main.c

用8051采用pwm方式播放 串口语音数据

/***************************************************************\
name         : main.c
desctiption  : mp3 main file for testing serial port
author       : coolfire
update       : 6/17/07
/***************************************************************/
#include <reg51.h>
#include "compiler.h"
#include "init\init.h"
#include "buffer\buffer.h"
#include "serial\serial.h"

extern Uint32 wav_len_w;
extern Uint32 wav_len_r;

mode_t mode=download;

void main()
{
	init();

	loop:   switch(mode)
	      	{

	      	 case idle:
	    	       while(mode==idle);
	   	       break;

	      	 case download:
	             while(mode==download)
	             {
	                if(!wav_len_w)
						write_buffer(serial);
	
    	            read_buffer(flash);
        	     }
   				 break;

	         case play:
   		       while(mode==play)
   				 {
	                if(!wav_len_r)
   				    	write_buffer(flash);
   					read_buffer(dac);
    			 	}
   			 	break;
      	 	}

	goto loop;
}