高级会员

- 积分
- 802
- 金钱
- 802
- 注册时间
- 2012-9-21
- 在线时间
- 31 小时
|
5金钱
自己弄了个cs4344的DAC 模块,用f4的I2S dma,发现连中断都进不了,不知道哪里出问题,请各位高手帮忙看看。
这个是cs4344的原理图,我测了一下,I2S的管脚和F4的都是通的,电源也没问题。
这个是驱动程序:
#include "CS4344.h"
DMA_InitTypeDef DMA_InitStructure;
u32 AudioTotalSize=0xFFFF;
u32 AudioRemSize =0;
u16 *CurrentPos;
extern void AUDIO_TransferComplete(u32 pBuffer, uint32_t Size);
void AUDIO_Init(u32 AudioFreq)
{
I2S_GPIO_Init();
Audio_I2S_Init(AudioFreq);
Audio_DMA_Init();
}
void I2S_GPIO_Init(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOB, ENABLE);
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOC, ENABLE);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_12|GPIO_Pin_13 | GPIO_Pin_15 ;
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(GPIOB, &GPIO_InitStructure);
GPIO_PinAFConfig(GPIOB, GPIO_PinSource12, GPIO_AF_SPI2);
GPIO_PinAFConfig(GPIOB, GPIO_PinSource13, GPIO_AF_SPI2);
GPIO_PinAFConfig(GPIOB, GPIO_PinSource15, GPIO_AF_SPI2);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6;
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(GPIOC, &GPIO_InitStructure);
GPIO_PinAFConfig(GPIOC, GPIO_PinSource6, GPIO_AF_SPI2);
}
void Audio_I2S_Init(uint32_t AudioFreq)
{
I2S_InitTypeDef I2S_InitStructure;
RCC_APB1PeriphClockCmd(RCC_APB1Periph_SPI2, ENABLE);
SPI_I2S_DeInit(SPI2);
/* I2S peripheral configuration */
I2S_InitStructure.I2S_Standard = I2S_Standard_Phillips;
I2S_InitStructure.I2S_DataFormat = I2S_DataFormat_16b;
I2S_InitStructure.I2S_MCLKOutput = I2S_MCLKOutput_Enable;
I2S_InitStructure.I2S_AudioFreq = AudioFreq;
I2S_InitStructure.I2S_CPOL = I2S_CPOL_Low;
I2S_InitStructure.I2S_Mode = I2S_Mode_MasterTx;
I2S_Init(SPI2, &I2S_InitStructure);
//I2S_Cmd(SPI2, ENABLE);
}
void Audio_DMA_Init(void)
{
NVIC_InitTypeDef NVIC_InitStructure;
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_DMA1, ENABLE);
DMA_Cmd(DMA1_Stream4, DISABLE);
DMA_DeInit(DMA1_Stream4);
DMA_InitStructure.DMA_Channel = DMA_Channel_0;
DMA_InitStructure.DMA_PeripheralBaseAddr = 0x4000380C;
DMA_InitStructure.DMA_Memory0BaseAddr = (uint32_t)0;
DMA_InitStructure.DMA_DIR = DMA_DIR_MemoryToPeripheral;
DMA_InitStructure.DMA_BufferSize = (uint32_t)0xFFFE;
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_High;
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_Stream4, &DMA_InitStructure);
DMA_ITConfig(DMA1_Stream4, DMA_IT_TC, ENABLE);
NVIC_InitStructure.NVIC_IRQChannel = DMA1_Stream4_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
SPI_I2S_DMACmd(SPI2, SPI_I2S_DMAReq_Tx, ENABLE);
}
uint32_t AUDIO_Play(u16* pBuffer, u32 Size)
{
AudioTotalSize=Size;
Audio_MAL_Play((u32)pBuffer,(u32)(DMA_MAX(Size/4)));
AudioRemSize=(Size/2)-DMA_MAX(AudioTotalSize);
CurrentPos=pBuffer+DMA_MAX(AudioTotalSize);
return 0;
}
void Audio_MAL_Play(u32 Addr, u32 Size)
{
DMA_InitStructure.DMA_Memory0BaseAddr=(uint32_t)Addr;
DMA_InitStructure.DMA_BufferSize=(uint32_t)Size/2;
DMA_Init(DMA1_Stream4,&DMA_InitStructure);
DMA_Cmd(DMA1_Stream4,ENABLE);
if ((SPI2->I2SCFGR & I2S_ENABLE_MASK)==0)I2S_Cmd(SPI2,ENABLE);
}
void SPI2_IRQHandler(void)
{
if (SPI_I2S_GetFlagStatus(SPI2,SPI_I2S_FLAG_TXE)!=RESET)
{
SPI_I2S_SendData(SPI2, 0);
}
}
void DMA1_Stream4_IRQHandler(void)
{
if (DMA_GetFlagStatus(DMA1_Stream4, DMA_FLAG_TCIF4)!=RESET)
{
if (AudioRemSize>0)
{
while (DMA_GetCmdStatus(DMA1_Stream4) != DISABLE);
DMA_ClearFlag(DMA1_Stream4, DMA_FLAG_TCIF4);
DMA_InitStructure.DMA_Memory0BaseAddr = (uint32_t) CurrentPos;
DMA_InitStructure.DMA_BufferSize = (uint32_t) (DMA_MAX(AudioRemSize));
DMA_Init(DMA1_Stream4, &DMA_InitStructure);
DMA_Cmd(DMA1_Stream4, ENABLE);
CurrentPos += DMA_MAX(AudioRemSize);
AudioRemSize -= DMA_MAX(AudioRemSize);
DMA_Cmd(DMA1_Stream4, ENABLE);
}
else
{
DMA_Cmd(DMA1_Stream4, DISABLE);
DMA_ClearFlag(DMA1_Stream4, DMA_FLAG_TCIF4);
AUDIO_TransferComplete((uint32_t)CurrentPos, 0);
}
}
}
|
最佳答案
查看完整内容[请看2#楼]
参考龙源的代码:http://www.openedv.com/posts/list/5143.htm
有CS4334的.
|