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GPS/Data Application

This repository contains everything needed to decode DMR GPS packets and SMS for HBLink3. This application can act as a master or peer and receive data as a group call or private call. It is designed to work in a multi system/user network.

Files modified from original master branch of HBLink3:

bridge.py
config.py

Required modules

pynmea2
aprslib
maidenhead

Optional Modules

Flask - Required for dashboard
smtplib - Required for sending email. If pip fails to install module, it may already be installed as most Linux distrobutions have this module by default.
slixmpp - Required for upcoming XMPP gateway.

This should work for DMR radios that send location data as a UTF-8 NMEA sentence. I am hopping to add support for more radios in the future.

Differences in branches

GPS: Contains the GPS/Data Application.
aprs_features: Contains the GPS/Data Application and a modified version of the APRS implementation for repeaters and hotspots by IU7IGU. (See https://github.com/iu7igu/hblink3-aprs for his work). I combined these for convenience.

Confirmed working:

Actually tested

Radio	GPS	SMS
Anytone D878	YES	YES
Anytone D578	YES	YES
BTech DMR-6x2	YES	Most likely
MD-380 (MD380tools, no GPS)	-	YES
MD-380 (stock firmware, GPS)	YES	Most likely
MD-390 (stock firmware)	YES	YES
Retevis RT73*	YES	YES
Ailunce HD1	YES	YES

*RT73 must have unconfirmed data setting enabled.

Highly suspected to work:

Not tested yet, but will most likely work.

Radio	GPS	SMS
Anytone D868	Most likely	Most likely
TYT MD-2017	Most likely	Likely
TYT MD-9600	Most likely	Likely
Retevis RT8	Most likely	Likely

Tested, but with issues.

Tested, but with bugs present.

Radio	GPS	SMS
Alinco DJ-MD5TGP	WIP	Most likely
Motorola DP3601	WIP	WIP

Would like to test:

Connect Systems GPS enabled radios

Features

Decode GPS locations and upload APRS position packets
Each user/DMR ID can customize APRS position
Ability to receive data as a private call or group call
Trigger a command or script via DMR SMS
Optional web dashboard to show APRS packets uploaded
Display bulletins sent via SMS on web dashboard

How it works

A user should configure their radio for the DMR ID of the application and private or group call. When a position is received by the application, it will extract the coordinates and create an APRS position packet. The application will find the callsign of the user based on the sending radio's DMR ID. It is essential to have an up to date subscriber_ids file for this to work. A predefined APRS SSID is appended to the callsign. The APRS location packet is then uploaded to APRS-IS. No setup is required beforehand on the part of the user. This is pretty much "plug and play."

For example, N0CALL has a DMR ID of 1234567. N0CALL's radio sends a position to the application. The application will query the subscriber_ids file for DMR ID 1234567. The result will be N0CALL. An APRS location pack is created and uploaded to APRS-IS.

Individual user/DMR ID APRS settings

By default, all APRS positions will have an SSID of 15, a default comment, and the callsign of the DMR user. These default settings can be changed.

The comment, SSID, and icon can be set for each individual user/DMR ID the application sees. The application stores all the setting in a file. You may have different SSIDs, icons, and comments for different DMR IDs. This is done via DMR SMS using the following commands:

Command	Description	Example
@SSID	Change SSID of user callsign.	`@SSID 7`
@ICON	Change the icon of the APRS position. *See http://aprs.net/vm/DOS/SYMBOLS.HTM for icon list.	`@icon /p`
@COM	Change the comment of the APRS.	`@COM This is a test comment.`
@MH	Set you location by maidenhead grid square. Designed for radios with no GPS or that are not compatable yet.	`@MH DN97uk`
@BB	Post a bulliten to the web dashboard.	`@BB This is a test bulletin.`
@[CALLSIGN W/ SSID] A-[MESSAGE]	Send a message to another station via APRS.	`@N0CALL-15 A-This is a test.`
[EMAIL ADDRESS] E-[MESSAGE]	Send an email to an email address.	`test@example.org E-This is a test.`

Send a DMR SMS to the configured dmr_data_id in the application with the desired command followed by the value. For example, to change your icon to a dog, the command would be @ICON /p (see the icon table for values). Changing your SSID is as simple as @SSID 7, and @COM Testing 123 will change the comment.

Sending @BB Test will result in a post to the bulletin board with the messaage of "Test".

To remove any of the stored values, just send the appropriate command without any input. @COM will remove the stored comment, @ICON will remove the stored icon, and @COM will remove the strored comment. Any position now reports sent will have the default settings.

Web Dashboard

The web dashboard is completely optional. Python module flask is required for this to work. The web dashboard will display the last 15 positions of radios sent to APRS-IS. The dashboard will also sh user bulletin. A bulletin is a message sent via SMS that will display on the web dashboard. There are several uses for this, including: testing SMS functionality of radio, announcements, and moire. It is a novel feature. The page will automatically reload every 2 minutes. Setup is rather simple. Just modify the example config in the dashboard directory and rename it to dashboard_settings.py. Then start dashboard.py.

APRS messaging

At this time, only sending of messages from DMR SMS to APRS-IS is supported. I find this feature very pointless because it will only go one way, but someone else may find it important. Messages from sent from APRS-IS to DMR SMS will not work. I have not written the code for this yet. It will likley be a long time before this is a possibility.