tesla80
Joined: 23 May 2007
Posts: 81
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| 16x1 (GDM1601) Text Lcd Driver for PIC |
 Posted: Wed May 23, 2007 3:35 pm |
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Hi All,
16x1 (GDM1601) Text Lcd Driver for PIC
16x1_lcd_gdm1601.c
| Code: | /*
GDM1601(16 Character, 1 Row Text LCD) Driver for PIC
Eray Ozturk 'SpeedyX' - 14.09.2006 00:33
Mail: erayozturk1(at)gmail.com
lcd_init : init (first and once)
lcd_command(x) : send a command
lcd_data(x) : send a character
printf(lcd_data,"SpeedyX"); : send a word
lcd_goto1 : cursor goto home
lcd_ramch : lcd line 2 (after 8th char)
lcd_clrscr : clear screen
PIC LCD
lcd_port.0 D4
lcd_port.1 D5
lcd_port.2 D6
lcd_port.3 D7
lcd_port.4 RS
lcd_port.5 E lcd RW pin -> ground
*/
#define lcd_port portb
#define t 2 // enable wait time (us)
#define lcd_putc(c) lcd_data(c)
#define lcd_goto1 lcd_command(0b10000000) // lcd goto home
#define lcd_ramch lcd_command(0b11000000) // lcd line 2
#define lcd_clrscr lcd_command(0b00000001);bekle_ms(2) // lcd clear
void bekle_ms(int x) {
delay_ms(x);
}
void bekle_us(int y) {
delay_us(y);
}
void lcd_gonder(char alt4, int1 tip) {
int ust4;
ust4 = alt4 & 0b11110000;
ust4 = ust4 >> 4;
ust4 &= 0x0F;
alt4 &= 0x0F;
if(tip==1) ust4 |= 0b00010000;
lcd_port=ust4;
bekle_us(t);
lcd_port |= 0b00100000; // enable=1
bekle_us(t);
lcd_port &= 0b11011111; // enable=0
bekle_us(t);
if(tip==1) alt4 |= 0b00010000;
lcd_port=alt4;
bekle_us(t);
lcd_port |= 0b00100000; // enable=1
bekle_us(t);
lcd_port &= 0b11011111; // enable=0
bekle_us(t);
}
void lcd_data(char c) { lcd_gonder(c,1); }
void lcd_command(char c) { lcd_gonder(c,0); }
void lcd_scroll_right(){lcd_command(0x1E);}
void lcd_scroll_left(){lcd_command(0x18);}
void lcd_gotox(int x) {
int adr=0x80;
if(x>8) adr=0xC0;
lcd_command(adr|(x-1));
}
void lcd_init() {
bekle_ms(20);
lcd_command(0b00000010);
lcd_command(0b00101000);
bekle_us(50);
lcd_command(0b00001100);
bekle_us(50);
lcd_clrscr;
lcd_command(0b00000110);
bekle_ms(10);
} |
main.c
| Code: | #include <16F88.h>
#FUSES INTRC_IO,NOWDT,NOMCLR,NOBROWNOUT,NOLVP,NOCPD,NOWRT,NODEBUG,NOPROTECT
#use delay(clock=4000000)
#use fast_io(A)
#use fast_io(B)
#byte porta = 5
#byte portb = 6
#include <16x1_lcd_gdm1601.c>
void main() {
setup_oscillator(OSC_4MHZ);
set_tris_a(0);
set_tris_b(0);
porta=0; portb=0;
lcd_init();
printf(lcd_data,"SpeedyX GDM1601");
//printf(lcd_data,"SpeedyX "); lcd_ramch; printf(lcd_data,"GDM1601"); // for lcd-s with 8-8 ram structures
for(;;); // loop forever
}
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