/* Copyright 2021 QMK * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ #pragma once #include <avr/io.h> #include "pin_defs.h" typedef uint8_t pin_t; /* Operation of GPIO by pin. */ #define setPinInput(pin) (DDRx_ADDRESS(pin) &= ~_BV((pin)&0xF), PORTx_ADDRESS(pin) &= ~_BV((pin)&0xF)) #define setPinInputHigh(pin) (DDRx_ADDRESS(pin) &= ~_BV((pin)&0xF), PORTx_ADDRESS(pin) |= _BV((pin)&0xF)) #define setPinInputLow(pin) _Static_assert(0, "AVR processors cannot implement an input as pull low") #define setPinOutputPushPull(pin) (DDRx_ADDRESS(pin) |= _BV((pin)&0xF)) #define setPinOutputOpenDrain(pin) _Static_assert(0, "AVR platform does not implement an open-drain output") #define setPinOutput(pin) setPinOutputPushPull(pin) #define writePinHigh(pin) (PORTx_ADDRESS(pin) |= _BV((pin)&0xF)) #define writePinLow(pin) (PORTx_ADDRESS(pin) &= ~_BV((pin)&0xF)) #define writePin(pin, level) ((level) ? writePinHigh(pin) : writePinLow(pin)) #define readPin(pin) ((bool)(PINx_ADDRESS(pin) & _BV((pin)&0xF))) #define togglePin(pin) (PORTx_ADDRESS(pin) ^= _BV((pin)&0xF))