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59 lines
2.0 KiB
59 lines
2.0 KiB
/* |
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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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size_t write(const char *str); |
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virtual uint32_t available() = 0; |
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/* return value for read(): |
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* -1 if nothing available, uint8_t value otherwise. */ |
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virtual int16_t read() = 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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