STM32F407 I2S DMA 数据收不到 程序如下，牛人请看一下

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__IO uint32_t  I2S_RX_buffer[1024]={0x00};
__IO uint32_t RX_XferCplt=0;
/* Mask for the bit EN of the I2S CFGR register */
#define I2S_ENABLE_MASK                 0x0400
/* Delay for the Codec to be correctly reset */
#define CODEC_RESET_DELAY               0x4FFF
/* Codec audio Standards */
#ifdef I2S_STANDARD_PHILLIPS
 #define  CODEC_STANDARD                0x04
 #define I2S_STANDARD                   I2S_Standard_Phillips        
#elif defined(I2S_STANDARD_MSB)
 #define  CODEC_STANDARD                0x00
 #define I2S_STANDARD                   I2S_Standard_MSB   
#elif defined(I2S_STANDARD_LSB)
 #define  CODEC_STANDARD                0x08
 #define I2S_STANDARD                   I2S_Standard_LSB   
#else
 #error "Error: No audio communication standard selected !"
#endif /* I2S_STANDARD */
#define CODEC_I2S                      SPI3
#define I2Sxext                        I2S3ext
#define CODEC_I2S_CLK                  RCC_APB1Periph_SPI3
#define CODEC_I2S_ADDRESS              0x40003C0C
#define CODEC_I2S_GPIO_AF              GPIO_AF_SPI3
#define CODEC_I2S_IRQ                  SPI3_IRQn
#define CODEC_I2S_GPIO_CLOCK           (RCC_AHB1Periph_GPIOC | RCC_AHB1Periph_GPIOA)
#define CODEC_I2S_WS_PIN               GPIO_Pin_4
#define CODEC_I2S_SCK_PIN              GPIO_Pin_10
#define CODEC_I2S_SD_PIN               GPIO_Pin_12
#define CODEC_I2S_SI_PIN               GPIO_Pin_11
#define CODEC_I2S_MCK_PIN              GPIO_Pin_7
#define CODEC_I2S_WS_PINSRC            GPIO_PinSource4
#define CODEC_I2S_SCK_PINSRC           GPIO_PinSource10
#define CODEC_I2S_SD_PINSRC            GPIO_PinSource12
#define CODEC_I2S_SI_PINSRC            GPIO_PinSource11
#define CODEC_I2S_MCK_PINSRC           GPIO_PinSource7
#define CODEC_I2S_GPIO                 GPIOC
#define CODEC_I2S_WS_GPIO              GPIOA
#define CODEC_I2S_MCK_GPIO             GPIOC
#define Audio_I2S_IRQHandler           SPI3_IRQHandler
 /* I2S DMA Stream definitions */
 #define AUDIO_I2S_DMA_CLOCK            RCC_AHB1Periph_DMA1
 #define AUDIO_I2S_DMA_STREAM           DMA1_Stream5
 #define AUDIO_I2S_DMA_DREG             CODEC_I2S_ADDRESS
 #define AUDIO_I2S_DMA_CHANNEL          DMA_Channel_0
 #define AUDIO_I2S_DMA_IRQ              DMA1_Stream5_IRQn
 #define AUDIO_I2S_DMA_FLAG_TC          DMA_FLAG_TCIF5
 #define AUDIO_I2S_DMA_FLAG_HT          DMA_FLAG_HTIF5
 #define AUDIO_I2S_DMA_FLAG_FE          DMA_FLAG_FEIF5
 #define AUDIO_I2S_DMA_FLAG_TE          DMA_FLAG_TEIF5
 #define AUDIO_I2S_DMA_FLAG_DME         DMA_FLAG_DMEIF5
 #define Audio_MAL_I2S_IRQHandler       DMA1_Stream5_IRQHandler
 /* I2S DMA RX Stream definitions */
 #define AUDIO_I2S_DMA_RX_CLOCK            RCC_AHB1Periph_DMA1
 #define AUDIO_I2S_DMA_RX_STREAM           DMA1_Stream0
 #define AUDIO_I2S_DMA_RX_DREG             CODEC_I2S_ADDRESS
 #define AUDIO_I2S_DMA_RX_CHANNEL          DMA_Channel_3
 #define AUDIO_I2S_DMA_RX_IRQ              DMA1_Stream0_IRQn
 #define AUDIO_I2S_DMA_RX_FLAG_TC          DMA_FLAG_TCIF0
static void Codec_GPIO_Init(void)
{
  GPIO_InitTypeDef GPIO_InitStructure;
 
  /* Enable Reset GPIO Clock */
  RCC_AHB1PeriphClockCmd(AUDIO_RESET_GPIO_CLK,ENABLE);
 
  /* Audio reset pin configuration -------------------------------------------------*/
  GPIO_InitStructure.GPIO_Pin = AUDIO_RESET_PIN;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT;
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
  GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
  GPIO_InitStructure.GPIO_PuPd  = GPIO_PuPd_NOPULL;
  GPIO_Init(AUDIO_RESET_GPIO, &GPIO_InitStructure);   
 
  /* Enable I2S and I2C GPIO clocks */
  RCC_AHB1PeriphClockCmd(CODEC_I2C_GPIO_CLOCK | CODEC_I2S_GPIO_CLOCK, ENABLE);
  /* CODEC_I2C SCL and SDA pins configuration -------------------------------------*/
  GPIO_InitStructure.GPIO_Pin = CODEC_I2C_SCL_PIN | CODEC_I2C_SDA_PIN;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
  GPIO_InitStructure.GPIO_OType = GPIO_OType_OD;
  GPIO_InitStructure.GPIO_PuPd  = GPIO_PuPd_NOPULL;
  GPIO_Init(CODEC_I2C_GPIO, &GPIO_InitStructure);    
  /* Connect pins to I2C peripheral */
  GPIO_PinAFConfig(CODEC_I2C_GPIO, CODEC_I2S_SCL_PINSRC, CODEC_I2C_GPIO_AF); 
  GPIO_PinAFConfig(CODEC_I2C_GPIO, CODEC_I2S_SDA_PINSRC, CODEC_I2C_GPIO_AF); 
  /* CODEC_I2S pins configuration: WS, SCK and SD pins -----------------------------*/
  GPIO_InitStructure.GPIO_Pin = CODEC_I2S_SCK_PIN | CODEC_I2S_SD_PIN|CODEC_I2S_SI_PIN;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
  GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
  GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
  GPIO_Init(CODEC_I2S_GPIO, &GPIO_InitStructure);
  GPIO_PinAFConfig(CODEC_I2S_GPIO, CODEC_I2S_SCK_PINSRC, CODEC_I2S_GPIO_AF);
 GPIO_PinAFConfig(CODEC_I2S_GPIO, CODEC_I2S_SD_PINSRC, CODEC_I2S_GPIO_AF);
 GPIO_PinAFConfig(CODEC_I2S_GPIO, CODEC_I2S_SI_PINSRC, GPIO_AF_I2S3ext);
 
 GPIO_InitStructure.GPIO_Pin = CODEC_I2S_WS_PIN ;
 GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
  GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
  GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
 GPIO_Init(CODEC_I2S_WS_GPIO, &GPIO_InitStructure);
 GPIO_PinAFConfig(CODEC_I2S_WS_GPIO, CODEC_I2S_WS_PINSRC, CODEC_I2S_GPIO_AF);
  

  /* CODEC_I2S pins configuration: MCK pin */
  GPIO_InitStructure.GPIO_Pin = CODEC_I2S_MCK_PIN;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
  GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
  GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
  GPIO_Init(CODEC_I2S_MCK_GPIO, &GPIO_InitStructure);  
  /* Connect pins to I2S peripheral  */
  GPIO_PinAFConfig(CODEC_I2S_MCK_GPIO, CODEC_I2S_MCK_PINSRC, CODEC_I2S_GPIO_AF);
}
static void Codec_AudioInterface_Init(uint32_t AudioFreq)
{
  I2S_InitTypeDef I2S_InitStructure;
//   DAC_InitTypeDef  DAC_InitStructure;
  /* Enable the CODEC_I2S peripheral clock */
  RCC_APB1PeriphClockCmd(CODEC_I2S_CLK, ENABLE);
 
  /* CODEC_I2S peripheral configuration */
  SPI_I2S_DeInit(CODEC_I2S);
  I2S_InitStructure.I2S_AudioFreq = AudioFreq;
  I2S_InitStructure.I2S_Standard = I2S_STANDARD;
  I2S_InitStructure.I2S_DataFormat = I2S_DataFormat_16b;
  I2S_InitStructure.I2S_CPOL = I2S_CPOL_Low;
   I2S_InitStructure.I2S_Mode = I2S_Mode_MasterRx;
  
  I2S_InitStructure.I2S_MCLKOutput = I2S_MCLKOutput_Enable;
  
  I2S_Init(CODEC_I2S, &I2S_InitStructure);
  I2S_FullDuplexConfig(I2S3ext, &I2S_InitStructure);
 
   I2S_Cmd(I2Sxext, ENABLE);
}
void Audio_MAL_I2S_RX_Init(void)
{
  NVIC_InitTypeDef NVIC_InitStructure;  
 /* Enable the DMA clock */
    RCC_AHB1PeriphClockCmd(AUDIO_I2S_DMA_RX_CLOCK , ENABLE);
   
    /* Configure the DMA Stream */
    DMA_Cmd(AUDIO_I2S_DMA_RX_STREAM, DISABLE);
    DMA_DeInit(AUDIO_I2S_DMA_RX_STREAM);
   DMA_InitStructure.DMA_Channel =AUDIO_I2S_DMA_RX_CHANNEL; 
    DMA_InitStructure.DMA_PeripheralBaseAddr = 0x40003C0C;
     DMA_InitStructure.DMA_Memory0BaseAddr = (uint32_t)I2S_RX_buffer;      /* This field will be configured in play function */
    DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralToMemory;
    DMA_InitStructure.DMA_BufferSize = (uint32_t)0xFFFE;      /* This field will be configured in play function */
    DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
    DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;
    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_VeryHigh;
    DMA_InitStructure.DMA_FIFOMode = DMA_FIFOMode_Disable;       
    DMA_InitStructure.DMA_FIFOThreshold = DMA_FIFOThreshold_HalfFull;
    DMA_InitStructure.DMA_MemoryBurst = DMA_MemoryBurst_Single;
    DMA_InitStructure.DMA_PeripheralBurst = DMA_PeripheralBurst_Single; 
     DMA_Init(AUDIO_I2S_DMA_RX_STREAM, &DMA_InitStructure);
   
   DMA_ITConfig(AUDIO_I2S_DMA_RX_STREAM, DMA_IT_TC, ENABLE);
  
    NVIC_InitStructure.NVIC_IRQChannel = AUDIO_I2S_DMA_RX_IRQ ;
    NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority =0;
    NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
    NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
    NVIC_Init(&NVIC_InitStructure);
  
   SPI_I2S_ITConfig(I2S3ext, SPI_I2S_IT_RXNE, ENABLE);
     I2S_Cmd(I2S3ext, ENABLE);  
   SPI_I2S_DMACmd(I2S3ext, SPI_I2S_DMAReq_Rx, ENABLE);
     
}
void DMA1_Stream0_IRQHandler(void)
{
 if (DMA_GetFlagStatus(AUDIO_I2S_DMA_RX_STREAM, AUDIO_I2S_DMA_RX_FLAG_TC) != RESET)
 { 
  DMA_Cmd(AUDIO_I2S_DMA_RX_STREAM, DISABLE);
   DMA_ClearFlag(AUDIO_I2S_DMA_RX_STREAM, AUDIO_I2S_DMA_RX_FLAG_TC);
   RX_XferCplt=1;
  }
}
 void recode_wav(void)  
{
DMA_InitStructure.DMA_Memory0BaseAddr = (uint32_t)I2S_RX_buffer;
    DMA_InitStructure.DMA_BufferSize =1024;
  DMA_Init(AUDIO_I2S_DMA_RX_STREAM, &DMA_InitStructure);
    /* Enable the I2S DMA Stream*/
  DMA_Cmd(AUDIO_I2S_DMA_RX_STREAM, ENABLE); 
}
 
当执行recode_wav() 时一直接收不到数据，DMA中断也能进入，不知怎么回事？
 
 
 

gwaoei

楼主的问题解决了吗？