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