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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
- *
- * 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
-
- /**
- * Fast I/O Routines for LPC1768/9
- * Use direct port manipulation to save scads of processor time.
- * Contributed by Triffid_Hunter and modified by Kliment, thinkyhead, Bob-the-Kuhn, et.al.
- */
-
- /**
- * Description: Fast IO functions LPC1768
- *
- * For TARGET LPC1768
- */
-
- #include "../shared/Marduino.h"
-
- #define PWM_PIN(P) true // all pins are PWM capable
-
- #define LPC_PIN(pin) LPC176x::gpio_pin(pin)
- #define LPC_GPIO(port) LPC176x::gpio_port(port)
-
- #define SET_DIR_INPUT(IO) LPC176x::gpio_set_input(IO)
- #define SET_DIR_OUTPUT(IO) LPC176x::gpio_set_output(IO)
-
- #define SET_MODE(IO, mode) pinMode(IO, mode)
-
- #define WRITE_PIN_SET(IO) LPC176x::gpio_set(IO)
- #define WRITE_PIN_CLR(IO) LPC176x::gpio_clear(IO)
-
- #define READ_PIN(IO) LPC176x::gpio_get(IO)
- #define WRITE_PIN(IO,V) LPC176x::gpio_set(IO, V)
-
- /**
- * Magic I/O routines
- *
- * Now you can simply SET_OUTPUT(STEP); WRITE(STEP, HIGH); WRITE(STEP, LOW);
- *
- * Why double up on these macros? see https://gcc.gnu.org/onlinedocs/gcc-4.8.5/cpp/Stringification.html
- */
-
- /// Read a pin
- #define _READ(IO) READ_PIN(IO)
-
- /// Write to a pin
- #define _WRITE(IO,V) WRITE_PIN(IO,V)
-
- /// toggle a pin
- #define _TOGGLE(IO) _WRITE(IO, !READ(IO))
-
- /// set pin as input
- #define _SET_INPUT(IO) SET_DIR_INPUT(IO)
-
- /// set pin as output
- #define _SET_OUTPUT(IO) SET_DIR_OUTPUT(IO)
-
- /// set pin as input with pullup mode
- #define _PULLUP(IO,V) pinMode(IO, (V) ? INPUT_PULLUP : INPUT)
-
- /// set pin as input with pulldown mode
- #define _PULLDOWN(IO,V) pinMode(IO, (V) ? INPUT_PULLDOWN : INPUT)
-
- /// check if pin is an input
- #define _IS_INPUT(IO) (!LPC176x::gpio_get_dir(IO))
-
- /// check if pin is an output
- #define _IS_OUTPUT(IO) (LPC176x::gpio_get_dir(IO))
-
- /// Read a pin wrapper
- #define READ(IO) _READ(IO)
-
- /// Write to a pin wrapper
- #define WRITE(IO,V) _WRITE(IO,V)
-
- /// toggle a pin wrapper
- #define TOGGLE(IO) _TOGGLE(IO)
-
- /// set pin as input wrapper
- #define SET_INPUT(IO) _SET_INPUT(IO)
- /// set pin as input with pullup wrapper
- #define SET_INPUT_PULLUP(IO) do{ _SET_INPUT(IO); _PULLUP(IO, HIGH); }while(0)
- /// set pin as input with pulldown wrapper
- #define SET_INPUT_PULLDOWN(IO) do{ _SET_INPUT(IO); _PULLDOWN(IO, HIGH); }while(0)
- /// set pin as output wrapper - reads the pin and sets the output to that value
- #define SET_OUTPUT(IO) do{ _WRITE(IO, _READ(IO)); _SET_OUTPUT(IO); }while(0)
- // set pin as PWM
- #define SET_PWM SET_OUTPUT
-
- /// check if pin is an input wrapper
- #define IS_INPUT(IO) _IS_INPUT(IO)
- /// check if pin is an output wrapper
- #define IS_OUTPUT(IO) _IS_OUTPUT(IO)
-
- // Shorthand
- #define OUT_WRITE(IO,V) do{ SET_OUTPUT(IO); WRITE(IO,V); }while(0)
-
- // digitalRead/Write wrappers
- #define extDigitalRead(IO) digitalRead(IO)
- #define extDigitalWrite(IO,V) digitalWrite(IO,V)
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