在51下的外挂硬盘和FLASH的MP3方案程序以及原理图

#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\FAT32.h" #include "..\Inc\MP3DECODER.h" #include "..\Inc\LCD.h" #include "mp3player.c" WORD test=0; xdata char filename1[100]; void main(void) { xdata WORD i,j=0; xdata BYTE key,status,f2,function=0; EA=1; //初始化 LCDInit(); LCDPrint(0,Title); InitPLL(); InitUART(); InitKEY(); // InitTimer0(); InitMP3Decoder(); IDEInit(); printf("ok\n"); printf("%bd Drivers found!\n",IDE.TotalDevices); printf("Device 0 LBA: %ld\n",IDEDevice[0].TotalSectors); printf("Device 1 LBA: %ld\n",IDEDevice[1].TotalSectors); IDESetCurrentDevice(IDE_DEVICE_MASTER); printf("Ready\n"); FAT32Init(); i=FAT32MountPartition(); printf("Mount Hard Disk Partition Table...ok\n"); i=FAT32MountVolumeID(0); printf("\nMount Hard Disk Partition P%bd...ok\n",HDD.CurrentPartition); printf("Total Size:\t%ld bytes\nFree Size:\t%ld bytes\n",FAT32DiskSize(),FAT32DiskFreeSize()); ShowDiskSize(); filename1[0]=0; Play.CurrentPoint=1; while((status=FAT32GetDirName(Play.CurrentPoint))==3) Play.CurrentPoint++; printf("\n%d\n",Play.CurrentPoint); function=1; while(1) { key=GetKey(); printf("key:%bd\n",key); switch (key) { case KEY_LEFT : FunctionProcess(function,0); break; case KEY_RIGHT : FunctionProcess(function,1); break; case KEY_UP : function--; if (function>MAX_MENU) function=MAX_MENU-1; printf("%bd,%s\n",function,MenuList[function]); LCDClearLine(0); LCDPrint(0,MenuList[function]); break; case KEY_DOWN : function=(++function)%MAX_MENU; printf("%bd,%s\n",function,MenuList[function]); LCDClearLine(0); LCDPrint(0,MenuList[function]); break; case KEY_OK : if (FAT32GetDirName(Play.CurrentPoint)==2) { strcpy((char *) filename1,(char *) LongFileName); printf("%08lx->",FAT32.CurrentDirectory); FAT32ChangeDirectory(filename1); printf("%08lx->\n",FAT32.CurrentDirectory); Play.CurrentPoint=1; while((status=FAT32GetDirName(Play.CurrentPoint))==3) Play.CurrentPoint++; LCDClearLine(1); status=FAT32GetDirName(Play.CurrentPoint); if (status==1) { printf("%bd FILE->",Play.CurrentPoint); LCDPrint(0x10,"--"); } else if (status==2) { printf("DIR->"); LCDPrint(0x10,"->"); } printf("%s\n",LongFileName); LCDPrint(0x11,LongFileName); } else { if (MP3.Playing) { if (AUDCON1&0x40) MP3DecoderControl(MP3_PAUSE,0); else MP3DecoderControl(MP3_PAUSE,1); } else { if ((status=FAT32GetDirName(Play.CurrentPoint))==0) {j=1;status=FAT32GetDirName(Play.CurrentPoint);} strcpy((char *) filename1,(char *) LongFileName); f2=FAT32OpenFile(filename1); if (f2==FAT32_ERR_FILE_OPEN_ERROR) {printf("fail to open file\n");} else { printf("open file:%s \t%ld \t%lx\n",FCB[f2].FileName,FCB[f2].Size,FCB[f2].FirstCluster); // InitMP3Decoder(); LoadMP3Data(f2); } } } break; case KEY_CANCEL : if (MP3.Playing) { MP3.Playing=0; FAT32CloseFile(MP3.File); printf("play over\n"); } else { strcpy(filename1,".. "); printf("%08lx->",FAT32.CurrentDirectory); FAT32ChangeDirectory(filename1); printf("%08lx->\n",FAT32.CurrentDirectory); Play.CurrentPoint=1; while((status=FAT32GetDirName(Play.CurrentPoint))==3) Play.CurrentPoint++; LCDClearLine(1); status=FAT32GetDirName(Play.CurrentPoint); if (status==1) { printf("%bd FILE->",Play.CurrentPoint); LCDPrint(0x10,"--"); } else if (status==2) { printf("DIR->"); LCDPrint(0x10,"->"); } printf("%s\n",LongFileName); LCDPrint(0x11,LongFileName); } break; } } }