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上传时间: 2011-02-23
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12864 C程序设计 #include __CONFIG(0x1832); //芯片配置字，看门狗关，上电延时开，掉电检测关，低压编程关，加密，4M晶体HS振荡 #define rs RA5 //命令/数据选择 #define rw RA4 //读/写选择 #define e RA3 //使能 #define psb RA2 //8位/4位并口选择 #define rst RA0 //复位 #define nop() asm("nop") const unsigned char TAB1[ ]={ //定义显示图片的数据表 0X1F,0XFF,0XFF,0XFF,0XFF,0XFF,0XFF,0XFF,0XFF,0XFF,0XFF,0XFF,0XFF,0XC0,0X00,0X00, 0X18,0XFC,0XB7,0X80,0X00,0X00,0X00,0X00,0X00,0X00,0X03,0XFF,0XFF,0XE0,0X00,0X00, 0X1E,0X7F,0X0C,0X00,0X00,0X07,0XFF,0XFF,0X80,0X00,0X0F,0XF8,0X7F,0XE0,0X03,0XC0, 0X1F,0XE7,0X80,0X00,0X00,0X7F,0XFF,0XFF,0XC0,0X00,0X7F,0XE1,0XFF,0XE0,0X0C,0X60, 0X1F,0X9B,0XE0,0X00,0X01,0XFF,0XFF,0XFF,0XF0,0X01,0X80,0X07,0XFF,0XE0,0X0C,0X60, 0X1F,0XCF,0XE0,0X00,0X1F,0XFF,0XFF,0XFF,0XF8,0X01,0X00,0X1F,0XFF,0XE0,0X0C,0X60, 0X13,0XE4,0XF0,0X00,0X7F,0XFF,0XFF,0XFF,0XFE,0X00,0X00,0XFF,0X0E,0X20,0X0C,0X60, 0X10,0XF0,0XF0,0X00,0XFF,0XFE,0XFF,0XFF,0XFF,0X00,0X00,0XF8,0X0E,0X20,0X0C,0X60, 0X1C,0X7C,0X38,0X01,0XEF,0XF4,0X0F,0XFF,0XFF,0X80,0X00,0X00,0X7F,0XE0,0X0C,0X60, 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0X1E,0X3E,0X73,0X40,0X03,0X80,0X0F,0XFF,0X9F,0X80,0X00,0XF1,0XF0,0X60,0X0D,0X60, 0X18,0X7C,0XF6,0X20,0X01,0XE0,0X3F,0XFE,0X3F,0XE0,0X00,0X78,0XFE,0X60,0X0C,0X60, 0X11,0XFB,0XE6,0X40,0X01,0XFF,0XFF,0XFC,0X7F,0XFC,0X08,0X3C,0X7F,0XE0,0X0C,0X60, 0X1F,0XF7,0XFE,0X40,0X02,0XFF,0XFF,0XF9,0XFF,0XFF,0X00,0X0F,0X3F,0XE0,0X06,0XC0, 0X1F,0XFF,0XFC,0X88,0X06,0XFF,0XFD,0XF3,0XFF,0XFF,0XC1,0X8F,0X9F,0XE0,0X03,0X80, 0X1F,0XFF,0XB9,0X38,0X0E,0XFE,0X71,0XE7,0XFF,0XFF,0XE8,0XC3,0XEF,0XE0,0X00,0X00, 0X0F,0XFF,0XFF,0XFF,0XFF,0XFF,0XFF,0XFF,0XFF,0XFF,0XFF,0XFF,0XFF,0XC0,0X00,0X00, }; unsigned int lcd_x; //X地址 unsigned int lcd_y; //Y地址 bit busy; //忙标志位 void init(); //系统初始函数 void lcd_init(); //LCD初始函数 void clear_p(); //清屏函数 void han_wr2a(); //写函数 void wr_zb(); //写准备函数 void qushu(); //查表函数 void send_d(unsigned char x); //写一字节数据函数 void send_i(unsigned char x); //写一字节命令函数 void chk_busy(); //查LCD忙函数 void delay(); //------------------------------------------- void main() { init(); //系统初始化 lcd_init(); //LCD初始化 clear_p(); //清除显示 han_wr2a(); //写数据到LCD显示 while(1); //停机 } //------------------------------------------- void init() { TRISA=0X00; //设置A口为输出 TRISD=0X00; //设置D口为输出 ADCON1=0X06; //设置A口为普通IO口 } //------------------------------------------- void lcd_init() { rst=0; //复位LCD delay(); rst=1; //LCD正常工作 nop(); psb=1; //8位并行通信 send_i(0x30); //基本操作指令 send_i(0x01); //关显示 send_i(0x06); //指定在写入或读取时，光标的移动方向 send_i(0x0c); //开显示，关光标，不闪烁 } //------------------------------------------- void han_wr2a() { qushu(); //查表取数送显示 } //------------------------------------------- void wr_zb() { send_i(0x34); //扩展操作指令 send_i(lcd_y); //设置Y地址 send_i(lcd_x); //设置X地址 send_i(0x30); //基本操作指令 } //------------------------------------------- void clear_p() { send_i(0x1); //清除显示 send_i(0x34); //扩展操作指令 send_i(0x30); //基本操作指令 } //------------------------------------------ void qushu() { int i,j,k,temp,temp1; //定义临时变量 temp=0; //查表偏移地址 lcd_x=0x80; //上半屏X地址80H for(i=2;i>0;i--) //共两屏 { lcd_y=0x80; //每一行的Y地址80H（即顶格显示） for(j=0x20;j>0;j--) //每半屏共20H行 { wr_zb(); //写准备（设置X地址和Y地址） for(k=0x10;k>0;k--) //每一行16字节（因为顶格写） { temp1=TAB1[temp]; //查表获取显示数字 send_d(temp1); //送LCD显示 temp++; //查表偏移地址+1 } lcd_y++; //送下一行数据 send_i(0x36); //扩展指令操作：图形显示开 send_i(0x30); //基本指令操作 } // send_i(0x36); // send_i(0x30); lcd_x=0X88; //下半屏X地址 } } //------------------------------------------- void send_d(unsigned char x) { chk_busy(); //判断LCD是否忙 rs=1; //总线上是数据 rw=0; //写操作 PORTD=x; //数据送总线 e=1; //使能 nop(); nop(); nop(); e=0; } //-------------------------------------------- void send_i(unsigned char x) { chk_busy(); //判断忙信号 rs=0; //总线上是命令 rw=0; //写操作 PORTD=x; //数据送总线 e=1; //使能 nop(); nop(); nop(); e=0; } //------------------------------------------- void chk_busy() { busy=1; //先置忙信号 TRISD=0XFF; //更改总线方向为输入 rs=0; //总线上为命令 rw=1; //读操作 while(busy) { nop(); nop(); nop(); e=1; nop(); nop(); nop(); if(!RD7) busy=0; //RD7为0表示LCD空闲 nop(); nop(); nop(); e=0; } e=0; TRISD=0X00; //总线还原为输出 } //------------------------------------------- void delay() { int i; for(i=0;i<5000;i++) {;} } ...展开收缩
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