577a5d7f96
- Rename the project to FreeTRX (fork of OpenGD77). - New README.md documenting the fork and its upstream source (OpenGD77 R20260131 / OpenGD77_MDUV380_DM1701_20260130). - Preserve the original project README as README.OpenGD77.md. - Add LICENSE.md reproducing the inherited OpenGD77 license (modified BSD 3-Clause + non-commercial clause). The license is NOT GPL-compatible and cannot be relicensed; all original copyrights are retained. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
100 lines
3.3 KiB
Markdown
100 lines
3.3 KiB
Markdown
# OpenGD77
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Firmware for DMR transceivers using the STM32F405VGT MCU, AT1846S RF chip and HR-C6000 DMR chipset.
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Including the Radioddiy TYT MD-380UV / Retevis RT-3S and Baofeng DM-1701 / Retevis RT-84
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# Project status
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The firmware is relatively stable and provides DMR and FM audio transmission and reception, as well as a DMR hotspot mode.
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However it does not support some core functionality that the official firmware supports, including sending and receiving of text / SMS messages
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The firmware source code does not contain a AMBE codec required for DMR operation.
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This functionality is provided by the official firmware which is merged with the OpenGD77 by the OpenGD77CPS or firmware loader
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# User guide
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See https://github.com/LibreDMR/OpenGD77_UserGuide
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# Credits
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Originally conceived by Kai DG4KLU.
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Further development by Roger VK3KYY, latterly assisted by Daniel F1RMB, Alex DL4LEX, Colin G4EML and others.
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Current lead developer and source code gatekeeper is Roger VK3KYY
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# Copyright
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The firmware is copyright of the OpenGD77 developers. See individual source files for copyright information.
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## MCU SDK and API code:
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See license files in sub-folders
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## FreeRTOS
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Copyright (C) 2020 Amazon.com, Inc. or its affiliates.
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All Rights Reserved.
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# License
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Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions
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are met:
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1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer
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in the documentation and/or other materials provided with the distribution.
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3. Neither the name of the copyright holder nor the names of its contributors may be used to endorse or promote products derived
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from this software without specific prior written permission.
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4. Use of this source code or binary releases for commercial purposes is strictly forbidden. This includes, without limitation,
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incorporation in a commercial product or incorporation into a product or project which allows commercial use.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
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ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
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USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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# Special thanks
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Thanks to those who have assisted the project including :
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BD4VOW
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CT1HSN
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CT4TX
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DG3GSP
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DG4KLU
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DJ0HF
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DL4LEX
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EA3BIL
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EA3IGM
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EA5SW
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EB3AM
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EW1ADG
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F1CXG
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F1RMB
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G4ELM
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IK0NWG
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IU4LEG
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IZ2EIB
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JE4SMQ
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JG1UAA
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OH1E
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OK2HAD
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ON1HK
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ON7LDS
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OZ1MAX
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PU4RON
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SQ6SFO
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SQ7PTE
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TA5AYX
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VK3KYY
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VK4JWT
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VK7JS
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VK7ZCR
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VK7ZJA
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ZL1XE
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