mca-pendel/sketches/input/input_orig.cc
2018-03-26 21:21:09 +02:00

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;
}