| |
Example to drive two 7 Segment LEDs
/**************************************
* *
* COPYRIGHT (c) Blitzlogic Sdn. Bhd. *
* Author : Abraham Wong 1/2/2000 *
* *
* 7 SEG LED using C - on ATMEL *
* AVR 90C2313 Target board *
* Compiler : IMAGECRAFT AVR C *
* *
**************************************/
#include < io2313.h > /* Include for 90C2313 header file */
#include < macros.h >
char num[ ] = {0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f};
/* array data for 7-Segment Code for 0,1,2,....,9 */
void wait( ){ ; }
void main(){
unsigned char cnt, right;
unsigned int i;
PORTB = 0; /* ZERO port P1 & port P3 */
PORTD = 0;
for( ;; )
{
for (right=0;right<3;right++){
PORTD = right;
for (cnt=0;cnt<10;cnt++)
{
PORTB = num[cnt];
for (i = 0; i < 10000; i++)
{
wait(); /* delay for half second */
}
}
}
}
}
|
tech_support@blitzlogic.com