From 2728603fe6d73e805a539d337fd01051c46ca806 Mon Sep 17 00:00:00 2001 From: Joel Challis Date: Fri, 19 Nov 2021 18:41:02 +0000 Subject: Move tmk_core/common/ (#13918) --- platforms/avr/gpio.h | 49 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 49 insertions(+) create mode 100644 platforms/avr/gpio.h (limited to 'platforms/avr/gpio.h') diff --git a/platforms/avr/gpio.h b/platforms/avr/gpio.h new file mode 100644 index 0000000000..e9be68491d --- /dev/null +++ b/platforms/avr/gpio.h @@ -0,0 +1,49 @@ +/* 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 . + */ +#pragma once + +#include +#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 setPinOutput(pin) (DDRx_ADDRESS(pin) |= _BV((pin)&0xF)) + +#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)) + +/* Operation of GPIO by port. */ + +typedef uint8_t port_data_t; + +#define readPort(port) PINx_ADDRESS(port) + +#define setPortBitInput(port, bit) (DDRx_ADDRESS(port) &= ~_BV((bit)&0xF), PORTx_ADDRESS(port) &= ~_BV((bit)&0xF)) +#define setPortBitInputHigh(port, bit) (DDRx_ADDRESS(port) &= ~_BV((bit)&0xF), PORTx_ADDRESS(port) |= _BV((bit)&0xF)) +#define setPortBitOutput(port, bit) (DDRx_ADDRESS(port) |= _BV((bit)&0xF)) + +#define writePortBitLow(port, bit) (PORTx_ADDRESS(port) &= ~_BV((bit)&0xF)) +#define writePortBitHigh(port, bit) (PORTx_ADDRESS(port) |= _BV((bit)&0xF)) -- cgit v1.2.3