// GLCD - glcd.h
#include <util/delay.h>
#include <stdlib.h>
#include <math.h>
#include <string.h>
#include "font.h"
typedef unsigned char byte;
//DEBUG
//#define DEBUG_READ 0
//#define DEBUG_GLCD 0
//----------------------
#define E_DELAY 3
#define DATAPORT PORTA
#define DATADDR DDRA
#define DATAPIN PINA
//#define CONTROLPORT PORTB
#define CS1 PORTC.2
#define CS2 PORTC.3
#define RS PORTC.4
#define RW PORTC.0
#define EN PORTC.1
//#define CS_ACTIVE_LOW 0 //Define this if your GLCD CS
//is active low (refer to datasheet)
#pragma used+
//--------Arabic----------
static int prevLet = 193;
static byte stat = 0;
static byte prevX = 0;
static byte prevY = 0;
//------------------------
void trigger()
{
EN = 1; //EN high
delay_us(E_DELAY);
EN = 0; //EN low
delay_us(E_DELAY);
}
//----------------------
void glcd_on()
{
//Activate both chips
#ifdef CS_ACTIVE_LOW
CS1 = 0;
CS2 = 0;
#else
CS1 = 1;
CS2 = 1;
#endif
RS = 0; //RS low --> command
RW = 0; //RW low --> write
DATAPORT = 0x3F; //ON command
trigger();
}
//----------------------
void glcd_off()
{
//Activate both chips
#ifdef CS_ACTIVE_LOW
CS1 = 0;
CS2 = 0;
#else
CS1 = 1;
CS2 = 1;
#endif
RS = 0; //RS low --> command
RW = 0; //RW low --> write
DATAPORT = 0x3E; //OFF command
trigger();
}
//----------------------
void set_start_line(byte line)
{
RS = 0; //RS low --> command
RW = 0; //RW low --> write
//Activate both chips
#ifdef CS_ACTIVE_LOW
CS1 = 0;
CS2 = 0;
#else
CS1 = 1;
CS2 = 1;
#endif
DATAPORT = 0xC0 | line; //Set Start Line command
trigger();
}
//----------------------
void goto_col(unsigned int x)
{
byte pattern;
RS = 0; //RS low --> command
RW = 0; //RW low --> write
if(x<64) //left section
{
#ifdef CS_ACTIVE_LOW
CS1 = 0; //select chip 1
CS2 = 1; //deselect chip 2
#else
CS1 = 1; //select chip 1
CS2 = 0; //deselect chip 2
#endif
pattern = x; //put column address on data port
}
else //right section
{
#ifdef CS_ACTIVE_LOW
CS2 = 0;
CS1 = 1;
#else
CS2 = 1; //select chip 2
CS1 = 0; //deselct chip 1
#endif
pattern = x-64; //put column address on data port
}
pattern = (pattern | 0x40 ) & 0x7F; //Command format
DATAPORT = pattern;
trigger();
}
//----------------------
void goto_row(unsigned int y)
{
byte pattern;
RS = 0; //RS low --> command
RW = 0; //RW low --> write
pattern = (y | 0xB8 ) & 0xBF; //put row address on data port set command
DATAPORT = pattern;
trigger();
}
//----------------------
void goto_xy(unsigned int x,unsigned int y)
{
goto_col(x);
goto_row(y);
}
//----------------------
void glcd_write(byte b)
{
RS = 1; //RS high --> data
RW = 0; //RW low --> write
DATAPORT = b; //put data on data port
delay_us(1);
trigger();
}
//------------------------
void glcd_clrln(byte ln)
{
int i;
goto_xy(0,ln); //At start of line of left side
goto_xy(64,ln); //At start of line of right side (Problem)
#ifdef CS_ACTIVE_LOW
CS1 = 0;
#else
CS1 = 1;
#endif
for(i=0;i<65;i++)
glcd_write(0);
}
//-------------------------
void glcd_clear()
{
int i;
for(i=0;i<8;i++)
glcd_clrln(i);
}
//-----------------------
byte is_busy()
{
byte status = 0; //Read data here
EN = 0; //Low Enable
delay_us(1); //tf
RW = 1; //Read
RS = 0; //Status
delay_us(1); //tasu
EN = 1; //High Enable
delay_us(5); //tr + max(td,twh)->twh
//Dummy read
EN = 0; //Low Enable
delay_us(5); //tf + twl + chineese error
EN = 1; //High Enable
delay_us(1); //tr + td
status = DATAPIN; //Input data
EN = 0; //Low Enable
delay_us(1); //tdhr
#ifdef DEBUG_READ
printf("S:%x\n\r",status);
#endif
return (status & 0x80);
}
//-----------------------
byte glcd_read(byte column)
{
byte read_data = 0; //Read data here
DATADDR = 0x00; //Input
//while(is_busy());
RW = 1; //Read
RS = 1; //Data
#ifdef CS_ACTIVE_LOW
CS1 = (column>63);
#else
CS1 = (column<64); //Enable/Disable CS1
#endif
CS2 = !CS1; //Disable/Enable CS2
delay_us(1); //tasu
EN = 1; //Latch RAM data into ouput register
delay_us(1); //twl + tf
//Dummy read
//while(is_busy());
EN = 0; //Low Enable
delay_us(20); //tf + twl + chineese error
EN = 1; //latch data from output register to data bus
delay_us(1); //tr + td(twh)
read_data = DATAPIN; //Input data
EN = 0; //Low Enable to remove data from the bus
delay_us(1); //tdhr
#ifdef DEBUG_READ
printf("R:%x\n\r",read_data);
#endif
DATADDR = 0xFF; //Output again
return read_data;
}
//-----------------------
/*byte get_point(unsigned int x,unsigned int y)
{
byte data;
goto_xy(x,((int)(y/8)));
data = glcd_read();
return data;
} */
//----------------------
void point_at(unsigned int x,unsigned int y,byte color)
{
byte pattern;
goto_xy(x,(int)(y/8));
switch (color)
{
case 0: //Light spot
pattern = ~(1<<(y%8)) & glcd_read(x);
break;
case 1: //Dark spot
pattern = (1<<(y%8)) | glcd_read(x);
#ifdef DEBUG_GLCD
_delay_ms(30);/////////////////////////////////////////
#endif
break;
}
goto_xy(x,(int)(y/8));
glcd_write(pattern);
}
//-----------------------
void h_line(unsigned int x,unsigned int y,byte l,byte s,byte c)
{
int i;
for(i=x; i<(l+x); i += (byte)(s+1))
point_at(i,y,c);
}
//-----------------------
void v_line(unsigned int x,unsigned int y,signed int l,byte s,byte c)
{
unsigned int i;
for(i=y; i<(y+l); i += (byte)(s+1))
point_at(x,i,c);
}
//-----------------------
void line(unsigned int x1,unsigned int y1,
unsigned int x2,unsigned int y2,
byte s,byte c)
{
byte i;
byte y01;
byte temp;
float a;
float b;
byte y00;
byte y010;
if(x1==x2)
{
v_line(x1,min(y1,y2),abs(y2-y1)+1,s,c);
}
else if(y1==y2)
{
h_line(min(x1,x2),y1,abs(x2-x1)+1,s,c);
}
else
{
if(x1>x2)
{
temp = x1;
x1 = x2;
x2 = temp;
temp = y1;
y1 = y2;
y2 = temp;
}
a = (float)(signed)(y2-y1)/(x2-x1);
b = y1 - a*x1;
y00 = a*x1 + b;
y010 = y00;
for(i=(x1+1); i<=x2; i ++)
{
y01 = a*i + b + 0.5; //+ 0.5 to approximate to the nearest integer
if( (signed char)(y01 - y010) > 1 )
{
//-------Subject to error
v_line((i-1),(byte)(y010+1),(y01-y010-1),s,c);
}
else if( (signed char)(y010 - y01) > 1 )
{
//-------Subject to error
v_line((i-1),(byte)(y01+1),(y010-y01-1),s,c);
}
if((i==x2) && (y00 == y01)) h_line(x1,y01,(x2-x1),0,c);
y010 = y01;
if( y00 == y01) continue;
h_line(x1,y00,(i-x1),0,c);
x1 = i;
y00 = y01;
}
point_at(x2,y2,c);
}
}
//-----------------------
void rectangle(unsigned int x1,unsigned int y1,
unsigned int x2,unsigned int y2,
byte s,byte c)
{
h_line(x1,y1,(x2-x1),s,c);
h_line(x1,y2,(x2-x1),s,c);
v_line(x1,y1,(y2-y1),s,c);
v_line(x2,y1,(y2-y1+1),s,c);
}
//-----------------------
void cuboid(unsigned int x11,unsigned int y11,
unsigned int x12,unsigned int y12,
unsigned int x21,unsigned int y21,
unsigned int x22,unsigned int y22,
byte s,byte c)
{
rectangle(x11,y11,x12,y12,s,c);
rectangle(x21,y21,x22,y22,s,c);
line(x11,y11,x21,y21,s,c);
line(x12,y11,x22,y21,s,c);
line(x11,y12,x21,y22,s,c);
line(x12,y12,x22,y22,s,c);
}
//-----------------------
void h_parallelogram(unsigned int x1,unsigned int y1,
unsigned int x2,unsigned int y2,
byte l,byte s,byte c)
{
h_line(x1,y1,l,s,c);
h_line((x2-l+1),y2,l,s,c);
line(x1,y1,(x2-l+1),y2,s,c);
line((x1+l-1),y1,x2,y2,s,c);
}
//-----------------------
void v_parallelogram(unsigned int x1,unsigned int y1,
unsigned int x2,unsigned int y2,
byte l,byte s,byte c)
{
v_line(x1,y1,l,s,c);
v_line(x2,(y2-l+1),l,s,c);
line(x1,y1,x2,(y2-l+1),s,c);
line(x1,(y1+l-1),x2,y2,s,c);
}
//-----------------------
void h_parallelepiped(unsigned int x11,unsigned int y11,
unsigned int x12,unsigned int y12,byte l1,
unsigned int x21,unsigned int y21,
unsigned int x22,unsigned int y22,byte l2,
byte s,byte c)
{
h_parallelogram(x11,y11,x12,y12,l1,s,c);
h_parallelogram(x21,y21,x22,y22,l2,s,c);
line(x11,y11,x21,y21,s,c);
line(x12,y12,x22,y22,s,c);
line((x11+l1-1),y11,(x21+l2-1),y21,s,c);
line((x12-l1+1),y12,(x22-l2+1),y22,s,c);
}
//-----------------------
void v_parallelepiped(unsigned int x11,unsigned int y11,
unsigned int x12,unsigned int y12,byte l1,
unsigned int x21,unsigned int y21,
unsigned int x22,unsigned int y22,byte l2,
byte s,byte c)
{
v_parallelogram(x11,y11,x12,y12,l1,s,c);
v_parallelogram(x21,y21,x22,y22,l2,s,c);
line(x11,y11,x21,y21,s,c);
line(x12,y12,x22,y22,s,c);
line(x11,(y11+l1-1),x21,(y21+l2-1),s,c);
line(x12,(y12-l1+1),x22,(y22-l2+1),s,c);
}
//-----------------------
void circle(unsigned int x0,unsigned int y0,
unsigned int r,byte s,byte c)
{
byte i,y,y00;
y00 = r; //Point (0,r) is the 1st point
for(i=0; i<r; i++)
{
y = isqrt((int)r*r - (int)i*i);
point_at((x0+i),(y0+y),c);
point_at((x0+i),(y0-y),c);
point_at((x0-i),(y0+y),c);
point_at((x0-i),(y0-y),c);
if(abs(y00-y)>1)
{
v_line(x0+(i-1),y0+min(y00,y)+1,abs(y00-y),s,c);
v_line(x0+(i-1),y0-max(y00,y),abs(y00-y),s,c);
v_line(x0-(i-1),y0+min(y00,y)+1,abs(y00-y),s,c);
v_line(x0-(i-1),y0-max(y00,y),abs(y00-y),s,c);
}
y00 = y;
}
v_line(x0+(i-1) ,y0,y ,s,c);
v_line(x0+(i-1) ,y0-y ,y,s,c);
v_line(x0-(i-1) ,y0,y ,s,c);
v_line(x0-(i-1) ,y0-y ,y,s,c);
}
//-----------------------
//void ellipse(unsigned int x0,unsigned int y0,
// unsigned int a,unsigned int b,
// byte s,byte c)
//{
// byte i,y,y00;
// y00 = 1;
// for(i=0; i < a; i++)
// {
// y = isqrt((int)a*a - (int)i*i);
// point_at((x0+i)*(a+x0)/a,(y0+y)*(b+y0)/b,c);
// point_at((x0+i)*(a+x0)/a,(y0-y)*(b+y0)/b,c);
// point_at((x0-i)*(a+x0)/a,(y0+y)*(b+y0)/b,c);
// point_at((x0-i)*(a+x0)/a,(y0-y)*(b+y0)/b,c);
// /*if(abs(y00-y)>1)
// {
// v_line(x0+(i-1),y0+min(y00,y)+1,abs(y00-y),s,c);
// v_line(x0+(i-1),y0-max(y00,y),abs(y00-y),s,c);
// v_line(x0-(i-1),y0+min(y00,y)+1,abs(y00-y),s,c);
// v_line(x0-(i-1),y0-max(y00,y),abs(y00-y),s,c);
//
// printf("y=%u y00=%u\n\r",y,y00);
// }*/
// y00 = y;
// }
// /*v_line(x0+(i-1) ,y0,y ,s,c);
// v_line(x0+(i-1) ,y0-y ,y,s,c);
// v_line(x0-(i-1) ,y0,y ,s,c);
// v_line(x0-(i-1) ,y0-y ,y,s,c);*/
//}
//------------Arabic/English Writing-------
void putIt(int c,int x,int y)
{
byte i;
goto_col(x);
goto_row(y);
for(i=0;i<8;i++)
{
glcd_write(font[(8*c)+i]);
}
}
//--------------------------
void enlarge(char *large,unsigned char c,byte size)
{
byte i,j,temp;
byte k = 0;
for(i=0;i<size;i++)
{
for(j=0;j<8;j++)
{
large[i] >>= 1;
temp = c & 0x01;
if(temp)
large[i] |= 0x80;
if(++k == size)
{
c >>= 1;
k = 0;
}
}
}
}
//--------------------------
void putItSz(int c,int x,int y,byte sz)
{
byte i,j,k;
//char large[8][sz];
char large[8][8];
goto_col(x);
goto_row(y);
for(i=0;i<8;i++)
{
enlarge(large[i],font[(8*c)+i],sz); //c here;GCC (c-1)
}
for(j=0;j<sz;j++)
{
for(i=0;i<8;i++)
{
for(k=0;k<sz;k++)
{
if(x+k+(sz*i) == 64) goto_xy(64,y); //Problem 1: Forgot to change 3 to sz
glcd_write(large[i][j]);
}
}
goto_xy(x,++y);
}
}
//--------------------------
void glcd_putchar(byte c,int x,int y,byte l,byte sz)
{
if(l == 1)
{
switch(c)
{
case 129:
c = 250;
break;
case 144:
c = 251;
break;
case 152:
c = 252;
break;
case 142:
c = 253;
break;
case 141:
c = 254;
break;
}
if((c >= 193) && (prevLet >= 193) && (map[prevLet-193][5]) && (map[c-193][4]))
{
putIt(map[prevLet-193][stat+1],prevX,prevY);
stat = 2;
}else stat = 0;
if(c >= 193) putItSz(map[c-193][stat],x,y,sz);
else putItSz(c,x,y,sz);
prevLet = c;
prevX = x;
prevY = y;
}else putItSz(c,x,y,sz);
}
//---------------------------
void glcd_puts(byte *c,int x,int y,unsigned char l,byte sz,signed char space)
{
char i = 0;
char special = 0;
while((i<strlen(c)) && l==0)
{
glcd_putchar(*(c+i),x,y,0,sz);
x += (8+space)*sz;
if(x>128-8*sz)
{
x=0;
y += sz;
}
i++;
}
while((i<strlen(c)) && l==1)
{
if((*(c+i) == 225) && (*(c+i+1) == 199))
special = 249;
else if((*(c+i) == 225) && (*(c+i+1) == 195))
special = 231;
else if((*(c+i) == 225) && (*(c+i+1) == 194))
special = 232;
else if((*(c+i) == 225) && (*(c+i+1) == 197))
special = 233;
if(special)
{
glcd_putchar(special,x-8*sz,y,1,sz);
i+=2;
x -= 8*sz;
special = 0;
}
else
{
glcd_putchar(*(c+i),x-8*sz,y,l,sz);
if(*(c+i) == 32) //If space (i.e. new word)
{
x -= (8+space)*sz; //Space between words
}
else
{
x -= 8*sz;
}
i++;
}
if(x < 8*sz+1)
{
x=128-8*sz;
y += sz;
}
}
prevLet = 193;
}
//------------BMP Display--------------------
void bmp_disp(byte *bmp,unsigned int x1,unsigned int y1,
unsigned int x2,unsigned int y2)
{
unsigned int i,j;
for(i=y1;i<=y2;i++)
{
for(j=x1;j<=x2;j++)
{
goto_xy(j,i);
glcd_write(bmp[(128*i)+j]);
}
}
}
#pragma used-