Henrik Ekblad
2fd948fc66
Upgraded RF24 to latest version which supports SoftSPI. Added DigitalIO and UTFT libraries to support the new example. Fix problem reported in RelayWithButtonActuator example.
68 lines
2.2 KiB
C++
68 lines
2.2 KiB
C++
/* Arduino DigitalIO Library
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* Copyright (C) 2013 by William Greiman
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*
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* This file is part of the Arduino DigitalIO Library
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*
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* This Library 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 Library 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 the Arduino DigitalIO Library. If not, see
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* <http://www.gnu.org/licenses/>.
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*/
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/**
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* @file
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* @brief Digital AVR port I/O with runtime pin number.
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*
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* @defgroup runtimeDigital Runtime Pin I/O
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* @details Two Wire Interface library.
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* @{
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*/
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#include <PinIO.h>
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#include <util/atomic.h>
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#include <Arduino.h>
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//==============================================================================
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/** Constructor
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* @param[in] pin Pin assigned to this object.
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*/
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PinIO::PinIO(uint8_t pin) {
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begin(pin);
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}
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//------------------------------------------------------------------------------
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/** Initialize pin bit mask and port address.
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* @param[in] pin Arduino board pin number.
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* @return true for success or false if invalid pin number.
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*/
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bool PinIO::begin(uint8_t pin) {
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if (pin >= NUM_DIGITAL_PINS) return false;
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uint8_t port = digitalPinToPort(pin);
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pinReg_ = portInputRegister(port);
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bit_ = digitalPinToBitMask(pin);
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mask_ = ~bit_;
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portReg_ = pinReg_ + 2;
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return true;
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}
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//------------------------------------------------------------------------------
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/** Configure the pin
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*
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* @param[in] mode Configure as output mode if true else input mode.
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* @param[in] data For output mode set pin high if true else low.
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* For input mode enable 20K pullup if true else Hi-Z.
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*
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* This function may be used with interrupts enabled or disabled.
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* The previous interrupt state will be restored.
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*/
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void PinIO::config(bool mode, bool data) {
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ATOMIC_BLOCK(ATOMIC_RESTORESTATE) {
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modeI(mode);
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writeI(data);
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}
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}
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/** @} */ |