//code 字符指针开始 //从字库中查找出字模 //code 字符串的开始地址,GBK码 //mat 数据存放地址 (size/8+((size%8)?1:0))*(size) bytes大小 //size:字体大小 void Get_HzMat(unsigned char *code,unsigned char *mat,u8 size) { unsigned char qh,ql; unsigned char i; unsigned long foffset; u8 csize=(size/8+((size%8)?1:0))*(size);//得到字体一个字符对应点阵集所占的字节数 qh=*code; ql=*(++code); if(qh<0x81||ql<0x40||ql==0xff||qh==0xff)//非 常用汉字 { for(i=0;i<csize;i++)*mat++=0x00;//填充满格 return; //结束访问 } if(ql<0x7f)ql-=0x40;//注意! else ql-=0x41; qh-=0x81; foffset=((unsigned long)190*qh+ql)*csize; //得到字库中的字节偏移量 switch(size) { case 12: W25QXX_Read(mat,foffset+ftinfo.f12addr,csize); break; case 16: W25QXX_Read(mat,foffset+ftinfo.f16addr,csize); break; case 24: W25QXX_Read(mat,foffset+ftinfo.f24addr,csize); break; } }
w_int32_t spi_flash_read(w_blkdev_s *dev,w_addr_t addr,w_uint8_t *buf,w_int32_t blkcnt) { w_int32_t i; w_uint8_t *start; start = (w_uint8_t *)((dev->blkaddr + addr) * dev->blksize); for(i = 0;i < blkcnt;i ++) W25QXX_Read(buf,(w_uint32_t)(start + i * dev->blksize),dev->blksize); return W_ERR_OK; }
//初始化字体 //返回值:0,字库完好. // 其他,字库丢失 u8 font_init(void) { u8 t=0; W25QXX_Init(); while(t<10)//连续读取10次,都是错误,说明确实是有问题,得更新字库了 { t++; W25QXX_Read((u8*)&ftinfo,FONTINFOADDR,sizeof(ftinfo));//读出ftinfo结构体数据 if(ftinfo.fontok==0XAA)break; delay_ms(20); } if(ftinfo.fontok!=0XAA)return 1; return 0; }
void W25QXX_Write(u8* pBuffer,u32 WriteAddr,u16 NumByteToWrite) { u32 secpos; u16 secoff; u16 secremain; u16 i; u8 * W25QXX_BUF; W25QXX_BUF=W25QXX_BUFFER; secpos=WriteAddr/4096;//扇区地址 secoff=WriteAddr%4096;//在扇区内的偏移 secremain=4096-secoff;//扇区剩余空间大小 //printf("ad:%X,nb:%X\r\n",WriteAddr,NumByteToWrite);//测试用 if(NumByteToWrite<=secremain)secremain=NumByteToWrite;//不大于4096个字节 while(1) { W25QXX_Read(W25QXX_BUF,secpos*4096,4096);//读出整个扇区的内容 for(i=0;i<secremain;i++)//校验数据 { if(W25QXX_BUF[secoff+i]!=0XFF)break;//需要擦除 } if(i<secremain)//需要擦除 { W25QXX_Erase_Sector(secpos);//擦除这个扇区 for(i=0;i<secremain;i++) //复制 { W25QXX_BUF[i+secoff]=pBuffer[i]; } W25QXX_Write_NoCheck(W25QXX_BUF,secpos*4096,4096);//写入整个扇区 }else W25QXX_Write_NoCheck(pBuffer,WriteAddr,secremain);//写已经擦除了的,直接写入扇区剩余区间. if(NumByteToWrite==secremain)break;//写入结束了 else//写入未结束 { secpos++;//扇区地址增1 secoff=0;//偏移位置为0 pBuffer+=secremain; //指针偏移 WriteAddr+=secremain;//写地址偏移 NumByteToWrite-=secremain; //字节数递减 if(NumByteToWrite>4096)secremain=4096; //下一个扇区还是写不完 else secremain=NumByteToWrite; //下一个扇区可以写完了 } }; }
DRESULT disk_read ( BYTE pdrv, /* Physical drive nmuber (0..) */ BYTE *buff, /* Data buffer to store read data */ DWORD sector, /* Sector address (LBA) */ UINT count /* Number of sectors to read (1..128) */ ) { u8 res=0; if (!count)return RES_PARERR; switch(pdrv) { #ifdef USE_SD_CARD case SD_CARD: res=SD_ReadDisk(buff,sector,count); while(res) { SD_Init(); res=SD_ReadDisk(buff,sector,count); //printf("sd rd error:%d\r\n",res); } break; #endif case EX_FLASH: for(;count>0;count--) { W25QXX_Read(buff,sector*FLASH_SECTOR_SIZE,FLASH_SECTOR_SIZE); sector++; buff+=FLASH_SECTOR_SIZE; } res=0; break; case USB_DISK: res=USBH_UDISK_Read(buff,sector,count); break; default: res=1; } if(res==0x00)return RES_OK; else return RES_ERROR; }
//读扇区 //drv:磁盘编号0~9 //*buff:数据接收缓冲首地址 //sector:扇区地址 //count:需要读取的扇区数 DRESULT disk_read ( BYTE pdrv, /* Physical drive nmuber (0..) */ BYTE *buff, /* Data buffer to store read data */ DWORD sector, /* Sector address (LBA) */ UINT count /* Number of sectors to read (1..128) */ ) { u8 res=0; if (!count)return RES_PARERR;//count不能等于0,否则返回参数错误 switch(pdrv) { case SD_CARD://SD卡 res=SD_ReadDisk(buff,sector,count); while(res)//读出错 { SD_Init(); //重新初始化SD卡 res=SD_ReadDisk(buff,sector,count); //printf("sd rd error:%d\r\n",res); } break; #if SPIFlash case EX_FLASH://外部flash for(;count>0;count--) { W25QXX_Read(buff,sector*FLASH_SECTOR_SIZE,FLASH_SECTOR_SIZE); sector++; buff+=FLASH_SECTOR_SIZE; } res=0; break; #endif default: res=1; } //处理返回值,将SPI_SD_driver.c的返回值转成ff.c的返回值 if(res==0x00)return RES_OK; else return RES_ERROR; }
WCHAR ff_convert ( /* Converted code, 0 means conversion error */ WCHAR src, /* Character code to be converted */ UINT dir /* 0: Unicode to OEMCP, 1: OEMCP to Unicode */ ) { WCHAR t[2]; WCHAR c; u32 i, li, hi; u16 n; u32 gbk2uni_offset=0; if (src < 0x80)c = src;//ASCII,直接不用转换. else { if(dir) //GBK 2 UNICODE { ;//gbk2uni_offset=ftinfo.ugbksize/2; }else //UNICODE 2 GBK { gbk2uni_offset=0; } /* Unicode to OEMCP */ hi=ftinfo.ugbksize/2;//对半开. hi =hi / 4 - 1; li = 0; for (n = 16; n; n--) { i = li + (hi - li) / 2; W25QXX_Read((u8*)&t,ftinfo.ugbkaddr+i*4+gbk2uni_offset,4);//读出4个字节 if (src == t[0]) break; if (src > t[0])li = i; else hi = i; } c = n ? t[1] : 0; } return c; }
//更新字体文件,UNIGBK,GBK12,GBK16,GBK24一起更新 //x,y:提示信息的显示地址 //size:字体大小 //src:字库来源磁盘."0:",SD卡;"1:",FLASH盘,"2:",U盘. //提示信息字体大小 //返回值:0,更新成功; // 其他,错误代码. u8 update_font(u16 x,u16 y,u8 size,u8* src) { u8 *pname; u32 *buf; u8 res=0; u16 i,j; FIL *fftemp; u8 rval=0; res=0XFF; ftinfo.fontok=0XFF; pname=mymalloc(SRAMIN,100); //申请100字节内存 buf=mymalloc(SRAMIN,4096); //申请4K字节内存 fftemp=(FIL*)mymalloc(SRAMIN,sizeof(FIL)); //分配内存 if(buf==NULL||pname==NULL||fftemp==NULL) { myfree(SRAMIN,fftemp); myfree(SRAMIN,pname); myfree(SRAMIN,buf); return 5; //内存申请失败 } //先查找文件是否正常 strcpy((char*)pname,(char*)src); //copy src内容到pname strcat((char*)pname,(char*)UNIGBK_PATH); res=f_open(fftemp,(const TCHAR*)pname,FA_READ); if(res)rval|=1<<4;//打开文件失败 strcpy((char*)pname,(char*)src); //copy src内容到pname strcat((char*)pname,(char*)GBK12_PATH); res=f_open(fftemp,(const TCHAR*)pname,FA_READ); if(res)rval|=1<<5;//打开文件失败 strcpy((char*)pname,(char*)src); //copy src内容到pname strcat((char*)pname,(char*)GBK16_PATH); res=f_open(fftemp,(const TCHAR*)pname,FA_READ); if(res)rval|=1<<6;//打开文件失败 strcpy((char*)pname,(char*)src); //copy src内容到pname strcat((char*)pname,(char*)GBK24_PATH); res=f_open(fftemp,(const TCHAR*)pname,FA_READ); if(res)rval|=1<<7;//打开文件失败 myfree(SRAMIN,fftemp);//释放内存 if(rval==0)//字库文件都存在. { //LCD_ShowString(x,y,240,320,size,"Erasing sectors... ");//提示正在擦除扇区 for(i=0;i<FONTSECSIZE;i++) //先擦除字库区域,提高写入速度 { fupd_prog(x+20*size/2,y,size,FONTSECSIZE,i);//进度显示 W25QXX_Read((u8*)buf,((FONTINFOADDR/4096)+i)*4096,4096);//读出整个扇区的内容 for(j=0;j<1024;j++)//校验数据 { if(buf[j]!=0XFFFFFFFF)break;//需要擦除 } if(j!=1024)W25QXX_Erase_Sector((FONTINFOADDR/4096)+i); //需要擦除的扇区 } myfree(SRAMIN,buf); //LCD_ShowString(x,y,240,320,size,"Updating UNIGBK.BIN"); strcpy((char*)pname,(char*)src); //copy src内容到pname strcat((char*)pname,(char*)UNIGBK_PATH); res=updata_fontx(x+20*size/2,y,size,pname,0); //更新UNIGBK.BIN if(res){myfree(SRAMIN,pname);return 1;} //LCD_ShowString(x,y,240,320,size,"Updating GBK12.BIN "); strcpy((char*)pname,(char*)src); //copy src内容到pname strcat((char*)pname,(char*)GBK12_PATH); res=updata_fontx(x+20*size/2,y,size,pname,1); //更新GBK12.FON if(res){myfree(SRAMIN,pname);return 2;} //LCD_ShowString(x,y,240,320,size,"Updating GBK16.BIN "); strcpy((char*)pname,(char*)src); //copy src内容到pname strcat((char*)pname,(char*)GBK16_PATH); res=updata_fontx(x+20*size/2,y,size,pname,2); //更新GBK16.FON if(res){myfree(SRAMIN,pname);return 3;} //LCD_ShowString(x,y,240,320,size,"Updating GBK24.BIN "); strcpy((char*)pname,(char*)src); //copy src内容到pname strcat((char*)pname,(char*)GBK24_PATH); res=updata_fontx(x+20*size/2,y,size,pname,3); //更新GBK24.FON if(res){myfree(SRAMIN,pname);return 4;} //全部更新好了 ftinfo.fontok=0XAA; W25QXX_Write((u8*)&ftinfo,FONTINFOADDR,sizeof(ftinfo)); //保存字库信息 } myfree(SRAMIN,pname);//释放内存 myfree(SRAMIN,buf); return rval;//无错误. }