MMDVMHost-Private/README.md

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These are the source files for building the MMDVMHost, the program that
interfaces to the MMDVM or DVMega on the one side, and a suitable network on
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the other. It supports D-Star, DMR, P25 Phase 1, NXDN, System Fusion, M17,
POCSAG, FM, and AX.25 on the MMDVM, and D-Star, DMR, and System Fusion on the DVMega.
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On the D-Star side the MMDVMHost interfaces with the ircDDB Gateway, on DMR it
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connects to the DMR Gateway to allow for connection to multiple DMR networks,
or a single network directly. on System Fusion it connects to the YSF Gateway to allow
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access to the FCS and YSF networks. On P25 it connects to the P25 Gateway. On
NXDN it connects to the NXDN Gateway which provides access to the NXDN and
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NXCore talk groups. On M17 it uses the M17 Gateway to access the M17 reflector system.
It uses the DAPNET Gateway to access DAPNET to receive
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paging messages. Finally it uses the FM Gateway to interface to existing FM
networks.
It builds on 32-bit and 64-bit Linux as well as on Windows using Visual Studio
2019 on x86 and x64. It can optionally control various Displays. Currently
these are:
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- HD44780 (sizes 2x16, 2x40, 4x16, 4x20)
- Support for HD44780 via 4 bit GPIO connection (user selectable pins)
- Adafruit 16x2 LCD+Keypad Kits (I2C)
- Connection via PCF8574 GPIO Extender (I2C)
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- Nextion TFTs (all sizes, both Basic and Enhanced versions)
- OLED 128x64 (SSD1306)
- LCDproc
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The Nextion displays can connect to the UART on the Raspberry Pi, or via a USB
to TTL serial converter like the FT-232RL. It may also be connected to the UART
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output of the MMDVM modem (Arduino Due, STM32, Teensy).
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The HD44780 displays are integrated with wiringPi for Raspberry Pi based
platforms.
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The OLED display needs an extra library see OLED.md
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The LCDproc support enables the use of a multitude of other LCD screens. See
the [supported devices](http://lcdproc.omnipotent.net/hardware.php3) page on
the LCDproc website for more info.
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This software is licenced under the GPL v2 and is intended for amateur and
educational use only. Use of this software for commercial purposes is strictly
forbidden.