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- /**
- * Marlin 3D Printer Firmware
- * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
- *
- * Based on Sprinter and grbl.
- * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
- * Copyright (c) 2017 Victor Perez
- *
- * 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 <https://www.gnu.org/licenses/>.
- *
- */
- #pragma once
-
- /**
- * Fast I/O interfaces for Teensy 4
- * These use GPIO functions instead of Direct Port Manipulation, as on AVR.
- */
-
- #ifndef PWM
- #define PWM OUTPUT
- #endif
-
- #define READ(IO) digitalRead(IO)
- #define WRITE(IO,V) digitalWrite(IO,V)
-
- #define _GET_MODE(IO) !is_output(IO)
- #define _SET_MODE(IO,M) pinMode(IO, M)
- #define _SET_OUTPUT(IO) pinMode(IO, OUTPUT) /*!< Output Push Pull Mode & GPIO_NOPULL */
-
- #define OUT_WRITE(IO,V) do{ _SET_OUTPUT(IO); WRITE(IO,V); }while(0)
-
- #define SET_INPUT(IO) _SET_MODE(IO, INPUT) /*!< Input Floating Mode */
- #define SET_INPUT_PULLUP(IO) _SET_MODE(IO, INPUT_PULLUP) /*!< Input with Pull-up activation */
- #define SET_INPUT_PULLDOWN(IO) _SET_MODE(IO, INPUT_PULLDOWN) /*!< Input with Pull-down activation */
- #define SET_OUTPUT(IO) OUT_WRITE(IO, LOW)
- #define SET_PWM(IO) _SET_MODE(IO, PWM)
-
- #define TOGGLE(IO) OUT_WRITE(IO, !READ(IO))
-
- #define IS_INPUT(IO) !is_output(IO)
- #define IS_OUTPUT(IO) is_output(IO)
-
- #define PWM_PIN(P) digitalPinHasPWM(P)
-
- // digitalRead/Write wrappers
- #define extDigitalRead(IO) digitalRead(IO)
- #define extDigitalWrite(IO,V) digitalWrite(IO,V)
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