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Kaleidoscope/src/kaleidoscope/progmem_helpers.h

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// -*- mode: c++ -*-
/* Kaleidoscope - Firmware for computer input devices
* Copyright (C) 2013-2019 Keyboard.io, Inc.
*
* 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, version 3.
*
* 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
#include <Arduino.h> // for memcpy_P
// Load any intrinsic data type or trivial class stored in PROGMEM into an
// object of that type in memory.
template<typename _Type>
void loadFromProgmem(_Type const &pgm_object, _Type &object) {
memcpy_P(&object, &pgm_object, sizeof(object));
}
// Copy an object from PROGMEM to RAM. This works as long as the type has a
// suitable constructor that does not require arguments (i.e. "trivial classes")
// or if `_Type` is an intrinsic data type.
template<typename _Type>
_Type cloneFromProgmem(_Type const &pgm_object) {
_Type object;
memcpy_P(&object, &pgm_object, sizeof(object));
return object;
}