Initial commit with basic C code to write to pins.

This commit is contained in:
Marvin Blum
2017-03-09 23:30:15 +01:00
commit c358ee6a05
4 changed files with 84 additions and 0 deletions

53
pins.c Normal file
View File

@@ -0,0 +1,53 @@
#include "pins.h"
#include <avr/io.h>
const unsigned char LOW = 0x00;
const unsigned char HIGH = 0x01;
void digitalWrite(unsigned char pin, unsigned char value){
if(pin > 13){
return;
}
// TODO turn off pwm
if(pin < 8){
// pin 0-7
DDRD |= _BV(DDD0+pin);
if(value == HIGH){
PORTD |= _BV(DDD0+pin);
}
else{
PORTD &= ~_BV(DDD0+pin);
}
}
else{
// pin 8-13
DDRB |= _BV(DDB0+pin);
if(value == HIGH){
PORTB |= _BV(DDB0+pin);
}
else{
PORTB &= ~_BV(DDB0+pin);
}
}
}
void analogWrite(unsigned char pin, unsigned char value){
if(pin > 7){
return;
}
// TODO turn off pwm
DDRC |= _BV(DDC0+pin);
if(value == HIGH){
PORTC |= _BV(DDC0+pin);
}
else{
PORTC &= ~_BV(DDC0+pin);
}
}