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90 lines
3.3 KiB
90 lines
3.3 KiB
/**
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* Marlin 3D Printer Firmware
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* Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
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*
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* Based on Sprinter and grbl.
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* Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
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* Copyright (c) 2017 Victor Perez
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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 <https://www.gnu.org/licenses/>.
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*
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*/
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#pragma once
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/**
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* Fast I/O interfaces for STM32
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* These use GPIO register access for fast port manipulation.
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*/
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// ------------------------
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// Public Variables
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// ------------------------
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extern GPIO_TypeDef * FastIOPortMap[];
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// ------------------------
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// Public functions
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// ------------------------
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void FastIO_init(); // Must be called before using fast io macros
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// ------------------------
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// Defines
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// ------------------------
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#define _BV32(b) (1UL << (b))
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#ifndef PWM
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#define PWM OUTPUT
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#endif
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#if defined(STM32F0xx) || defined(STM32F1xx) || defined(STM32F3xx) || defined(STM32L0xx) || defined(STM32L4xx)
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#define _WRITE(IO, V) do { \
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if (V) FastIOPortMap[STM_PORT(digitalPin[IO])]->BSRR = _BV32(STM_PIN(digitalPin[IO])) ; \
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else FastIOPortMap[STM_PORT(digitalPin[IO])]->BRR = _BV32(STM_PIN(digitalPin[IO])) ; \
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}while(0)
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#else
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#define _WRITE(IO, V) (FastIOPortMap[STM_PORT(digitalPin[IO])]->BSRR = _BV32(STM_PIN(digitalPin[IO]) + ((V) ? 0 : 16)))
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#endif
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#define _READ(IO) bool(READ_BIT(FastIOPortMap[STM_PORT(digitalPin[IO])]->IDR, _BV32(STM_PIN(digitalPin[IO]))))
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#define _TOGGLE(IO) (FastIOPortMap[STM_PORT(digitalPin[IO])]->ODR ^= _BV32(STM_PIN(digitalPin[IO])))
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#define _GET_MODE(IO)
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#define _SET_MODE(IO,M) pinMode(IO, M)
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#define _SET_OUTPUT(IO) pinMode(IO, OUTPUT) /*!< Output Push Pull Mode & GPIO_NOPULL */
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#define _SET_OUTPUT_OD(IO) pinMode(IO, OUTPUT_OPEN_DRAIN)
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#define WRITE(IO,V) _WRITE(IO,V)
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#define READ(IO) _READ(IO)
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#define TOGGLE(IO) _TOGGLE(IO)
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#define OUT_WRITE(IO,V) do{ _SET_OUTPUT(IO); WRITE(IO,V); }while(0)
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#define OUT_WRITE_OD(IO,V) do{ _SET_OUTPUT_OD(IO); WRITE(IO,V); }while(0)
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#define SET_INPUT(IO) _SET_MODE(IO, INPUT) /*!< Input Floating Mode */
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#define SET_INPUT_PULLUP(IO) _SET_MODE(IO, INPUT_PULLUP) /*!< Input with Pull-up activation */
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#define SET_INPUT_PULLDOWN(IO) _SET_MODE(IO, INPUT_PULLDOWN) /*!< Input with Pull-down activation */
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#define SET_OUTPUT(IO) OUT_WRITE(IO, LOW)
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#define SET_PWM(IO) _SET_MODE(IO, PWM)
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#define IS_INPUT(IO)
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#define IS_OUTPUT(IO)
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#define PWM_PIN(P) digitalPinHasPWM(P)
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#define NO_COMPILE_TIME_PWM
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// digitalRead/Write wrappers
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#define extDigitalRead(IO) digitalRead(IO)
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#define extDigitalWrite(IO,V) digitalWrite(IO,V)
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