mirror of https://github.com/ArduPilot/ardupilot
59 lines
1.9 KiB
C++
59 lines
1.9 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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#pragma once
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#include <AP_Common/AP_Common.h>
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#include <AP_HAL/AP_HAL_Namespace.h>
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#include <stdarg.h>
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#include <unistd.h>
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class AP_HAL::BetterStream {
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public:
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virtual void printf(const char *, ...) FMT_PRINTF(2, 3);
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virtual void vprintf(const char *, va_list);
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void print(const char *str) { write(str); }
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void println(const char *str) { printf("%s\r\n", str); }
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virtual size_t write(uint8_t) = 0;
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virtual size_t write(const uint8_t *buffer, size_t size) = 0;
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virtual size_t write(const char *str);
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virtual uint32_t available() = 0;
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virtual int16_t read(void);
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virtual bool read(uint8_t &b) WARN_IF_UNUSED = 0;
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// no base-class implementation to force descendants to
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// do things efficiently. Looping over 2^32-1 bytes would be bad.
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// returns false if discard failed (e.g. port locked)
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virtual bool discard_input() = 0; // discard all bytes available for reading
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// returns -1 on error (e.g. port locked), number of bytes read
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// otherwise
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virtual ssize_t read(uint8_t *buffer, uint16_t count);
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/* NB txspace was traditionally a member of BetterStream in the
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* FastSerial library. As far as concerns go, it belongs with available() */
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virtual uint32_t txspace() = 0;
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};
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