VS1053b录音文件播放速度很快，请大神指点。

lss1330 · 发表于 2016-11-21 22:08:26

调试之类曲折呀，一开始是不行，换了一个1003，可以了，但是不能录音，又换了一个1053，可以放歌可以录音，只是录音文件放出来的速度很快。百思不得其解。请各位指点指点。
void vs10xx_record(void)
{

unsigned int data_count = 0;

uint16_t u16data = 0;
unsigned int file_size = 0;
unsigned int idx = 0;
uint8_t u8times = 0;
uint8_t u8switch = 0;
int ret;
struct file_wav head = {
.ChunkID = 0x46464952,
.ChunkSize = 0,
.Format = 0x45564157,

.SubChunk1ID = 0x20746d66,  //"fmt "
.SubChunk1Size = 16, //大小为16字节
.AudioFormat = 0x01, // ADPCM
.NumOfChannels = 1, // 单声道
.SampleRate = 8000, //8000比特率
.ByteRate = 16000, // 8000 * 2
.BlockAlign = 2, //每一块为2字节
.BitsPerSample = 16,       //十六位

.SubChunk3ID = 0x61746164,  //"data"
.SubChunk3Size = 0

};

INFOF((FILE" record strat\n"));

  file_size = sizeof(head);
fd =create (FILE,  777);
if (fd < 0) {
return;
}
ret = write(fd, &head, sizeof(struct file_wav));
if (ret == 0) {
close(fd);
return;
}
fsync(fd);
VS1003B_WriteCMD(SPI_BASS, 0);
VS1003B_WriteCMD(SPI_AICTRL0, 8000);
VS1003B_WriteCMD(SPI_AICTRL1, 4096);    //4倍增益
VS1003B_WriteCMD(SPI_AICTRL2, 0);
VS1003B_WriteCMD(SPI_AICTRL3, 6);
VS1003B_WriteCMD(SPI_CLOCKF, 0x2000);
VS1003B_WriteCMD(SPI_MODE, 0x1804);
mdelay(5);

VS_Load_Patch((uint16_t *)wav_plugin, 40);

while (Mp3ReadRegister(SPI_HDAT1) >> 8);
while (1) {

data_count = Mp3ReadRegister(SPI_HDAT1);
if (data_count > 256 && data_count < 896) {
idx = 0;
while (idx < 512) {
u16data = Mp3ReadRegister(SPI_HDAT0);

data1[idx++]  = u16data & 0xff;
data1[idx++]  = u16data >> 8;

}
file_size += 512;
ret = write(fd, data1, idx);
if (ret <= 0) {
INFOF((" write error\n"));
close(fd);
break;
}
fsync(fd);
led_toggle(0);
}

if (gpio_get(VKEY1) == 0) {
while (gpio_get(VKEY1) == 0 ){
mdelay(200);
}
INFOF((FILE" record over\n"));
head.ChunkSize = file_size - 8; //算出大小，总文件大小-8
head.SubChunk3Size = file_size - sizeof(struct file_wav); //算出大小，总文件大小减去头部
lseek(fd, 0, SEEK_SET);
write(fd, &head, sizeof(head));
close(fd);

VS1003B_SoftReset();
INFOF(("file size: %d\n", head.ChunkSize + 8));
break;
}
}
}

void vs10xx_play(void)
{
int status;
int fd;
char testbuf[512] = {0x11,0x22,0x33,0x44,0x55,0x66,0x77,0x88,0x99};
uint32_t file_size = 0;
int count = 0;
Mp3Reset();
Mp3SoftReset();//里面包含VS1003B_WriteCMD(SPI_CLOCKF, 0x9800);
VS1003B_SetVirtualSurroundOn();
VS1003B_WriteCMD(SPI_DECODE_TIME,0x0000);    //复位解码器时间
VS1003B_WriteCMD(SPI_DECODE_TIME,0x0000);
VS_Load_Patch((uint16_t *)wav_plugin, 40);    //加载配置
INFOF(("register SPI_CLOCKF: 0x%x\n", Mp3ReadRegister(SPI_CLOCKF)));
INFOF(("play strat\n"));
if ((fd = open(FILE,  O_RDWR, 777))  < 0) {
INFOF(("open error: 0x%x\n", fd));
return;
}

while(1){
status = read( fd, testbuf, 512 );
// INFOF(("sizeof (buffer): %d\n",  sizeof (buffer)));
if ( status > 0 )
{
count = 0;
Mp3DeselectControl();
Mp3SelectData();

while ( count < 512)  /* SD?¨?áè?ò???sector￡?ò???sector?a512×??ú */
{
if ( MP3_DREQ != 0 )       /* μè′yDREQ?a??￡????óêy?Yê?è? */
{
VS1003B_WriteDAT( testbuf + count, 32);
count += 32;
}
}
Mp3DeselectData();

led_toggle(0);
if (gpio_get(VKEY2) == 0) {
while (gpio_get(VKEY2) == 0 ){
mdelay(200);
}
INFOF(("break\n"));
close(fd);
break;
}
}
else {
INFOF((FILE" play over\n"));
close(fd);
VS1003B_Fill2048Zero();
break;
}
}

}

这个是在多任务的操作系统实现的，任务级别是2，其实挺高级的任务了。
我自己排除了一些情况：
1、卡的读写速度不够，导致漏了数据。
      我创建了一个10M的数组，直接将录音数据存放在数组中，播放时直接播放数组，还是一样的情况。
2、时钟频率不匹配的问题，
      我试过录音时VS1003B_WriteCMD(SPI_CLOCKF, 0x2000);播放是设（SPI_CLOCKF, 0x9800);
      试过录音时VS1003B_WriteCMD(SPI_CLOCKF, 0x9800);播放是设（SPI_CLOCKF, 0x9800);
      试过录音时VS1003B_WriteCMD(SPI_CLOCKF, 0x9800);播放是设（SPI_CLOCKF, 0x2000);
      试过录音时VS1003B_WriteCMD(SPI_CLOCKF, 0x9800);播放是设（SPI_CLOCKF, 0x2000);
      都不行。
是还有什么地方我没有设置好吗？还是说我漏了什么东西？