430制作的音频播放器程序

我爱因仑风 · 发表于 2016-4-12 20:11:31

使用VS1003,这个程序还在调试中,正弦测试通过,但是播放音频没有声音,自己也在找问题,现在公开代码,大家可以一起讨论讨论.

#include "VS1003.h"

unsigned char szBeepMP3[864] =
{
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};

void Waitms(unsigned int i)
{

unsigned int ct;
while(i--)
{
      for(ct=0; ct <100 ;ct++);

}
/*
#define COUNTER 8000

unsigned int ct=i;
while(ct--)
{
      CCR0  = COUNTER;
      TACTL = TASSEL1+TACLR;             // ACLK, upmode
      TACTL |= MC0;
      while(TAIFG == 0 ) ;
      TACTL = MC0 | MC1;
}
*/

}

void SerialWrite(unsigned char Data)
{

unsigned char i;
for(i=0; i<8 ;i++)
{
      P1DIR |= REQ;
      P1OUT |= REQ;
      P1DIR &= ~REQ;
      while(! ( P1IN & REQ ) ) ;

      CLR(SCLK);

      if(Data & 0x80)
         SET(SI);
      else
         CLR(SI);

      Data <<=  1;

      SET(SCLK);

}
}

unsigned char SerialRead()
{
unsigned char i;
unsigned char res=0x00;
for(i=0; i<8 ;i++)
{
      SET(SCLK);
      _NOP();
      CLR(SCLK);

      res <<=1;
      if( P1IN & SO )
         res |= 0x01;


}

return res;
}




void SCIWrite(unsigned char addr, unsigned int Data)
{

SET(DCS);
CLR(CS);

SerialWrite(SI_WRITE);

SerialWrite(addr);
SerialWrite(Data >> 8);
SerialWrite(Data);

SET(CS);
CLR(DCS);

}

unsigned int SCIRead(unsigned char addr)
{
unsigned char i;
unsigned int r;
SET(DCS);
CLR(CS);

SerialWrite(SI_READ);
SerialWrite(addr);
r = SerialRead() << 8;
r += SerialRead();

SET(CS);
CLR(DCS);

for( i=20 ; i>0; i--);
return r;
}

void SetVolume(unsigned char l, unsigned char r)
{
SCIWrite(SCI_VOL, ((l << 8) + r));
}

void SetBass(unsigned char amp, unsigned char freq)
{
SCIWrite(SCI_BASS, ((amp & 0x0f) << 4) | (freq & 0x0f));
}

unsigned char Version()
{
return (SCIRead(SCI_STATUS) >> 4) & 0x7;
}

void PlayBeep()
{
unsigned int i;

SET(CS);
CLR(DCS);

for( i=0; i< 864 ;i++)
      SerialWrite(szBeepMP3);

CLR(CS);
SET(DCS);

for(i=0; i<30;i++)
      SerialWrite(0x00);
}

void InitVS1003()
{
SET(SI|SCLK|DCS|CS);
CLR(REQ|SO);

CLR(RST);
_NOP();
_NOP();
SET(RST);

while(! ( P1IN & REQ ) ) ; // Wait untill the REQ is high

SCIWrite(SCI_MODE, SM_SDINEW | SM_RESET);
SetBass(0, 10);                   // 0db, 100Hz
SCIWrite(SCI_CLOCKF, 0x9800);
SetVolume(0, 0);

}

void InitPort()
{
P1DIR |= (RST|SI|SCLK|CS|DCS);
P1DIR &=~(REQ|SO);

}

void SineTest(void)
{
//
//向vs1003发送正弦测试命令：0x53 0xef 0x6e n 0x00 0x00 0x00 0x00
//其中n = 0x24, 设定vs1003所产生的正弦波的频率值，具体计算方法见vs1003的datasheet
//
SET(CS);
CLR(DCS);
SCIWrite(0x00,0x0820);
SerialWrite(0x53);
SerialWrite(0xef);
SerialWrite(0x6e);
SerialWrite(0x24);
SerialWrite(0x00);
SerialWrite(0x00);
SerialWrite(0x00);
SerialWrite(0x00);

while(!(P1IN & REQ ));
CLR(CS);
SET(DCS);

Waitms(500);

//
//退出正弦测试
//
SET(CS);
CLR(DCS);
SerialWrite(0x45);
SerialWrite(0x78);
SerialWrite(0x69);
SerialWrite(0x74);
SerialWrite(0x00);
SerialWrite(0x00);
SerialWrite(0x00);
SerialWrite(0x00);
while(!(P1IN & REQ ));
CLR(CS);
SET(DCS);

//
//再次进入正弦测试并设置n值为0x44，即将正弦波的频率设置为另外的值
//
SET(CS);
CLR(DCS);
SerialWrite(0x53);
SerialWrite(0xef);
SerialWrite(0x6e);
SerialWrite(0x44);
SerialWrite(0x00);
SerialWrite(0x00);
SerialWrite(0x00);
SerialWrite(0x00);
while(!(P1IN & REQ ));
CLR(CS);
SET(DCS);

Waitms(500);

//
//退出正弦测试
//
SET(CS);
CLR(DCS);
SerialWrite(0x45);
SerialWrite(0x78);
SerialWrite(0x69);
SerialWrite(0x74);
SerialWrite(0x00);
SerialWrite(0x00);
SerialWrite(0x00);
SerialWrite(0x00);
while(!(P1IN & REQ ));
CLR(CS);
SET(DCS);
}
void play (unsigned char dat){
while(!(P1IN & REQ ));
SerialWrite(dat);
}