx || STM32F469_479xx || STM32F446xx || STM32F413_423xx */
else if(USARTx == USART6)
{
firstFlag &= 0xFFDF;
if(USART6_Buffer_Tx != NULL)
{
free(USART6_Buffer_Tx); /* Release memory */
USART6_Buffer_Tx = NULL;
USART6_BufferSize_Tx = NULL;
}
if(USART6_Buffer_Rx != NULL)
{
free(USART6_Buffer_Rx); /* Release memory */
USART6_Buffer_Rx = NULL;
USART6_BufferSize_Rx = NULL;
}
if( (usartFlag & 0x0020) == 0x0020 )
{
usartFlag &= 0xFFDF;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART6, DISABLE); /* Disable USART6 clock */
USART_DeInit(USART6); /* Deinitializes the USART6 peripheral registers to their default reset values. */
USART_DMA_TX_Unconfigure(USART6); /* Unconfigure USART6 DMA TX */
USART_DMA_RX_Unconfigure(USART6); /* Unconfigure USART6 DMA RX */
}
}
#if defined(STM32F427_437xx) || defined(STM32F429_439xx) || defined(STM32F469_479xx) || defined(STM32F413_423xx)
else if(USARTx == UART7)
{
firstFlag &= 0xFFBF;
if(USART7_Buffer_Tx != NULL)
{
free(USART7_Buffer_Tx); /* Release memory */
USART7_Buffer_Tx = NULL;
USART7_BufferSize_Tx = NULL;
}
if(USART7_Buffer_Rx != NULL)
{
free(USART7_Buffer_Rx); /* Release memory */
USART7_Buffer_Rx = NULL;
USART7_BufferSize_Rx = NULL;
}
if( (usartFlag & 0x0040) == 0x0040 )
{
usartFlag &= 0xFFBF;
RCC_APB1PeriphClockCmd(RCC_APB1Periph_UART7, DISABLE); /* Disable USART7 clock */
USART_DeInit(UART7); /* Deinitializes the USART7 peripheral registers to their default reset values. */
USART_DMA_TX_Unconfigure(UART7); /* Unconfigure USART7 DMA TX */
USART_DMA_RX_Unconfigure(UART7); /* Unconfigure USART7 DMA RX */
}
}
else if(USARTx == UART8)
{
firstFlag &= 0xFF7F;
if(USART8_Buffer_Tx != NULL)
{
free(USART8_Buffer_Tx); /* Release memory */
USART8_Buffer_Tx = NULL;
USART8_BufferSize_Tx = NULL;
}
if(USART8_Buffer_Rx != NULL)
{
free(USART8_Buffer_Rx); /* Release memory */
USART8_Buffer_Rx = NULL;
USART8_BufferSize_Rx = NULL;
}
if( (usartFlag & 0x0080) == 0x0080 )
{
usartFlag &= 0xFF7F;
RCC_APB1PeriphClockCmd(RCC_APB1Periph_UART8, DISABLE); /* Disable USART8 clock */
USART_DeInit(UART8); /* Deinitializes the USART8 peripheral registers to their default reset values. */
USART_DMA_TX_Unconfigure(UART8); /* Unconfigure USART8 DMA TX */
USART_DMA_RX_Unconfigure(UART8); /* Unconfigure USART8 DMA RX */
}
}
#endif /* STM32F427_437xx || STM32F429_439xx || STM32F469_479xx || STM32F413_423xx */
#if defined(STM32F413_423xx)
else if(USARTx == UART9)
{
firstFlag &= 0xFEFF;
if(USART9_Buffer_Tx != NULL)
{
free(USART9_Buffer_Tx); /* Release memory */
USART9_Buffer_Tx = NULL;
USART9_BufferSize_Tx = NULL;
}
if(USART9_Buffer_Rx != NULL)
{
free(USART9_Buffer_Rx); /* Release memory */
USART9_Buffer_Rx = NULL;
USART9_BufferSize_Rx = NULL;
}
if( (usartFlag & 0x0100) == 0x0100 )
{
usartFlag &= 0xFEFF;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_UART9, DISABLE); /* Disable USART9 clock */
USART_DeInit(UART9); /* Deinitializes the USART9 peripheral registers to their default reset values. */
USART_DMA_TX_Unconfigure(UART9); /* Unconfigure USART9 DMA TX */
USART_DMA_RX_Unconfigure(UART9); /* Unconfigure USART9 DMA RX */
}
}
else if(USARTx == UART10)
{
firstFlag &= 0xFDFF;
if(USART10_Buffer_Tx != NULL)
{
free(USART10_Buffer_Tx); /* Release memory */
USART10_Buffer_Tx = NULL;
USART10_BufferSize_Tx = NULL;
}
if(USART10_Buffer_Rx != NULL)
{
free(USART10_Buffer_Rx); /* Release memory */
USART10_Buffer_Rx = NULL;
USART10_BufferSize_Rx = NULL;
}
if( (usartFlag & 0x0200) == 0x0200 )
{
usartFlag &= 0xFDFF;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_UART10, DISABLE); /* Disable USART10 clock */
USART_DeInit(UART10); /* Deinitializes the USART10 peripheral registers to their default reset values. */
USART_DMA_TX_Unconfigure(UART10); /* Unconfigure USART10 DMA TX */
USART_DMA_RX_Unconfigure(UART10); /* Unconfigure USART10 DMA RX */
}
}
#endif /* STM32F413_423xx */
}
/****************************************************************
* Function: USART_DMA_TX_Configuration
* Description: USART DMA TX Configuration.
* Input: USARTx
* Output:
* Return:
*****************************************************************/
static void USART_DMA_TX_Configuration(USART_TypeDef* USARTx)
{
DMA_InitTypeDef DMA_InitStructure;
if( (USARTx == USART2)
#if defined(STM32F40_41xxx) || defined(STM32F427_437xx) || defined(STM32F429_439xx) || defined(STM32F469_479xx) || defined(STM32F446xx) || defined(STM32F412xG) || defined(STM32F413_423xx)
|| (USARTx == USART3)
#endif /* STM32F40_41xxx || STM32F427_437xx || STM32F429_439xx || STM32F469_479xx || STM32F446xx || STM32F412xG || STM32F413_423xx */
#if defined(STM32F40_41xxx) || defined(STM32F427_437xx) || defined(STM32F429_439xx) || defined(STM32F469_479xx) || defined(STM32F446xx) || defined(STM32F413_423xx)
|| (USARTx == UART4) || (USARTx == UART5)
#endif /* STM32F40_41xxx || STM32F427_437xx || STM32F429_439xx || STM32F469_479xx || STM32F446xx || STM32F413_423xx */
#if defined(STM32F427_437xx) || defined(STM32F429_439xx) || defined(STM32F469_479xx) || defined(STM32F413_423xx)
|| (USARTx == UART7) || (USARTx == UART8)
#endif /* STM32F427_437xx || STM32F429_439xx || STM32F469_479xx || STM32F413_423xx */
)
{
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_DMA1, ENABLE); /* Enable DMA1 clock */
}
else if( (USARTx == USART1) || (USARTx == USART6)
#if defined(STM32F413_423xx)
|| (USARTx == UART9) || (USARTx == UART10)
#endif /* STM32F413_423xx */
)
{
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_DMA2, ENABLE); /* Enable DMA2 clock */
}
DMA_InitStructure.DMA_DIR = DMA_DIR_MemoryToPeripheral; /* Data from memory to peripheral */
DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable; /* Peripheral address does not increase */
DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable; /* Memory address increment */
DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_Byte; /* Peripheral data width of 8 bit */
DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_Byte; /* Memory data width of 8 bit */
DMA_InitStructure.DMA_Mode = DMA_Mode_Normal; /* Use Normal mode */
DMA_InitStructure.DMA_Priority = DMA_Priority_Medium; /* Medium priority */
DMA_InitStructure.DMA_FIFOMode = DMA_FIFOMode_Disable; /* FIFO mode disabled */
DMA_InitStructure.DMA_FIFOThreshold = DMA_FIFOThreshold_Full; /* Specifies the FIFO threshold level */
DMA_InitStructure.DMA_MemoryBurst = DMA_MemoryBurst_Single; /* A single transmission burst memory */
DMA_InitStructure.DMA_PeripheralBurst = DMA_PeripheralBurst_Single; /* Peripherals single transmission burst */
if(USARTx == USART1)
{
dmaTxFlag |= 0x0001;
DMA_InitStructure.DMA_Channel = DMA_Channel_4; /* Channel selection */
DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)&USART1->DR; /* Set the DMA source: peripheral data register address */
DMA_InitStructure.DMA_Memory0BaseAddr = (uint32_t)USART1_Buffer_Tx; /* Memory address */
DMA_InitStructure.DMA_BufferSize = USART1_BufferSize_Tx; /* Specifies the DMA channel DMA buffer size */
DMA_DeInit(DMA2_Stream7); /* Deinitialize the DMA2 Stream7 registers to their default reset values. */
while( DMA_GetCmdStatus(DMA2_Stream7) != DISABLE ); /* Wait for the specified DMA2 Stream7 reset to complete. */
DMA_Init(DMA2_Stream7, &DMA_InitStructure); /* Initializes the DMA2 Stream7. */
DMA_Cmd(DMA2_Stream7, DISABLE); /* Disables the specified DMA2 Stream7. */
}
else if(USARTx == USART2)
{
dmaTxFlag |= 0x0002;
DMA_InitStructure.DMA_Channel = DMA_Channel_4; /* Channel selection */
DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)&USART2->DR; /* Set the DMA source: peripheral data register address */
DMA_InitStructure.DMA_Memory0BaseAddr = (uint32_t)USART2_Buffer_Tx; /* Memory address */
DMA_InitStructure.DMA_BufferSize = USART2_BufferSize_Tx; /* Specifies the DMA channel DMA buffer size */
DMA_DeInit(DMA1_Stream6); /* Deinitialize the DMA1 Stream6 registers to their default reset values. */
while( DMA_GetCmdStatus(DMA1_Stream6) != DISABLE ); /* Wait for the specified DMA1 Stream6 reset to complete. */
DMA_Init(DMA1_Stream6, &DMA_InitStructure); /* Initializes the DMA1 Stream6. */
DMA_Cmd(DMA1_Stream6, DISABLE); /* Disables the specified DMA1 Stream6. */
}
#if defined(STM32F40_41xxx) || defined(STM32F427_437xx) || defined(STM32F429_439xx) || defined(STM32F469_479xx) || defined(STM32F446xx) || defined(STM32F412xG) || defined(STM32F413_423xx)
else if(USARTx == USART3)
{
dmaTxFlag |= 0x0004;
DMA_InitStructure.DMA_Channel = DMA_Channel_4; /* Channel selection */
DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)&USART3->DR; /* Set the DMA source: peripheral data register address */
DMA_InitStructure.DMA_Memory0BaseAddr = (uint32_t)USART3_Buffer_Tx; /* Memory address */
DMA_InitStructure.DMA_BufferSize = USART3_BufferSize_Tx; /* Specifies the DMA channel DMA buffer size */
DMA_DeInit(DMA1_Stream3); /* Deinitialize the DMA1 Stream3 registers to their default reset values. */
while( DMA_GetCmdStatus(DMA1_Stream3) != DISABLE ); /* Wait for the specified DMA1 Stream3 reset to complete. */
DMA_Init(DMA1_Stream3, &DMA_InitStructure); /* Initializes the DMA1 Stream3. */
DMA_Cmd(DMA1_Stream3, DISABLE); /* Disables the specified DMA1 Stream3. */
}
#endif /* STM32F40_41xxx || STM32F427_437xx || STM32F429_439xx || STM32F469_479xx || STM32F446xx || STM32F412xG || STM32F413_423xx */
#if defined(STM32F40_41xxx) || defined(STM32F427_437xx) || defined(STM32F429_439xx) || defined(STM32F469_479xx) || defined(STM32F446xx) || defined(STM32F413_423xx)
else if(USARTx == UART4)
{
dmaTxFlag |= 0x0008;
DMA_InitStructure.DMA_Channel = DMA_Channel_4; /* Channel selection */
DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)&UART4->DR; /* Set the DMA source: peripheral data register address */
DMA_InitStructure.DMA_Memory0BaseAddr = (uint32_t)USART4_Buffer_Tx; /* Memory address */
DMA_InitStructure.DMA_BufferSize = USART4_BufferSize_Tx; /* Specifies the DMA channel DMA buffer size */
DMA_DeInit(DMA1_Stream4); /* Deinitialize the DMA1 Stream4 registers to their default reset values. */
while( DMA_GetCmdStatus(DMA1_Stream4) != DISABLE ); /* Wait for the specified DMA1 Stream4 reset to complete. */
DMA_Init(DMA1_Stream4, &DMA_InitStructure); /* Initializes the DMA1 Stream4. */
DMA_Cmd(DMA1_Stream4, DISABLE); /* Disables the specified DMA1 Stream4. */
}
else if(USARTx == UART5)
{
dmaTxFlag |= 0x0010;
DMA_InitStructure.DMA_Channel = DMA_Channel_4; /* Channel selection */
DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)&UART5->DR; /* Set the DMA source: peripheral data register address */
DMA_InitStructure.DMA_Memory0BaseAddr = (uint32_t)USART5_Buffer_Tx; /* Memory address */
DMA_InitStructure.DMA_BufferSize = USART5_BufferSize_Tx; /* Specifies the DMA channel DMA buffer size */
DMA_DeInit(DMA1_Stream7); /* Deinitialize the DMA1 Stream7 registers to their default reset values. */
while( DMA_GetCmdStatus(DMA1_Stream7) != DISABLE ); /* Wait for the specified DMA1 Stream7 reset to complete. */
DMA_Init(DMA1_Stream7, &DMA_InitStructure); /* Initializes the DMA1 Stream7. */
DMA_Cmd(DMA1_Stream7, DISABLE); /* Disables the specified DMA1 Stream7. */
}
#endif /* STM32F40_41xxx || STM32F427_437xx || STM32F429_439xx || STM32F469_479xx || STM32F446xx || STM32F413_423xx */
else if(USARTx == USART6)
{
dmaTxFlag |= 0x0020;
DMA_InitStructure.DMA_Channel = DMA_Channel_5; /* Channel selection */
DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)&USART6->DR; /* Set the DMA source: peripheral data register address */
DMA_InitStructure.DMA_Memory0BaseAddr = (uint32_t)USART6_Buffer_Tx; /* Memory address */
DMA_InitStructure.DMA_BufferSize = USART6_BufferSize_Tx; /* Specifies the DMA channel DMA buffer size */
DMA_DeInit(DMA2_Stream6); /* Deinitialize the DMA2 Stream6 registers to their default reset values. */
while( DMA_GetCmdStatus(DMA2_Stream6) != DISABLE ); /* Wait for the specified DMA2 Stream6 reset to complete. */
DMA_Init(DMA2_Stream6, &DMA_InitStructure); /* Initializes the DMA2 Stream6. */
DMA_Cmd(DMA2_Stream6, DISABLE); /* Disables the specified DMA2 Stream6. */
}
#if defined(STM32F427_437xx) || defined(STM32F429_439xx) || defined(STM32F469_479xx) || defined(STM32F413_423xx)
else if(USARTx == UART7)
{
dmaTxFlag |= 0x0040;
DMA_InitStructure.DMA_Channel = DMA_Channel_5; /* Channel selection */
DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)&UART7->DR; /* Set the DMA source: peripheral data register address */
DMA_InitStructure.DMA_Memory0BaseAddr = (uint32_t)USART7_Buffer_Tx; /* Memory address */
DMA_InitStructure.DMA_BufferSize = USART7_BufferSize_Tx; /* Specifies the DMA channel DMA buffer size */
DMA_DeInit(DMA1_Stream1); /* Deinitialize the DMA1 Stream1 registers to their default reset values. */
while( DMA_GetCmdStatus(DMA1_Stream1) != DISABLE ); /* Wait for the specified DMA1 Stream1 reset to complete. */
DMA_Init(DMA1_Stream1, &DMA_InitStructure); /* Initializes the DMA1 Stream1. */
DMA_Cmd(DMA1_Stream1, DISABLE); /* Disables the specified DMA1 Stream1. */
}
else if(USARTx == UART8)
{
dmaTxFlag |= 0x0080;
DMA_InitStructure.DMA_Channel = DMA_Channel_5; /* Channel selection */
DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)&UART8->DR; /* Set the DMA source: peripheral data register address */
DMA_InitStructure.DMA_Memory0BaseAddr = (uint32_t)USART8_Buffer_Tx; /* Memory address */
DMA_InitStructure.DMA_BufferSize = USART8_BufferSize_Tx; /* Specifies the DMA channel DMA buffer size */
DMA_DeInit(DMA1_Stream0); /* Deinitialize the DMA1 Stream0 registers to their default reset values. */
while( DMA_GetCmdStatus(DMA1_Stream0) != DISABLE ); /* Wait for the specified DMA1 Stream0 reset to complete. */
DMA_Init(DMA1_Stream0, &DMA_InitStructure); /* Initializes the DMA1 Stream0. */
DMA_Cmd(DMA1_Stream0, DISABLE); /* Disables the specified DMA1 Stream0. */
}
#endif /* STM32F427_437xx || STM32F429_439xx || STM32F469_479xx || STM32F413_423xx */
#if defined(STM32F413_423xx)
else if(USARTx == UART9)
{
dmaTxFlag |= 0x0100;
DMA_InitStructure.DMA_Channel = DMA_Channel_1; /* Channel selection */
DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)&UART9->DR; /* Set the DMA source: peripheral data register address */
DMA_InitStructure.DMA_Memory0BaseAddr = (uint32_t)USART9_Buffer_Tx; /* Memory address */
DMA_InitStructure.DMA_BufferSize = USART9_BufferSize_Tx; /* Specifies the DMA channel DMA buffer size */
DMA_DeInit(DMA2_Stream0); /* Deinitialize the DMA2 Stream0 registers to their default reset values. */
while( DMA_GetCmdStatus(DMA2_Stream0) != DISABLE ); /* Wait for the specified DMA2 Stream0 reset to complete. */
DMA_Init(DMA2_Stream0, &DMA_InitStructure); /* Initializes the DMA2 Stream0. */
DMA_Cmd(DMA2_Stream0, DISABLE); /* Disables the specified DMA2 Stream0. */
}
else if(USARTx == UART10)
{
dmaTxFlag |= 0x0200;
DMA_InitStructure.DMA_Channel = DMA_Channel_6; /* Channel selection */
DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)&UART10->DR; /* Set the DMA source: peripheral data register address */
DMA_InitStructure.DMA_Memory0BaseAddr = (uint32_t)USART10_Buffer_Tx; /* Memory address */
DMA_InitStructure.DMA_BufferSize = USART10_BufferSize_Tx; /* Specifies the DMA channel DMA buffer size */
DMA_DeInit(DMA2_Stream7); /* Deinitialize the DMA2 Stream7 registers to their default reset values. */
while( DMA_GetCmdStatus(DMA2_Stream7) != DISABLE ); /* Wait for the specified DMA2 Stream7 reset to complete. */
DMA_Init(DMA2_Stream7, &DMA_InitStructure); /* Initializes the DMA2 Stream7. */
DMA_Cmd(DMA2_Stream7, DISABLE); /* Disables the specified DMA2 Stream7. */
}
#endif /* STM32F413_423xx */
}
/****************************************************************
* Function: USART_DMA_RX_Configuration
* Description: USART DMA RX Configuration.
* Input: USARTx
* Output:
* Return:
*****************************************************************/
static void USART_DMA_RX_Configuration(USART_TypeDef* USARTx)
{
DMA_InitTypeDef DMA_InitStructure;
if( (USARTx == USART2)
#if defined(STM32F40_41xxx) || defined(STM32F427_437xx) || defined(STM32F429_439xx) || defined(STM32F469_479xx) || defined(STM32F446xx) || defined(STM32F412xG) || defined(STM32F413_423xx)
|| (USARTx == USART3)
#endif /* STM32F40_41xxx || STM32F427_437xx || STM32F429_439xx || STM32F469_479xx || STM32F446xx || STM32F412xG || STM32F413_423xx */
#if defined(STM32F40_41xxx) || defined(STM32F427_437xx) || defined(STM32F429_439xx) || defined(STM32F469_479xx) || defined(STM32F446xx) || defined(STM32F413_423xx)
|| (USARTx == UART4) || (USARTx == UART5)
#endif /* STM32F40_41xxx || STM32F427_437xx || STM32F429_439xx || STM32F469_479xx || STM32F446xx || STM32F413_423xx */
#if defined(STM32F427_437xx) || defined(STM32F429_439xx) || defined(STM32F469_479xx) || defined(STM32F413_423xx)
|| (USARTx == UART7) || (USARTx == UART8)
#endif /* STM32F427_437xx || STM32F429_439xx || STM32F469_479xx || STM32F413_423xx */
)
{
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_DMA1, ENABLE); /* Enable DMA1 clock */
}
else if( (USARTx == USART1) || (USARTx == USART6)
#if defined(STM32F413_423xx)
|| (USARTx == UART9) || (USARTx == UART10)
#endif /* STM32F413_423xx */
)
{
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_DMA2, ENABLE); /* Enable DMA2 clock */
}
DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralToMemory; /* Data Peripheral to Memory */
DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable; /* Peripheral address does not increase */
DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable; /* Memory address increment */
DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_Byte; /* Peripheral data width of 8 bit */
DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_Byte; /* Memory data width of 8 bit */
DMA_InitStructure.DMA_Mode = DMA_Mode_Circular; /* Use Circular mode */
DMA_InitStructure.DMA_Priority = DMA_Priority_Medium; /* Medium priority */
DMA_InitStructure.DMA_FIFOMode = DMA_FIFOMode_Disable; /* FIFO mode disabled */
DMA_InitStructure.DMA_FIFOThreshold = DMA_FIFOThreshold_Full; /* Specifies the FIFO threshold level */
DMA_InitStructure.DMA_MemoryBurst = DMA_MemoryBurst_Single; /* A single transmission burst memory */
DMA_InitStructure.DMA_PeripheralBurst = DMA_PeripheralBurst_Single; /* Peripherals single transmission burst */
if(USARTx == USART1)
{
dmaRxFlag |= 0x0001;
DMA_InitStructure.DMA_Channel = DMA_Channel_4; /* Channel selection */
DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)&USART1->DR; /* Set the DMA source: peripheral data register address */
DMA_InitStructure.DMA_Memory0BaseAddr = (uint32_t)USART1_Buffer_Rx; /* Memory address */
DMA_InitStructure.DMA_BufferSize = USART1_BufferSize_Rx; /* Specifies the DMA channel DMA buffer size */
DMA_DeInit(DMA2_Stream2); /* Deinitialize the DMA2 Stream2 registers to their default reset values. */
while( DMA_GetCmdStatus(DMA2_Stream2) != DISABLE ); /* Wait for the specified DMA2 Stream2 reset to complete. */
DMA_Init(DMA2_Stream2, &DMA_InitStructure); /* Initializes the DMA2 Stream2. */
DMA_Cmd(DMA2_Stream2, ENABLE); /* Enables the specified DMA2 Stream2. */
}
else if(USARTx == USART2)
{
dmaRxFlag |= 0x0002;
DMA_InitStructure.DMA_Channel = DMA_Channel_4; /* Channel selection */
DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)&USART2->DR; /* Set the DMA source: peripheral data register address */
DMA_InitStructure.DMA_Memory0BaseAddr = (uint32_t)USART2_Buffer_Rx; /* Memory address */
DMA_InitStructure.DMA_BufferSize = USART2_BufferSize_Rx; /* Specifies the DMA channel DMA buffer size */
DMA_DeInit(DMA1_Stream5); /* Deinitialize the DMA1 Stream5 registers to their default reset values. */
while( DMA_GetCmdStatus(DMA1_Stream5) != DISABLE ); /* Wait for the specified DMA1 Stream5 reset to complete. */
DMA_Init(DMA1_Stream5, &DMA_InitStructure); /* Initializes the DMA1 Stream5. */
DMA_Cmd(DMA1_Stream5, ENABLE); /* Enables the specified DMA1 Stream5. */
}
#if defined(STM32F40_41xxx) || defined(STM32F427_437xx) || defined(STM32F429_439xx) || defined(STM32F469_479xx) || defined(STM32F446xx) || defined(STM32F412xG) || defined(STM32F413_423xx)
else if(USARTx == USART3)
{
dmaRxFlag |= 0x0004;
DMA_InitStructure.DMA_Channel = DMA_Channel_4; /* Channel selection */
DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)&USART3->DR; /* Set the DMA source: peripheral data register address */
DMA_InitStructure.DMA_Memory0BaseAddr = (uint32_t)USART3_Buffer_Rx; /* Memory address */
DMA_InitStructure.DMA_BufferSize = USART3_BufferSize_Rx; /* Specifies the DMA channel DMA buffer size */
DMA_DeInit(DMA1_Stream1); /* Deinitialize the DMA1 Stream1 registers to their default reset values. */
while( DMA_GetCmdStatus(DMA1_Stream1) != DISABLE ); /* Wait for the specified DMA1 Stream1 reset to complete. */
DMA_Init(DMA1_Stream1, &DMA_InitStructure); /* Initializes the DMA1 Stream1. */
DMA_Cmd(DMA1_Stream1, ENABLE); /* Enables the specified DMA1 Stream1. */
}
#endif /* STM32F40_41xxx || STM32F427_437xx || STM32F429_439xx || STM32F469_479xx || STM32F446xx || STM32F412xG || STM32F413_423xx */
#if defined(STM32F40_41xxx) || defined(STM32F427_437xx) || defined(STM32F429_439xx) || defined(STM32F469_479xx) || defined(STM32F446xx) || defined(STM32F413_423xx)
else if(USARTx == UART4)
{
dmaRxFlag |= 0x0008;
DMA_InitStructure.DMA_Channel = DMA_Channel_4; /* Channel selection */
DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)&UART4->DR; /* Set the DMA source: peripheral data register address */
DMA_InitStructure.DMA_Memory0BaseAddr = (uint32_t)USART4_Buffer_Rx; /* Memory address */
DMA_InitStructure.DMA_BufferSize = USART4_BufferSize_Rx; /* Specifies the DMA channel DMA buffer size */
DMA_DeInit(DMA1_Stream2); /* Deinitialize the DMA1 Stream2 registers to their default reset values. */
while( DMA_GetCmdStatus(DMA1_Stream2) != DISABLE ); /* Wait for the specified DMA1 Stream2 reset to complete. */
DMA_Init(DMA1_Stream2, &DMA_InitStructure); /* Initializes the DMA1 Stream2. */
DMA_Cmd(DMA1_Stream2, ENABLE); /* Enables the specified DMA1 Stream2. */
}
else if(USARTx == UART5)
{
dmaRxFlag |= 0x0010;
DMA_InitStructure.DMA_Channel = DMA_Channel_4; /* Channel selection */
DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)&UART5->DR; /* Set the DMA source: peripheral data register address */
DMA_InitStructure.DMA_Memory0BaseAddr = (uint32_t)USART5_Buffer_Rx; /* Memory address */
DMA_InitStructure.DMA_BufferSize = USART5_BufferSize_Rx; /* Specifies the DMA channel DMA buffer size */
DMA_DeInit(DMA1_Stream0); /* Deinitialize the DMA1 Stream0 registers to their default reset values. */
while( DMA_GetCmdStatus(DMA1_Stream0) != DISABLE ); /* Wait for the specified DMA1 Stream0 reset to complete. */
DMA_Init(DMA1_Stream0, &DMA_InitStructure); /* Initializes the DMA1 Stream0. */
DMA_Cmd(DMA1_Stream0, ENABLE); /* Enables the specified DMA1 Stream0. */
}
#endif /* STM32F40_41xxx || STM32F427_437xx || STM32F429_439xx || STM32F469_479xx || STM32F446xx || STM32F413_423xx */
else if(USARTx == USART6)
{
dmaRxFlag |= 0x0020;
DMA_InitStructure.DMA_Channel = DMA_Channel_5; /* Channel selection */
DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)&USART6->DR; /* Set the DMA source: peripheral data register address */
DMA_InitStructure.DMA_Memory0BaseAddr = (uint32_t)USART6_Buffer_Rx; /* Memory address */
DMA_InitStructure.DMA_BufferSize = USART6_BufferSize_Rx; /* Specifies the DMA channel DMA buffer size */
DMA_DeInit(DMA2_Stream1); /* Deinitialize the DMA2 Stream1 registers to their default reset values. */
while( DMA_GetCmdStatus(DMA2_Stream1) != DISABLE ); /* Wait for the specified DMA2 Stream1 reset to complete. */
DMA_Init(DMA2_Stream1, &DMA_InitStructure); /* Initializes the DMA2 Stream1. */
DMA_Cmd(DMA2_Stream1, ENABLE); /* Enables the specified DMA2 Stream1. */
}
#if defined(STM32F427_437xx) || defined(STM32F429_439xx) || defined(STM32F469_479xx) || defined(STM32F413_423xx)
else if(USARTx == UART7)
{
dmaRxFlag |= 0x0040;
DMA_InitStructure.DMA_Channel = DMA_Channel_5; /* Channel selection */
DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)&UART7->DR; /* Set the DMA source: peripheral data register address */
DMA_InitStructure.DMA_Memory0BaseAddr = (uint32_t)USART7_Buffer_Rx; /* Memory address */
DMA_InitStructure.DMA_BufferSize = USART7_BufferSize_Rx; /* Specifies the DMA channel DMA buffer size */
DMA_DeInit(DMA1_Stream3); /* Deinitialize the DMA1 Stream3 registers to their default reset values. */
while( DMA_GetCmdStatus(DMA1_Stream3) != DISABLE ); /* Wait for the specified DMA1 Stream3 reset to complete. */
DMA_Init(DMA1_Stream3, &DMA_InitStructure); /* Initializes the DMA1 Stream3. */
DMA_Cmd(DMA1_Stream3, ENABLE); /* Enables the specified DMA1 Stream3. */
}
else if(USARTx == UART8)
{
dmaRxFlag |= 0x0080;
DMA_InitStructure.DMA_Channel = DMA_Channel_5; /* Channel selection */
DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)&UART8->DR; /* Set the DMA source: peripheral data register address */
DMA_InitStructure.DMA_Memory0BaseAddr = (uint32_t)USART8_Buffer_Rx; /* Memory address */
DMA_InitStructure.DMA_BufferSize = USART8_BufferSize_Rx; /* Specifies the DMA channel DMA buffer size */
DMA_DeInit(DMA1_Stream6); /* Deinitialize the DMA1 Stream6 registers to their default reset values. */
while( DMA_GetCmdStatus(DMA1_Stream6) != DISABLE ); /* Wait for the specified DMA1 Stream6 reset to complete. */
DMA_Init(DMA1_Stream6, &DMA_InitStructure); /* Initializes the DMA1 Stream6. */
DMA_Cmd(DMA1_Stream6, ENABLE); /* Enables the specified DMA1 Stream6. */
}
#endif /* STM32F427_437xx || STM32F429_439xx || STM32F469_479xx || STM32F413_423xx */
#if defined(STM32F413_423xx)
else if(USARTx == UART9)
{
dmaRxFlag |= 0x0100;
DMA_InitStructure.DMA_Channel = DMA_Channel_0; /* Channel selection */
DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)&UART9->DR; /* Set the DMA source: peripheral data register address */
DMA_InitStructure.DMA_Memory0BaseAddr = (uint32_t)USART9_Buffer_Rx; /* Memory address */
DMA_InitStructure.DMA_BufferSize = USART9_BufferSize_Rx; /* Specifies the DMA channel DMA buffer size */
DMA_DeInit(DMA2_Stream7); /* Deinitialize the DMA2 Stream7 registers to their default reset values. */
while( DMA_GetCmdStatus(DMA2_Stream7) != DISABLE ); /* Wait for the specified DMA2 Stream7 reset to complete. */
DMA_Init(DMA2_Stream7, &DMA_InitStructure); /* Initializes the DMA2 Stream7. */
DMA_Cmd(DMA2_Stream7, ENABLE); /* Enables the specified DMA2 Stream7. */
}
else if(USARTx == UART10)
{
dmaRxFlag |= 0x0200;
DMA_InitStructure.DMA_Channel = DMA_Channel_5; /* Channel selection */
DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)&UART10->DR; /* Set the DMA source: peripheral data register address */
DMA_InitStructure.DMA_Memory0BaseAddr = (uint32_t)USART10_Buffer_Rx; /* Memory address */
DMA_InitStructure.DMA_BufferSize = USART10_BufferSize_Rx; /* Specifies the DMA channel DMA buffer size */
DMA_DeInit(DMA2_Stream0); /* Deinitialize the DMA2 Stream0 registers to their default reset values. */
while( DMA_GetCmdStatus(DMA2_Stream0) != DISABLE ); /* Wait for the specified DMA2 Stream0 reset to complete. */
DMA_Init(DMA2_Stream0, &DMA_InitStructure); /* Initializes the DMA2 Stream0. */
DMA_Cmd(DMA2_Stream0, ENABLE); /* Enables the specified DMA2 Stream0. */
}
#endif /* STM32F413_423xx */
}
/****************************************************************
* Function: USART_DMA_TX_Unconfigure
* Description: USART DMA TX Unconfigure.
* Input: USARTx
* Output:
* Return:
*****************************************************************/
static void USART_DMA_TX_Unconfigure(USART_TypeDef* USARTx)
{
if(USARTx == USART1)
{
if( (dmaTxFlag & 0x0001) == 0x0001 )
{
dmaTxFlag &= 0xFFFE;
DMA_DeInit(DMA2_Stream7); /* Deinitialize the DMA2 Stream7 registers to their default reset values. */
while( DMA_GetCmdStatus(DMA2_Stream7) != DISABLE ); /* Wait for the specified DMA2 Stream7 reset to complete. */
}
}
else if(USARTx == USART2)
{
if( (dmaTxFlag & 0x0002) == 0x0002 )
{
dmaTxFlag &= 0xFFFD;
DMA_DeInit(DMA1_Stream6); /* Deinitialize the DMA1 Stream6 registers to their default reset values. */
while( DMA_GetCmdStatus(DMA1_Stream6) != DISABLE ); /* Wait for the specified DMA1 Stream6 reset to complete. */
}
}
#if defined(STM32F40_41xxx) || defined(STM32F427_437xx) || defined(STM32F429_439xx) || defined(STM32F469_479xx) || defined(STM32F446xx) || defined(STM32F412xG) || defined(STM32F413_423xx)
else if(USARTx == USART3)
{
if( (dmaTxFlag & 0x0004) == 0x0004 )
{
dmaTxFlag &= 0xFFFB;
DMA_DeInit(DMA1_Stream3); /* Deinitialize the DMA1 Stream3 registers to their default reset values. */
while( DMA_GetCmdStatus(DMA1_Stream3) != DISABLE ); /* Wait for the specified DMA1 Stream3 reset to complete. */
}
}
#endif /* STM32F40_41xxx || STM32F427_437xx || STM32F429_439xx || STM32F469_479xx || STM32F446xx || STM32F412xG || STM32F413_423xx */
#if defined(STM32F40_41xxx) || defined(STM32F427_437xx) || defined(STM32F429_439xx) || defined(STM32F469_479xx) || defined(STM32F446xx) || defined(STM32F413_423xx)
else if(USARTx == UART4)
{
if( (dmaTxFlag & 0x0008) == 0x0008 )
{
dmaTxFlag &= 0xFFF7;
DMA_DeInit(DMA1_Stream4); /* Deinitialize the DMA1 Stream4 registers to their default reset values. */
while( DMA_GetCmdStatus(DMA1_Stream4) != DISABLE ); /* Wait for the specified DMA1 Stream4 reset to complete. */
}
}
else if(USARTx == UART5)
{
if( (dmaTxFlag & 0x0010) == 0x0010 )
{
dmaTxFlag &= 0xFFEF;
DMA_DeInit(DMA1_Stream7); /* Deinitialize the DMA1 Stream7 registers to their default reset values. */
while( DMA_GetCmdStatus(DMA1_Stream7) != DISABLE ); /* Wait for the specified DMA1 Stream7 reset to complete. */
}
}
#endif /* STM32F40_41xxx || STM32F427_437xx || STM32F429_439xx || STM32F469_479xx || STM32F446xx || STM32F413_423xx */
else if(USARTx == USART6)
{
if( (dmaTxFlag & 0x0020) == 0x0020 )
{
dmaTxFlag &= 0xFFDF;
DMA_DeInit(DMA2_Stream6); /* Deinitialize the DMA2 Stream6 registers to their default reset values. */
while( DMA_GetCmdStatus(DMA2_Stream6) != DISABLE ); /* Wait for the specified DMA2 Stream6 reset to complete. */
}
}
#if defined(STM32F427_437xx) || defined(STM32F429_439xx) || defined(STM32F469_479xx) || defined(STM32F413_423xx)
else if(USARTx == UART7)
{
if( (dmaTxFlag & 0x0040) == 0x0040 )
{
dmaTxFlag &= 0xFFBF;
DMA_DeInit(DMA1_Stream1); /* Deinitialize the DMA1 Stream1 registers to their default reset values. */
while( DMA_GetCmdStatus(DMA1_Stream1) != DISABLE ); /* Wait for the specified DMA1 Stream1 reset to complete. */
}
}
else if(USARTx == UART8)
{
if( (dmaTxFlag & 0x0080) == 0x0080 )
{
dmaTxFlag &= 0xFF7F;
DMA_DeInit(DMA1_Stream0); /* Deinitialize the DMA1 Stream0 registers to their default reset values. */
while( DMA_GetCmdStatus(DMA1_Stream0) != DISABLE ); /* Wait for the specified DMA1 Stream0 reset to complete. */
}
}
#endif /* STM32F427_437xx || STM32F429_439xx || STM32F469_479xx || STM32F413_423xx */
#if defined(STM32F413_423xx)
else if(USARTx == UART9)
{
if( (dmaTxFlag & 0x0100) == 0x0100 )
{
dmaTxFlag &= 0xFEFF;
DMA_DeInit(DMA2_Stream0); /* Deinitialize the DMA2 Stream0 registers to their default reset values. */
while( DMA_GetCmdStatus(DMA2_Stream0) != DISABLE ); /* Wait for the specified DMA2 Stream0 reset to complete. */
}
}
else if(USARTx == UART10)
{
if( (dmaTxFlag & 0x0200) == 0x0200 )
{
dmaTxFlag &= 0xFDFF;
DMA_DeInit(DMA2_Stream7); /* Deinitialize the DMA2 Stream7 registers to their default reset values. */
while( DMA_GetCmdStatus(DMA2_Stream7) != DISABLE ); /* Wait for the specified DMA2 Stream7 reset to complete. */
}
}
#endif /* STM32F413_423xx */
}
/****************************************************************
* Function: USART_DMA_RX_Unconfigure
* Description: USART DMA RX Unconfigure.
* Input: USARTx
* Output:
* Return:
*****************************************************************/
static void USART_DMA_RX_Unconfigure(USART_TypeDef* USARTx)
{
if(USARTx == USART1)
{
if( (dmaRxFlag & 0x0001) == 0x0001 )
{
dmaRxFlag &= 0xFFFE;
DMA_DeInit(DMA2_Stream2); /* Deinitialize the DMA2 Stream2 registers to their default reset values. */
while( DMA_GetCmdStatus(DMA2_Stream2) != DISABLE ); /* Wait for the specified DMA2 Stream2 reset to complete. */
}
}
else if(USARTx == USART2)
{
if( (dmaRxFlag & 0x0002) == 0x0002 )
{
dmaRxFlag &= 0xFFFD;
DMA_DeInit(DMA1_Stream5); /* Deinitialize the DMA1 Stream5 registers to their default reset values. */
while( DMA_GetCmdStatus(DMA1_Stream5) != DISABLE ); /* Wait for the specified DMA1 Stream5 reset to complete. */
}
}
#if defined(STM32F40_41xxx) || defined(STM32F427_437xx) || defined(STM32F429_439xx) || defined(STM32F469_479xx) || defined(STM32F446xx) || defined(STM32F412xG) || defined(STM32F413_423xx)
else if(USARTx == USART3)
{
if( (dmaRxFlag & 0x0004) == 0x0004 )
{
dmaRxFlag &= 0xFFFB;
DMA_DeInit(DMA1_Stream1); /* Deinitialize the DMA1 Stream1 registers to their default reset values. */
while( DMA_GetCmdStatus(DMA1_Stream1) != DISABLE ); /* Wait for the specified DMA1 Stream1 reset to complete. */
}
}
#endif /* STM32F40_41xxx || STM32F427_437xx || STM32F429_439xx || STM32F469_479xx || STM32F446xx || STM32F412xG || STM32F413_423xx */
#if defined(STM32F40_41xxx) || defined(STM32F427_437xx) || defined(STM32F429_439xx) || defined(STM32F469_479xx) || defined(STM32F446xx) || defined(STM32F413_423xx)
else if(USARTx == UART4)
{
if( (dmaRxFlag & 0x0008) == 0x0008 )
{
dmaRxFlag &= 0xFFF7;
DMA_DeInit(DMA1_Stream2); /* Deinitialize the DMA1 Stream2 registers to their default reset values. */
while( DMA_GetCmdStatus(DMA1_Stream2) != DISABLE ); /* Wait for the specified DMA1 Stream2 reset to complete. */
}
}
else if(USARTx == UART5)
{
if( (dmaRxFlag & 0x0010) == 0x0010 )
{
dmaRxFlag &= 0xFFEF;
DMA_DeInit(DMA1_Stream0); /* Deinitialize the DMA1 Stream0 registers to their default reset values. */
while( DMA_GetCmdStatus(DMA1_Stream0) != DISABLE ); /* Wait for the specified DMA1 Stream0 reset to complete. */
}
}
#endif /* STM32F40_41xxx || STM32F427_437xx || STM32F429_439xx || STM32F469_479xx || STM32F446xx || STM32F413_423xx */
else if(USARTx == USART6)
{
if( (dmaRxFlag & 0x0020) == 0x0020 )
{
dmaRxFlag &= 0xFFDF;
DMA_DeInit(DMA2_Stream1); /* Deinitialize the DMA2 Stream1 registers to their default reset values. */
while( DMA_GetCmdStatus(DMA2_Stream1) != DISABLE ); /* Wait for the specified DMA2 Stream1 reset to complete. */
}
}
#if defined(STM32F427_437xx) || defined(STM32F429_439xx) || defined(STM32F469_479xx) || defined(STM32F413_423xx)
else if(USARTx == UART7)
{
if( (dmaRxFlag & 0x0040) == 0x0040 )
{
dmaRxFlag &= 0xFFBF;
DMA_DeInit(DMA1_Stream3); /* Deinitialize the DMA1 Stream3 registers to their default reset values. */
while( DMA_GetCmdStatus(DMA1_Stream3) != DISABLE ); /* Wait for the specified DMA1 Stream3 reset to complete. */
}
}
else if(USARTx == UART8)
{
if( (dmaRxFlag & 0x0080) == 0x0080 )
{
dmaRxFlag &= 0xFF7F;
DMA_DeInit(DMA1_Stream6); /* Deinitialize the DMA1 Stream6 registers to their default reset values. */
while( DMA_GetCmdStatus(DMA1_Stream6) != DISABLE ); /* Wait for the specified DMA1 Stream6 reset to complete. */
}
}
#endif /* STM32F427_437xx || STM32F429_439xx || STM32F469_479xx || STM32F413_423xx */
#if defined(STM32F413_423xx)
else if(USARTx == UART9)
{
if( (dmaRxFlag & 0x0100) == 0x0100 )
{
dmaRxFlag &= 0xFEFF;
DMA_DeInit(DMA2_Stream7); /* Deinitialize the DMA2 Stream7 registers to their default reset values. */
while( DMA_GetCmdStatus(DMA2_Stream7) != DISABLE ); /* Wait for the specified DMA2 Stream7 reset to complete. */
}
}
else if(USARTx == UART10)
{
if( (dmaRxFlag & 0x0200) == 0x0200 )
{
dmaRxFlag &= 0xFDFF;
DMA_DeInit(DMA2_Stream0); /* Deinitialize the DMA2 Stream0 registers to their default reset values. */
while( DMA_GetCmdStatus(DMA2_Stream0) != DISABLE ); /* Wait for the specified DMA2 Stream0 reset to complete. */
}
}
#endif /* STM32F413_423xx */
}
/****************************************************************
* Function: USART_SetSendData
* Description: USART Set Send Data.
* Input: USARTx
* Buffer
* BufferSize
* Output:
* Return: Send Data Number
*****************************************************************/
uint16_t USART_SetSendData(USART_TypeDef* USARTx, void* Buffer, uint16_t BufferSize)
{
if(BufferSize == NULL)
{
return NULL;
}
if(USARTx == USART1)
{
if( (dmaTxFlag & 0x0001) != 0x0001 )
{
return NULL;
}
if(BufferSize > USART1_BufferSize_Tx)
{
return NULL;
}
if( (firstFlag & 0x0001) != 0x0001)
{
firstFlag |= 0x0001;
}
else
{
while( DMA_GetFlagStatus(DMA2_Stream7, DMA_FLAG_TCIF7) == RESET );
}
memcpy(USART1_Buffer_Tx, Buffer, BufferSize); /* Copy memory */
DMA_ClearFlag(DMA2_Stream7, DMA_FLAG_TCIF7); /* Clears the DMA2 Stream7's pending flags. */
DMA_Cmd(DMA2_Stream7, DISABLE); /* Disables the specified DMA2 Stream7. */
while( DMA_GetCmdStatus(DMA2_Stream7) != DISABLE ); /* Wait for the specified DMA2 Stream7 disable to finish. */
DMA_SetCurrDataCounter(DMA2_Stream7, BufferSize); /* Writes the number of data units to be transferred on the DMA2 Stream7. */
DMA_Cmd(DMA2_Stream7, ENABLE); /* Enables the specified DMA2 Stream7. */
return BufferSize;
}
else if(USARTx == USART2)
{
if( (dmaTxFlag & 0x0002) != 0x0002 )
{
return NULL;
}
if(BufferSize > USART2_BufferSize_Tx)
{
return NULL;
}
if( (firstFlag & 0x0002) != 0x0002 )
{
firstFlag |= 0x0002;
}
else
{
while( DMA_GetFlagStatus(DMA1_Stream6, DMA_FLAG_TCIF6) == RESET );
}
memcpy(USART2_Buffer_Tx, Buffer, BufferSize); /* Copy memory */
DMA_ClearFlag(DMA1_Stream6, DMA_FLAG_TCIF6); /* Clears the DMA1 Stream6's pending flags. */
DMA_Cmd(DMA1_Stream6, DISABLE); /* Disables the specified DMA1 Stream6. */
while( DMA_GetCmdStatus(DMA1_Stream6) != DISABLE ); /* Wait for the specified DMA1 Stream6 disable to finish. */
DMA_SetCurrDataCounter(DMA1_Stream6, BufferSize); /* Writes the number of data units to be transferred on the DMA1 Stream6. */
DMA_Cmd(DMA1_Stream6, ENABLE); /* Enables the specified DMA1 Stream6. */
return BufferSize;
}
#if defined(STM32F40_41xxx) || defined(STM32F427_437xx) || defined(STM32F429_439xx) || defined(STM32F469_479xx) || defined(STM32F446xx) || defined(STM32F412xG) || defined(STM32F413_423xx)
else if(USARTx == USART3)
{
if( (dmaTxFlag & 0x0004) != 0x0004 )
{
return NULL;
}
if(BufferSize > USART3_BufferSize_Tx)
{
return NULL;
}
if( (firstFlag & 0x0004) != 0x0004 )
{
firstFlag |= 0x0004;
}
else
{
while( DMA_GetFlagStatus(DMA1_Stream3, DMA_FLAG_TCIF3) == RESET );
}
memcpy(USART3_Buffer_Tx, Buffer, BufferSize); /* Copy memory */
DMA_ClearFlag(DMA1_Stream3, DMA_FLAG_TCIF3); /* Clears the DMA1 Stream3's pending flags. */
DMA_Cmd(DMA1_Stream3, DISABLE); /* Disables the specified DMA1 Stream3. */
while( DMA_GetCmdStatus(DMA1_Stream3) != DISABLE ); /* Wait for the specified DMA1 Stream3 disable to finish. */
DMA_SetCurrDataCounter(DMA1_Stream3, BufferSize); /* Writes the number of data units to be transferred on the DMA1 Stream3. */
DMA_Cmd(DMA1_Stream3, ENABLE); /* Enables the specified DMA1 Stream3. */
return BufferSize;
}
#endif /* STM32F40_41xxx || STM32F427_437xx || STM32F429_439xx || STM32F469_479xx || STM32F446xx || STM32F412xG || STM32F413_423xx */
#if defined(STM32F40_41xxx) || defined(STM32F427_437xx) || defined(STM32F429_439xx) || defined(STM32F469_479xx) || defined(STM32F446xx) || defined(STM32F413_423xx)
else if(USARTx == UART4)
{
if( (dmaTxFlag & 0x0008) != 0x0008 )
{
return NULL;
}
if(BufferSize > USART4_BufferSize_Tx)
{
return NULL;
}
if( (firstFlag & 0x0008) != 0x0008 )
{
firstFlag |= 0x0008;
}
else
{
while( DMA_GetFlagStatus(DMA1_Stream4, DMA_FLAG_TCIF4) == RESET );
}
memcpy(USART4_Buffer_Tx, Buffer, BufferSize); /* Copy memory */
DMA_ClearFlag(DMA1_Stream4, DMA_FLAG_TCIF4); /* Clears the DMA1 Stream4's pending flags. */
DMA_Cmd(DMA1_Stream4, DISABLE); /* Disables the specified DMA1 Stream4. */
while( DMA_GetCmdStatus(DMA1_Stream4) != DISABLE ); /* Wait for the specified DMA1 Stream4 disable to finish. */
DMA_SetCurrDataCounter(DMA1_Stream4, BufferSize); /* Writes the number of data units to be transferred on the DMA1 Stream4. */
DMA_Cmd(DMA1_Stream4, ENABLE); /* Enables the specified DMA1 Stream4. */
return BufferSize;
}
else if(USARTx == UART5)
{
if( (dmaTxFlag & 0x0010) != 0x0010 )
{
return NULL;
}
if(BufferSize > USART5_BufferSize_Tx)
{
return NULL;
}
if( (firstFlag & 0x0010) != 0x0010 )
{
firstFlag |= 0x0010;
}
else
{
while( DMA_GetFlagStatus(DMA1_Stream7, DMA_FLAG_TCIF7) == RESET );
}
memcpy(USART5_Buffer_Tx, Buffer, BufferSize); /* Copy memory */
DMA_ClearFlag(DMA1_Stream7, DMA_FLAG_TCIF7); /* Clears the DMA1 Stream7's pending flags. */
DMA_Cmd(DMA1_Stream7, DISABLE); /* Disables the specified DMA1 Stream7. */
while( DMA_GetCmdStatus(DMA1_Stream7) != DISABLE ); /* Wait for the specified DMA1 Stream7 disable to finish. */
DMA_SetCurrDataCounter(DMA1_Stream7, BufferSize); /* Writes the number of data units to be transferred on the DMA1 Stream7. */
DMA_Cmd(DMA1_Stream7, ENABLE); /* Enables the specified DMA1 Stream7. */
return BufferSize;
}
#endif /* STM32F40_41xxx || STM32F427_437xx || STM32F429_439xx || STM32F469_479xx || STM32F446xx || STM32F413_423xx */
else if(USARTx == USART6)
{
if( (dmaTxFlag & 0x0020) != 0x0020 )
{
return NULL;
}
if(BufferSize > USART6_BufferSize_Tx)
{
return NULL;
}
if( (firstFlag & 0x0020) != 0x0020 )
{
firstFlag |= 0x0020;
}
else
{
while( DMA_GetFlagStatus(DMA2_Stream6, DMA_FLAG_TCIF6) == RESET );
}
memcpy(USART6_Buffer_Tx, Buffer, BufferSize); /* Copy memory */
DMA_ClearFlag(DMA2_Stream6, DMA_FLAG_TCIF6); /* Clears the DMA2 Stream6's pending flags. */
DMA_Cmd(DMA2_Stream6, DISABLE); /* Disables the specified DMA2 Stream6. */
while( DMA_GetCmdStatus(DMA2_Stream6) != DISABLE ); /* Wait for the specified DMA2 Stream6 disable to finish. */
DMA_SetCurrDataCounter(DMA2_Stream6, BufferSize); /* Writes the number of data units to be transferred on the DMA2 Stream6. */
DMA_Cmd(DMA2_Stream6, ENABLE); /* Enables the specified DMA2 Stream6. */
return BufferSize;
}
#if defined(STM32F427_437xx) || defined(STM32F429_439xx) || defined(STM32F469_479xx) || defined(STM32F413_423xx)
else if(USARTx == UART7)
{
if( (dmaTxFlag & 0x0040) != 0x0040 )
{
return NULL;
}
if(BufferSize > USART7_BufferSize_Tx)
{
return NULL;
}
if( (firstFlag & 0x0040) != 0x0040 )
{
firstFlag |= 0x0040;
}
else
{
while( DMA_GetFlagStatus(DMA1_Stream1, DMA_FLAG_TCIF1) == RESET );
}
memcpy(USART7_Buffer_Tx, Buffer, BufferSize); /* Copy memory */
DMA_ClearFlag(DMA1_Stream1, DMA_FLAG_TCIF1); /* Clears the DMA1 Stream1's pending flags. */
DMA_Cmd(DMA1_Stream1, DISABLE); /* Disables the specified DMA1 Stream1. */
while( DMA_GetCmdStatus(DMA1_Stream1) != DISABLE ); /* Wait for the specified DMA1 Stream1 disable to finish. */
DMA_SetCurrDataCounter(DMA1_Stream1, BufferSize); /* Writes the number of data units to be transferred on the DMA1 Stream1. */
DMA_Cmd(DMA1_Stream1, ENABLE); /* Enables the specified DMA1 Stream1. */
return BufferSize;
}
else if(USARTx == UART8)
{
if( (dmaTxFlag & 0x0080) != 0x0080 )
{
return NULL;
}
if(BufferSize > USART8_BufferSize_Tx)
{
return NULL;
}
if( (firstFlag & 0x0080) != 0x0080 )
{
firstFlag |= 0x0080;
}
else
{
while( DMA_GetFlagStatus(DMA1_Stream0, DMA_FLAG_TCIF0) == RESET );
}
memcpy(USART8_Buffer_Tx, Buffer, BufferSize); /* Copy memory */
DMA_ClearFlag(DMA1_Stream0, DMA_FLAG_TCIF0); /* Clears the DMA1 Stream0's pending flags. */
DMA_Cmd(DMA1_Stream0, DISABLE); /* Disables the specified DMA1 Stream0. */
while( DMA_GetCmdStatus(DMA1_Stream0) != DISABLE ); /* Wait for the specified DMA1 Stream0 disable to finish. */
DMA_SetCurrDataCounter(DMA1_Stream0, BufferSize); /* Writes the number of data units to be transferred on the DMA1 Stream0. */
DMA_Cmd(DMA1_Stream0, ENABLE); /* Enables the specified DMA1 Stream0. */
return BufferSize;
}
#endif /* STM32F427_437xx || STM32F429_439xx || STM32F469_479xx || STM32F413_423xx */
#if defined(STM32F413_423xx)
else if(USARTx == UART9)
{
if( (dmaTxFlag & 0x0100) != 0x0100 )
{
return NULL;
}
if(BufferSize > USART9_BufferSize_Tx)
{
return NULL;
}
if( (firstFlag & 0x0100) != 0x0100 )
{
firstFlag |= 0x0100;
}
else
{
while( DMA_GetFlagStatus(DMA2_Stream0, DMA_FLAG_TCIF0) == RESET );
}
memcpy(USART9_Buffer_Tx, Buffer, BufferSize); /* Copy memory */
DMA_ClearFlag(DMA2_Stream0, DMA_FLAG_TCIF0); /* Clears the DMA2 Stream0's pending flags. */
DMA_Cmd(DMA2_Stream0, DISABLE); /* Disables the specified DMA2 Stream0. */
while( DMA_GetCmdStatus(DMA2_Stream0) != DISABLE ); /* Wait for the specified DMA2 Stream0 disable to finish. */
DMA_SetCurrDataCounter(DMA2_Stream0, BufferSize); /* Writes the number of data units to be transferred on the DMA2 Stream0. */
DMA_Cmd(DMA2_Stream0, ENABLE); /* Enables the specified DMA2 Stream0. */
return BufferSize;
}
else if(USARTx == UART10)
{
if( (dmaTxFlag & 0x0200) != 0x0200 )
{
return NULL;
}
if(BufferSize > USART10_BufferSize_Tx)
{
return NULL;
}
if( (firstFlag & 0x0200) != 0x0200 )
{
firstFlag |= 0x0200;
}
else
{
while( DMA_GetFlagStatus(DMA2_Stream7, DMA_FLAG_TCIF7) == RESET );
}
memcpy(USART10_Buffer_Tx, Buffer, BufferSize); /* Copy memory */
DMA_ClearFlag(DMA2_Stream7, DMA_FLAG_TCIF7); /* Clears the DMA2 Stream7's pending flags. */
DMA_Cmd(DMA2_Stream7, DISABLE); /* Disables the specified DMA2 Stream7. */
while( DMA_GetCmdStatus(DMA2_Stream7) != DISABLE ); /* Wait for the specified DMA2 Stream7 disable to finish. */
DMA_SetCurrDataCounter(DMA2_Stream7, BufferSize); /* Writes the number of data units to be transferred on the DMA2 Stream7. */
DMA_Cmd(DMA2_Stream7, ENABLE); /* Enables the specified DMA2 Stream7. */
return BufferSize;
}
#endif /* STM32F413_423xx */
return NULL;
}
/****************************************************************
* Function: USART_GetReceiveData
* Description: USART Get Receive Data.
* Input: USARTx
* Buffer
* BufferSize
* Output:
* Return: Receive Data Number
*****************************************************************/
uint16_t USART_GetReceiveData(USART_TypeDef* USARTx, void* Buffer, uint16_t BufferSize)
{
uint16_t number = NULL;
if(BufferSize == NULL)
{
return NULL;
}
if(USARTx == USART1)
{
if( (dmaRxFlag & 0x0001) != 0x0001 )
{
return NULL;
}
number = USART1_BufferSize_Rx - DMA_GetCurrDataCounter(DMA2_Stream2); /* Returns the number of remaining data units in the current DMA2 Stream2 transfer. */
if(number > BufferSize)
{
return NULL;
}
memcpy(Buffer, USART1_Buffer_Rx, number); /* Copy memory */
memset(USART1_Buffer_Rx, NULL, USART1_BufferSize_Rx); /* Empty memory */
DMA_Cmd(DMA2_Stream2, DISABLE); /* Disables the specified DMA2 Stream2. */
while( DMA_GetCmdStatus(DMA2_Stream2) != DISABLE ); /* Wait for the specified DMA2 Stream2 disable to finish. */
DMA_SetCurrDataCounter(DMA2_Stream2, USART1_BufferSize_Rx); /* Writes the number of data units to be transferred on the DMA2 Stream2. */
DMA_Cmd(DMA2_Stream2, ENABLE); /* Enables the specified DMA2 Stream2. */
}
else if(USARTx == USART2)
{
if( (dmaRxFlag & 0x0002) != 0x0002 )
{
return NULL;
}
number = USART2_BufferSize_Rx - DMA_GetCurrDataCounter(DMA1_Stream5); /* Returns the number of remaining data units in the current DMA1 Stream5 transfer. */
if(number > BufferSize)
{
return NULL;
}
memcpy(Buffer, USART2_Buffer_Rx, number); /* Copy memory */
memset(USART2_Buffer_Rx, NULL, USART2_BufferSize_Rx); /* Empty memory */
DMA_Cmd(DMA1_Stream5, DISABLE); /* Disables the specified DMA1 Stream5. */
while( DMA_GetCmdStatus(DMA1_Stream5) != DISABLE ); /* Wait for the specified DMA1 Stream5 disable to finish. */
DMA_SetCurrDataCounter(DMA1_Stream5, USART2_BufferSize_Rx); /* Writes the number of data units to be transferred on the DMA1 Stream5. */
DMA_Cmd(DMA1_Stream5, ENABLE); /* Enables the specified DMA1 Stream5. */
}
#if defined(STM32F40_41xxx) || defined(STM32F427_437xx) || defined(STM32F429_439xx) || defined(STM32F469_479xx) || defined(STM32F446xx) || defined(STM32F412xG) || defined(STM32F413_423xx)
else if(USARTx == USART3)
{
if( (dmaRxFlag & 0x0004) != 0x0004 )
{
return NULL;
}
number = USART3_BufferSize_Rx - DMA_GetCurrDataCounter(DMA1_Stream1); /* Returns the number of remaining data units in the current DMA1 Stream1 transfer. */
if(number > BufferSize)
{
return NULL;
}
memcpy(Buffer, USART3_Buffer_Rx, number); /* Copy memory */
memset(USART3_Buffer_Rx, NULL, USART3_BufferSize_Rx); /* Empty memory */
DMA_Cmd(DMA1_Stream1, DISABLE); /* Disables the specified DMA1 Stream1. */
while( DMA_GetCmdStatus(DMA1_Stream1) != DISABLE ); /* Wait for the specified DMA1 Stream1 disable to finish. */
DMA_SetCurrDataCounter(DMA1_Stream1, USART3_BufferSize_Rx); /* Writes the number of data units to be transferred on the DMA1 Stream1. */
DMA_Cmd(DMA1_Stream1, ENABLE); /* Enables the specified DMA1 Stream1. */
}
#endif /* STM32F40_41xxx || STM32F427_437xx || STM32F429_439xx || STM32F469_479xx || STM32F446xx || STM32F412xG || STM32F413_423xx */
#if defined(STM32F40_41xxx) || defined(STM32F427_437xx) || defined(STM32F429_439xx) || defined(STM32F469_479xx) || defined(STM32F446xx) || defined(STM32F413_423xx)
else if(USARTx == UART4)
{
if( (dmaRxFlag & 0x0008) != 0x0008 )
{
return NULL;
}
number = USART4_BufferSize_Rx - DMA_GetCurrDataCounter(DMA1_Stream2); /* Returns the number of remaining data units in the current DMA1 Stream2 transfer. */
if(number > BufferSize)
{
return NULL;
}
memcpy(Buffer, USART4_Buffer_Rx, number); /* Copy memory */
memset(USART4_Buffer_Rx, NULL, USART4_BufferSize_Rx); /* Empty memory */
DMA_Cmd(DMA1_Stream2, DISABLE); /* Disables the specified DMA1 Stream2. */
while( DMA_GetCmdStatus(DMA1_Stream2) != DISABLE ); /* Wait for the specified DMA1 Stream2 disable to finish. */
DMA_SetCurrDataCounter(DMA1_Stream2, USART4_BufferSize_Rx); /* Writes the number of data units to be transferred on the DMA1 Stream2. */
DMA_Cmd(DMA1_Stream2, ENABLE); /* Enables the specified DMA1 Stream2. */
}
else if(USARTx == UART5)
{
if( (dmaRxFlag & 0x0010) != 0x0010 )
{
return NULL;
}
number = USART5_BufferSize_Rx - DMA_GetCurrDataCounter(DMA1_Stream0); /* Returns the number of remaining data units in the current DMA1 Stream0 transfer. */
if(number > BufferSize)
{
return NULL;
}
memcpy(Buffer, USART5_Buffer_Rx, number); /* Copy memory */
memset(USART5_Buffer_Rx, NULL, USART5_BufferSize_Rx); /* Empty memory */
DMA_Cmd(DMA1_Stream0, DISABLE); /* Disables the specified DMA1 Stream0. */
while( DMA_GetCmdStatus(DMA1_Stream0) != DISABLE ); /* Wait for the specified DMA1 Stream0 disable to finish. */
DMA_SetCurrDataCounter(DMA1_Stream0, USART5_BufferSize_Rx); /* Writes the number of data units to be transferred on the DMA1 Stream0. */
DMA_Cmd(DMA1_Stream0, ENABLE); /* Enables the specified DMA1 Stream0. */
}
#endif /* STM32F40_41xxx || STM32F427_437xx || STM32F429_439xx || STM32F469_479xx || STM32F446xx || STM32F413_423xx */
else if(USARTx == USART6)
{
if( (dmaRxFlag & 0x0020) != 0x0020 )
{
return NULL;
}
number = USART6_BufferSize_Rx - DMA_GetCurrDataCounter(DMA2_Stream1); /* Returns the number of remaining data units in the current DMA2 Stream1 transfer. */
if(number > BufferSize)
{
return NULL;
}
memcpy(Buffer, USART6_Buffer_Rx, number); /* Copy memory */
memset(USART6_Buffer_Rx, NULL, USART6_BufferSize_Rx); /* Empty memory */
DMA_Cmd(DMA2_Stream1, DISABLE); /* Disables the specified DMA2 Stream1. */
while( DMA_GetCmdStatus(DMA2_Stream1) != DISABLE ); /* Wait for the specified DMA2 Stream1 disable to finish. */
DMA_SetCurrDataCounter(DMA2_Stream1, USART6_BufferSize_Rx); /* Writes the number of data units to be transferred on the DMA2 Stream1. */
DMA_Cmd(DMA2_Stream1, ENABLE); /* Enables the specified DMA2 Stream1. */
}
#if defined(STM32F427_437xx) || defined(STM32F429_439xx) || defined(STM32F469_479xx) || defined(STM32F413_423xx)
else if(USARTx == UART7)
{
if( (dmaRxFlag & 0x0040) != 0x0040 )
{
return NULL;
}
number = USART7_BufferSize_Rx - DMA_GetCurrDataCounter(DMA1_Stream3); /* Returns the number of remaining data units in the current DMA1 Stream3 transfer. */
if(number > BufferSize)
{
return NULL;
}
memcpy(Buffer, USART7_Buffer_Rx, number); /* Copy memory */
memset(USART7_Buffer_Rx, NULL, USART7_BufferSize_Rx); /* Empty memory */
DMA_Cmd(DMA1_Stream3, DISABLE); /* Disables the specified DMA1 Stream3. */
while( DMA_GetCmdStatus(DMA1_Stream3) != DISABLE ); /* Wait for the specified DMA1 Stream3 disable to finish. */
DMA_SetCurrDataCounter(DMA1_Stream3, USART7_BufferSize_Rx); /* Writes the number of data units to be transferred on the DMA1 Stream3. */
DMA_Cmd(DMA1_Stream3, ENABLE); /* Enables the specified DMA1 Stream3. */
}
else if(USARTx == UART8)
{
if( (dmaRxFlag & 0x0080) != 0x0080 )
{
return NULL;
}
number = USART8_BufferSize_Rx - DMA_GetCurrDataCounter(DMA1_Stream6); /* Returns the number of remaining data units in the current DMA1 Stream6 transfer. */
if(number > BufferSize)
{
return NULL;
}
memcpy(Buffer, USART8_Buffer_Rx, number); /* Copy memory */
memset(USART8_Buffer_Rx, NULL, USART8_BufferSize_Rx); /* Empty memory */
DMA_Cmd(DMA1_Stream6, DISABLE); /* Disables the specified DMA1 Stream6. */
while( DMA_GetCmdStatus(DMA1_Stream6) != DISABLE ); /* Wait for the specified DMA1 Stream6 disable to finish. */
DMA_SetCurrDataCounter(DMA1_Stream6, USART8_BufferSize_Rx); /* Writes the number of data units to be transferred on the DMA1 Stream6. */
DMA_Cmd(DMA1_Stream6, ENABLE); /* Enables the specified DMA1 Stream6. */
}
#endif /* STM32F427_437xx || STM32F429_439xx || STM32F469_479xx || STM32F413_423xx */
#if defined(STM32F413_423xx)
else if(USARTx == UART9)
{
if( (dmaRxFlag & 0x0100) != 0x0100 )
{
return NULL;
}
number = USART9_BufferSize_Rx - DMA_GetCurrDataCounter(DMA2_Stream7); /* Returns the number of remaining data units in the current DMA2 Stream7 transfer. */
if(number > BufferSize)
{
return NULL;
}
memcpy(Buffer, USART9_Buffer_Rx, number); /* Copy memory */
memset(USART9_Buffer_Rx, NULL, USART9_BufferSize_Rx); /* Empty memory */
DMA_Cmd(DMA2_Stream7, DISABLE); /* Disables the specified DMA2 Stream7. */
while( DMA_GetCmdStatus(DMA2_Stream7) != DISABLE ); /* Wait for the specified DMA2 Stream7 disable to finish. */
DMA_SetCurrDataCounter(DMA2_Stream7, USART9_BufferSize_Rx); /* Writes the number of data units to be transferred on the DMA2 Stream7. */
DMA_Cmd(DMA2_Stream7, ENABLE); /* Enables the specified DMA2 Stream7. */
}
else if(USARTx == UART10)
{
if( (dmaRxFlag & 0x0200) != 0x0200 )
{
return NULL;
}
number = USART10_BufferSize_Rx - DMA_GetCurrDataCounter(DMA2_Stream0); /* Returns the number of remaining data units in the current DMA2 Stream0 transfer. */
if(number > BufferSize)
{
return NULL;
}
memcpy(Buffer, USART10_Buffer_Rx, number); /* Copy memory */
memset(USART10_Buffer_Rx, NULL, USART10_BufferSize_Rx); /* Empty memory */
DMA_Cmd(DMA2_Stream0, DISABLE); /* Disables the specified DMA2 Stream0. */
while( DMA_GetCmdStatus(DMA2_Stream0) != DISABLE ); /* Writes the number of data units to be transferred on the DMA2 Stream0. */
DMA_SetCurrDataCounter(DMA2_Stream0, USART10_BufferSize_Rx); /* Writes the number of data units to be transferred on the DMA2 Stream0. */
DMA_Cmd(DMA2_Stream0, ENABLE); /* Enables the specified DMA2 Stream0. */
}
#endif /* STM32F413_423xx */
return number;
}
3，例程
main.h文件
/****************************************************************
* Copyright (C) 2016, XinLi, all right reserved.
* File name: main.h
* Date: 2016.03.22
* Description: USART Example.
*****************************************************************/
#ifndef __MAIN_H
#define __MAIN_H
/****************************************************************
* Header include
*****************************************************************/
#include "stm32f4xx.h"
/****************************************************************
* Macro definition
*****************************************************************/
/****************************************************************
* Type definition
*****************************************************************/
/****************************************************************
* Structure definition
*****************************************************************/
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
/****************************************************************
* Variable declaration
*****************************************************************/
/****************************************************************
* Function declaration
*****************************************************************/
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* __MAIN_H */
main.c文件
/****************************************************************
* Copyright (C) 2016, XinLi, all right reserved.
* File name: main.c
* Date: 2016.03.22
* Description: USART Example.
*****************************************************************/
/****************************************************************
* Header include
*****************************************************************/
#include "main.h"
#include "USART.h"
/****************************************************************
* Global variables
*****************************************************************/
/****************************************************************
* Function declaration
*****************************************************************/
static void System_Init(void);
static void NVIC_Configuration(void);
/****************************************************************
* Function definition
*****************************************************************/
/****************************************************************
* Function: main
* Description: Program entry.
* Input:
* Output:
* Return:
*****************************************************************/
int main(void)
{
System_Init();
for(;;)
{
}
}
/****************************************************************
* Function: System_Init
* Description: Initialization System.
* Input:
* Output:
* Return:
*****************************************************************/
static void System_Init(void)
{
USART_Configuration(USART1, BAUD_RATE_115200, USART_IT_IDLE, 100, 100);
NVIC_Configuration();
}
/****************************************************************
* Function: NVIC_Configuration
* Description: Interrupt Vector Table Configuration.
* Input:
* Output:
* Return:
*****************************************************************/
static void NVIC_Configuration(void)
{
NVIC_InitTypeDef NVIC_InitStructure;
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_0);
NVIC_InitStructure.NVIC_IRQChannel = USART1_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0x00;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0x00;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
}
中断服务程序
/**
* @brief This function handles USART1 Handler.
* @param None
* @retval None
*/
void USART1_IRQHandler(void)
{
uint16_t num;
uint8_t buff[100];
if(USART_GetITStatus(USART1, USART_IT_IDLE) != RESET)
{
USART1->DR;
USART1->SR;
num = USART_GetReceiveData(USART1, buff, sizeof(buff));
USART_SetSendData(USART1, buff, num);
USART_ClearITPendingBit(USART1, USART_IT_IDLE);
}
}
修改硬件接口（根据自己的板子进行修改）
修改堆空间大小（根据初始化的缓存区大小进行修改）
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硬件架构艺术：数字电路的设计方法与技术
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