samples: cellular: gnss: 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/gnss/prj.conf

@@ -20,11 +20,9 @@ CONFIG_GNSS_SAMPLE_ASSISTANCE_NRF_CLOUD=n
 
 # LTE Link Control
 CONFIG_LTE_LINK_CONTROL=y
-# Request eDRX from the network
-CONFIG_LTE_LC_EDRX_MODULE=y
-CONFIG_LTE_EDRX_REQ=y
-# PSM requested periodic TAU 8 hours
 CONFIG_LTE_LC_PSM_MODULE=y
+CONFIG_LTE_PSM_REQ=y
+# PSM requested periodic TAU 8 hours
 CONFIG_LTE_PSM_REQ_RPTAU="00101000"
 # PSM requested active time 6 seconds
 CONFIG_LTE_PSM_REQ_RAT="00000011"

samples/cellular/gnss/src/main.c

@@ -452,8 +452,6 @@ static int modem_init(void)
 #if defined(CONFIG_GNSS_SAMPLE_LTE_ON_DEMAND)
 	lte_lc_register_handler(lte_lc_event_handler);
 #elif !defined(CONFIG_GNSS_SAMPLE_ASSISTANCE_NONE)
-	lte_lc_psm_req(true);
-
 	LOG_INF("Connecting to LTE network");
 
 	if (lte_lc_connect() != 0) {