main.c

详细介绍了关于CF卡的存储结构

#ifdef DEBUG_READ
			printf("read %x bytes\n",len);
#endif
			return 1;
		}
		else
#ifdef DEBUG_READ
			printf("lenth=%d\n",(int)lenth);
#endif
		start_clus=start_clus+i;
	}
	return 1;
}


//function:close a file,put 0xff in fat table
//return:-1 false,1 success
char CFCloseFile()
//char CloseFile(unsigned int file_handle)
{
	xdata unsigned char i;
	xdata struct sRootDir file;
	if(buf_pos!=0)
	{
		if(WriteOneSec(write_buf,(s_fileinfo.start_clustor-2)
			*bootinfo.sec_per_clust
			+(1+bootinfo.fat_size*bootinfo.fat_num+bootinfo.root_dir_size*32/512)
			+s_fileinfo.current_sector)==0)
		{
			return -1;
		}
	}
	if(ReadOneSec(s_fileinfo.file_record_sector)==0)
	{
		return -1;
	}
	for(i=0;i<32;i++)
	{
		((unsigned char*)(&file))[i]=data_buf[s_fileinfo.file_pos_in_sector*32+i];
	}
//	memcpy((unsigned char*)(&file),data_buf+s_fileinfo.file_pos_in_sector*32,32);
	file.file_size[3]=(s_fileinfo.size>>24) & 0x000000ff;
	file.file_size[2]=(s_fileinfo.size>>16) & 0x000000ff;
	file.file_size[1]=(s_fileinfo.size>>8) & 0x000000ff;
	file.file_size[0]=s_fileinfo.size & 0x000000ff;
	for(i=0;i<32;i++)
	{
		data_buf[s_fileinfo.file_pos_in_sector*32+i]=((unsigned char*)(&file))[i];
	}
	if(WriteOneSec(data_buf,s_fileinfo.file_record_sector)==0)		//put file infomation in FDT table
	{
		return -1;
	}
/*
	if(ReadOneSec((s_fileinfo.start_clustor*2)/512+1)==0)		//read one sector in Fat table area
	{
		return 0xffff;
	}
	for(i=(s_fileinfo.start_clustor*2)%512;i<(s_fileinfo.start_clustor*2)%512+2;i++)	//wrire fat table
	{
		data_buf[i]=0xff;
	}
	if(WriteOneSec(data_buf,(s_fileinfo.start_clustor*2)/512+1)==0)
	{
		return 0xffff;		//write fdt error
	}
*/
	return 1;	
}

unsigned int CFFreeSpace()
{
	static xdata unsigned int i,j;
	static xdata unsigned int free_count;
	free_count=0;
	for(i=1;i<bootinfo.fat_size+1;i++)
	{
		if(ReadOneSec(i)==0)
		{
			return 0xffff;
		}
		for(j=0;j<512;j=j+2)
		{
			if((data_buf[j]+data_buf[j+1]*256)==0)
			{
				free_count++;
			}
		}
	}
	return free_count; 
//	return free_count*bootinfo.sec_per_clust*512; 
}

//function: use to empty next fdt sector
//input:	start sector
char EmptyDirFDT(unsigned int start_sec)
{
	unsigned char i;
	unsigned int j;
	xdata unsigned char temp_buf[512];
	for(j=0;j<512;j++)
	{
		temp_buf[j]=data_buf[j];
	}
	for(j=0;j<512;j++)
	{
		data_buf[j]=0;
	}
	for(i=0;i<bootinfo.sec_per_clust;i++)
	{
		if(WriteOneSec(data_buf,start_sec+i)==0)
		{
			return -1;				
		}
	}
	for(j=0;j<512;j++)
	{
		data_buf[j]=temp_buf[j];
	}
	return 1;
}

void main()
{
	char c;
	xdata char name[8];
//	xdata struct sCIS cis;
//	xdata struct sBoot bt;
	xdata unsigned int temp;
	static unsigned int fdt_pos;
	static unsigned int fdt_record_pos;
	xdata unsigned char aaa[500],buf[600];
	static xdata unsigned char f_count='a';
	xdata unsigned int un_use;
	xdata unsigned int read_count;
	xdata unsigned int to_read;
	SystemInit();
//	puts("start!");
	while(1)
	{
		if(RI)
		{
			c=_getkey();
			switch (c)
			{
				case 'h':
					while(1)
					{
						EraseSec(0,1);
						CFInit();
						FatLinkEnd(1,6);
						DelFatRecord(2);
						ReadCIS();
						CheckCFStatu();
						WriteOneSec(BPB,0);
						ReadOneSec(0);
						FormatCF();
						CFFreeSpace();
						CFFindFileInRoot("R3000      ",&un_use,&un_use);
						CFFindFileInDir("TRIGGER    ",62,&un_use,&un_use);
						CFMakeDirectory("R3000      ",0);
						CFMakeSubDirectory("SYSINFO    ","R3000      ");
						CFDelete("R41     TXT",62,2);
						CFOpenFile(62,"R41     TXT",1);
						CFReadFile(buf,600,read_count,&to_read);
						read_count=read_count+600;
						CFWriteFile(aaa,356);
						CFCloseFile();
						CFGetBoot();
					}
					if(ReadCIS()==0)
					{
//						printf("error\n");
					}
//					for(temp=0;temp<512;temp++)
//					{
//						zxPutChar(data_buf[temp]);
//					}
					putchar(((struct sCIS*)data_buf)->cur_head_num[0]);
					putchar(((struct sCIS*)data_buf)->cur_head_num[1]);
					break;
				case 't':
					printf("test=%x\n",(int)TestRam(0x2000,0x00));
					printf("test=%x\n",(int)TestRam(0x2000,0xff));
					printf("test=%x\n",(int)TestRam(0x2000,0xAA));
					printf("test=%x\n",(int)TestRam(0x2000,0x55));
					printf("test=%x\n",TestAddr(0x2000));
					break;
				case 'f':
					printf("format.\n");
					if(FormatCF()==1)
						printf("success\n");
					else
						printf("error\n");
					break;
				case 'i':
					if(SerchFreeFDT(&fdt_pos,&fdt_record_pos,0))
					{
						printf("\n");
						printf("FDT=%x\n",(unsigned int)fdt_pos);
						printf("pos=%x\n",(unsigned int)fdt_record_pos);
					}
					else
					{
						printf("No free s");
					}
					break;
				case '1':
					printf("CFstatu:%x\n",CheckCFStatu());
					break;
				case 'e':
					printf("CFerror:%x\n",CF_ERROR);
					break;
				case '2':
					printf("CF ADDR:%x\n",CF_ID);
					break;
				case '3':
					printf("sec num:\n");
					scanf("%d",&temp);
					ReadOneSec(temp);
					printf("finish\n");
					break;
				case '4':
					for(temp=0;temp<512;temp++)
					{
						zxPutChar(data_buf[temp]);	
					}
					break;
				case '5':
					PrintBoot();
//					if(WriteOneSec(BPB,512)==1)
//						printf("write finished\n");
					break;
				case '6':
					temp=CFFindFileInRoot("R3000      ",&un_use,&un_use);
					printf("\nR3000=%x\n",temp);
					if(temp==0xffff)
						break;
					temp=CFFindFileInDir("TRIGGER    ",temp,&un_use,&un_use);
					temp=(temp-2)*bootinfo.sec_per_clust
						+(bootinfo.fat_num*bootinfo.fat_size
						+bootinfo.root_dir_size*32/512+1);  
					printf("\nTRIGGER=%x\n",temp);
					if(CFOpenFile(temp,"R41     TXT",1)==0xffff)
						printf("open fail\n");
					printf("open\n");
					f_count='a';
//					ReadCIS();
					break;
				case 'w':
					
					break;
				case '9':
					temp=CFFindFileInRoot("R3000      ",&un_use,&un_use);
//					temp=CFFindFileInRoot("R4000      ",&un_use,&un_use);
					printf("\nR3000=%x\n",temp);
					if(temp==0xffff)
						break;
					temp=CFFindFileInDir("TRIGGER    ",temp,&un_use,&un_use);
					temp=(temp-2)*bootinfo.sec_per_clust
						+(bootinfo.fat_num*bootinfo.fat_size
						+bootinfo.root_dir_size*32/512+1);  
					printf("\nTRIGGER=%x\n",temp);
//					printf("\nR4000=%x\n",temp);
					if(temp==0xffff)
						break;
					if(CFOpenFile(temp,"R41     TXT",2)==0xffff)
						printf("open fail\n");
					else
						printf("open\n");
//					ReadCIS();
					read_count=0;
					break;
				case 'r':
					temp=CFReadFile(buf,600,read_count,&to_read);
					if(temp==-1)
					{
						printf("read error\n");
					}
					else if(temp==-2)
					{
						printf("read finish\n");	
					}
					else
					{
						if(to_read==600)
						{
							for(temp=0;temp<600;temp++)
							{
								putchar((char)buf[temp]);
							}
						}
						else
						{
							for(temp=0;temp<to_read;temp++)
							{
								putchar((char)buf[temp]);
							}
						}
					}
					read_count=read_count+600;
					break;
				case 'a':
					temp=CFFindFileInRoot("R4000      ",&un_use,&un_use);
					printf("\nR4000=%x\n",temp);
					if(temp==0xffff)
						break;
					temp=CFFindFileInDir("TRIGGER    ",temp,&un_use,&un_use);
					temp=(temp-2)*bootinfo.sec_per_clust
						+(bootinfo.fat_num*bootinfo.fat_size
						+bootinfo.root_dir_size*32/512+1);  
					printf("\nTRIGGER=%x\n",temp);
					if(CFOpenFile(temp,"R41     TXT",2)==0xffff)
						printf("open false\n");
					else
						printf("opened add\n");
					f_count='a';
					break;
				case 'p':
					for(temp=0;temp<356;temp++)
					{
						aaa[temp]=(char)f_count;
					}
					f_count++;
					if(CFWriteFile(aaa,356)==1)
					{
						putchar('w');
					}
					else
					{
						putchar('e');
					}
					break;
				case 'c':
					if(CFCloseFile()==1)
						printf("closed\n");
					else
						printf("close fail\n");
					break;
				case '7':
					CFGetBoot();					
					if(ReadOneSec(bootinfo.fat_size*2+1)==0)
					{
						printf("read error\n");
					}
					ListFile();
					printf("\nlist end\n");		
					break;
				case '8':
//					printf("input filename:");
//					gets(name,9);
					name[0]='C';
					name[1]='F';
					name[2]=' ';
					name[3]=' ';
					name[4]=' ';
					name[5]=' ';
					name[6]=' ';
					name[7]=' ';
					printf("\nstart sector:%x",CFFindFileInRoot(name,&un_use,&un_use));
					name[0]='I';
					name[1]='D';
					name[2]='W';
					name[3]='R';
					name[4]=' ';
					name[5]=' ';
					name[6]=' ';
					name[7]=' ';
					printf("\nCF start sector:%x",CFFindFileInRoot(name,&un_use,&un_use));
					break;
//				case 'a':
//					printf("boot size:%d",sizeof(bt));
//					printf("CIS size:%d",sizeof(cis));
//					reg_select=!reg_select;
//					printf("AUXR:%x",AUXR);
//					break;
				case 'm':
					if(CFMakeDirectory("R3000      ",0))
					{
						puts("R3000");
					}
					else
					{
						puts("R3000 md e!\n");
						break;
					}

					if(CFMakeSubDirectory("SYSINFO    ","R3000      "))
					{
						puts("sysinfo");	
					}

					if(CFMakeSubDirectory("OPERATE    ","R3000      "))
					{
						puts("operate");	
					}
					if(CFMakeSubDirectory("CONFIG     ","R3000      "))
					{
						puts("CONFIG");	
					}
					if(CFMakeSubDirectory("ALARM      ","R3000      "))
					{
						puts("ALARM");	
					}
					if(CFMakeSubDirectory("REPORT     ","R3000      "))
					{
						puts("REPORT");	
					}
					if(CFMakeSubDirectory("TRIGGER    ","R3000      "))
					{
						puts("TRIGGER");	
					}
					if(CFMakeSubDirectory("HISTORY    ","R3000      "))
					{
						puts("HISTORY");	
					}
					if(CFMakeDirectory("R4000      ",0))
					{
						puts("R4000");
					}
					else
					{
						puts("R4000 md e\n");
						break;
					}

					if(CFMakeSubDirectory("SYSINFO    ","R4000      "))
					{
						puts("sysinfo");	
					}

					if(CFMakeSubDirectory("OPERATE    ","R4000      "))
					{
						puts("operate");	
					}
					if(CFMakeSubDirectory("CONFIG     ","R4000      "))
					{
						puts("CONFIG");	
					}
					if(CFMakeSubDirectory("ALARM      ","R4000      "))
					{
						puts("ALARM");	
					}
					if(CFMakeSubDirectory("REPORT     ","R4000      "))
					{
						puts("REPORT");	
					}
					if(CFMakeSubDirectory("TRIGGER    ","R4000      "))
					{
						puts("TRIGGER");	
					}
					if(CFMakeSubDirectory("HISTORY    ","R4000      "))
					{
						puts("HISTORY");	
					}
					break;
				case 'd':
					temp=CFFindFileInRoot("R3000      ",&un_use,&un_use);
					printf("\nR3000=%x\n",(unsigned int)temp);
					if(temp==0xffff)
						break;
					temp=CFFindFileInDir("TRIGGER    ",temp,&un_use,&un_use);
					temp=(temp-2)*bootinfo.sec_per_clust
						+(bootinfo.fat_num*bootinfo.fat_size
						+bootinfo.root_dir_size*32/512+1);
					printf("\nTRIGGER=%x\n",temp);
					if(CFDelete("R41     TXT",temp,2)==1)
					{
						printf("del suc\n");
					}
					break;
				case 's':
					printf("Free:%x\n",CFFreeSpace());
					break;
				default:break;
			}
		}
	}

}