forked from forks/qmk_firmware
6e40dfa022
* Add open-drain GPIO support. * `qmk format-c` * Wording. * Remove port GPIO implementations as the only board that uses it has its own internal defs anyway. Will wait for first-class handling of ports in core before reimplementing.
39 lines
1.6 KiB
C
39 lines
1.6 KiB
C
/* Copyright 2021 QMK
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#pragma once
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#include <avr/io.h>
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#include "pin_defs.h"
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typedef uint8_t pin_t;
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/* Operation of GPIO by pin. */
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#define setPinInput(pin) (DDRx_ADDRESS(pin) &= ~_BV((pin)&0xF), PORTx_ADDRESS(pin) &= ~_BV((pin)&0xF))
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#define setPinInputHigh(pin) (DDRx_ADDRESS(pin) &= ~_BV((pin)&0xF), PORTx_ADDRESS(pin) |= _BV((pin)&0xF))
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#define setPinInputLow(pin) _Static_assert(0, "AVR processors cannot implement an input as pull low")
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#define setPinOutputPushPull(pin) (DDRx_ADDRESS(pin) |= _BV((pin)&0xF))
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#define setPinOutputOpenDrain(pin) _Static_assert(0, "AVR platform does not implement an open-drain output")
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#define setPinOutput(pin) setPinOutputPushPull(pin)
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#define writePinHigh(pin) (PORTx_ADDRESS(pin) |= _BV((pin)&0xF))
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#define writePinLow(pin) (PORTx_ADDRESS(pin) &= ~_BV((pin)&0xF))
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#define writePin(pin, level) ((level) ? writePinHigh(pin) : writePinLow(pin))
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#define readPin(pin) ((bool)(PINx_ADDRESS(pin) & _BV((pin)&0xF)))
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#define togglePin(pin) (PORTx_ADDRESS(pin) ^= _BV((pin)&0xF))
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