mirror of https://github.com/ArduPilot/ardupilot
61 lines
2.0 KiB
C++
61 lines
2.0 KiB
C++
/*
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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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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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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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//
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// Copyright (c) 2010 Michael Smith. All rights reserved.
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//
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//
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#ifndef __AP_HAL_UTILITY_BETTERSTREAM_H__
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#define __AP_HAL_UTILITY_BETTERSTREAM_H__
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#include <stdarg.h>
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#include "../AP_HAL_Namespace.h"
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#include "Stream.h"
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/* prog_char_t: */
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#include <AP_Progmem.h>
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/* AP_HAL::BetterStream is a pure virtual interface. It resembles
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* Michael Smith's BetterStream library for Arduino.
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* The Michael Smith BetterStream provided some implementations for AVR based
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* on _vprintf().
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* Please provide your own platform-specic implementation of vprintf, sprintf,
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* etc. to implement the printf functions.
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*
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* TODO: Segregate prog_char_t dependent functions to be available on AVR
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* platform only, with default implementations elsewhere.
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*/
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class AP_HAL::BetterStream : public AP_HAL::Stream {
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public:
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BetterStream(void) {}
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virtual void print_P(const prog_char_t *) = 0;
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virtual void println_P(const prog_char_t *) = 0;
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virtual void printf(const char *, ...)
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__attribute__ ((format(__printf__, 2, 3))) = 0;
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/* No format checking on printf_P: can't currently support that on AVR */
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virtual void _printf_P(const prog_char *, ...) = 0;
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#define printf_P(fmt, ...) _printf_P((const prog_char *)fmt, ## __VA_ARGS__)
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virtual void vprintf(const char *, va_list) = 0;
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virtual void vprintf_P(const prog_char *, va_list) = 0;
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};
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#endif // __AP_HAL_UTILITY_BETTERSTREAM_H__
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