Lcd text
2 row lcd
Hello fellows, i've finally decided to write little bit on this wiki page. So, what i'll be writing about ? For last few days i was playing with little lcd display and i finally managed to write some text with it ;)
Here is video how does it look like: http://www.youtube.com/watch?v=i1tZwHCo_g4
and here is source code:
- define F_CPU 1000000UL
- include <util/delay.h>
- include <avr/io.h>
void bf();
void in_d()
{
DDRD = 0x00;
}
void out_d() { DDRD = 0xff; }
void in_c() { DDRC = 0x00; }
void out_c() { DDRC = 0xff; }
write_i() { PORTC = 4; PORTC = 0; }
read_bf() { // PORTC = 4; PORTC = 6; }
write_d() { PORTC = 5; PORTC = 1; }
read_d() { // PORTC = 4; PORTC = 7; }
clear() { PORTD = 1; // clear display write_i(); bf();
PORTD = 0b00000110; // entry mode write_d(); bf();
_delay_ms(100); }
void init(void)
{
out_d();
out_c();
_delay_ms(15);
PORTD = 0b00110000; // function set ( DL, N, F )
write_i();
_delay_ms(4.1); PORTD = 0b00110000; // function set ( DL,N,F ) write_i();
_delay_us(100); PORTD = 0b00110000; // function set ( DL,N,F ) write_i();
_delay_ms(4.1); PORTD = 0b00111000; // set N and F write_i();
_delay_ms(4.1); PORTD = 0b00001000; // display off write_i();
_delay_ms(4.1); PORTD = 0b00001100; // display on write_i();
_delay_ms(4.1); PORTD = 0b00000110; // entry mode write_i();
}
void bf() { unsigned int bf; DDRB=0xff;
in_d();
read_bf(); bf = PORTD; bf &= 0b10000000;
while(bf) { read_bf(); bf = PORTD; bf &= 0b10000000; PORTB=0xff; _delay_ms(100); PORTB=0x0; _delay_ms(50); }
out_d();
}
void left() {
PORTD = 0x18; write_i(); bf(); }
int main()
{
unsigned int i;
init(); _delay_ms(11);
clear(); bf();
while(1) {
PORTD = 0x23; // # write_d(); bf(); _delay_ms(500);
PORTD = 101; // e write_d(); bf(); _delay_ms(500);
PORTD = 108; // l write_d(); bf(); _delay_ms(500);
PORTD = 101; // e write_d(); bf(); _delay_ms(500);
PORTD = 99; // c write_d(); bf(); _delay_ms(500);
PORTD = 116; // t write_d(); bf(); _delay_ms(500);
PORTD = 114; // r
write_d();
bf();
_delay_ms(500);
PORTD = 111; // o
write_d();
bf();
_delay_ms(500);
PORTD = 110; // n write_d(); bf(); _delay_ms(500);
PORTD = 105; // i write_d(); bf(); _delay_ms(500);
PORTD = 99; // c write_d(); bf(); _delay_ms(500);
PORTD = 115; // s write_d(); bf(); _delay_ms(500);
PORTD = 0x20; // " " write_d(); bf(); _delay_ms(500);
PORTD = 0x28; // ( write_d(); bf(); _delay_ms(500);
PORTD = 97; // a write_d(); bf(); _delay_ms(500);
PORTD = 116; // t write_d(); bf(); _delay_ms(500);
left(); PORTD = 0x29; // ) write_d(); bf(); _delay_ms(500);
left(); PORTD = 0x20; // " " write_d(); bf(); _delay_ms(500);
left(); PORTD = 0x49; // I write_d(); bf(); _delay_ms(500);
left(); PORTD = 82; // R write_d(); bf(); _delay_ms(500);
left(); PORTD = 67; // C write_d(); bf(); _delay_ms(500);
left(); PORTD = 78; // N write_d(); bf(); _delay_ms(500);
left(); PORTD = 101; // e write_d(); bf(); _delay_ms(500);
left(); PORTD = 116; // t write_d(); bf(); _delay_ms(500);
left(); PORTD = 0x20; // " " write_d(); bf(); _delay_ms(500);
left(); PORTD = 114; // r write_d(); bf(); _delay_ms(500);
left(); PORTD = 117; // u write_d(); bf(); _delay_ms(500);
left(); PORTD = 108; // l write_d(); bf(); _delay_ms(500);
left(); PORTD = 101; // e write_d(); bf(); _delay_ms(1000);
clear(); _delay_ms(500);
} return 0; }