stm32f4 I2S DMA 中断进不去 请大神帮忙看一下
I2S 时钟管脚配置GPIO_InitTypeDef GPIO_InitStructure;
I2S_InitTypeDef I2S_InitStructure;
// NVIC_InitTypeDef NVIC_InitStructure;
RCC_I2SCLKConfig(RCC_I2S2CLKSource_PLLI2S);
/* Enable the CODEC_I2S peripheral clock */
RCC_APB1PeriphClockCmd(CODEC_I2S_CLK, ENABLE);
//ʹÄÜI2SµÄʱÖÓ!!
RCC_AHB1PeriphClockCmd(CODEC_I2S_GPIO_CLOCK, ENABLE);
/* CODEC_I2S_2 pins configuration: WS, SCK and SD pins -----------------------------*/
GPIO_InitStructure.GPIO_Pin = CODEC_I2S_2_WS_PIN | CODEC_I2S_2_SCK_PIN | CODEC_I2S_2_SD_PIN | CODEC_I2S_2_ext_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_2_GPIO, &GPIO_InitStructure);
/* Connect pins to I2S peripheral*/
GPIO_PinAFConfig(CODEC_I2S_2_GPIO, CODEC_I2S_2_WS_PINSRC, CODEC_I2S_2_GPIO_AF);
GPIO_PinAFConfig(CODEC_I2S_2_GPIO, CODEC_I2S_2_SCK_PINSRC, CODEC_I2S_2_GPIO_AF);
GPIO_PinAFConfig(CODEC_I2S_2_GPIO, CODEC_I2S_2_SD_PINSRC, CODEC_I2S_2_GPIO_AF);
GPIO_PinAFConfig(CODEC_I2S_2_GPIO, CODEC_I2S_2_ext_PINSRC, CODEC_I2S_2_GPIO_AF);
//Ö÷ʱÖÓ!
/* CODEC_I2S pins configuration: MCK pin */
GPIO_InitStructure.GPIO_Pin = CODEC_I2S_2_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_UP;
GPIO_Init(CODEC_I2S_2_MCK_GPIO, &GPIO_InitStructure);
GPIO_PinAFConfig(CODEC_I2S_2_MCK_GPIO, CODEC_I2S_2_MCK_PINSRC, CODEC_I2S_2_GPIO_AF);
DMA配置
void I2S2ext_RX_DMA_Init(u8* buf0,u8 *buf1,u16 num)
{
NVIC_InitTypeDef NVIC_InitStructure;
DMA_InitTypeDefDMA_InitStructure;
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_DMA1,ENABLE);//DMA1ʱÖÓʹÄÜ
//DMA_Cmd(DMA1_Stream3, DISABLE);
DMA_DeInit(DMA1_Stream3);
while (DMA_GetCmdStatus(DMA1_Stream3) != DISABLE){}//µÈ´ýDMA1_Stream3¿ÉÅäÖÃ
SPI_I2S_DMACmd(I2S2ext, SPI_I2S_DMAReq_Rx, ENABLE);
DMA_ClearITPendingBit(DMA1_Stream3,DMA_IT_FEIF3|DMA_IT_DMEIF3|DMA_IT_TEIF3|DMA_IT_HTIF3|DMA_IT_TCIF3);//Çå¿ÕDMA1_Stream3ÉÏËùÓÐÖжϱêÖ¾
/* ÅäÖÃ DMA Stream */
DMA_InitStructure.DMA_Channel = DMA_Channel_3;
DMA_InitStructure.DMA_PeripheralBaseAddr = (u32)&I2S2ext->DR;
DMA_InitStructure.DMA_Memory0BaseAddr = (u32)buf0;
DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralToMemory;
DMA_InitStructure.DMA_BufferSize = num;//Êý¾Ý´«ÊäÁ¿
DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;
DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_Word;
DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_Word;
DMA_InitStructure.DMA_Mode = DMA_Mode_Circular;
DMA_InitStructure.DMA_Priority = DMA_Priority_Medium;
DMA_InitStructure.DMA_FIFOMode = DMA_FIFOMode_Disable;
DMA_InitStructure.DMA_FIFOThreshold = DMA_FIFOThreshold_1QuarterFull;
DMA_InitStructure.DMA_MemoryBurst = DMA_MemoryBurst_Single;
DMA_InitStructure.DMA_PeripheralBurst = DMA_PeripheralBurst_Single;
DMA_Init(DMA1_Stream3, &DMA_InitStructure);
DMA_DoubleBufferModeConfig(DMA1_Stream3,(u32)buf1,DMA_Memory_0);
DMA_DoubleBufferModeCmd(DMA1_Stream3,ENABLE);
DMA_ITConfig(DMA1_Stream3,DMA_IT_TC,ENABLE);
NVIC_InitStructure.NVIC_IRQChannel = DMA1_Stream3_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority =0x00;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0x01;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);//ÅäÖÃ
}
中断服务函数
void DMA1_Stream3_IRQHandler(void)
{
int i=0;
if(DMA_GetITStatus(DMA1_Stream3,DMA_IT_TCIF3)==SET) //DMA1_Stream3,´«ÊäÍê³É±êÖ¾
{
DMA_ClearITPendingBit(DMA1_Stream3,DMA_IT_TCIF3); //Çå³ý´«ÊäÍê³ÉÖжÏ
for(i=0;i<=1024;i++)
{
printf("PI %d \r\n",*(p1+i));//¸üÐÂÏÔʾÄÚÈÝ
}
//i2s_rx_callback(); //Ö´Ðлص÷º¯Êý,¶ÁÈ¡Êý¾ÝµÈ²Ù×÷ÔÚÕâÀïÃæ´¦Àí
}
}
void I2S_Rec_Start(void)
{
DMA_Cmd(DMA1_Stream3,ENABLE);//¿ªÆôDMA TX´«Êä,¿ªÊ¼Â¼Òô
}
主程序
my_I2S2ext_Init(I2S_Standard_Phillips,I2S_Mode_SlaveRx,I2S_CPOL_Low,I2S_DataFormat_32b);
I2S2ext_RX_DMA_Init(p1,p2,(2*1024));
I2S_Rec_Start();
程序是从原子的历程移植的 为何DMA的中断不能进不去，调了一上午，请各位大神帮忙看一下，不胜感激
小弟在线等，请各位帮下忙
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