25 lines
830 B
Nix
25 lines
830 B
Nix
# pinephone GPS happens in EG25 modem
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# serial control interface to modem is /dev/ttyUSB2
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# after enabling GPS, readout is /dev/ttyUSB1
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#
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# minimal process to enable modem and GPS:
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# - `echo 1 > /sys/class/modem-power/modem-power/device/powered`
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# - `screen /dev/ttyUSB2 115200`
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# - `AT+QGPSCFG="nmeasrc",1`
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# - `AT+QGPS=1`
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#
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# now, something like `gpsd` can directly read from /dev/ttyUSB1.
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#
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# initial GPS fix can take 15+ minutes.
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# meanwhile, services like eg25-manager can speed this up by uploading assisted GPS data to the modem.
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#
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# geoclue somehow fits in here as a geospatial provider that leverages GPS and also other sources like radio towers
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{ ... }:
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{
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services.gpsd.enable = true;
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services.gpsd.devices = [ "/dev/ttyUSB1" ];
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# TODO: enable eg25-manager, and bring online both the modem and GPS on boot
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}
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