vs1053录音问题

hooddas · 发表于 2012-11-6 11:47:35

使用vs1053录音，录出来的声音好像快放一样，声音比正常要快很多，设置什么的都对，测试也是对的，就是不知道加上操作系统哪里出问题了
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/*******************************************
函数名称：u8 rec_pre_input(void)
功能描述：话筒预录导入
全局变量：无
参数说明：无
返回值：无
说明：
********************************************/
u8 rec_pre_input(void)
{
u16 i;
u32 rec_mic_num = 0;
u32 offset;
u8 ptt_flag = 0;
u8 temp;//段数
u16 count, start;//读取文件的扇区数量
u16 vs_temp;
u16 rec_start;
OS_ENTER_CRITICAL();
NAND_ReadSector(0, nand_buf);
temp = nand_buf[PRE_NUM_ADD + 3];//该写入的段数
start = ((u16)nand_buf[PRE_START_ADD + ((temp - 1) * 16) + 2]) << 8;//读取上一段起始地址
start = start | (u16)nand_buf[PRE_START_ADD + ((temp - 1) * 16) + 3];
count = ((u16)nand_buf[PRE_START_ADD + ((temp - 1) * 16) + 6]) << 8;//读取上一段扇区总数
count = count | (u16)nand_buf[PRE_START_ADD + ((temp - 1) * 16) + 7];
rec_start = count + start;//新段的开始地址
while(1)
{
  if(PTT_OPEN == 0)
  {
   if(ptt_flag == 0)
   {
    recoder_mode_mic();//开启录音模式
   }
   ptt_flag = 1;
   vs_temp = VS_RD_Reg(VS1003_HDAT1);
   if((vs_temp >= 256) && (vs_temp < 896))
   {
    for(i = 0; i < 256; i++)
    {
     vs_temp = VS_RD_Reg(VS1003_HDAT0);
     nand_buf[i * 2] = vs_temp >> 8;
     nand_buf[i * 2 + 1] = vs_temp;
    }
    NAND_WriteSector((pre_count + rec_start + 1), nand_buf);
    while(NAND_RB == 0);//等待忙管脚变高
      pre_count++;
   }
   if(pre_count > 25599)
   {
    for(i = 201; i < 300; i++)
    {
     NAND_EraseBlock(i);
    }
    NAND_ReadSector(0, nand_buf);//读取第0扇区

       rec_mic_num = (nand_buf[MIC_NUM_ADD] << 24);//读取话筒录音计数值
    rec_mic_num = rec_mic_num | (nand_buf[MIC_NUM_ADD + 1] << 16);
    rec_mic_num = rec_mic_num | (nand_buf[MIC_NUM_ADD + 2] << 8);
    rec_mic_num = rec_mic_num | nand_buf[MIC_NUM_ADD + 3];

     if(rec_mic_num >= 0x3fec)
    {
     rec_mic_num = 0;
    }
    offset = MIC_START_ADD + (rec_mic_num * 16);
    offset = offset / 512;
    for(i = 0; i < offset; i++)
    {
     NAND_ReadSector(i, nand_buf);
     NAND_WriteSector(i + 256, nand_buf);
    }

    NAND_ReadSector(0, nand_buf);//读第一块第0扇区
    NAND_EraseBlock(0);//擦除第0块
    nand_buf[PRE_NUM_ADD + 3] = 0;
    nand_buf[PRE_START_ADD + 2] = 0xC9;
    nand_buf[PRE_START_ADD + 3] = 0;
    nand_buf[PRE_START_ADD + 6] = 0;
    nand_buf[PRE_START_ADD + 7] = 0;
    NAND_WriteSector(0, nand_buf);
    for(i = 1; i < offset; i++)
    {
     NAND_ReadSector(i + 256, nand_buf);
     NAND_WriteSector(i, nand_buf);
    }
    OS_EXIT_CRITICAL();
    return 99;
   }
  }
  if((ptt_flag == 1) && (PTT_OPEN == 1))
  {
   ptt_flag = 0;
   recoder_header_info(rec_start, pre_count);
   NAND_ReadSector(0, nand_buf);//读取第0扇区

      rec_mic_num = (nand_buf[MIC_NUM_ADD] << 24);//读取话筒录音计数值
   rec_mic_num = rec_mic_num | (nand_buf[MIC_NUM_ADD + 1] << 16);
   rec_mic_num = rec_mic_num | (nand_buf[MIC_NUM_ADD + 2] << 8);
   rec_mic_num = rec_mic_num | nand_buf[MIC_NUM_ADD + 3];

   if(rec_mic_num >= 0x3fec)
   {
    rec_mic_num = 0;
   }
   offset = MIC_START_ADD + (rec_mic_num * 16);
   offset = offset / 512;
   for(i = 0; i < offset; i++)
   {
    NAND_ReadSector(i, nand_buf);
    NAND_WriteSector(i + 256, nand_buf);
   }

   NAND_ReadSector(0, nand_buf);//读第一块第0扇区
   NAND_EraseBlock(0);//擦除第0块
   nand_buf[PRE_NUM_ADD + 3] = temp;
     nand_buf[PRE_START_ADD + (temp * 16) + 2] = (u8)((rec_start >> 8) & 0xff);
   nand_buf[PRE_START_ADD + (temp * 16) + 3] = (u8)(rec_start & 0xff);
   nand_buf[PRE_START_ADD + (temp * 16) + 6] = (u8)(((pre_count + 1) >> 8) & 0xff);
   nand_buf[PRE_START_ADD + (temp * 16) + 7] = (u8)((pre_count + 1) & 0xff);
   NAND_WriteSector(0, nand_buf);
   for(i = 1; i < offset; i++)
   {
    NAND_ReadSector(i + 256, nand_buf);
    NAND_WriteSector(i, nand_buf);
   }
   OS_EXIT_CRITICAL();
   return 99;
}
}
}