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eg25-gps-init: document the SIM requirement

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Colin 2023-08-21 19:39:55 +00:00
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6
hosts/by-name/moby/eg25_gps_init.py
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@ -8,7 +8,13 @@
# this script downloads assisted GPS (AGPS) data via the system's default gateway (i.e. WiFi)
# and shares that with the modem. this quickens the process of acquiring a GPS fix.
#
# PREREQUISITES/DEPENDENCIES:
# this script expects to run on megi's kernel, with `CONFIG_MODEM_POWER=y`.
# ModemManager, and by extension this script, REQUIRE A SIM CARD IN YOUR PHONE.
# the sim doesn't need to be "activated". you can buy a $1 SIM and never purchase
# service and that works; it's just needed for ModemManager to boot the modem.
# this isn't a fundamental requirement; if one did everything via serial instead of
# ModemManager the SIM would not be necessary for GPS.
#
# EXPECTATIONS/TIPS:
# - with the right environment, you may get a GPS fix in < 30s.