main.c

44B0通过IIS总线播放WAV格式音乐文件的源代码

#include "option.h"
#include "def.h"
#include "44b.h"
#include "44blib.h"
#include "Iis.h"
volatile unsigned int size=0;
static U32 TimerCnt=0;
static int LedStatus=0;
char *wavdata;
unsigned char *Buf,*_temp;
void __irq RxInt(void);

void __irq Timer_Tick(void)
{	
    rI_ISPC=BIT_TIMER3;
    
    if(TimerCnt++ == 10) {
		TimerCnt=0;
		Led_Display(LedStatus);
		LedStatus=(~(LedStatus)&0x7);
		Uart_Printf("\nTIMER3 interrupt... ");
		
    }
 
}
void __irq Timer_ISR(void)
{
 rI_ISPC=BIT_TIMER0;
 Uart_Printf("\nTIMER0 interrupt... ");
}
void Timer_Init(void)
{
/*	
 *	Timer Clock Frequency = MCLK/pre/mux
 */	
    rTCFG0=0x00000f0f;	//dead zone=0,pre2=0,pre1=0xf,pre0=0
    rTCFG1=0x0000100a;	//all interrupt,mux5=1/2,mux2=1/2,mux3=1/4,mux2=1/2,mux1=1/2,mux0=1/2
    
    rTCNTB3=0xc000;		//(1/(60MHz/4/15))*0xc350=50ms
    					//(1/(60MHz/4/15))*0x4320=20ms
    rTCMPB3=0x010;
    rTCNTB1=400;
    

    rTCON=0x002000a;	//update T3
    rTCON=0x0090009;	//T3=auto reload,start	
    
    rINTCON=0x5;    //Non-vectored,IRQ enable,FIQ disable 
    rINTMOD=0x0;    //All=IRQ mode
     pISR_TIMER0=(unsigned)Timer_ISR; 
    pISR_TIMER3=(unsigned)Timer_Tick;
    rINTMSK=BIT_GLOBAL;
   // rINTMSK=~(BIT_GLOBAL|BIT_TIMER3 |BIT_TIMER0);	//start timer INT
    
    rINTMSK=~(BIT_GLOBAL|BIT_TIMER3);
    
   
 
 
}

void Main(void)
{

  U32 i;
    rSYSCFG=CACHECFG;   // Using 8KB Cache//



    Port_Init();
    Uart_Init(0,57600);
    Delay(10);
    Uart_Select(0); //Select UART0
    Led_Display(0x07);
     pISR_URXD0=(unsigned)RxInt;
    Uart_Printf("\nFS44B0X TIMER ");
    Uart_Printf("\n定时器中断DEMO");
      
    rINTCON=0x5;    //Non-vectored,IRQ enable,FIQ disable 
    rINTMOD=0x0; 
    
    
      rINTMSK=~(BIT_GLOBAL|BIT_URXD0);
  //  Timer_Init();
  
     Buf=(unsigned char *)0xc400000;
    _temp=Buf;
    
    for(i=0xc400000;i<(0xc400000+0xf0000);i+=4)
    {
    
	*((volatile unsigned *)i)=0x00;
    }
  
    

   Uart_Printf("Download the PCM(no ADPCM) wave file by wkcom2(with header)!!\n");

    while(((unsigned int)_temp-(unsigned int)Buf)<4)
    {
	Led_Display(0xf);
	Delay(1500);
	Led_Display(0x0);
	Delay(1500);
    }
    size=*(Buf) | *(Buf+1)<<8 | *(Buf+2)<<16 | *(Buf+3)<<24;
    Uart_Printf("\nNow, Downloading... [FILESIZE:%7d(      0)",size);
    while(((unsigned int)_temp-(unsigned int)Buf)<size)
    	Uart_Printf("\b\b\b\b\b\b\b\b%7d)",(unsigned int)_temp-(unsigned int)Buf);
    Uart_Printf("\b\b\b\b\b\b\b\b%7d)\n",(unsigned int)_temp-(unsigned int)Buf);

    rINTMSK |=BIT_URXD0;

 //   while(1)
   // {
   Play_BigWave(0xc400004,size);
 //}
while(1);
 
}
void __irq RxInt(void)
{
  rI_ISPC=BIT_URXD0 ;	//clear pending bits
    *_temp++=RdURXH0();
}