gps and lte work simultaneously

[tracking]

Hi!

I am trying use aws iot sample and over this the gps example to obtain location and transmit a aws iot core, but I have problem with manage of lte and gps functions, 

I found this functions to control lte modem

lte_lc_init_and_connect_async(lte_lc_evt_handler_thandler);//only once
//
lte_lc_connect_async(lte_lc_evt_handler_thandler);//
//
lte_lc_edrx_req(bool enable);

I undertand that line 1 initialize and connect the lte modem, then 

I don't understand the difference between line 3 and line 5 and therfore how to use that functions

how to use psm to achieve gps and lte work tougether?

which are the functions to control gps work?

thanks in advance 

Julio

[Albrecht Markus Schellenberger]

Hello Julio,

Yes, since you have configured your modem with the option CONFIG_LTE_NETWORK_MODE_LTE_M_GPS=y, you can run GPS with the modem configuration of the AWS IoT sample.

To make your GPS functionality run as smoothly as possible, it is important that you use the GPS stack “long enough”. You can achieve that by putting the LTE stack to idle using PSM/eDRX.

Regards,

Markus