Pinephone pmoS GPS

gps-nmea

# /etc/init.d/gps-nmea

#!/sbin/openrc-run

command=/usr/local/bin/gps-nmea.py
command_args=

command_background=true
pidfile="/run/${RC_SVCNAME}.pid"

output_logger='logger -p daemon.info -t gps-nmea.stdout'
error_logger='logger -p daemon.err -t gps-nmea.stderr'

depend() {
	need dbus
	need modemmanager
	use syslog
}

start_pre() {
	mkdir -p /var/lib/gps-nmea/
	(
		curl --fail --silent --show-error --location --output /var/lib/gps-nmea/agps-xtradata.bin.new 'https://xtrapath4.izatcloud.net/xtra3gr.bin' &&
		mv /var/lib/gps-nmea/agps-xtradata.bin.new /var/lib/gps-nmea/agps-xtradata.bin
	) || :
}

gps-nmea.py

# /usr/local/bin/gps-nmea.py

#!/usr/bin/python3

import gi
import pydbus
import time

MM_MODEM_LOCATION_SOURCE_AGPS_MSB = 1 << 6
MM_MODEM_LOCATION_SOURCE_GPS_NMEA = 1 << 2

def try_modem_added(object_path, interfaces):
	if 'org.freedesktop.ModemManager1.Modem.Location' in interfaces:
		while True:
			try:
				print(f"added modem {object_path}", flush=True)
				modem = bus.get('.ModemManager1', object_path)['org.freedesktop.ModemManager1.Modem.Location']
				modem.InjectAssistanceData(xtradata)
				modem.Setup(0, True)
				modem.Setup(MM_MODEM_LOCATION_SOURCE_AGPS_MSB | MM_MODEM_LOCATION_SOURCE_GPS_NMEA, True)
				print(f"set up modem {object_path}", flush=True)
				break
			except Exception as e:
				print(f"error with modem {object_path}: {e}", flush=True)
				time.sleep(1)

with open('/var/lib/gps-nmea/agps-xtradata.bin', 'rb') as f:
	xtradata = f.read()

bus = pydbus.SystemBus()
manager = bus.get('.ModemManager1')['org.freedesktop.DBus.ObjectManager']

manager.InterfacesAdded.connect(try_modem_added)

for object_path, interfaces in manager.GetManagedObjects().items():
	try_modem_added(object_path, interfaces)

loop = gi.repository.GLib.MainLoop()
loop.run()

gpsmonng

# /usr/local/bin/gpsmonng

#!/bin/bash

clear

while sleep 1; do
	printf -- '--- %s\n' "$(date)"
	mmcli -m any --location-get |
		awk '
			/\$GPGSV,/ {
				split($0, parts, ",");
				for (i = 5; i < length(parts); i += 4) {
					if (parts[i + 3] == "") {
						printf ("~prn:%s ele:%s azi:%s~\n", parts[i], parts[i + 1], parts[i + 2]);
					}
					else {
						printf ("[prn:%s ele:%s azi:%s snr:%s]\n", parts[i], parts[i + 1], parts[i + 2], parts[i + 3]);
					}
				}
			}
		'
done