Commit 34d55c30 authored by Birte Kristina Friesel's avatar Birte Kristina Friesel
Browse files

AVR GPIO: Add pullup support

parent 444e0329

include/arch/arduino-nano/driver/gpio.h

+46 −0
Original line number Diff line number Diff line
@@ -58,6 +58,19 @@ class GPIO { 
				DDRD &= ~_BV(pin - 24);

			}

		}

		inline void input(unsigned char const pin, unsigned char const pull) {

			if (pin < 8) {

			} else if (pin < 16) {

				DDRB &= ~_BV(pin - 8);

				PORTB |= _BV(pin - 8);

			} else if (pin < 24) {

				DDRC &= ~_BV(pin - 16);

				PORTC |= _BV(pin - 16);

			} else if (pin < 32) {

				DDRD &= ~_BV(pin - 24);

				PORTD |= _BV(pin - 24);

			}

		}

		inline void output(unsigned char const pin) {

			if (pin < 8) {

			} else if (pin < 16) {
@@ -68,6 +81,19 @@ class GPIO { 
				DDRD |= _BV(pin - 24);

			}

		}

		inline void output(unsigned char const pin, unsigned char const value) {

			if (pin < 8) {

			} else if (pin < 16) {

				PORTB = value ? (PORTB | _BV(pin - 8)) : (PORTB & ~_BV(pin - 8));

				DDRB |= _BV(pin - 8);

			} else if (pin < 24) {

				PORTC = value ? (PORTC | _BV(pin - 16)) : (PORTC & ~_BV(pin - 16));

				DDRC |= _BV(pin - 16);

			} else if (pin < 32) {

				PORTD = value ? (PORTD | _BV(pin - 24)) : (PORTD & ~_BV(pin - 24));

				DDRD |= _BV(pin - 24);

			}

		}

		inline unsigned char read(unsigned char const pin) {

			if (pin < 8) {

			}
@@ -104,6 +130,26 @@ class GPIO { 
				}

			}

		}

		inline void enable_int(unsigned char const pin) {

			if (pin < 8) {

			} else if (pin < 16) {

				PCMSK0 |= _BV(pin - 8);

			} else if (pin < 24) {

				PCMSK1 |= _BV(pin - 16);

			} else if (pin < 32) {

				PCMSK2 |= _BV(pin - 24);

			}

		}

		inline void disable_int(unsigned char const pin) {

			if (pin < 8) {

			} else if (pin < 16) {

				PCMSK0 &= ~_BV(pin - 8);

			} else if (pin < 24) {

				PCMSK1 &= ~_BV(pin - 16);

			} else if (pin < 32) {

				PCMSK2 &= ~_BV(pin - 24);

			}

		}

};



extern GPIO gpio;

src/arch/arduino-nano/driver/gpio.cc

+13 −0
Original line number Diff line number Diff line 
#include "driver/gpio.h"

#include <avr/io.h>

#include <avr/interrupt.h>



GPIO gpio;



ISR(PCINT0_vect)

{

}



ISR(PCINT1_vect)

{

}



ISR(PCINT2_vect)

{

}