Add the KISS encoding.
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692d6519db
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1 changed files with 33 additions and 10 deletions
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@ -25,7 +25,14 @@
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#include <cassert>
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#include <cstring>
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const unsigned int BUFFER_LENGTH = 200U;
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const unsigned int BUFFER_LENGTH = 500U;
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const unsigned char AX25_KISS_DATA = 0x00U;
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const unsigned char AX25_FEND = 0xC0U;
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const unsigned char AX25_FESC = 0xDBU;
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const unsigned char AX25_TFEND = 0xDCU;
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const unsigned char AX25_TFESC = 0xDDU;
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CAX25Network::CAX25Network(const std::string& port, unsigned int speed, bool debug) :
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m_serial(port, SERIAL_SPEED(speed), false), // XXX
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@ -62,20 +69,36 @@ bool CAX25Network::write(const unsigned char* data, unsigned int length)
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{
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assert(data != NULL);
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unsigned char buffer[110U];
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::memset(buffer, 0x00U, 110U);
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m_txLength = 0U;
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m_txOffset = 0U;
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buffer[0U] = 'A';
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buffer[1U] = 'X';
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buffer[2U] = '2';
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buffer[3U] = '5';
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m_txData[m_txLength++] = AX25_FEND;
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m_txData[m_txLength++] = AX25_KISS_DATA;
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::memcpy(buffer + 4U, data, length);
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for (unsigned int i = 0U; i < length; i++) {
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unsigned char c = data[i];
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switch (c) {
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case AX25_FEND:
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m_txData[m_txLength++] = AX25_FESC;
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m_txData[m_txLength++] = AX25_TFEND;
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break;
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case AX25_FESC:
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m_txData[m_txLength++] = AX25_FESC;
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m_txData[m_txLength++] = AX25_TFESC;
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break;
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default:
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m_txData[m_txLength++] = c;
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break;
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}
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}
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m_txData[m_txLength++] = AX25_FEND;
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if (m_debug)
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CUtils::dump(1U, "AX25 Network Data Sent", buffer, length + 4U);
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CUtils::dump(1U, "AX25 Network Data Sent", m_txData, m_txLength);
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return m_socket.write(buffer, length + 4U, m_address, m_port);
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return m_serial.write(m_txData, m_txLength);
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}
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void CAX25Network::reset()
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