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N2kDef.h
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/*
* N2kDef.h
* Copyright (c) 2019-2023 Timo Lappalainen, Kave Oy, www.kave.fi
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
/*************************************************************************//**
* \file N2kDef.h
* \brief Type definitions and utility macros used in the NMEA2000 libraries.
*
*/
#ifndef _tN2kDef_H_
#define _tN2kDef_H_
#include <stdint.h>
#if !defined(ARDUINO)
extern "C" {
// Current uptime in milliseconds. Must be implemented by application.
extern uint32_t millis();
}
#endif
// Declare PROGMEM macros to nothing on non-AVR targets.
#if !defined(__AVR__) && !defined(ARDUINO)
// ESP8266 provides it's own definition - Do not override it.
#if !defined(ARDUINO_ARCH_ESP8266)
#define PROGMEM
#define pgm_read_byte(var) *var
#define pgm_read_word(var) *var
#define pgm_read_dword(var) *var
#endif
#endif
// Definition for the F(str) macro. On Arduinos use what the framework
// provides to utilize the Stream class. On standard AVR8 we declare
// our own helper class which is handled by the N2kStream. On anything
// else we resort to char strings.
#if defined(ARDUINO)
#include <WString.h>
#elif defined(__AVR__)
#include <avr/pgmspace.h>
class __FlashStringHelper;
#define F(str) (reinterpret_cast<const __FlashStringHelper*>(PSTR(str)))
#else
#ifndef F
#define F(str) str
#endif
#endif
#endif