stc12c5a60s2头文件.rar_STC12 1602_lcd12864_stc12_stc12 1602_头文件

#include"lcd12864.h" sbit LCD12864_RS=P3^5; //寄存器选择输入 sbit LCD12864_RW=P3^6; //液晶读/写控制 sbit LCD12864_EN=P3^4; //液晶使能控制 sbit LCD12864_PSB=P3^7; //串/并方式控制 unsigned char code tab1[1024]; bit lcd12864_busy() //判断是否忙 { bit result; LCD12864_RS=0; LCD12864_RW=1; LCD12864_EN=1; delay_us(6); result = (bit)(P0&0x80); //为1，不接受任何指令和数据 LCD12864_EN = 0; return(result); } void lcd12864_write_cmd(unsigned char cmd) //写指令 { while(lcd12864_busy()); LCD12864_RS = 0; LCD12864_RW = 0; LCD12864_EN = 0; _nop_(); _nop_(); P0 = cmd; delay_us(6); LCD12864_EN = 1; delay_us(6); LCD12864_EN = 0; } void lcd12864_write_dat(unsigned char dat) //写数据 { while(lcd12864_busy()); LCD12864_RS = 1; LCD12864_RW = 0; LCD12864_EN = 0; P0 = dat; delay_us(6); LCD12864_EN = 1; delay_us(6); LCD12864_EN = 0; } unsigned char lcd12864_read_dat() { unsigned char shuju; lcd12864_busy(); P0=0xff; LCD12864_RS = 1; LCD12864_RW = 1; LCD12864_EN = 0; delay_us(6); LCD12864_EN = 1; shuju = P0; delay_us(6); LCD12864_EN=0; return(shuju); } void lcd12864_init() { LCD12864_PSB = 1; //并口方式 lcd12864_write_cmd(0x30); //基本指令操作 delay_ms(5); lcd12864_write_cmd(0x0C); //显示开，关光标 delay_ms(5); lcd12864_write_cmd(0x01); //清除LCD的显示内容 delay_ms(5); } void lcd12864_print(uchar X,uchar Y) //设定显示位置 { uchar pos; if (X==0) {X=0x80;} else if (X==1) {X=0x90;} else if (X==2) {X=0x88;} else if (X==3) {X=0x98;} pos = X+Y ; lcd12864_write_cmd(pos); //显示地址 } /*字符显示函数*/ void lcd12864_dis_str(unsigned char x,unsigned char y,unsigned char *str) { lcd12864_print(x,y); //设置显示位置 while(*str!= '\0') //显示字符 { lcd12864_write_dat(*str); str++; } } /*数值显示函数*/ void lcd12864_dis_dat(unsigned char x,unsigned char y,int dat,unsigned char length) { unsigned char dat1; lcd12864_print(x,y); //设置显示位置 if(dat<0) { lcd12864_write_dat('-'); dat=-dat; } else lcd12864_write_dat(' '); dat1=dat/10000; if(length>4) lcd12864_write_dat(dat1+0x30); dat1=dat/1000%10; if(length>3) lcd12864_write_dat(dat1+0x30); dat1=dat/100%10; if(length>2) lcd12864_write_dat(dat1+0x30); dat1=dat/10%10; if(length>1) lcd12864_write_dat(dat1+0x30); dat1=dat%10; lcd12864_write_dat(dat1+0x30); } /*绘图显示函数*/ void lcd12864_huitu(unsigned char *address) //绘图显示 { unsigned char i,j,k,n=0x80; lcd12864_write_cmd(0x34); //打开扩展指令集 for(i=0;i<2;i++) { for(j=0;j<32;j++) { lcd12864_write_cmd(0x80+j); lcd12864_write_cmd(n); for(k=0;k<16;k++) { lcd12864_write_dat(0x00); } } n=0x88; } lcd12864_write_cmd(0x36); //打开绘图显示 lcd12864_write_cmd(0x30); //回到基本指令集 n=0x80; lcd12864_write_cmd(0x34); //打开扩展指令集 for(i=0;i<2;i++) { for(j=0;j<32;j++) { lcd12864_write_cmd(0x80+j); lcd12864_write_cmd(n); for(k=0;k<16;k++) { lcd12864_write_dat(*address++); } } n=0x88; } lcd12864_write_cmd(0x36); //打开绘图显示 lcd12864_write_cmd(0x30); //回到基本指令集 } void lcd12864_clear() //打点前清除绘图数据 { lcd12864_huitu(tab1); } /*画点函数*/ //左上角为（0，0）,右下角为（63,127） //type：0为白色;1 为黑色，2为取反 void lcd12864_drawdot(unsigned char x,unsigned char y,unsigned char type) { unsigned char X,Y,k; //X存储行地址，Y存储列地址,k存储点在字中的位置从左至右为0~15 unsigned char DH,DL; //存放读出数据的高字节和低字节 lcd12864_write_cmd(0x34); //扩展指令 lcd12864_write_cmd(0x36); //扩展指令加绘图模块 if(y >= 0 && y <= 63 && x >= 0 && x <= 127) //确定所画点的地址行与列地址 { if(y < 32) { X = 0x80 + (x >> 4); Y = 0x80 + y; } else { X = 0x88 + (x >> 4); Y = 0x80 + (y - 32); } lcd12864_write_cmd(Y); //写入所确定的点的行位地址 lcd12864_write_cmd(X); //写入所确定的点的列字地址 lcd12864_read_dat(); //假读 DH = lcd12864_read_dat(); //读高字节 DL = lcd12864_read_dat(); //读低字节 k = x % 16; //余数为点在字中的位置 switch(type) //画点类型，1黑、0白、2取反 { case 0: if(k < 8) //点在高字节 DH &= ~(0x01 << (7 - k)); //修改该点同时保持其他位不变 else //点在低字节 DL &= ~(0x01 << (7 - (k % 8))); //修改该点同时保持其他位不变 break; case 1: if(k < 8) DH |= (0x01 << (7 - k)); //修改该点同时保持其他位不变 else DL |= (0x01 << (7 - (k % 8))); //修改该点同时保持其他位不变 break; case 2: if(k < 8) DH ^= (0x01 << (7 - k)); //修改该点同时保持其他位不变 else DL ^= (0x01 << (7 - (k % 8))); //修改该点同时保持其他位不变 break; default: break; } lcd12864_write_cmd(Y); //写行位地址 lcd12864_write_cmd(X); //写列字地址 lcd12864_write_dat(DH); //将高字节数据写回 lcd12864_write_dat(DL); //将低字节数据写回 lcd12864_write_cmd(0x30); //转回普通指令 } } /*画水平线*/ //(x0,y0):水平线的起点;(x1,y0):水平线的终点 //color=1:点亮；color=0:擦除 void lcd12864_drawRowLine(unsigned char y0,unsigned char x0,unsigned char x1,unsigned char color) { unsigned char temp; if(x0>x1) // 对x0、x1大小进行排列，以便画图 { temp = x1; x1 = x0; x0 = temp; } do { lcd12864_drawdot(x0, y0, color); // 逐点显示，描出垂直线 x0++; } while(x1>=x0); } /*画竖直线*/ //(x0,y0):竖直线的起点;(x1,y0)竖直线的终点; //color=1:点亮；color=0:擦除 void lcd12864_drawCollumLine(unsigned char x0,unsigned char y0,unsigned char y1,unsigned char color) { unsigned char temp; if(y0>y1) { temp=y0; y0=y1; y1=temp; } while (y0<=y1) { lcd12864_drawdot(x0,y0,color); y0++; } } /*画任意两点间的直线*/ //(x0,y0):竖直线的起点;(x1,y1):竖直线的终点 //color=1:点亮；color=0:擦除 void lcd12864_drawLine(unsigned char x0,unsigned char y0,unsigned char x1,unsigned char y1,unsigned char color) { int dx,dy; // 直线x,y轴差值变量 char dx_sym,dy_sym; // x,y轴增长方向，为-1时减值方向，为1时增值方向 int dx_2,dy_2; // dx*2,dy*2值变量，用于加快运算速度 int di; // 决策变量 dx = x1-x0; // 求取两点之间的差值 dy = y1-y0; if (dx<0) dx_sym=-1; else { if(dx>0) dx_sym=1; else { lcd12864_drawCollumLine(x0,y0,y1,color); return; } } if(dy>0) dy_sym=1; else { if(dy<0) dy_sym=-1; else { lcd12864_drawRowLine(x0,y0,x1,color); return; } } dx=dx_sym*dx; dy=dy_sym*dy; dx_2=dx*2; dy_2=dy*2; if(dx>=dy) { di=dy_2-dx; while(x0!=x1) { lcd12864_drawdot(x0,y0,color); x0+=dx_sym; if(di<0) di+=dy_2; else di+=dy_2-dx_2;y0+=dy_sym; } lcd12864_drawdot(x0,y0,color); } else { di=dx_2-dy; while(y0!=y1) { lcd12864_drawdot(x0,y0,color); y0+=dy_sym; if(di<0) di+=dx_2; else di+=dx_2-dy_2;x0+=dx_sym; } lcd12864_drawdot(x0,y0,color); } }