LCD12864 全部子函数(包涵画图)下载_Word模板_24

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LCD12864 全部子函数(包涵画图)#include void delayu() { _nop_(); } //延时a * 1ms void delaym(uint a) { uint i, j; for(i = a; i > 0; i--) for(j = 110; j > 0; j--); } //检测LCD是否处于忙状态, 若忙返回1, 空闲返回0 bit checkBusy() { bit busy; RS = 0; RW = 1; E = 1; delayu(); busy = (bit)(LCD_DA TA&0...

#include void delayu() { _nop_(); } //延时a * 1ms void delaym(uint a) { uint i, j; for(i = a; i > 0; i--) for(j = 110; j > 0; j--); } //检测LCD是否处于忙状态, 若忙返回1, 空闲返回0 bit checkBusy() { bit busy; RS = 0; RW = 1; E = 1; delayu(); busy = (bit)(LCD_DA TA&0x80); E = 0; return busy ; } //等待LCD到空闲 void wait() { while(checkBusy()); } //写命令 void write_com(uchar cmd) { wait(); RS = 0; RW = 0; E = 0; LCD_DATA = cmd; delayu(); E = 1; E = 0; } //写数据 void write_data(uchar dat) { wait(); RS = 1; RW = 0; E = 0; LCD_DATA = dat; delayu(); E = 1; E = 0; } //读数据 uchar read_data(void) { uchar dsp_data; wait(); LCD_DATA=0xFF; RS = 1; RW = 1; E=0; E=1; delayu(); dsp_data=LCD_DA TA; E = 0; return(dsp_data); } //初始化LCD void init() { write_com(0x30); //基本指令, 扩充指令为34H write_com(0x0c); //显示开, 关光标 write_com(0x01); //清屏 delaym(10); } void setPosition(uchar x, uchar y) { uchar p; switch(y%4) { case 0: p = 0x80; break; //第一行开始地址 case 1: p = 0x90; break; //第二行 case 2: p = 0x88; break; //第三行 case 3: p = 0x98; break; //第四行 } p += x; write_com(p); } void writestring(uchar * str) { uchar i = 0; while(str[i] != '\0') { write_data(str[i++]); } } void lcd_DisplayImage(unsigned char *str) { unsigned char i; unsigned char j; unsigned char k; unsigned char bGDRAMAddrX = 0x80; //GDRAM水平地址 unsigned char bGDRAMAddrY = 0x80; //GDRAM垂直地址 for(i = 0; i < 2; i++) // 在绘图GDRAM中写满屏图片数据 { for(j = 0; j < 32; j++) { for(k = 0; k < 8; k++) { write_com(0x34); write_com(bGDRAMAddrY + j);//垂直地址 write_com(bGDRAMAddrX + k);//水平地址 write_com(0x30); write_data(*str++); write_data(*str++); } } bGDRAMAddrX = 0x88; } write_com(0x36); write_com(0x30); } //任意坐标写汉字 void write_sfm(uchar x,uchar y,uchar date) { uchar shi,ge; shi=date/10; ge=date%10; switch(y) { case 0: { write_com(0x80+x); write_data(0x30+shi); write_data(0x30+ge); }break; case 1: { write_com(0x90+x); write_data(0x30+shi); write_data(0x30+ge); }break; case 2: { write_com(0x88+x); write_data(0x30+shi); write_data(0x30+ge); }break; case 3: { write_com(0x98+x); write_data(0x30+shi); write_data(0x30+ge); }break; } } //*************点显示子程序************************ //*** 0<=x<=127表示横坐标,0<=y<=63表示纵坐标colour=0表示删除点colour=1表示现实点 void lcd_DisplayDot(uchar x,uchar y,uchar colour) { uchar i,j,l,h,h1,l1; uint k=0x01; unsigned char bGDRAMAddrX = 0x80; //GDRAM水平地址 unsigned char bGDRAMAddrY = 0x80; if(y>31) { y-=32; bGDRAMAddrX = 0x88; } i=x/16; j=15-(x%16); k=k<>8); write_com(0x34); write_com(bGDRAMAddrY + y);//垂直地址 write_com(bGDRAMAddrX + i);//水平地址 write_com(0x30); read_data(); h1=read_data(); l1=read_data(); write_com(0x34); write_com(bGDRAMAddrY + y);//垂直地址 write_com(bGDRAMAddrX + i);//水平地址 write_com(0x30); if(colour==0) { write_data((~h)&h1);write_data((~l)|l1); } else { write_data(h|h1);write_data(l|l1); } write_com(0x36); write_com(0x30); } //画横直线 void lcd_DisplayHLine(unsigned char x0, unsigned char x1, unsigned char y, unsigned char color) { unsigned char bak; if(x0>x1) // 对x0、x1大小进行排列,以便画图 { bak = x1; x1 = x0; x0 = bak; } do { lcd_DisplayDot(x0, y, color); // 从左到右逐点显示,描出垂直线 x0++; }while(x1>=x0); } //画纵直线 void lcd_DisplayRLine(unsigned char x, unsigned char y0, unsigned char y1, unsigned char color) { unsigned char bak; if(y0>y1) // 对y0、y1大小进行排列,以便画图 { bak = y1; y1 = y0; y0 = bak; } do { lcd_DisplayDot(x, y0, color); // 从上到下逐点显示,描出垂直线 y0++; }while(y1>=y0); } //画任意一直线 void lcd_DisplayLine(unsigned char x0,unsigned char y0,unsigned char x1,unsigned char y1,unsigned char color) { unsigned char bak; char dx; // 直线x轴差值变量 char dy; // 直线y轴差值变量 char dx_sym; // x轴增长方向,为-1时减值方向,为1时增值方向 char dy_sym; // y轴增长方向,为-1时减值方向,为1时增值方向 char dx_x2; // dx*2值变量,用于加快运算速度 char dy_x2; // dy*2值变量,用于加快运算速度 char di; // 决策变量 dx = x1-x0; // 求取两点之间的差值 dy = y1-y0; if(x0==x1) //判断是否为垂直线 { lcd_DisplayRLine(x0,y0,y1,color); //画垂直线 return; } if(y0==y1) //判断是否为水平线 { lcd_DisplayHLine(x0,x1,y0,color); //画水平线 return; } dx = x1-x0; // 求取两点之间的差值 dy = y1-y0; /* 判断增长方向,或是否为水平线、垂直线、点*/ if(dx>0) // 判断x轴方向 { dx_sym = 1; // dx>0,设置dx_sym=1 } else { if(dx<0) { dx_sym = -1; // dx<0,设置dx_sym=-1 } else { // dx==0,画垂直线,或一点 lcd_DisplayRLine(x0, y0, y1, color); return; } } if(dy>0) // 判断y轴方向 { dy_sym = 1; // dy>0,设置dy_sym=1 } else { if(dy<0) { dy_sym = -1; // dy<0,设置dy_sym=-1 } else { // dy==0,画水平线,或一点 lcd_DisplayHLine(x0, y0, x1, color); return; } } /* 将dx、dy取绝对值*/ dx = dx_sym * dx; dy = dy_sym * dy; /* 计算2倍的dx及dy值*/ dx_x2 = dx*2; dy_x2 = dy*2; /* 使用Bresenham法进行画直线*/ if(dx>=dy) // 对于dx>=dy,则使用x轴为基准{ di = dy_x2 - dx; while(x0!=x1) { lcd_DisplayDot(x0, y0, color); x0 += dx_sym; if(di<0) { di += dy_x2; // 计算出下一步的决策值 } else { di += dy_x2 - dx_x2; y0 += dy_sym; } } lcd_DisplayDot(x0, y0, color); // 显示最后一点 } else // 对于dxx1) // 若x0>x1,则x0与x1交换 { i = x0; x0 = x1; x1 = i; } if(y0>y1) // 若y0>y1,则y0与y1交换 { i = y0; y0 = y1; y1 = i; } //判断是否只是直线 if(y0==y1) { lcd_DisplayHLine(x0,x1,y0,color); return; } if(x0==x1) { lcd_DisplayRLine(x0,y0,y1,color); return; } while(y0<=y1) { lcd_DisplayHLine(x0,x1,y0,color); // 当前画水平线 y0++; // 下一行 } } //画圆函数 void lcd_DisplayCircle(unsigned char x0,unsigned char y0,unsigned char r,unsigned char color) { char a,b; char di; if(r>31 ||r==0) return; //参数过滤,次液晶显示的最大圆半径为31 a=0; b=r; di=3-2*r; //判断下个点位置的标志 while(a<=b) { lcd_DisplayDot(x0-b,y0-a,color); //3 lcd_DisplayDot(x0+b,y0-a,color); //0 lcd_DisplayDot(x0-a,y0+b,color); //1 lcd_DisplayDot(x0-b,y0-a,color); //7 lcd_DisplayDot(x0-a,y0-b,color); //2 lcd_DisplayDot(x0+b,y0+a,color); //4 lcd_DisplayDot(x0+a,y0-b,color); //5 lcd_DisplayDot(x0+a,y0+b,color); //6 lcd_DisplayDot(x0-b,y0+a,color); a++; /***使用Bresenham算法画圆**/ if(di<0) di +=4*a+6; else { di +=10+4*(a-b); b--; } lcd_DisplayDot(x0+a,y0+b,color); } }

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LCD12864 全部子函数(包涵画图)

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