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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 STM32
* These use GPIO register access for fast port manipulation.
*/
// ------------------------
// Public Variables
// ------------------------
extern GPIO_TypeDef * FastIOPortMap[];
// ------------------------
// Public functions
// ------------------------
void FastIO_init(); // Must be called before using fast io macros
// ------------------------
// Defines
// ------------------------
#define _BV32(b) (1UL << (b))
#ifndef PWM
#define PWM OUTPUT
#endif
#if defined(STM32F0xx) || defined(STM32F1xx) || defined(STM32F3xx) || defined(STM32L0xx) || defined(STM32L4xx)
#define _WRITE(IO, V) do { \
if (V) FastIOPortMap[STM_PORT(digitalPinToPinName(IO))]->BSRR = _BV32(STM_PIN(digitalPinToPinName(IO))) ; \
else FastIOPortMap[STM_PORT(digitalPinToPinName(IO))]->BRR = _BV32(STM_PIN(digitalPinToPinName(IO))) ; \
}while(0)
#else
#define _WRITE(IO, V) (FastIOPortMap[STM_PORT(digitalPinToPinName(IO))]->BSRR = _BV32(STM_PIN(digitalPinToPinName(IO)) + ((V) ? 0 : 16)))
#endif
#define _READ(IO) bool(READ_BIT(FastIOPortMap[STM_PORT(digitalPinToPinName(IO))]->IDR, _BV32(STM_PIN(digitalPinToPinName(IO)))))
#define _TOGGLE(IO) TBI32(FastIOPortMap[STM_PORT(digitalPinToPinName(IO))]->ODR, STM_PIN(digitalPinToPinName(IO)))
#define _GET_MODE(IO)
#define _SET_MODE(IO,M) pinMode(IO, M)
#define _SET_OUTPUT(IO) pinMode(IO, OUTPUT) //!< Output Push Pull Mode & GPIO_NOPULL
#define _SET_OUTPUT_OD(IO) pinMode(IO, OUTPUT_OPEN_DRAIN)
#define WRITE(IO,V) _WRITE(IO,V)
#define READ(IO) _READ(IO)
#define TOGGLE(IO) _TOGGLE(IO)
#define OUT_WRITE(IO,V) do{ _SET_OUTPUT(IO); WRITE(IO,V); }while(0)
#define OUT_WRITE_OD(IO,V) do{ _SET_OUTPUT_OD(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 IS_INPUT(IO)
#define IS_OUTPUT(IO)
#define PWM_PIN(P) digitalPinHasPWM(P)
#define NO_COMPILE_TIME_PWM
// digitalRead/Write wrappers
#define extDigitalRead(IO) digitalRead(IO)
#define extDigitalWrite(IO,V) digitalWrite(IO,V)
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