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78 lines
3.1 KiB
C++
78 lines
3.1 KiB
C++
/***********************************************************************************************************************
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* based on XMODEM implementation by Georges Menie (www.menie.org)
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***********************************************************************************************************************
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* Copyright 2001-2019 Georges Menie (www.menie.org)
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* All rights reserved.
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*
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* Adapted for protobuf encapsulation. this is not really Xmodem any more.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* * Neither the name of the University of California, Berkeley nor the
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* names of its contributors may be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE REGENTS AND CONTRIBUTORS BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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**********************************************************************************************************************/
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#pragma once
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#include "FSCommon.h"
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#include "configuration.h"
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#include "mesh/generated/meshtastic/xmodem.pb.h"
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#define MAXRETRANS 25
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class XModemAdapter
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{
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public:
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// Called when we put a fragment in the outgoing memory
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Observable<uint32_t> packetReady;
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XModemAdapter();
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void handlePacket(meshtastic_XModem xmodemPacket);
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meshtastic_XModem getForPhone();
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void resetForPhone();
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private:
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bool isReceiving = false;
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bool isTransmitting = false;
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bool isEOT = false;
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int retrans = MAXRETRANS;
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uint16_t packetno = 0;
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#if defined(ARCH_NRF52)
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File file = File(FSCom);
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#else
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File file;
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#endif
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char filename[sizeof(meshtastic_XModem_buffer_t::bytes)] = {0};
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protected:
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meshtastic_XModem xmodemStore = meshtastic_XModem_init_zero;
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unsigned short crc16_ccitt(const pb_byte_t *buffer, int length);
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int check(const pb_byte_t *buf, int sz, unsigned short tcrc);
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void sendControl(meshtastic_XModem_Control c);
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};
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extern XModemAdapter xModem;
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