b72f10c635
* add readPort() and some API to 'tmk_core/common/*/gpio.h' The following macros have been added to gpio.h. * readPort(port) * setPortBitInput(port, bit) * setPortBitInputHigh(port, bit) * setPortBitOutput(port, bit) * writePortBitLow(port, bit) * writePortBitHigh(port, bit) * add data type 'port_data_t' into gpio.h * rename qmk_pin to pin
49 lines
2 KiB
C
49 lines
2 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 setPinOutput(pin) (DDRx_ADDRESS(pin) |= _BV((pin)&0xF))
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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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/* Operation of GPIO by port. */
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typedef uint8_t port_data_t;
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#define readPort(port) PINx_ADDRESS(port)
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#define setPortBitInput(port, bit) (DDRx_ADDRESS(port) &= ~_BV((bit)&0xF), PORTx_ADDRESS(port) &= ~_BV((bit)&0xF))
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#define setPortBitInputHigh(port, bit) (DDRx_ADDRESS(port) &= ~_BV((bit)&0xF), PORTx_ADDRESS(port) |= _BV((bit)&0xF))
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#define setPortBitOutput(port, bit) (DDRx_ADDRESS(port) |= _BV((bit)&0xF))
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#define writePortBitLow(port, bit) (PORTx_ADDRESS(port) &= ~_BV((bit)&0xF))
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#define writePortBitHigh(port, bit) (PORTx_ADDRESS(port) |= _BV((bit)&0xF))
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