samples: cellular: location: Disable use of eDRX

The sample used to have both PSM and eDRX enabled. This causes
bad behavior in some networks, so it is better to disable eDRX
and use only PSM, which suits the use case better.

Signed-off-by: Tommi Kangas <[email protected]>

Author: tokangas

samples/cellular/location/prj.conf

@@ -31,9 +31,10 @@ CONFIG_NET_SOCKETS_OFFLOAD=y
 
 # LTE link control
 CONFIG_LTE_LINK_CONTROL=y
-CONFIG_LTE_LC_EDRX_MODULE=y
-CONFIG_LTE_EDRX_REQ=y
 CONFIG_LTE_LC_PSM_MODULE=y
+CONFIG_LTE_PSM_REQ=y
+# Request periodic TAU of 8 hours
+CONFIG_LTE_PSM_REQ_RPTAU="00101000"
 # Request PSM active time of 8 seconds.
 CONFIG_LTE_PSM_REQ_RAT="00000100"
 

samples/cellular/location/src/main.c

@@ -258,8 +258,6 @@ int main(void)
 
 	lte_lc_register_handler(lte_event_handler);
 
-	/* Enable PSM. */
-	lte_lc_psm_req(true);
 	lte_lc_connect();
 
 	k_sem_take(&lte_connected, K_FOREVER);