Subject of the issue
Sporadically the GPS radio decides to stop fixing and starts returning the following error
{ "reason": "516", "type" : "CME" }
Your environment
AutoPi Telematics Unit Pi3
version: 2021.07.12
running without 4G sim card
Steps to reproduce
Tell us how to reproduce this issue.
Leave the unit powered on (with power_timer sleep events disabled/cleared)
Power cycling the unit sometimes fixes the issue, sometimes it does not. There are no clear/consistent ways to resolve this except to keep unplugging and then replugging the unit into the OBD port
Expected behaviour
the GPS should stay on and should lose fix as long as there are sats available
Actual behaviour
the GPS reports being on, but returns no satellites in fix stats and throws error described above
Output of power.status command
rpi:
uptime:
days: 0
seconds: 25705
since_iso: '2021-07-22T13:10:30.211815'
since_t: 1626959430
time: '7:8'
users: 1
spm:
current_state: 'on'
last_state:
down: none
up: 'on'
last_trigger:
down: none
up: spm
sleep_interval: 0
version: '2.2'
stn:
battery:
level: 100
state: charging
voltage: 13.7
last_trigger:
sleep: NONE
wake: NONE
trigger_config:
ext_sleep: ' LOW FOR 3000 ms'
ext_wake: ' HIGH FOR 500 ms'
uart_sleep: ' 900 s'
vchg_wake: ' +0.50V IN 1000 ms'
vl_sleep: ' <12.20V FOR 240 s'
vl_wake: ' >13.20V FOR 3 s'
Do’s & dont’s
- Do not write your unit-id anywhere.