Firmware for DMR transceivers using the NXP MK22 MCU, AT1846S RF chip and HR-C6000 DMR chipset. This includes the Radioddiy GD-77, Radioddity GD-77s, Baofeng DM-1801 and Baofeng RD-5R.

This repo began as a fork of rogerclarkmelborune/OpenGD77, which has since been deleted. It contains the latest known publicly-released code.

Development of OpenGD77 appears to have resumed, with firmware and code being released at https://www.opengd77.com/downloads/. The authors have unfortunately chosen not to publish the new code on GitHub. The sole purpose of this repository is therefore to preserve the code.

The firmware generated by this project includes binary code from the official Radioddity firmware. The CODEC from the original binary is re-used to avoid intellectual property infringement. Distributing the resulting binary is therefore problematic from a intellectual property perspective.

Please see BUILD.md for toolchain and build instructions.

Originally conceived by Kai DG4KLU. Further development by Roger VK3KYY, latterly assisted by Daniel F1RMB, Alex DL4LEX, Colin G4EML and many others. RD-5R initial development by EW1ADG

Special thanks to Jason VK7ZJA for his work on the memory map and RF hardware of the GD-77 Also thanks for Ian DJ0HF for his work coordinating the requirements of blind and visually impaired operators.

Thanks also to all the translation contributors including:

CT4TX, CT1HSN

DG3GSP, DL4LEX

EA3IGM, EA5SW

EA3IGM, EA5SW, EB3AM, EA3BIL

F1CXG, F1RMB

IU4LEG, IZ2EIB

JE4SMQ

OH1E

OK2HAD

ON7LDS

OZ1MAX

PU4RON

SQ7PTE

TA5AYX

This software is licensed under the GPL v2 and is intended for Amateur Radio and educational use only.

THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.