51单片机总线驱动

/************************************************发出命令控制 参数 低onedat 高twodat 命令com*************************************************/void lcd_writecom_two(uchar onedat,uchar twodat,uchar com){lcd_writedat(onedat);lcd_writedat(twodat);lcd_writecom(com);}/**********************************************一次写一个数据 对应地址指针位置**********************************************/void lcd_writedat_onebyte(uchar onedat,uchar com){lcd_writedat(onedat);lcd_writecom(com);}/**********************************************一次读一个数据 对应地址指针位置**********************************************/uchar lcd_readdat_onebyte(uchar com){uchar dat;lcd_writecom(com);dat=lcd_readdat();return dat;}/****************************************一次写n个数据 对应地址指针位置****************************************/void lcd_writedat_nbyte(uchar *dat,uchar len){lcd_writecom(0xb0);check_auto_write_busy();while(len){lcd_writedat(*dat);dat++;len--;}lcd_writecom(0xb2);}/****************************************一次读n个数据 对应地址指针位置****************************************/void lcd_readdat_nbyte(uchar *dat ,uchar len){lcd_writecom(0xb1);check_auto_read_busy();while(len){*dat=lcd_readdat();dat++;len--;}lcd_writecom(0xb2);}/************************************************清除一个点坐标 X,Y 左上角第一个点为0，0************************************************/void clear_point(uchar x,uchar y){uint addr;uchar temp1,temp2;addr=(y<<5)+(y<<3)+(x>>3);//32+8temp1=addr;//&0x00ff;temp2=addr>>8;lcd_writecom_two(temp1,temp2,0x24);lcd_writecom(0xf7-(x&0x07));}/************************************************点亮一个点 坐标 X,Y 左上角第一个点为0，0************************************************/void sel_point(uchar x,uchar y){uint addr;uchar temp1,temp2;addr=(y<<5)+(y<<3)+(x>>3);//32+8temp1=addr;//&0x00ff;temp2=addr>>8;lcd_writecom_two(temp1,temp2,0x24);lcd_writecom(0xff-(x&0x07));}/*************************************************画中等大小的点 4*4（用画点方法 效率低）*************************************************//*sel_middling(uchar x,uchar y){uint addr;uchar temp1,temp2,n;addr=y*160+(x>>1);//x/8*4;for(n=0;n<4;n++){temp1=addr%6;temp2=addr>>8;lcd_writecom_two(temp1,temp2,0x24);if(x%2){lcd_writecom(0xfb);lcd_writecom(0xfa);lcd_writecom(0xf9);lcd_writecom(0xf8);}else{lcd_writecom(0xff);lcd_writecom(0xfe);lcd_writecom(0xfd);lcd_writecom(0xfc);}addr+=40;}}*//*************************************************画中等大小的点 4*4（用读修改写 效率高）*************************************************/void sel_rmiddling(uchar x,uchar y){uint addr;uchar temp1,temp2,n,dat;addr=(y<<7)+(y<<5)+(x>>1);//x/8*4;//128+32for(n=0;n<4;n++){temp1=addr;//&0x0ff;temp2=addr>>8;lcd_writecom_two(temp1,temp2,0x24);if(x&0x01)//x%2{dat=(lcd_readdat_onebyte(0xc5))|0x0f;lcd_writedat_onebyte(dat,0xc4);}else{dat=(lcd_readdat_onebyte(0xc5))|0xf0;lcd_writedat_onebyte(dat,0xc4);}addr+=40;}}/*************************************************清楚中等大小的点 4*4（用清点方式 效率底）*************************************************//*clr_middling(uchar x,uchar y){uint addr;uchar temp1,temp2,n;addr=y*160+(x>>1);//x/8*4;for(n=0;n<4;n++){temp1=addr%6;temp2=addr>>8;lcd_writecom_two(temp1,temp2,0x24);if(x%2){lcd_writecom(0xf3);lcd_writecom(0xf2);lcd_writecom(0xf1);lcd_writecom(0xf0);}else{lcd_writecom(0xf7);lcd_writecom(0xf6);lcd_writecom(0xf5);lcd_writecom(0xf4);}addr+=40;}}*//*************************************************清楚中等大小的点 4*4（用读修改写 效率高）*************************************************/void clr_rmiddling(uchar x,uchar y){uint addr;uchar temp1,temp2,n,dat;addr=(y<<7)+(y<<5)+(x>>1);//x/8*4;//128+32for(n=0;n<4;n++){temp1=addr;//&0xff;temp2=addr>>8;lcd_writecom_two(temp1,temp2,0x24);if(x&0x01){dat=(lcd_readdat_onebyte(0xc5))&0xf0;lcd_writedat_onebyte(dat,0xc4);}else{dat=(lcd_readdat_onebyte(0xc5))&0x0f;lcd_writedat_onebyte(dat,0xc4);}addr+=40;}}/*********************************************************画8*8的大点（用画点方式 速度慢）*********************************************************//*void sel_big(uchar x,uchar y){uint addr;uchar temp1,temp2,n;addr=(y<<8)+(y<<6)+(x);//x/8*4;y*320=y*(256+64)=(y<<8)+(y<<6)for(n=0;n<8;n++){temp1=addr&0x00ff;//addr%6temp2=addr>>8;lcd_writecom_two(temp1,temp2,0x24);lcd_writecom(0xfb);lcd_writecom(0xfa);lcd_writecom(0xf9);lcd_writecom(0xf8);lcd_writecom(0xff);lcd_writecom(0xfe);lcd_writecom(0xfd);lcd_writecom(0xfc);addr+=40;}}*//*********************************************************画8*8的大点（用读改写方式 速度快）*********************************************************/void sel_rbig(uchar x,uchar y){uint addr;uchar temp1,temp2,n,dat;addr=(y<<8)+(y<<6)+(x);//x/8*4;y*320=y*(256+64)=(y<<8)+(y<<6)for(n=0;n<8;n++){temp1=addr;//&0x00ff;//addr%6temp2=addr>>8;lcd_writecom_two(temp1,temp2,0x24);//dat=(lcd_readdat_onebyte(0xc5))|0xff;dat=0xff;lcd_writedat_onebyte(dat,0xc4);addr+=40;}}