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Marlin-Artillery-M600/Marlin/src/HAL/HAL_LPC1768/fastio.h

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2017-06-17 23:19:42 +02:00
/**
* Marlin 3D Printer Firmware
* Copyright (C) 2016 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/>.
*
*/
/**
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* 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.
*/
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/**
* Description: Fast IO functions LPC1768
*
* For TARGET LPC1768
*/
#ifndef _FASTIO_LPC1768_H
#define _FASTIO_LPC1768_H
#include <LPC17xx.h>
#include "arduino.h"
#include "pinmapping.h"
bool useable_hardware_PWM(uint8_t pin);
#define USEABLE_HARDWARE_PWM(pin) useable_hardware_PWM(pin)
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#define LPC_PORT_OFFSET (0x0020)
#define LPC_PIN(pin) (1UL << pin)
#define LPC_GPIO(port) ((volatile LPC_GPIO_TypeDef *)(LPC_GPIO0_BASE + LPC_PORT_OFFSET * port))
#define SET_DIR_INPUT(IO) (LPC_GPIO(LPC1768_PIN_PORT(IO))->FIODIR &= ~LPC_PIN(LPC1768_PIN_PIN(IO)))
#define SET_DIR_OUTPUT(IO) (LPC_GPIO(LPC1768_PIN_PORT(IO))->FIODIR |= LPC_PIN(LPC1768_PIN_PIN(IO)))
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#define SET_MODE(IO, mode) (pin_mode((LPC1768_PIN_PORT(IO), LPC1768_PIN_PIN(IO)), mode))
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#define WRITE_PIN_SET(IO) (LPC_GPIO(LPC1768_PIN_PORT(IO))->FIOSET = LPC_PIN(LPC1768_PIN_PIN(IO)))
#define WRITE_PIN_CLR(IO) (LPC_GPIO(LPC1768_PIN_PORT(IO))->FIOCLR = LPC_PIN(LPC1768_PIN_PIN(IO)))
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#define READ_PIN(IO) ((LPC_GPIO(LPC1768_PIN_PORT(IO))->FIOPIN & LPC_PIN(LPC1768_PIN_PIN(IO))) ? 1 : 0)
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#define WRITE_PIN(IO, v) ((v) ? WRITE_PIN_SET(IO) : WRITE_PIN_CLR(IO))
/**
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* Magic I/O routines
*
* Now you can simply SET_OUTPUT(STEP); WRITE(STEP, HIGH); WRITE(STEP, LOW);
*
* Why double up on these macros? see http://gcc.gnu.org/onlinedocs/cpp/Stringification.html
*/
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/// Read a pin
#define _READ(IO) READ_PIN(IO)
/// Write to a pin
#define _WRITE_VAR(IO, v) digitalWrite(IO, v)
#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!=LOW ? INPUT_PULLUP : INPUT)))
/// check if pin is an input
#define _GET_INPUT(IO)
/// check if pin is an output
#define _GET_OUTPUT(IO)
/// check if pin is an timer
#define _GET_TIMER(IO)
/// Read a pin wrapper
#define READ(IO) _READ(IO)
/// Write to a pin wrapper
#define WRITE_VAR(IO, v) _WRITE_VAR(IO, v)
#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 output wrapper
#define SET_OUTPUT(IO) do{ _SET_OUTPUT(IO); _WRITE(IO, LOW); }while(0)
/// check if pin is an input wrapper
#define GET_INPUT(IO) _GET_INPUT(IO) // todo: Never used?
/// check if pin is an output wrapper
#define GET_OUTPUT(IO) _GET_OUTPUT(IO) //todo: Never Used?
/// check if pin is an timer wrapper
#define GET_TIMER(IO) _GET_TIMER(IO)
// Shorthand
#define OUT_WRITE(IO, v) { SET_OUTPUT(IO); WRITE(IO, v); }
#endif // _FASTIO_LPC1768_H