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Tim Stewart 8874d1262b Detect DV Fast Data on a per-frame basis 
This commit adds a maybeFixupVoiceFrame() function that is used by
both the RF and Net code to manage FEC regeneration and DTMF blanking
in voice frames.

The presence of Fast Data is discovered by reading the mini-header in
every second data frame.  If found, FEC regeneration and DTMF blanking
are disabled for the current and next voice frames.

An exception is voice frames that have a sync frame instead of a data
frame.  This commit always disables FEC regeneration and DTMF blanking
for these frames.  A later commit will add support for these frames by
setting aside the voice frame until the next data frame can be read.

This commit also includes a number of debugging statements that will
be removed in a later commit.
2020-11-29 16:12:58 -05:00
Images
Better YSF image
2018-08-12 11:27:03 +02:00
linux
Added a new address the id's list
2020-08-10 15:36:12 +03:00
Nextion_DB2OE
Add DB2OE Nextion layouts.
2017-08-20 12:35:03 +01:00
Nextion_G4KLX
Better YSF image
2018-08-12 11:27:03 +02:00
Nextion_ON7LDS
Add more dynamic variables and fix command manging
2018-09-05 16:12:12 -04:00
RSSI
Create RSSI_FC-302_RptrBldrV2.dat
2018-02-04 14:30:23 +01:00
TFTSerial
Change the NXDN image to be less garish.
2018-01-22 20:17:47 +00:00
UMP
nitial commit of POCSAG files.
2018-06-07 18:46:03 +01:00
.gitignore
Revert "Merge pull request #648 from xfxian/logrotate"
2020-10-30 13:34:13 +00:00
AMBEFEC.cpp
Re-add the audio blanking for too corrupt audio in DMR, NXDN and YSFDN
2018-03-07 20:14:07 +00:00
AMBEFEC.h
Re-add the audio blanking for too corrupt audio in DMR, NXDN and YSFDN
2018-03-07 20:14:07 +00:00
BCH.cpp
Change the semantics of the NID processor.
2016-09-19 22:26:42 +01:00
BCH.h
Add the P25 NID BCH encoder.
2016-09-19 21:41:34 +01:00
BPTC19696.cpp
Add new Hamming for YSF.
2016-04-19 06:50:51 +01:00
BPTC19696.h
Initial commit
2016-01-14 18:45:04 +00:00
CASTInfo.cpp
Change the displays to show the DG-ID instead of the TO field for YSF.
2020-08-09 19:23:18 +01:00
CASTInfo.h
Display and log the DG-ID in the Fusion mode.
2020-08-09 15:09:08 +01:00
Conf.cpp
Add optional log file rotation and UDP socket reopening.
2020-10-31 21:35:09 +00:00
Conf.h
Add optional log file rotation and UDP socket reopening.
2020-10-31 21:35:09 +00:00
CRC.cpp
Decode and encode the System Fusion FICH.
2016-02-23 19:30:35 +00:00
CRC.h
Decode and encode the System Fusion FICH.
2016-02-23 19:30:35 +00:00
Defines.h
Detect DV Fast Data on a per-frame basis
2020-11-29 16:12:58 -05:00
Display.cpp
Remove the location information from the new config message.
2020-08-27 10:13:02 +01:00
Display.h
Display and log the DG-ID in the Fusion mode.
2020-08-09 15:09:08 +01:00
DMRAccessControl.cpp
Cleanup the access control slightly.
2017-07-16 19:31:27 +01:00
DMRAccessControl.h
Add RSSI display for all modes.
2017-01-05 19:15:10 +00:00
DMRControl.cpp
use enum DMR_OVCM_TYPES
2019-11-17 10:57:58 +08:00
DMRControl.h
use enum DMR_OVCM_TYPES
2019-11-17 10:57:58 +08:00
DMRCSBK.cpp
Add decode for Call Alert and Call Alert Ack CSBKs.
2020-03-02 12:10:44 +00:00
DMRCSBK.h
Add correct copyright.
2020-04-03 17:09:17 +01:00
DMRData.cpp
Roll back the jitter buffer changes.
2018-02-08 20:25:03 +00:00
DMRData.h
Roll back the jitter buffer changes.
2018-02-08 20:25:03 +00:00
DMRDataHeader.cpp
Remove unused code.
2017-05-19 08:35:14 +01:00
DMRDataHeader.h
Remove unneeded code.
2017-05-15 22:12:39 +01:00
DMRDefines.h
Change of the DMR Silence Data for AMBE+2 silence pattern
2018-02-09 14:57:09 -03:00
DMREMB.cpp
change variable type to unsigned char
2019-12-07 23:25:57 +08:00
DMREMB.h
Renamed DMR protocol files.
2016-02-15 18:45:57 +00:00
DMREmbeddedData.cpp
Fixing last byte of Embedded Data
2017-04-04 23:02:19 -03:00
DMREmbeddedData.h
Upgrade the Embedded Data regeneration.
2017-01-10 19:27:12 +00:00
DMRFullLC.cpp
Finally fix the (re)generation of Full LC PDUs.
2016-02-22 22:27:03 +00:00
DMRFullLC.h
Renamed DMR protocol files.
2016-02-15 18:45:57 +00:00
DMRIds.dat
Update the DMR Ids.
2019-11-07 13:53:57 +00:00
DMRLC.cpp
Don't remove OVCM bit. Only set it when configured.
2019-11-23 11:11:53 +01:00
DMRLC.h
Add OVCM support.
2019-10-11 18:24:25 +01:00
DMRLookup.cpp
cosme
2020-03-10 05:26:45 +09:00
DMRLookup.h
use UserDBentry from findWithName() to writeDMR(), add writeDMREx()
2020-03-08 08:06:27 +09:00
DMRNetwork.cpp
Add ID for SkyBridge HS board
2020-11-08 18:46:19 -03:00
DMRNetwork.h
Clean ups for IPv6.
2020-09-06 12:54:08 +01:00
DMRplus_startup_options.md
how to work with the Options-settings
2016-11-11 22:05:26 +01:00
DMRShortLC.cpp
Add more asserts to catch bugs.
2016-03-07 20:21:55 +00:00
DMRShortLC.h
Renamed DMR protocol files.
2016-02-15 18:45:57 +00:00
DMRSlot.cpp
use UserDBentry from findWithName() to writeDMR(), add writeDMREx()
2020-03-08 08:06:27 +09:00
DMRSlot.h
use enum DMR_OVCM_TYPES
2019-11-17 10:57:58 +08:00
DMRSlotType.cpp
Renamed DMR protocol files.
2016-02-15 18:45:57 +00:00
DMRSlotType.h
Renamed DMR protocol files.
2016-02-15 18:45:57 +00:00
DMRTA.cpp
Remove warning
2020-03-30 20:30:43 +02:00
DMRTA.h
Fixed incorrect DMRTA header packet length from RF side
2018-12-09 23:49:15 +08:00
DMRTrellis.cpp
Improve the FEC reconstruction a little.
2016-07-19 17:24:11 +01:00
DMRTrellis.h
Improve the FEC reconstruction a little.
2016-07-19 17:24:11 +01:00
Dockerfile
Remove Log repertory
2018-01-04 01:09:37 +01:00
DStarControl.cpp
Detect DV Fast Data on a per-frame basis
2020-11-29 16:12:58 -05:00
DStarControl.h
Detect DV Fast Data on a per-frame basis
2020-11-29 16:12:58 -05:00
DStarDefines.h
Detect DV Fast Data on a per-frame basis
2020-11-29 16:12:58 -05:00
DStarHeader.cpp
Remobe AMBE regeneration on data packets.
2016-10-05 07:42:41 +01:00
DStarHeader.h
Remobe AMBE regeneration on data packets.
2016-10-05 07:42:41 +01:00
DStarNetwork.cpp
Clean ups for IPv6.
2020-09-06 12:54:08 +01:00
DStarNetwork.h
Clean ups for IPv6.
2020-09-06 12:54:08 +01:00
DStarSlowData.cpp
Fix the CCITT16 checksums for CSBK, DMR Data and D-Star Headers.
2016-02-18 21:56:26 +00:00
DStarSlowData.h
Add the status ack to D-Star.
2016-02-01 20:49:52 +00:00
Golay2087.cpp
Initial commit
2016-01-14 18:45:04 +00:00
Golay2087.h
Initial commit
2016-01-14 18:45:04 +00:00
Golay24128.cpp
The beginnings of simple System Fusion support.
2016-02-04 19:17:39 +00:00
Golay24128.h
The beginnings of simple System Fusion support.
2016-02-04 19:17:39 +00:00
Hamming.cpp
More work with decoding and regenerating P25.
2016-09-13 18:27:50 +01:00
Hamming.h
More work with decoding and regenerating P25.
2016-09-13 18:27:50 +01:00
HD44780.cpp
Change the displays to show the DG-ID instead of the TO field for YSF.
2020-08-09 19:23:18 +01:00
HD44780.h
Display and log the DG-ID in the Fusion mode.
2020-08-09 15:09:08 +01:00
HD44780.layouts
D-Star: Redesign HD44780 layouts
2016-09-29 19:47:41 +01:00
I2CController.cpp
I2C support is only Linux.
2019-03-13 20:30:49 +09:00
I2CController.h
Clean up the code for Windows and style.
2018-07-30 18:19:46 +01:00
ISSUES.txt
Update a bit of documentation.
2018-01-17 19:06:37 +00:00
LCDproc.cpp
Fix Windows compilation.
2020-09-20 14:07:42 +01:00
LCDproc.h
Display and log the DG-ID in the Fusion mode.
2020-08-09 15:09:08 +01:00
LICENCE
Initial commit
2016-01-14 18:45:04 +00:00
Log.cpp
Add optional log file rotation and UDP socket reopening.
2020-10-31 21:35:09 +00:00
Log.h
Add optional log file rotation and UDP socket reopening.
2020-10-31 21:35:09 +00:00
Makefile
Merge branch 'ipv6' into SimpleDMR
2020-09-06 11:57:11 +01:00
Makefile.Pi
Make all of the other Makefiles use the system default compilers.
2020-09-06 14:29:29 +01:00
Makefile.Pi.Adafruit
Make all of the other Makefiles use the system default compilers.
2020-09-06 14:29:29 +01:00
Makefile.Pi.HD44780
Make all of the other Makefiles use the system default compilers.
2020-09-06 14:29:29 +01:00
Makefile.Pi.OLED
Merge branch 'master' into SimpleDMR
2020-10-05 12:48:57 +01:00
Makefile.Pi.PCF8574
Make all of the other Makefiles use the system default compilers.
2020-09-06 14:29:29 +01:00
MMDVM.ini
Update MMDVM.ini
2020-11-06 10:52:34 +00:00
MMDVMHost.cpp
Detect DV Fast Data on a per-frame basis
2020-11-29 16:12:58 -05:00
MMDVMHost.h
Simplify the Host to DMR Gateway protocol.
2020-08-26 09:29:11 +01:00
MMDVMHost.sln
Add VS2017 files for Remote Command.
2019-01-19 17:27:41 +00:00
MMDVMHost.vcxproj
Use normal logging for UDPSocket.
2020-09-22 15:51:10 +01:00
MMDVMHost.vcxproj.filters
Remove the unused SHA256 functions.
2020-08-27 09:00:49 +01:00
Modem.cpp
Add ID for SkyBridge HS board
2020-11-08 18:46:19 -03:00
Modem.h
Change the displays to show the DG-ID instead of the TO field for YSF.
2020-08-09 19:23:18 +01:00
ModemSerialPort.cpp
Allow the modem to host a serial display.
2016-10-06 18:38:16 +01:00
ModemSerialPort.h
Allow the modem to host a serial display.
2016-10-06 18:38:16 +01:00
Mutex.cpp
Add the Mutex class.
2016-10-06 20:06:57 +01:00
Mutex.h
Add the Mutex class.
2016-10-06 20:06:57 +01:00
NetworkInfo.cpp
Fix osx compile error
2020-10-31 19:53:00 +08:00
NetworkInfo.h
Reformat code and make small alterations.
2017-11-15 10:47:56 +00:00
Nextion.cpp
Remove the location information from the new config message.
2020-08-27 10:13:02 +01:00
Nextion.h
Remove the location information from the new config message.
2020-08-27 10:13:02 +01:00
NullDisplay.cpp
Display and log the DG-ID in the Fusion mode.
2020-08-09 15:09:08 +01:00
NullDisplay.h
Display and log the DG-ID in the Fusion mode.
2020-08-09 15:09:08 +01:00
NullModem.cpp
Add UseCOSAsLockout and FM Access Mode parameters.
2020-07-13 16:02:04 +01:00
NullModem.h
Add UseCOSAsLockout and FM Access Mode parameters.
2020-07-13 16:02:04 +01:00
NXDN.csv
Update the NXDN IDs file from radioid.net.
2019-11-07 14:02:40 +00:00
NXDNAudio.cpp
Simplify the NXDN audio decoding.
2018-03-07 20:24:32 +00:00
NXDNAudio.h
Start on the NXDN Icom network audio handling.
2018-02-19 19:09:01 +00:00
NXDNControl.cpp
More work on integrating the Kenwood NXDN protocol.
2020-05-27 12:07:21 +01:00
NXDNControl.h
More work on integrating the Kenwood NXDN protocol.
2020-05-27 12:07:21 +01:00
NXDNConvolution.cpp
Fix file attributes for source files.
2018-06-13 18:55:03 +01:00
NXDNConvolution.h
Add more NXDN support files.
2018-01-17 21:21:25 +00:00
NXDNCRC.cpp
Revert "Rework the LICH parity."
2018-03-20 20:36:23 +00:00
NXDNCRC.h
Revert "Rework the LICH parity."
2018-03-20 20:36:23 +00:00
NXDNDefines.h
Allow more control over NXDN networking.
2018-03-12 20:55:53 +00:00
NXDNFACCH1.cpp
Add raw data accessors to the channel data classes.
2018-02-21 07:48:24 +00:00
NXDNFACCH1.h
Add raw data accessors to the channel data classes.
2018-02-21 07:48:24 +00:00
NXDNIcomNetwork.cpp
Clean ups for IPv6.
2020-09-06 12:54:08 +01:00
NXDNIcomNetwork.h
Clean ups for IPv6.
2020-09-06 12:54:08 +01:00
NXDNKenwoodNetwork.cpp
Clean ups for IPv6.
2020-09-06 12:54:08 +01:00
NXDNKenwoodNetwork.h
Clean ups for IPv6.
2020-09-06 12:54:08 +01:00
NXDNLayer3.cpp
Add correct LICH direction to match Icom repeaters.
2018-05-23 18:30:40 +01:00
NXDNLayer3.h
Begin handling Icom format network frames. Work in progress.
2018-02-15 20:20:07 +00:00
NXDNLICH.cpp
Simplify the LICH processing.
2018-03-21 18:44:33 +00:00
NXDNLICH.h
Simplify the LICH processing.
2018-03-21 18:44:33 +00:00
NXDNLookup.cpp
NXDNLookup now use UserDB
2020-03-09 22:23:55 +09:00
NXDNLookup.h
NXDNLookup now use UserDB
2020-03-09 22:23:55 +09:00
NXDNNetwork.cpp
Start adding the Kenwood protocol as an option.
2020-05-27 11:38:46 +01:00
NXDNNetwork.h
Start adding the Kenwood protocol as an option.
2020-05-27 11:38:46 +01:00
NXDNSACCH.cpp
Fix file attributes for source files.
2018-06-13 18:55:03 +01:00
NXDNSACCH.h
Add raw data accessors to the channel data classes.
2018-02-21 07:48:24 +00:00
NXDNUDCH.cpp
Insert the correct bytes for data transmissions in the Icom protocol.
2018-05-17 19:23:01 +01:00
NXDNUDCH.h
Add raw data accessors to the channel data classes.
2018-02-21 07:48:24 +00:00
OLED.cpp
fix scroll direction
2020-09-25 19:02:36 +08:00
OLED.h
add UserDB display for OLED
2020-09-24 18:58:10 +08:00
OLED.md
Update OLED.md
2019-12-04 15:07:54 +01:00
P25Audio.cpp
Fix obvious mistake in P25 network audio.
2016-10-03 19:28:01 +01:00
P25Audio.h
Add the IMBE packing/unpacking code.
2016-09-21 07:04:12 +01:00
P25Control.cpp
Add P25 end of transmission data.
2019-09-29 16:34:56 +01:00
P25Control.h
Reset the mode's state machines when going to the disabled state.
2019-01-19 17:15:24 +00:00
P25Data.cpp
Revert "Merge pull request #462 from gatekeep/master"
2018-11-12 09:48:00 +00:00
P25Data.h
Revert "Merge pull request #462 from gatekeep/master"
2018-11-12 09:48:00 +00:00
P25Defines.h
Revert "Merge pull request #462 from gatekeep/master"
2018-11-12 09:48:00 +00:00
P25LowSpeedData.cpp
Adding missing P25 FEC table entry to avoid buffer overflow.
2019-09-03 15:22:35 -04:00
P25LowSpeedData.h
Finish off the basics of the P25 network handling.
2016-09-22 19:39:19 +01:00
P25Network.cpp
Clean ups for IPv6.
2020-09-06 12:54:08 +01:00
P25Network.h
Clean ups for IPv6.
2020-09-06 12:54:08 +01:00
P25NID.cpp
Fix other crashes
2018-08-20 00:47:45 -03:00
P25NID.h
Oops! Forgot the P25 NID changes for the TSDU datatype.
2018-05-14 12:00:06 -04:00
P25Trellis.cpp
Fix P25 data reception, regeneration, and transmission.
2018-01-16 23:26:05 +00:00
P25Trellis.h
Progress on P25 data.
2018-01-04 21:17:34 +00:00
P25Utils.cpp
Fix the P25 PDU transmit length.
2018-01-17 07:59:40 +00:00
P25Utils.h
Fix the P25 PDU transmit length.
2018-01-17 07:59:40 +00:00
POCSAGControl.cpp
Fix silly bug.
2019-01-23 08:50:22 +00:00
POCSAGControl.h
Restructure POCSAG code to allow for two input data streams.
2019-01-23 08:21:47 +00:00
POCSAGDefines.h
Add POCSAG processing and display code.
2018-06-11 21:30:49 +01:00
POCSAGNetwork.cpp
Clean ups for IPv6.
2020-09-06 12:54:08 +01:00
POCSAGNetwork.h
Clean ups for IPv6.
2020-09-06 12:54:08 +01:00
prebuild.cmd
Fixed typo in generated header file and tested more
2017-03-10 03:32:00 +00:00
QR1676.cpp
Initial commit
2016-01-14 18:45:04 +00:00
QR1676.h
Initial commit
2016-01-14 18:45:04 +00:00
README.daemon
Added reference to full path for DMRIds.dat
2016-05-05 10:52:58 +01:00
README.HD44780
Fix README.HD44780 Backlight Power Supply
2016-12-26 00:51:30 +01:00
README.md
Update README.md
2020-11-24 09:27:01 +00:00
RemoteCommand.cpp
Add optional log file rotation and UDP socket reopening.
2020-10-31 21:35:09 +00:00
RemoteCommand.h
Add example remote command program.
2019-01-07 13:23:11 +00:00
RemoteCommand.vcxproj
Update files to VS2019.
2020-02-14 20:53:21 +00:00
RemoteCommand.vcxproj.filters
Add VS2017 files for Remote Command.
2019-01-19 17:27:41 +00:00
RemoteControl.cpp
Merge remote-tracking branch 'origin' into ipv6
2020-06-12 20:24:17 +09:00
RemoteControl.h
Merge remote-tracking branch 'origin' into ipv6
2020-06-12 20:24:17 +09:00
RingBuffer.h
Attempt to recover from ring buffer overflows (#141)
2016-09-23 14:48:44 +01:00
RS129.cpp
Initial commit
2016-01-14 18:45:04 +00:00
RS129.h
Initial commit
2016-01-14 18:45:04 +00:00
RS241213.cpp
Revert "Merge pull request #462 from gatekeep/master"
2018-11-12 09:48:00 +00:00
RS241213.h
Revert "Merge pull request #462 from gatekeep/master"
2018-11-12 09:48:00 +00:00
RSSI.dat
Use a linear interpolator for the reported RSSI values.
2016-12-21 19:58:46 +00:00
RSSIInterpolator.cpp
Type correction.
2016-12-22 10:29:39 +00:00
RSSIInterpolator.h
Use a linear interpolator for the reported RSSI values.
2016-12-21 19:58:46 +00:00
SerialController.cpp
Simplify termios setting for serial port
2020-03-25 14:32:27 +09:00
SerialController.h
Extract I2C logic from SerialController to separate class
2018-07-30 21:58:35 +08:00
SerialPort.cpp
Allow the modem to host a serial display.
2016-10-06 18:38:16 +01:00
SerialPort.h
Allow the modem to host a serial display.
2016-10-06 18:38:16 +01:00
StopWatch.cpp
Simplify the new stopwatch code.
2018-07-15 20:33:14 +01:00
StopWatch.h
Simplify the new stopwatch code.
2018-07-15 20:33:14 +01:00
Sync.cpp
More superficial NXDN work.
2018-01-11 20:59:32 +00:00
Sync.h
More superficial NXDN work.
2018-01-11 20:59:32 +00:00
TFTSerial.cpp
Change the displays to show the DG-ID instead of the TO field for YSF.
2020-08-09 19:23:18 +01:00
TFTSerial.h
Display and log the DG-ID in the Fusion mode.
2020-08-09 15:09:08 +01:00
TFTSurenoo.cpp
Change the displays to show the DG-ID instead of the TO field for YSF.
2020-08-09 19:23:18 +01:00
TFTSurenoo.h
Display and log the DG-ID in the Fusion mode.
2020-08-09 15:09:08 +01:00
Thread.cpp
NetBSD and other changes.
2020-10-05 12:46:54 +01:00
Thread.h
Fix Linux threading compile issues.
2016-06-06 19:26:47 +01:00
Timer.cpp
Initial commit
2016-01-14 18:45:04 +00:00
Timer.h
Initial commit
2016-01-14 18:45:04 +00:00
UDPSocket.cpp
Fix missing Log.h handling in UDPSocket.cpp
2020-10-31 22:08:38 +00:00
UDPSocket.h
Fix Windows execution.
2020-09-20 21:31:32 +01:00
UMP.cpp
Add CD LED functionality to MMDVMHost
2016-11-17 11:48:42 +01:00
UMP.h
Add CD LED functionality to MMDVMHost
2016-11-17 11:48:42 +01:00
UserDB.cpp
Beginnings of FM support.
2020-04-09 22:02:47 +01:00
UserDB.h
add user database storage
2020-03-05 06:35:14 +09:00
UserDBentry.cpp
get() goes const, add clear()
2020-03-08 07:55:08 +09:00
UserDBentry.h
get() goes const, add clear()
2020-03-08 07:55:08 +09:00
Utils.cpp
Revert "First attempt at detecting D-Star data frames, Kenwood and Icom."
2020-11-27 18:01:02 -05:00
Utils.h
Revert "First attempt at detecting D-Star data frames, Kenwood and Icom."
2020-11-27 18:01:02 -05:00
Version.h
Add optional log file rotation and UDP socket reopening.
2020-10-31 21:35:09 +00:00
YSFControl.cpp
Fix bug added in FICH regeneration.
2020-10-13 10:11:13 +01:00
YSFControl.h
Display and log the DG-ID in the Fusion mode.
2020-08-09 15:09:08 +01:00
YSFConvolution.cpp
Change M to improve the decoding.
2016-04-21 11:17:20 +01:00
YSFConvolution.h
Add more NXDN support files.
2018-01-17 21:21:25 +00:00
YSFDefines.h
Fix remote gateway for DR-1X
2018-10-23 21:59:10 -03:00
YSFFICH.cpp
Regenerate the FICH correctly.
2020-10-13 10:07:31 +01:00
YSFFICH.h
Regenerate the FICH correctly.
2020-10-13 10:07:31 +01:00
YSFNetwork.cpp
Merge branch 'master' into SimpleDMR
2020-09-08 10:11:15 +01:00
YSFNetwork.h
Clean ups for IPv6.
2020-09-06 12:54:08 +01:00
YSFPayload.cpp
Reduce the amount of YSF debug logging.
2020-09-24 13:53:17 +01:00
YSFPayload.h
Regenerate the odd VW mode message after the header.
2020-09-24 13:47:31 +01:00

README.md

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 the other. It supports D-Star, DMR, P25 Phase 1, NXDN, System Fusion, POCSAG, and FM on the MMDVM, and D-Star, DMR, and System Fusion on the DVMega.

On the D-Star side the MMDVMHost interfaces with the ircDDB Gateway, on DMR it connects to the DMR Gateway to allow for connection to multiple DMR networks, on System Fusion it connects to the YSF Gateway to allow 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 NXCore talk groups. It uses the DAPNET Gateway to access DAPNET to receive 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:

  • 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)
  • Nextion TFTs (all sizes, both Basic and Enhanced versions)
  • OLED 128x64 (SSD1306)
  • LCDproc

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 output of the MMDVM modem (Arduino Due, STM32, Teensy), or to the UART output on the UMP.

The HD44780 displays are integrated with wiringPi for Raspberry Pi based platforms.

The OLED display needs an extra library see OLED.md

The LCDproc support enables the use of a multitude of other LCD screens. See the supported devices page on the LCDproc website for more info.

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.

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