/************************************************************/
/*		         MP3 Code for   M32L					    */
/*				   By   pasyong								*/
/*				   2006-4									*/
/*				   Base ICC6.31A					        */
/************************************************************/
#include <iom32v.h>
#include <macros.h>
#include <stdio.h>
#include "1011.h"
#include "mp3.h"
#include "sd.h"
#include "fat.h"
#include "uarst.h"

void key_port(void)
 {
 DDRD=0X00;
 PORTD=0XFF;
 }
void main()
{
key_port();
spi_init();
mp3_port_init();vs1011_init();vs1011_init();
sd_port_init();SD_Init();SD_Init();
uart0_init();
SPCR = 0x50;                //提速
SPSR = 0x01;                //setup SPI

fatInit();                  //查詢SDFAT格式
if(Fat32Enabled)            //設置FAT格式標志
 FAT_MASK=FAT32_MASK;
else 
FAT_MASK=FAT16_MASK;


   while(1)
   { 
//播放音樂
   for(t=3;t<50;t++)
    {
	flag=0;
	mp3_play(fatGetDirEntry(t));
	}
    }
}


void mp3_play(unsigned long FirstClust)
{  
uint32 LBA,NextCluster;
uint16 i,data_pointer,rate;
uint8 n,t1;
NextCluster = FirstClust;

   while (1)
 	  {	
	  LBA =fatClustToSect(NextCluster);
	  for (i=0;i<SectorsPerCluster;i++)
	  	  {
		  if(flag==0)  ReadBlock(LBA+i);      //讀完后文件指針自動后移
		  
	//按鍵處理程序
	    //ST/PS鍵按下
	  if(!(PIND&STOP))
	   {
	    delay_nus(250);
		if(!(PIND&STOP))
		{
		 flag^=0x01;
		 }
	   }
	  //VOLUP鍵按下
	  if(!(PIND&VOLDOWN))  
	   {
	    delay_nus(250);
	    if(!(PIND&VOLDOWN))  
		  {
		  vol=vol+((uint)(2<<8)+2);
		   if(vol>=0xF0F0) vol=0xF0F0; 
	       else vs1011_cmd_write(0x0b,vol);    //每次左右聲道VOL減2
		  }
	   }
	  //VOLDOWN鍵按下
	  if(!(PIND&VOLUP)) 
	    {
		delay_nus(250);
		if(!(PIND&VOLUP)) 
		  {
		   vol=vol-((uint)(2<<8)+2);
		   if(vol<=0x0505) vol=0x0505;
		   else vs1011_cmd_write(0x0b,vol);   //每次左右聲道VOL加2
	      }
		}
	   //NEXT鍵按下
	  if(!(PIND&NEXTSONG)) 
	    {
		delay_nus(250);		
		if(!(PIND&NEXTSONG))  goto NEXT;       //跳到下一首歌曲
	    }
	    //PREV鍵按下
	  if(!(PIND&PREVSONG)) 
	    {
		delay_nus(250);
		if(!(PIND&PREVSONG))
		  {
		  t=t-2;goto NEXT;  //返回前一首歌曲
	      }
		}
		
	 	
		 data_pointer=0; 
        while(data_pointer<512)
        {    
            if(PINB&MP3_DATA_REQ)
               {
                 for(n=0;n<32;n++)
		           {
                    vs1011_data_write(BUFFER[data_pointer]);
                    data_pointer++;   
   	               }
				}
	     if (data_pointer==511) break;   //如果現在的數據不夠了，則跳出來
	     }
	}
	NextCluster = fatNextCluster(NextCluster);
	if (NextCluster >=(CLUST_RSRVD&FAT_MASK))break;
	}
 NEXT: delay_nus(3);  /* 下一首歌曲*/
	
}