mirror of https://github.com/g4klx/MMDVM.git
67 lines
1.7 KiB
C++
67 lines
1.7 KiB
C++
/*
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* Copyright (C) 2009-2015,2020,2021 by Jonathan Naylor G4KLX
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* Copyright (C) 2016 by Colin Durbridge G4EML
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*
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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 2 of the License, or
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* (at your option) any later version.
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*
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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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*
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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, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include "Config.h"
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#if defined(MODE_M17)
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#include "Globals.h"
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#include "CalM17.h"
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#include "M17Defines.h"
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const uint8_t PREAMBLE[] = {0x00U,
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0x77U, 0x77U, 0x77U, 0x77U, 0x77U, 0x77U, 0x77U, 0x77U,
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0x77U, 0x77U, 0x77U, 0x77U, 0x77U, 0x77U, 0x77U, 0x77U,
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0x77U, 0x77U, 0x77U, 0x77U, 0x77U, 0x77U, 0x77U, 0x77U,
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0x77U, 0x77U, 0x77U, 0x77U, 0x77U, 0x77U, 0x77U, 0x77U,
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0x77U, 0x77U, 0x77U, 0x77U, 0x77U, 0x77U, 0x77U, 0x77U,
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0x77U, 0x77U, 0x77U, 0x77U, 0x77U, 0x77U, 0x77U, 0x77U};
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CCalM17::CCalM17() :
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m_transmit(false)
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{
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}
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void CCalM17::process()
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{
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m17TX.process();
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if (!m_transmit)
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return;
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uint16_t space = m17TX.getSpace();
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if (space < 2U)
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return;
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m17TX.writeData(PREAMBLE, M17_FRAME_LENGTH_BYTES + 1U);
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}
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uint8_t CCalM17::write(const uint8_t* data, uint16_t length)
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{
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if (length != 1U)
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return 4U;
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m_transmit = data[0U] == 1U;
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return 0U;
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}
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#endif
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