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https://github.com/g4klx/MMDVM.git
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9f47e67630
Modem was crashing on Teensy when running in DMO mode. Crashed as soon as Tx started. Traced to exceeding the bounds of m_poBuffer during the txdelay phase. m_poBuffer was dimensioned to 80 but m_txdelay could be 600 to 1200 so a massive overwrite was happening. Surprisingly this didn't crash on the Due only on the Teensy.
55 lines
1.5 KiB
C++
55 lines
1.5 KiB
C++
/*
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* Copyright (C) 2015,2016 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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#if !defined(DMRDMOTX_H)
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#define DMRDMOTX_H
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#include "Config.h"
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#include "DMRDefines.h"
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#include "SerialRB.h"
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class CDMRDMOTX {
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public:
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CDMRDMOTX();
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uint8_t writeData(const uint8_t* data, uint8_t length);
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void process();
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void setTXDelay(uint8_t delay);
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uint16_t getSpace() const;
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private:
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CSerialRB m_fifo;
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arm_fir_instance_q15 m_modFilter;
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q15_t m_modState[70U]; // NoTaps + BlockSize - 1, 42 + 20 - 1 plus some spare
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uint8_t m_poBuffer[1200U];
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uint16_t m_poLen;
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uint16_t m_poPtr;
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uint16_t m_txDelay;
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uint32_t m_count;
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void writeByte(uint8_t c);
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};
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#endif
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