乒乓缓存，一个礼拜了没弄出来都，大神啊@来吧@

76149437@qq.com · 发表于 2013-7-2 19:52:47

int main(void)
{
USART1_Config();
  #ifdef debug
   printf("\r\n 串口初始化成功！ \r\n");
  #endif
    SysTick_Init();
  #ifdef debug
   printf("\r\n 滴答定时初始化成功！ \r\n");
  #endif
/* 配置串口1为：115200 8-N-1 */
LED_GPIO_Config();
  #ifdef debug
   printf("\r\n LED初始化成功！ \r\n");
  #endif
/* 2M串行flash W25X16初始化 */
NVIC_Configuration();
SPI_FLASH_Init();
  #ifdef debug
   printf("\r\n SPI—flash初始化成功！ \r\n");
  #endif
ADC1_Init();
  #ifdef debug
   printf("\r\n ADC初始化成功！ \r\n");
  #endif

/* Get SPI Flash Device ID */
DeviceID = SPI_FLASH_ReadDeviceID();
free_buf_no==BUF_NO1;

while(1)
  {
   while(writestatus == WRITE)
    {
     writestatus = UNWRITE;
     LED1( ON );
     Delay(0xffffff);
     LED1( OFF );
     Delay(0xffffff);
     CurrDataCount = DMA_GetCurrDataCounter(DMA1_Channel1);

    }
   }
}

void DMA1_Channel1_IRQHandler(void)
{

   if(DMA_GetITStatus(DMA1_IT_TC1));
   {
        DMA_ClearITPendingBit(DMA1_IT_TC1);
   DMA_ClearFlag(DMA1_FLAG_TC1);
      DMA_ITConfig(DMA1_Channel1, DMA_IT_TC, DISABLE);//关中断
     if(free_buf_no==BUF_NO1)
          {
                DMA_InitStructure.DMA_MemoryBaseAddr = (uint32_t)DMA_Buf1[0];
               DMA_Init(DMA1_Channel1, &DMA_InitStructure);
            free_buf_no=BUF_NO2;
         LED3( ON );
                  Delay(0xffffff);
         LED3( OFF );
          }
          else
            {
                  DMA_InitStructure.DMA_MemoryBaseAddr = (uint32_t)DMA_Buf2[0];
               DMA_Init(DMA1_Channel1, &DMA_InitStructure);
         free_buf_no=BUF_NO1;
         LED2( ON );
         Delay(0xffffff);
         LED2( OFF );
            }

   writestatus = WRITE;
   DMA_ITConfig(DMA1_Channel1, DMA_IT_TC, ENABLE);//开中断

      }
}

void USART1_IRQHandler(void)
{
    if(USART_GetITStatus(USART1, USART_IT_RXNE) != RESET)    //若接收数据寄存器满
         {
             USART_ClearFlag(USART1, USART_FLAG_RXNE);// 清标志
       USART_ClearITPendingBit(USART1, USART_IT_RXNE);
             switch(USART_ReceiveData(USART1))
       {

                case 0xff:
         DMA_Cmd(DMA1_Channel1, ENABLE);
         /* Enable ADC1 DMA */
         ADC_DMACmd(ADC1, ENABLE);
         /* Enable ADC1 */

         DMA_ITConfig(DMA1_Channel1, DMA_IT_TC, ENABLE);//开中断
         ADC_SoftwareStartConvCmd(ADC1, ENABLE);
         break;

      case 0xfe:
         ADC_SoftwareStartConvCmd(ADC1, DISABLE);
         ADC_Cmd(ADC1, DISABLE);
         DMA_ClearITPendingBit(DMA1_IT_GL1);
         LED1( OFF );
         break;

      default:
         LED2( OFF );
         LED1( OFF );
         break;
       }
         }
}
static void ADC1_GPIO_Config(void)
{
GPIO_InitTypeDef GPIO_InitStructure;

/* Enable DMA clock */
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA1, ENABLE);

/* Enable ADC1 and GPIOC clock */
RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1 | RCC_APB2Periph_GPIOC, ENABLE);

/* Configure PC.01 as analog input */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_1;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN;
GPIO_Init(GPIOC, &GPIO_InitStructure);    // PC1,输入时不用设置速率
}

/* 函数名：ADC1_Mode_Config
* 描述：配置ADC1的工作模式为MDA模式
* 输入 : 无
* 输出：无
* 调用：内部调用
*/
static void ADC1_Mode_Config(void)
{
DMA_InitTypeDef DMA_InitStructure;
ADC_InitTypeDef ADC_InitStructure;

/* DMA channel1 configuration */
DMA_DeInit(DMA1_Channel1);
DMA_InitStructure.DMA_PeripheralBaseAddr = ADC1_DR_Address; //ADC地址
DMA_InitStructure.DMA_MemoryBaseAddr = (u32)DMA_Buf2[0];//内存地址
DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralSRC;
DMA_InitStructure.DMA_BufferSize = (RAMSIZE+1);
DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;//外设地址固定
DMA_InitStructure.DMA_MemoryInc = DMA_PeripheralInc_Enable; //内存地址递增
DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_HalfWord; //半字
DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_HalfWord;
DMA_InitStructure.DMA_Mode = DMA_Mode_Circular; //循环传输
DMA_InitStructure.DMA_Priority = DMA_Priority_High;
DMA_InitStructure.DMA_M2M = DMA_M2M_Disable;
DMA_Init(DMA1_Channel1, &DMA_InitStructure);

/* Enable DMA channel1 */

/* ADC1 configuration */

ADC_InitStructure.ADC_Mode = ADC_Mode_Independent; //独立ADC模式
ADC_InitStructure.ADC_ScanConvMode = DISABLE ; //禁止扫描模式，扫描模式用于多通道采集
ADC_InitStructure.ADC_ContinuousConvMode = ENABLE; //开启连续转换模式，即不停地进行ADC转换
ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_None; //不使用外部触发转换
ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right; //采集数据右对齐
ADC_InitStructure.ADC_NbrOfChannel = 1; //要转换的通道数目1
ADC_Init(ADC1, &ADC_InitStructure);

/*配置ADC时钟，为PCLK2的8分频，即9Hz*/
RCC_ADCCLKConfig(RCC_PCLK2_Div8);
/*配置ADC1的通道11为55. 5个采样周期，序列为1 */
ADC_RegularChannelConfig(ADC1, ADC_Channel_11, 1, ADC_SampleTime_55Cycles5);

ADC_Cmd(ADC1, ENABLE);

/*复位校准寄存器 */
ADC_ResetCalibration(ADC1);
/*等待校准寄存器复位完成 */
while(ADC_GetResetCalibrationStatus(ADC1));

/* ADC校准 */
ADC_StartCalibration(ADC1);
/* 等待校准完成*/
while(ADC_GetCalibrationStatus(ADC1));

/* 由于没有采用外部触发，所以使用软件触发ADC转换 */

}

/*
* 函数名：ADC1_Init
* 描述：无
* 输入：无
* 输出：无
* 调用：外部调用
*/
void ADC1_Init(void)
{
ADC1_GPIO_Config();
ADC1_Mode_Config();
}
成功的话应该是LED3亮灭 LED1亮灭 LED2亮灭 LED1亮灭这样一直循环下去。但事实上是LED3 亮灭 LED2亮灭 LED1亮灭然后就不动了，实在找不到问题在哪，求大神帮忙我调试了一星期了