新唐nuc140接vs1053做mp3播放器。谁能帮帮看代码

只看该作者 · 2015-1-7 20:27

本帖最后由 492072866 于 2015-1-8 13:51 编辑

代码如下，那位大神帮看看问题在哪？目测是spi的问题

void SPI_send(uint8_t data)  //spi发送函数
{
      SPI1->TX[0] = data;
      SPI1->CNTRL.GO_BUSY = 1;
      while ( SPI1->CNTRL.GO_BUSY == 1 );       //check data out?
}

void SPI_read(uint8_t data) //spi接受函数
{
      data=SPI1->RX[0];
      SPI1->CNTRL.GO_BUSY = 1;
      while ( SPI1->CNTRL.GO_BUSY == 1 );       //check data out?
}

int DREQ() //获取DREQ引脚
{
int sssp;
sssp=DrvGPIO_GetBit(E_GPA, 1);
return sssp;
}

void SPI_init(void)  //spi初始化
{
      DrvGPIO_InitFunction(E_FUNC_SPI1);
      DrvSPI_Open(eDRVSPI_PORT1,eDRVSPI_MASTER,eDRVSPI_TYPE1,8);
      DrvSPI_SetBitLength(eDRVSPI_PORT1,8);
      DrvSPI_SetEndian(eDRVSPI_PORT1, eDRVSPI_MSB_FIRST);
      DrvSPI_DisableAutoSS(eDRVSPI_PORT1);
      DrvSPI_SetSlaveSelectActiveLevel(eDRVSPI_PORT1, eDRVSPI_ACTIVE_LOW_FALLING);
      DrvSPI_SetClockFreq(eDRVSPI_PORT1, 9000000, 0);
      DrvGPIO_Open(E_GPE, VS_CS,E_IO_OUTPUT);
      SPI_send(0xFF);
}

void VS1053_Reset()  //vs1053硬复位
{
DrvGPIO_SetBit(E_GPE, VS_XCS);
DrvGPIO_SetBit(E_GPE, VS_CS);
  DrvGPIO_ClrBit(E_GPE, 4);
  DrvSYS_Delay(1000);
  DrvGPIO_SetBit(E_GPE, 4);
  while(DREQ()==0)
      {;}
}

void VS1053_writeReg(uint8_t addr,uint16_t dat) //vs1053写指令
{DrvSPI_SetClockFreq(eDRVSPI_PORT1, 1125000, 0);
DrvGPIO_SetBit(E_GPE, VS_XCS);
DrvGPIO_ClrBit(E_GPE, VS_CS);
SPI_send(VS_WRITE_COM);
SPI_send(addr);
SPI_send((uint8_t)(dat>>8));
SPI_send((uint8_t)(dat));
DrvGPIO_SetBit(E_GPE, VS_CS);
DrvSPI_SetClockFreq(eDRVSPI_PORT1, 9000000, 0);
}

void VS1053_writeData(uint8_t dat)       //向vs1053写数据
{
DrvGPIO_ClrBit(E_GPE, VS_XCS);
//DrvGPIO_SetBit(E_GPE, 3);
//DrvGPIO_ClrBit(E_GPC, 8);
//SPI_send(VS_WRITE_COM);
//SPI_send(VS_SCI_AUDATA);
SPI_send((uint8_t)(dat));
DrvGPIO_SetBit(E_GPE, VS_XCS);
}

void VS1053_SoltReset()                                              //软件复位vs1053
{DrvSPI_SetClockFreq(eDRVSPI_PORT1, 281000, 0);
VS1053_writeReg(VS_SCI_MODE,0x0807);
while(DREQ()==0)
      {;}
      VS1053_writeReg(VS_SCI_CLOCKF,0x9800);
  DrvSPI_SetClockFreq(eDRVSPI_PORT1, 9000000, 0);
DrvGPIO_ClrBit(E_GPE, VS_XCS);
  SPI_send(0x0);
  SPI_send(0x0);
  SPI_send(0x0);
  SPI_send(0x0);
DrvGPIO_SetBit(E_GPE, VS_XCS);
while(DREQ()==0)
      {;}
}

void VS1053Init()                               //初始化vs1053
{
VS1053_Reset();
      VS1053_SoltReset();
VS1053_writeReg(VS_SCI_MODE,0x0803);
  VS1053_writeReg(VS_SCI_BASS,0x0055);
VS1053_writeReg(VS_SCI_CLOCKF,0x9800);
VS1053_Vol=0xCA;
VS1053_writeReg(VS_SCI_VOL,(VS1053_Vol<<8)|VS1053_Vol);
      while(DREQ()==0)
      {;}
}

uint16_t VS1053read(uint8_t addr)    //读取vs1053寄存器
{
uint16_t tem;
while(DREQ()==0)
      {;}
DrvSPI_SetClockFreq(eDRVSPI_PORT1, 1125000, 0);
DrvGPIO_SetBit(E_GPE, VS_XCS);
DrvGPIO_ClrBit(E_GPE, VS_CS);
SPI_send(VS_READ_COM);
SPI_send(addr);
SPI_read(tem);
tem=tem<<8;
SPI_read(tem);
DrvGPIO_SetBit(E_GPE, VS_CS);
DrvSPI_SetClockFreq(eDRVSPI_PORT1, 9000000, 0);
return tem;
}

void playmusic(uint8_t *mp3File) //播放音乐
{
uint16_t k;
int t;
FATFS fs;
BYTE MMcbuf[512];
FIL file;
UINT br;
FRESULT res;
f_mount(0,&fs);          // 加载文件系统

      res = f_open(&file,(const TCHAR *)mp3File, FA_OPEN_EXISTING|FA_READ); // 打开文件

if(res == FR_OK)  // 如果没有正确打开文件
{
      while(1)
         {
         res=f_read(&file,MMcbuf,512,&br);
            k=0;
            do
            {
               if(DREQ()==1&&res == FR_OK)
               {
               for(t=0;t<32;t++)
               {VS1053_writeData(MMcbuf[k++]);}
               }
               if (ScanKey()!=0) keyhave();
            }while(k<512);
         if((res!= FR_OK)||(br<512)) break;
         }
      }
      f_close(&file);
      f_mount(0,0);
}