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84 lines
2.3 KiB
C++
84 lines
2.3 KiB
C++
/*
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N2kStream.cpp
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Copyright (c) 2015-2021 Timo Lappalainen, Kave Oy, www.kave.fi
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Permission is hereby granted, free of charge, to any person obtaining a copy of
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this software and associated documentation files (the "Software"), to deal in
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the Software without restriction, including without limitation the rights to use,
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copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the
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Software, and to permit persons to whom the Software is furnished to do so,
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subject to the following conditions:
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The above copyright notice and this permission notice shall be included in all
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copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
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INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
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PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
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HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
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CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE
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OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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I/O stream used in the NMEA2000 libraries.
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*/
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#include "N2kStream.h"
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#include <string.h>
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#ifdef ARDUINO
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// Arduino uses its own implementation.
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#else
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size_t N2kStream::print(const char *str) {
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if(str == 0)
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return 0;
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return write(reinterpret_cast<const uint8_t*>(str), strlen(str));
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}
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#if defined(__AVR__)
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size_t N2kStream::print(const __FlashStringHelper* str) {
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size_t bytes_written = 0;
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PGM_P src = (PGM_P) str;
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for(uint8_t c = pgm_read_byte(src); c != 0; ++src, ++bytes_written)
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write(&c, 1);
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return bytes_written;
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}
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size_t N2kStream::print(const __FlashStringHelper* str) {
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return print(str) + print("\r\n");
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}
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#endif
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size_t N2kStream::print(int val, uint8_t radix) {
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if(val == 0) {
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// 0 is always 0 regardless of radix.
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return write(reinterpret_cast<const uint8_t*>("0"), 1);
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}
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// Enough for binary representation.
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char buf[8 * sizeof(val) + 1];
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char *ptr = &buf[sizeof(buf) - 1];
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*ptr = '\0';
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do {
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*--ptr="0123456789abcdef"[val % radix];
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val /= radix;
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} while(val != 0);
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return print(ptr);
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}
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size_t N2kStream::println(const char *str) {
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return print(str) + print("\r\n");
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}
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size_t N2kStream::println(int val, uint8_t radix) {
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return print(val, radix) + print("\r\n");
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}
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#endif
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