STM32

急急STM32F446 I2S 无时钟输出

2019-07-20 05:34发布

站内问答 / STM32/STM8
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从407 移植 到STM32F446， 两天了I2S一直没时钟出来。 求大神帮忙。 // clock setting  RCC_PLLI2SConfig(16, 334, 2, 7, 7);   RCC_I2SCLKConfig(RCC_I2SBus_APB1, RCC_I2SCLKSource_PLLI2S);  RCC_I2SCLKConfig(RCC_I2SBus_APB2, RCC_I2SCLKSource_PLLI2S);   RCC_PLLI2SCmd(ENABLE);  while(RCC_GetFlagStatus(RCC_FLAG_PLLI2SRDY) == RESET); u8 I2S1_GPIO_Init(void){  u8 res;   GPIO_InitTypeDef GPIO_InitStructure;   RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOA, ENABLE);   GPIO_InitStructure.GPIO_Pin = GPIO_Pin_4 | GPIO_Pin_5 | GPIO_Pin_7;  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;//  GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;//  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_25MHz;//  GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;//  GPIO_Init(GPIOA, &GPIO_InitStructure);//     GPIO_PinAFConfig(GPIOA,GPIO_PinSource4,GPIO_AF_SPI1);        //  GPIO_PinAFConfig(GPIOA,GPIO_PinSource5,GPIO_AF_SPI1);        //  GPIO_PinAFConfig(GPIOA,GPIO_PinSource7,GPIO_AF_SPI1);        // return 0;} void I2S1_Init(u16 I2S_Standard, u16 I2S_Mode, u16 I2S_Clock_Polarity, u16 I2S_DataFormat){  I2S_InitTypeDef I2S_InitStructure;   RCC_APB2PeriphClockCmd(RCC_APB2Periph_SPI1, ENABLE);   RCC_APB2PeriphResetCmd(RCC_APB2Periph_SPI1, ENABLE);   RCC_APB2PeriphResetCmd(RCC_APB2Periph_SPI1, DISABLE);   I2S_InitStructure.I2S_Mode = I2S_Mode;  I2S_InitStructure.I2S_Standard = I2S_Standard;  I2S_InitStructure.I2S_DataFormat = I2S_DataFormat;   I2S_InitStructure.I2S_MCLKOutput = I2S_MCLKOutput_Disable;   I2S_InitStructure.I2S_AudioFreq = I2S_AudioFreq_Default;   I2S_InitStructure.I2S_CPOL = I2S_Clock_Polarity;   I2S_Init(SPI1, &I2S_InitStructure); /   SPI_I2S_DMACmd(SPI1, SPI_I2S_DMAReq_Rx, ENABLE);   I2S_Cmd(SPI1, ENABLE); } ...void main(void){  I2S1_GPIO_Init();I2S1_Init(I2S_Standard_Phillips,I2S_Mode_MasterRx,I2S_CPOL_Low,I2S_DataFormat_16b);  while (1)  {    asm("nop");  }}
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7条回答
kennyhuang
2019-07-20 22:26
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