stm32f407的IIS接口配置问题

貔貅123

最近在使用标准库配置stm32F407的IIS接口，但是配置完成后，连续调用SPI_I2S_ReceiveData(SPI2)时，用示波器测量时钟引脚，发现IIS的时钟引脚没有输出时钟，感觉IIS没有工作，配置代码如下，那位大佬可以帮我看一下，我配置的有问题吗?


void micro_GPIO_init(void)
{
  
   GPIO_InitTypeDef  GPIO_InitStructure;
   //EXTI_InitTypeDef  EXTI_InitStruct;
   //NVIC_InitTypeDef NVIC_InitStructure;
     I2S_InitTypeDef  I2S_InitStructure;

   RCC_PLLI2SConfig(192, 2);//RCC_PLLI2SConfig(uint32_t PLLI2SN, uint32_t PLLI2SR)
   RCC_I2SCLKConfig(RCC_I2S2CLKSource_PLLI2S);
   RCC_APB1PeriphClockCmd(RCC_APB1Periph_SPI2, ENABLE);
   while(RCC_GetFlagStatus(RCC_FLAG_PLLI2SRDY)!=RESET){}

     RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOB, ENABLE);
   RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOC, ENABLE);

   GPIO_PinAFConfig(GPIOB, GPIO_PinSource10, GPIO_AF_SPI2);
   GPIO_PinAFConfig(GPIOB, GPIO_PinSource12, GPIO_AF_SPI2);
   GPIO_PinAFConfig(GPIOC, GPIO_PinSource3, GPIO_AF_SPI2);

   GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10|GPIO_Pin_12;
   GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
   GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
   GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;
   GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
   GPIO_Init(GPIOB, &GPIO_InitStructure);

   GPIO_InitStructure.GPIO_Pin = GPIO_Pin_3;
   GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
   GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
   GPIO_Init(GPIOC, &GPIO_InitStructure);
   
  
   
   I2S_InitStructure.I2S_Mode =I2S_Mode_MasterRx;
   I2S_InitStructure.I2S_Standard = I2S_Standard_Phillips;
   I2S_InitStructure.I2S_DataFormat = I2S_DataFormat_16b;
   //I2S_InitStructure.I2S_MCLKOutput = I2S_MCLKOutput_Enable;
   I2S_InitStructure.I2S_MCLKOutput = I2S_MCLKOutput_Disable;
   I2S_InitStructure.I2S_AudioFreq = I2S_AudioFreq_8k;
   I2S_InitStructure.I2S_CPOL = I2S_CPOL_Low;
   
   SPI_I2S_DeInit(SPI2);
   I2S_Init(SPI2, &I2S_InitStructure);
   
   RCC_PLLI2SCmd(ENABLE);
   
   //LED_0=1;LED_1=1;
   

   
}
int main(void)
{
//LED_0=0;
//LED_1=0;

uart_init(921600);
delay_init(84);
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);
//Timer3_Init(21,1);//
LED_GPIO_Init();
micro_GPIO_init();
//PDM_Filter(pdm_buf, pcm_buf, &PDM_Filter_Handler);


  while(1)
{
   
          d=SPI_I2S_ReceiveData(SPI2);
//      USART1->DR = (v_data[v_cnt_2] & (uint16_t)0x01FF);
//      while((USART1->SR & USART_FLAG_TC) == (uint16_t)RESET);
//      LED_0=!LED_0;//100us
  
}

}

貔貅123

自问自答吧 缺少I2S_Cmd(SPI2,ENABLE);这个函数去使能IIS