[msom] Add GNSS test FQC command

[scott-brust]

Problem

Msom hardware supports a built in GNSS engine along with the cellular modem. The mfg-cli needs to be updated to test this GNSS functionality as part of FQC testing at the factory. A new tinker:gnss-test command has been added to enable testing of both M404 (Quectel BG95-M5 modem/GNSS) and M524(Quectel EG91 modem/GNSS) hardware.

Solution

Add support for the new particlemfg tinker:gnss-test command

Steps to Test

Use mfg-cli to test per instructions here

Example App

Use tinker

References

See CLI PR here
See slack here

[YutingYou]

LGTM, also verified on M524(EG91-EX) and M404(BG95-M5)

$ npm run-script mfg-cli:start tinker:gnss-test start

> cli-monorepo@1.0.0 mfg-cli:start /Users/yuting/projects/js_prj/particle-cli
> ./packages/mfg-cli/bin/run "tinker:gnss-test" "start"

{
    "pass": true
}

$ ./packages/mfg-cli/bin/run tinker:gnss-test status
{
    "pass": true,
    "message": "Found 1 satellites"
}

[eberseth]

This loop is used elsewhere as well. It would be handy to have a macro/template that wraps retry loops with delay. Don't worry about it today.

[eberseth]

The AT+QGPSCFG="priority" command should take a maximum of 300ms to execute. I see you don't have a timeout on the command call.

[scott-brust]

Right, I just use the default 10 second timeout. I dont care about timing just that it succeeded.

[eberseth]

Spelling

[eberseth]

There are two constellations reported in the GSV sentences. This method may take the last set only, which is GLONASS.

[scott-brust]

Yes, this just lazily finds the last GSV sentence satellite count. I didnt do any more parsing since its not clear what data (if any) we care about returning to the host.

If we can see any number of satellites, then I consider gnss working and return success.
If we want this test to do more, then we need to specify that and I can improve it.

[eberseth]

You may want to target the constellation that would be provided by the GNSS simulator during manufacturing

[scott-brust]

Eugene posted an example simulator that reported GPS, but we dont know for sure what the factory will end up using. This will work with any constellation.

If we care about detecting/parsing each individual constellation I can do that, but we should make sure this will be used somewhere.