配置DMA读一个数据连续的然后配置的就有问题不知道错在哪里

m7剑指南山 · 发表于 2016-5-5 17:56:42

#include "bsp_transmission.h"
#include "bsp_usart.h"
#include <stdio.h>
__IO uint16_t ReceiveBufffer[4] = {0};
void DMA_MODE_Config(void)
{
/*DMA´«ÊäÊý¾ÝÁ÷1Í¨dao 4 USART_RX*/
DMA_InitTypeDef DMA_InitStructure;//µÚÒ»²½¶¨ÒåÒ»¸öDMAµÄ½á¹¹Ìå·½±ãÅäÖÃDMA
RCC_AHB1PeriphResetCmd(RCC_AHB1Periph_DMA1,ENABLE); //¿ªÆôDMA2Ê±ÖÓ
DMA_DeInit(DMA1_Stream4);
while(DMA_GetCmdStatus(DMA1_Stream4) != DISABLE) {}
printf("ÐÄÈûÈû 1");
DMA_InitStructure.DMA_Channel =DMA_Channel_4;//STM32Êý¾ÝÊÖ²á¿ÉÒÔÖªµÀDMA2µÄTXÍ¨µÀ4Êý¾ÝÁ÷7
DMA_InitStructure.DMA_PeripheralBaseAddr = USART_DR_BASE;//DMA´«ÊäµÄµØÖ·Èë¿Ú
DMA_InitStructure.DMA_Memory0BaseAddr = (uint32_t)ReceiveBufffer;//½«ËûËÍÈëÁËÒ»¸öÊý×é¡£ÊÇ²»ÊÇÒ²¿ÉÒÔ»»¸öµØ·½´©³öÀ´¡£ÊµÑé¡£
DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralToMemory;//·½Ïò´ÓÄÚ´æµ½ÍâÉè
DMA_InitStructure.DMA_BufferSize = 4;//Òª·¢ËÍµÄÊý¾ÝÁ¿
DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable; //ÍâÉèµØÖ·²»Ôö¼Ó¡£Ò»Ö±´ÓUSART1ÖÐ½øÐÐÊä³ö
DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Disable; //ÄÚ´æµØÖ·×ÔÔö¼Ó
DMA_InitStructure.DMA_PeripheralDataSize=DMA_PeripheralDataSize_HalfWord;
DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_HalfWord; //ÍâÉèµØÖ·ÄÚ´æÊý¾Ýµ¥Î»¶¼ÊÇÒ»¸ö×Ö½Ú
DMA_InitStructure.DMA_Mode = DMA_Mode_Normal; //²»¶ÏÑ»·Ä£Ê½¡£
DMA_InitStructure.DMA_Priority = DMA_Priority_Medium; //´«ÊäÓÅÏÈ¼¶±ð¡£
DMA_InitStructure.DMA_FIFOMode = DMA_FIFOMode_Disable;
DMA_InitStructure.DMA_FIFOThreshold = DMA_FIFOThreshold_Full; //½ûÓÃFIFO
DMA_InitStructure.DMA_MemoryBurst = DMA_MemoryBurst_Single; //´æ´¢Æ÷Í»·¢´«ÊäÒ»¸ö½ÚÅÄ
DMA_InitStructure.DMA_PeripheralBurst = DMA_PeripheralBurst_Single; //ÍâÉèÍ»·¢´«ÊäÒ»¸ö½ÚÅÄ
DMA_Init(DMA1_Stream4, &DMA_InitStructure);
DMA_Cmd(DMA1_Stream4, ENABLE);
printf("ÐÄÈûÈû 2");
while (DMA_GetCmdStatus(DMA1_Stream4) != ENABLE);//µÈ´ýÓÐÐ§¡£
printf("ÐÄÈûÈû 3");
}
void USART_GPIO_Config(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
USART_InitTypeDef USART_InitStructure;
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOB,ENABLE);//pb11 rx pb10 tx
RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART3,ENABLE);
GPIO_PinAFConfig(GPIOC,GPIO_PinSource11,GPIO_AF_USART3);
GPIO_InitStructure.GPIO_Pin =GPIO_Pin_11;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Fast_Speed;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
GPIO_Init(GPIOB,&GPIO_InitStructure);
/**
* Í¨ÐÅ¸ñÊ½
* 1¸öÆðÊ¼Î» 8¸öÊý¾ÝÎ» 1¸öÍ£Ö¹Î» ÎÞÐ£ÑéÎ»
**/
USART_InitStructure.USART_BaudRate = 9600;
USART_InitStructure.USART_WordLength = USART_WordLength_8b;//Ò»¸öÆðÊ¼Î»
USART_InitStructure.USART_StopBits = USART_StopBits_1;
USART_InitStructure.USART_Parity = USART_Parity_No;
USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;;
USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;//²»Ê¹ÓÃÓ²¼þÁ÷¿ØÖÆ!!
USART_Init(USART3,&USART_InitStructure);
USART_ITConfig(USART3,USART_IT_RXNE,ENABLE);
USART_Cmd(USART3,ENABLE);
}

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#ifndef _TRANSMISSION_H
#define _TRANSMISSION_H
#include "stm32f4xx.h"
#define rBuffer 4
#define tBuffer 4
#define USART_DR_BASE (USART3_BASE+0x04)
void USART_GPIO_Config(void);
void DMA_MODE_Config(void);
#endif //_TRANSMISSION_H

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这个是DMA的配置以及.h文件

/**
******************************************************************************
* @file main.c
* @author WHY
* @version V1.0
* @date 2016-05-4
* @brief ÓÃ1.5.1°æ±¾¿â½¨µÄ¹¤³ÌÄ£°å
******************************************************************************
* @attention
*
*
******************************************************************************
*/
#include "stm32f4xx.h"
#include "bsp_usart.h"
#include "bsp_transmission.h"
#include <stdio.h>
void Delay(__IO uint32_t nCount);
extern __IO uint16_t ReceiveBufffer[4];
uint16_t rxsaveBufffer;
/**
* @brief Ö÷º¯Êý
* @param ÎÞ
* @retval ÎÞ
*/
int main(void)
{
// int i = 0;
Debug_USART_Config();//这个主要是测试的就是printf这个函数PA9TX PA10RX_PWM2 PWM3 PA9TX_PWM2
NVIC_Configuration();
printf("³õÊ¼»¯¿ªÊ¼\n");
USART_GPIO_Config();
DMA_MODE_Config();
printf("DMAÍ¨ÐÅ³õÊ¼\n");
USART_DMACmd(USART3,USART_DMAReq_Rx, ENABLE);
while(1)
{
}
}
void Delay(__IO uint32_t nCount)
{
for(; nCount != 0; nCount--);
}
/*********************************************END OF FILE**********************/

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一直找不到错误在哪里。求大神帮忙呀

m7剑指南山 · 发表于 2016-5-5 17:58:29

怎么都是乱码了。。

m7剑指南山 · 发表于 2016-5-5 18:00:22

[code]int main(void)
{
      // int i = 0;
      Debug_USART_Config；
         NVIC_Configuration();
      USART_GPIO_Config();
         DMA_MODE_Config();
   USART_DMACmd(USART3,USART_DMAReq_Rx, ENABLE);




       while(1)
   {

}
}

m7剑指南山 · 发表于 2016-5-5 18:02:58

<p>#include "bsp_transmission.h"
#include "bsp_usart.h"
#include <stdio.h>
__IO uint16_t ReceiveBufffer[4] = {0};
void DMA_MODE_Config(void)
{
DMA_InitTypeDef DMA_InitStructure;
RCC_AHB1PeriphResetCmd(RCC_AHB1Periph_DMA1,ENABLE);
DMA_DeInit(DMA1_Stream4);
while(DMA_GetCmdStatus(DMA1_Stream4) != DISABLE) {}</p><p>
DMA_InitStructure.DMA_Channel =DMA_Channel_4;
DMA_InitStructure.DMA_PeripheralBaseAddr = USART_DR_BASE;
DMA_InitStructure.DMA_Memory0BaseAddr = (uint32_t)ReceiveBufffer;
DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralToMemory;
DMA_InitStructure.DMA_BufferSize = 4;
DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Disable;
DMA_InitStructure.DMA_PeripheralDataSize=DMA_PeripheralDataSize_HalfWord;
DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_HalfWord;
DMA_InitStructure.DMA_Mode = DMA_Mode_Normal;
DMA_InitStructure.DMA_Priority = DMA_Priority_Medium;
DMA_InitStructure.DMA_FIFOMode = DMA_FIFOMode_Disable;
DMA_InitStructure.DMA_FIFOThreshold = DMA_FIFOThreshold_Full;
DMA_InitStructure.DMA_MemoryBurst = DMA_MemoryBurst_Single;
DMA_InitStructure.DMA_PeripheralBurst = DMA_PeripheralBurst_Single;
DMA_Init(DMA1_Stream4, &DMA_InitStructure);
DMA_Cmd(DMA1_Stream4, ENABLE);
while (DMA_GetCmdStatus(DMA1_Stream4) != ENABLE);
}
void USART_GPIO_Config(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
USART_InitTypeDef USART_InitStructure;
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOB,ENABLE);//pb11 rx pb10 tx
RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART3,ENABLE);
GPIO_PinAFConfig(GPIOC,GPIO_PinSource11,GPIO_AF_USART3);
GPIO_InitStructure.GPIO_Pin =GPIO_Pin_11;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Fast_Speed;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
GPIO_Init(GPIOB,&GPIO_InitStructure);
/**
* Í¨ÐÅ¸ñÊ½
* 1¸öÆðÊ¼Î» 8¸öÊý¾ÝÎ» 1¸öÍ£Ö¹Î» ÎÞÐ£ÑéÎ»
**/
USART_InitStructure.USART_BaudRate = 9600;
USART_InitStructure.USART_WordLength = USART_WordLength_8b;//Ò»¸öÆðÊ¼Î»
USART_InitStructure.USART_StopBits = USART_StopBits_1;
USART_InitStructure.USART_Parity = USART_Parity_No;
USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;;
USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;//²»Ê¹ÓÃÓ²¼þÁ÷¿ØÖÆ!!
USART_Init(USART3,&USART_InitStructure);
USART_ITConfig(USART3,USART_IT_RXNE,ENABLE);
USART_Cmd(USART3,ENABLE);
}
</p>

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配置DMA读一个数据连续的然后配置的就有问题不知道错在哪里

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