LCD.zip_LMG160160_hd61830_library HD61830

#include <stdio.h> #include <dos.h> #include <stdlib.h> #define DATA 0x378 // data lines address for LPT 1 #define CONTROL 0x37A // control lines address for LPT 1 #define MAXX 240 // horizontal resolution of LCD #define MAXY 128 // vertical resolution of LCD #define MAXBYTE 3840 // number of bytes in the display (MAXX*MAXY/8) #define TEXTMAXX 40 // horizontal resolution, text mode #define TEXTMAXY 16 // vertical resolution, text mode #define TEXTBYTE 640 // number of bytes in a text screen #define TOTALBYTE 4192 // total RAM memory #define DELAY 2500 // delay for instructions : // 100 for Pentium 133 // 2500 for AMD 1800+ /* LPT pin - LCD pin 1 - 6 17 - 4 */ // LCD control lines definition #define EN_0 0x01 // xxx1, sets E to 0 at LPT line #define EN_1 0x00 // xxx0, sets E to 1 at LPT line #define RS_0 0x08 // x1xx, sets RS to 0 at LPT line #define RS_1 0x00 // x0xx, sets RS to 1 at at LPT line // LCD commands definition #define DISPLAY_LOW 0x08 #define DISPLAY_HIGH 0x09 #define CURSOR_LOW 0x0A #define CURSOR_HIGH 0x0B #define WRITEBYTE 0x0C #define CLEARBIT 0x0E #define SETBIT 0x0F static char _copyright[]="Contact : cdragos69@yahoo.com"; static unsigned char font[2048]; static unsigned int current_x,current_y; /* Return : 0 - ok. Font loaded 1 - file not found 2 - invalid file */ unsigned int LCD_loadfont(char *name) { FILE *f; f=fopen(name,"rb"); if(!f) return 1; if(fread(font,1,2048,f)!=2048) // read font information from file return 2; return 0; } void microdelay(unsigned int d) { for(;d;d--) asm{nop;}; } void LCD_command(unsigned char cmd, unsigned char data) { outportb(DATA, cmd ); // Output the actual command outportb(CONTROL, (RS_1 | EN_0)); // set RS on 1 for instruction, E is kept low outportb(CONTROL, (RS_1 | EN_1)); // pulse on E outportb(CONTROL, (RS_1 | EN_0)); outportb(DATA, data); // Output the actual data outportb(CONTROL, (RS_0 | EN_0)); // set RS on 0 for data, E is kept low outportb(CONTROL, (RS_0 | EN_1)); // pulse on E outportb(CONTROL, (RS_0 | EN_0)); microdelay(DELAY); // time for controller to finish the command } void LCD_init_graph() { LCD_command(0x00, 0x32); // Display ON, master mode, graphic mode LCD_command(0x01, 0x77); // 8 bits / character LCD_command(0x02, 0x1D); // 30 horizontal bytes - 240 pixels LCD_command(0x03, 0x7F); // 1/128 duty cycle (128 lines) LCD_command(0x04, 0x00); // Cursor at bottom line LCD_command(DISPLAY_LOW, 0x00); // Display start address low LCD_command(DISPLAY_HIGH, 0x00); // Display start address high LCD_command(CURSOR_LOW, 0x00); // Cursor address low LCD_command(CURSOR_HIGH, 0x00); // Cursor address high current_x=0; // initial current position current_y=0; } void LCD_clear_memory(void) { register unsigned int i; LCD_command(CURSOR_LOW,0); // set page start address LCD_command(CURSOR_HIGH,0); for(i=0;i<TOTALBYTE;i++) LCD_command(WRITEBYTE,0); // reset all memory } void LCD_clear_graph(void) { register unsigned int i; LCD_command(CURSOR_LOW,0); // set page start address LCD_command(CURSOR_HIGH,0); for(i=0;i<MAXBYTE;i++) LCD_command(WRITEBYTE,0); // reset all graphic memory } void LCD_putpixel(unsigned int x,unsigned int y, unsigned char set) { unsigned int byte; unsigned char pos; if(x<MAXX && y<MAXY) { byte=(y*30)+(x>>3); // byte address for the pixel pos=x&0x07; // pixel bit position inside byte LCD_command(CURSOR_LOW,byte & 0xFF); // high part of byte address LCD_command(CURSOR_HIGH,byte >> 8); // low part of byte address if(set) LCD_command(SETBIT,pos); // set corresponding bit in the byte value else LCD_command(CLEARBIT,pos); // reset corresponding bit in the byte value } } void LCD_line(unsigned int xi,unsigned int yi,unsigned int xf,unsigned int yf,unsigned char set) { int dx,dy,s,n,x,y; unsigned char d=0; if(yf > yi) { unsigned t; t=xf; xf=xi; xi=t; t=yf; yf=yi; yi=t; } if(xf < xi) { d=1; } dy=yi-yf; if(d) dx=xi-xf; else dx=xf-xi; x=xi; y=yi; if(dx>dy) { n=dx+1; s=-dx; dx=2*dx; dy=2*dy; while(n!=0) { LCD_putpixel(x,y,set); if(d) x--; else x++; s+=dy; if(s>=0) { y--; s-=dx; } n--; } } else { n=dy+1; s=-dy; dx=2*dx; dy=2*dy; while(n!=0) { LCD_putpixel(x,y,set); y--; s+=dx; if(s>=0) { if(d) x--; else x++; s-=dy; } n--; } } } void LCD_rectangle(unsigned int lx,unsigned int ly,unsigned int rx,unsigned int ry,unsigned char set) { register unsigned int i; if(lx > rx) { unsigned t=rx; rx=lx; lx=t; } if(ly > ry) { unsigned t=ry; ry=ly; ly=t; } for(i=lx;i<=rx;i++) { LCD_putpixel(i,ly,set); LCD_putpixel(i,ry,set); } for(i=ly+1;i<ry;i++) { LCD_putpixel(lx,i,set); LCD_putpixel(rx,i,set); } } void LCD_circle(unsigned int x,unsigned int y,unsigned int r,unsigned char set) { int u,v,s; int x1,y1,x2,y2; if(r==0) { LCD_putpixel(x,y,set); return; } x1=x + r;y1=y; x2=x - r;y2=y; u=2*r;v=0;s=1-r; LCD_putpixel(x1,y1,set); LCD_putpixel(x2,y2,set); round_2: ; y1++;y2--;v+=2; if(u==v) goto round_9; round_3: ; LCD_putpixel(x1,y1,set); LCD_putpixel(x2,y2,set); s+=v+1; if(s<0) goto round_2; x1--;y1++;x2++;y2--; u-=2;v+=2;s-=u; if(u>v) goto round_3; if(u!=v) s++; goto round_8; round_6: ; x1--;y1++;x2++;y2--; u-=2;v+=2;s+=v; round_7: ; s-=u; round_8: ; LCD_putpixel(x1,y1,set); LCD_putpixel(x2,y2,set); round_9: ; s++; if(s<0) goto round_6; x1--;x2++;u-=2; if(u!=0) goto round_7; LCD_putpixel(x1,y1,set); LCD_putpixel(x2,y2,set); s=1-s; round_12: ; x1--;x2++;u+=2; if(u==v) goto round_19; round_13: ; LCD_putpixel(x1,y1,set); LCD_putpixel(x2,y2,set); s+=u+1; if(s<0) goto round_12; x1--;y1--;x2++;y2++; u+=2;v-=2;s-=v; if(u<v) goto round_13; if(u!=v) s++; goto round_18; round_16: ; x1--;y1--;x2++;y2++; u+=2;v-=2;s+=u; round_17: ; s-=v; round_18: ; LCD_putpixel(x1,y1,set); LCD_putpixel(x2,y2,set); round_19: ; s++; if(s<0) goto round_16; y1--;y2++;v-=2; if(v!=0) goto round_17; } void LCD_bar(unsigned int lx,unsigned int ly,unsigned int rx,unsigned int ry, unsigned char set) { register unsigned int i,k; if(lx > rx) { unsigned int t=rx; rx=lx; lx=t; } if(ly > ry) { unsigned int t=ry; ry=ly; ly=t; } for(