what calls gps_trigger_handler in asset tracker example?

[austinaoe]

Can any one explain to me how the gps reads are triggered in the asset tracker example?  I see it triggered at about 0.5 Hz.

[Jan Tore Guggedal]

Hi,

The GPS simulator uses "data ready" events to trigger, and the application provides a trigger handler function that's called every time the trigger event occurs. You can see it be configured here:
https://github.com/NordicPlayground/fw-nrfconnect-nrf/blob/748375bd74e2e769ff8fedbd0f059674044cd46c/applications/asset_tracker/src/main.c#L1015

The interval between each of these trigger is configured by setting for example

CONFIG_GPS_SIM_TRIGGER_TIMER_MSEC=10000

in your prj.conf to trigger every 10 seconds.

Best regards,

Jan Tore

[Jan Tore Guggedal]

Hi,

The GPS simulator uses "data ready" events to trigger. You can see it be configured here:
https://github.com/NordicPlayground/fw-nrfconnect-nrf/blob/748375bd74e2e769ff8fedbd0f059674044cd46c/applications/asset_tracker/src/main.c#L1015

The interval between each of these trigger is configured by setting for example

CONFIG_GPS_SIM_TRIGGER_TIMER_MSEC=10000

in your prj.conf to trigger every 10 seconds.

Best regards,

Jan Tore

[austinaoe]

Thank you Jan, what is generating the "data ready" events and so on and so forth?  I'm trying to figure out the mechanism by which this all works.