http://www.instructables.com/id/Dot-Matrix-Business-Card/
DotMatrix명함_LCD테스트보드(873)_PICPG2C_RotatingClock.pdf
F1MJV96FXP6OX75.zip▼압축파일 안의 C코드 (dotmatrixled.c)
//////////////////////////////////////////////////////////////////
/// Name: dotmatrixled.c
/// Author: B. Gian James
/// Description: A few lines of code to demonstrate writing to
/// the DLO7135 Smart Dot Matrix LED.
#include <avr/io.h>
#include <util/delay.h>
#include <stdio.h>
void Print2LED(uint8_t i);
int main(void)
{
DDRD = 0xFF; // Output
DDRB = (1<<DDB0);
char msg[] = "Welcome to my Instructable!";
uint8_t i;
for (;;)
{
for(i=0;i<27; i++)
{
Print2LED(msg[i]);
_delay_ms(150);
}
for(i=0x20; i<0x80; i++)
{
Print2LED(i);
_delay_ms(150);
}
}
}
void
Print2LED(uint8_t i)
{
PORTD = (i << 2);
if (i & 0b01000000)
PORTB = (1<<PINB0);
else
PORTB = (0<<PINB0);
}
