51 lines
1.0 KiB
C
51 lines
1.0 KiB
C
#include <stdint.h>
|
|
#include <stddef.h>
|
|
#include <avr/io.h>
|
|
#define F_CPU 20000000UL
|
|
#include <util/delay.h>
|
|
#include <stdbool.h>
|
|
//~ #define BAUD 9600
|
|
//~ #include <util/setbaud.h>
|
|
#include <avr/interrupt.h>
|
|
|
|
uint8_t volatile status = 0;
|
|
|
|
ISR(INT1_vect){
|
|
status = 1;
|
|
//~ PCORT0 = 1;
|
|
}
|
|
|
|
int main(){
|
|
|
|
//~ PORTD |= (1 << PORTD2); // turn On the Pull-up
|
|
// PD2 is now an input with pull-up enabled
|
|
|
|
|
|
EICRA |= 0x0F; // External Interrupt Control Register
|
|
// INT0 on rising edge
|
|
EIMSK |= 0x03; // External Interrupt Mask Register
|
|
// Enable INT0 for interrupt
|
|
|
|
SREG |= 0x80; // Status Register
|
|
// Enable global interrupts
|
|
|
|
//~ PCICR |= 0x04; // Pin Change Interrupt Control Register
|
|
//~ // Enabled PCINT[23;16] -> Pin 13,12,11,6,5,4,3,2
|
|
//~ PCIFR |= 0x04; // Pin Change Interrupt Flag Register
|
|
|
|
//~ PCMSK2 = 0xff; // Pin Change Mask Register 2
|
|
//~ // Enabled PCINT[23;16] (Single Pins)
|
|
DDRC = 0xff;
|
|
|
|
|
|
|
|
while(1){
|
|
if(status){
|
|
PORTC ^= 0x01;
|
|
status = 0;
|
|
}
|
|
PORTC ^= 0x02;
|
|
}
|
|
return 0;
|
|
}
|