gpio.h (1796B)
- /* 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 "compiler_support.h"
- #include "pin_defs.h"
- typedef uint8_t pin_t;
- /* Operation of GPIO by pin. */
- #define gpio_set_pin_input(pin) (DDRx_ADDRESS(pin) &= ~_BV((pin)&0xF), PORTx_ADDRESS(pin) &= ~_BV((pin)&0xF))
- #define gpio_set_pin_input_high(pin) (DDRx_ADDRESS(pin) &= ~_BV((pin)&0xF), PORTx_ADDRESS(pin) |= _BV((pin)&0xF))
- #define gpio_set_pin_input_low(pin) STATIC_ASSERT(0, "GPIO pulldowns in input mode are not available on AVR")
- #define gpio_set_pin_output_push_pull(pin) (DDRx_ADDRESS(pin) |= _BV((pin)&0xF))
- #define gpio_set_pin_output_open_drain(pin) STATIC_ASSERT(0, "Open-drain outputs are not available on AVR")
- #define gpio_set_pin_output(pin) gpio_set_pin_output_push_pull(pin)
- #define gpio_write_pin_high(pin) (PORTx_ADDRESS(pin) |= _BV((pin)&0xF))
- #define gpio_write_pin_low(pin) (PORTx_ADDRESS(pin) &= ~_BV((pin)&0xF))
- #define gpio_write_pin(pin, level) ((level) ? gpio_write_pin_high(pin) : gpio_write_pin_low(pin))
- #define gpio_read_pin(pin) ((bool)(PINx_ADDRESS(pin) & _BV((pin)&0xF)))
- #define gpio_toggle_pin(pin) (PORTx_ADDRESS(pin) ^= _BV((pin)&0xF))