main.c

基于AT89C51SND1C的MP3源代码

#include <stdio.h>
#include <string.h>
#include "..\Inc\AT8xC51SND1.h"
#include "..\Inc\GLOBAL.h"
#include "..\Inc\CHIPSOURCE.h"
#include "..\Inc\COMMON.h"
#include "..\Inc\IDEIO.h"
#include "..\Inc\FAT.h"
#include "..\Inc\MP3DECODER.h"
#include "..\Inc\LCD.h"
#include "..\Inc\USB.h"
//#include "mp3player.c"

#define DEFAULT_PARTITION			0
#define ISNUMBER(X)					(X>='0'&&X<='9')?1:0

extern xdata BYTE CommandBuffer[128];

xdata struct DirEntryPointStr MP3PlayDirPoint;
xdata BYTE filename[128];

void InitDisk(void);
void ListDisk(void);


void InitDisk(void)
{
	if (MP3.Playing) {printf("播放状态该功能禁用!\n");return;}
	printf(" 初始化IDE...");
	IDEInit(MainBuffer[0].DATA);
	if (IDE.Devices) printf("ok!\n\n"); else {printf("error!\n\n");return;}
	ListDisk();
}


void ListDisk(void)
{
	if (IDE.Devices)
	{
		printf(" 发现 %bd 个IDE设备!\n",IDE.Devices);
		printf(" 驱动器   总扇区数      总字节数\n");
		printf(" ------ ------------ ---------------\n");
		printf("      1 %12lu %15lu\n",IDE.IDEDevice[0].TotalSectors,IDE.IDEDevice[0].TotalSectors*512);
		if (IDE.Devices==2)
			printf("      1 %12lu %15lu\n",IDE.IDEDevice[1].TotalSectors,IDE.IDEDevice[2].TotalSectors*512);
		printf("\n");
	 }
	 else
	 	printf(" 错误!IDE设备未初始化,请先执行INIT DISK命令.\n\n");
}

void MountDisk(void)
{
	data BYTE n;

	if (MP3.Playing) {printf("播放状态该功能禁用!\n");return;}
	if (CommandBuffer[11]=='1') n=1;
	else if (CommandBuffer[11]=='2') n=2;
	else {printf(" 格式:MOUNT DISK [1|2]\n\n"); return;}

	if (IDE.Devices&n)
	{
		if (n==1) IDESetCurrentDevice(IDE_DEVICE_MASTER);
		else IDESetCurrentDevice(IDE_DEVICE_SLAVE);
		printf(" 当前驱动器:%bd\n 初始化FAT文件系统...",(IDE.Devices&0xf0)>>4);
		FATInit();
		FATSetStorageMedia(FAT_MEDIA_TYPE_HDD);
		FATGetPartitions();
		printf("ok!\n\n");
	}
	else printf(" 未找到驱动器\n\n");
}

void ListDrive(void)
{
	BYTE Part,i;

	if (MP3.Playing) {printf("播放状态该功能禁用!\n");return;}
	printf(" 当前驱动器:%bd\n",(IDE.Devices&0xf0)>>4);
	printf(" 总分区数:%bd\n",StorageMedia.TotalPartitions);
	
	Part=StorageMedia.CurrentPartition;
	for(i=0;i<StorageMedia.TotalPartitions;i++)
		FATMountPartition(i);
	if (Part!=255)	
		FATMountPartition(Part);
}

void MountDrive(void)
{
	BYTE n;
	BYTE temp[3];

	if (MP3.Playing) {printf("播放状态该功能禁用!\n");return;}
	n=strlen(CommandBuffer);
	if ((n==13&&ISNUMBER(CommandBuffer[12]))||(n==14&&ISNUMBER(CommandBuffer[12])&&ISNUMBER(CommandBuffer[13])))
	{
		for(n=12;n<15;n++)
			temp[n-12]=CommandBuffer[n];
		n=(BYTE)atoi(temp);

		if (n>=0&&n<StorageMedia.TotalPartitions)
		{
			FATMountPartition(n);
			printf(" 当前分区:%bd\n\n",StorageMedia.CurrentPartition);
		}
		else
			printf(" 分区号错误!\n\n");
	}
	else {printf(" 格式:MOUNT DRIVE [分区号]\n\n"); return;}
}

void Dir(void)
{
	BYTE filename[128];
	struct DirEntryPointStr temp;
	
	if (MP3.Playing) {printf("播放状态该功能禁用!\n");return;}
	if (StorageMedia.CurrentPartition==255) {printf("未加载任何分区，请先用MOUNT DRIVE命令加载分区.\n"); return;}
	temp=FAT.DirEntryPoint;

	do
	{
		FATGetFileName(filename,&(FAT.DirEntryPoint));
		if (FATIsDirectory(&(FAT.DirEntryPoint))) printf("[%s]\n",filename);else printf("%s\n",filename);
	}while(FATNextEntry(&(FAT.DirEntryPoint)));
	FAT.DirEntryPoint=temp;
}

void Cd(void)
{
	BYTE i=3;
	BYTE filename[128];
	
	struct DirEntryPointStr temp;

	if (MP3.Playing) {printf("播放状态该功能禁用!\n");return;}
	if (StorageMedia.CurrentPartition==255) {printf("未加载任何分区，请先用MOUNT DRIVE命令加载分区.\n"); return;}
	temp=FAT.DirEntryPoint;

	while(CommandBuffer[i]) {CommandBuffer[i-3]=CommandBuffer[i];i++;}
	CommandBuffer[i-3]=0;
	do
	{
		FATGetFileName(filename,&(FAT.DirEntryPoint));
		if (strcmp(filename,CommandBuffer)==0) {i=0; break;}
	}while(FATNextEntry(&(FAT.DirEntryPoint)));

	if (i)
		printf("目录\"%s\"未找到.",CommandBuffer);
	else
		if (FATIsDirectory(&(FAT.DirEntryPoint))) {FATChangeDirectory(&(FAT.DirEntryPoint));return;}
		else printf("\"%s\"不是一个目录.",CommandBuffer);

	FAT.DirEntryPoint=temp;
}

void Play(void)
{

	BYTE i=3;
	BYTE filename[128];
	
	struct DirEntryPointStr temp;

	if (StorageMedia.CurrentPartition==255) {printf("未加载任何分区，请先用MOUNT DRIVE命令加载分区.\n"); return;}
	temp=FAT.DirEntryPoint;

	while(CommandBuffer[i]) {CommandBuffer[i-5]=CommandBuffer[i];i++;}
	CommandBuffer[i-5]=0;
	do
	{
		FATGetFileName(filename,&(FAT.DirEntryPoint));
		if (strcmp(filename,CommandBuffer)==0) {i=0; break;}
	}while(FATNextEntry(&(FAT.DirEntryPoint)));

	if (i)
		printf("文件\"%s\"未找到.",CommandBuffer);
	else
		if (!FATIsDirectory(&(FAT.DirEntryPoint)))
		{
			MP3PlayDirPoint.ParentDirEntryClus=FAT.DirEntryPoint.ParentDirEntryClus;
			MP3PlayDirPoint.CurrentDirEntryClus=FAT.DirEntryPoint.CurrentDirEntryClus;
			MP3PlayDirPoint.CurrentClus=FAT.DirEntryPoint.CurrentClus;
			MP3PlayDirPoint.CurrentOffset=FAT.DirEntryPoint.CurrentOffset;
			MP3.File=FATOpenFile(&MP3PlayDirPoint);
			LoadMP3Data(MP3.File);
			printf(" 播放\"%s\"\n",CommandBuffer);
			return;
		}
		else printf("\"%s\"是一个目录.",CommandBuffer);
	FAT.DirEntryPoint=temp;
}

void Stop(void)
{
	MP3.Playing=0;
	FATCloseFile(MP3.File);
}
void Pause(void)
{
	CLEAR_BIT_6(AUDCON1);
}

void GoOn(void)
{
	SET_BIT_6(AUDCON1);
}

void Bass(void)
{
	BYTE i,temp[4];

	for(i=5;i<9;i++)
		temp[i-5]=CommandBuffer[i];

	if (strcmp(temp,"ON")==0)
	{
		SET_BIT_6(MP3CON);
		printf(" 重低音开\n");
	}
	else if(strcmp(temp,"OFF")==0)
	{
		CLEAR_BIT_6(MP3CON);
		printf("重低音关\n");
	}
}

void Volume(BYTE m)
{
	BYTE n,temp[3];

	n=strlen(CommandBuffer);
	if ((n==6&&ISNUMBER(CommandBuffer[5]))||(n==7&&ISNUMBER(CommandBuffer[5])&&ISNUMBER(CommandBuffer[6])))
	{
		for(n=5;n<8;n++)
			temp[n-5]=CommandBuffer[n];
		n=(BYTE)atoi(temp);
		printf("vol:%bd\n",n);
		if (n>=0&&n<32)
		{
			if (m==0)
			{
				MP3VOL=n;
				printf("左声道音量:%bd\n",MP3VOL);
			}
			else if(m==1)
			{
				MP3VOR=n;
				printf("右声道音量:%bd\n",MP3VOR);
			}
			else
			{
				MP3VOL=n;
				MP3VOR=n;
				printf("左声道音量:%bd 右声道音量:%bd\n",MP3VOL,MP3VOR);
			}
		}
	}
}


void main(void)
{
	data  BYTE cmd;
//	xdata BYTE function=0;

	P5=0;
	EA=1;
	memset((void *)&IDE,0,sizeof(struct IDEStr));
	memset((void *)&StorageMedia,0,sizeof(struct StorageMediaStr));
	StorageMedia.CurrentPartition=255;

	//初始化
	InitPLL();
	InitUART();
	InitKEY();
//	InitTimer0();
	InitMP3Decoder(&MP3PlayDirPoint,filename);
	
	PrintLogo();

	while(1)
	{
		cmd=AcceptCmd();
		switch(cmd)
		{
			case 0:		Help();			break;
			case 1:		InitDisk();		break;
			case 2:		ListDisk();		break;
			case 3:		MountDisk();	break;
			case 4:		ListDrive();	break;
			case 5:		MountDrive();	break;
			case 6:		Dir();			break;
			case 7:		Cd();			break;
			case 8:		Play();			break;
			case 9:		Stop();			break;
			case 10:	Pause();		break;
			case 11:	GoOn();			break;
			case 12:	Volume(0);		break;
			case 13:	Volume(1);		break;
			case 14:	Volume(2);		break;
			case 15:	Bass();			break;
		}
	}	

	FATInit();
	FATSetStorageMedia(FAT_MEDIA_TYPE_HDD);
	FATGetPartitions();
	printf("Total Partitions:%bd\n",StorageMedia.TotalPartitions);
	FATMountPartition(DEFAULT_PARTITION);
	if (FATErrorCode==0)
		printf("Mount Partition %bd OK\n",DEFAULT_PARTITION);
	else
	{
		printf("Mount Partition %bd Error\n");
		while(1);
	}




}