nRF9160: nrf_modem_lib_init() is error returns

Question

I am currently working on a custom board with the nRF9160. The modem initialization function nrf_modem_lib_init() terminates with an error. The error log is as follows: [00:00:11.089,843] lte_lc: nrf_modem_at_printf failed, reported error: 65536 [00:00:11.090,301] lte_lc: Failed to configure PSM, err -14 This error does not occur on the evaluation board (nRF9160 DK). What's the cause? Environment: nRF Connect SDK v2.9.0 I put the code below after nrf_modem_lib_init() for debugging. int errAt; char rcvParam[100] = ""; errAt = nrf_modem_at_cmd(rcvParam, sizeof rcvParam, "AT%%HWVERSION"); LOG_INF("[AT%%HWVERSION] %d, %s", errAt, rcvParam); errAt = nrf_modem_at_cmd(rcvParam, sizeof rcvParam, "AT+CGSN"); LOG_INF("[AT+CGSN] %d, %s", errAt, rcvParam); errAt = nrf_modem_at_cmd(rcvParam, sizeof rcvParam, "AT+CPIN?"); LOG_INF("[AT+CPIN?] %d, %s", errAt, rcvParam); errAt = nrf_modem_at_cmd(rcvParam, sizeof rcvParam, "AT+CEREG?"); LOG_INF("[AT+CEREG?] %d, %s", errAt, rcvParam); errAt = nrf_modem_at_cmd(rcvParam, sizeof rcvParam, "AT+CFUN?"); LOG_INF("[AT+CFUN?] %d, %s", errAt, rcvParam); errAt = nrf_modem_at_printf("AT+CFUN=41"); LOG_INF("[AT+CFUN=41] %d", errAt); errAt = nrf_modem_at_cmd(rcvParam, sizeof rcvParam, "AT+CPIN?"); LOG_INF("[AT+CPIN?] %d, %s", errAt, rcvParam); errAt = nrf_modem_at_cmd(rcvParam, sizeof rcvParam, "AT+CFUN?"); LOG_INF("[AT+CFUN?] %d, %s", errAt, rcvParam); errAt = nrf_modem_at_cmd(rcvParam, sizeof rcvParam, "AT%%XICCID"); LOG_INF("[AT%%XICCID] %d, %s", errAt, rcvParam); The log looked like this: [00:00:12.211,090] main: [AT%HWVERSION] 0, %HWVERSION: nRF9160 SICA B1A [00:00:12.211,853] main: [AT+CGSN] 0, 359************ (Mask) [00:00:12.212,554] main: [AT+CPIN?] 65536, ERROR [00:00:12.213,226] main: [AT+CEREG?] 65536, ERROR [00:00:12.213,867] main: [AT+CFUN?] 65536, ERROR [00:00:17.229,522] main: [AT+CFUN=41] 65536 [00:00:24.840,270] main: [AT+CPIN?] 65536, ERROR [00:00:36.420,776] main: [AT+CFUN?] 65536, ERROR [00:00:38.885,772] main: [AT%XICCID] 65536, ERROR On the nRF9160 DK, the results are as follows: [00:00:10.392,669] main: [AT%HWVERSION] 0, %HWVERSION: nRF9160 SICA B1A [00:00:10.407,104] main: [AT+CGSN] 0, 351************ (Mask) [00:00:10.419,921] main: [AT+CPIN?] 65536, ERROR [00:00:10.432,006] main: [AT+CEREG?] 0, +CEREG: 0,4 [00:00:10.444,671] main: [AT+CFUN?] 0, +CFUN: 0 [00:00:18.268,676] main: [AT+CFUN=41] 0 [00:00:20.937,927] main: [AT+CPIN?] 0, +CPIN: READY [00:00:31.411,682] main: [AT+CFUN?] 0, +CFUN: 41 [00:00:34.368,713] main: [AT%XICCID] 0, %XICCID: 898***************** (Mask) How can I check the cause? Best Regards. Kato.

Elfving · Accepted Answer

Hi, 
 Looks like you might have the same issue as a few other customers we've seen here in the past. Could you try updating the modem firmware? 
 If that doesn't help, have you gotten a hardware review for this board from us before? Is it the same SIM that you are using in the DK? 
 Regards, 
 Elfving

Elfving · Answer

Hi again Kato, 
 So this is fixed in a newer version of nrfutil, which newer versions of nRF Connect for Desktop will use. So we will get an official fix for you in nRF Connect for Desktop in the future. For the timebeing, you'll either have to unfortunately work with this limitation, or force nRF Connect for Desktop to use v2.8.3 of nrfutil. The issue with this latter solution is that it has not been tested by us, so we can not guarantee anything. 
 In order to override the default nrfutil version used, you can use environment variables. Open nrf connect for desktop with the below env variables and all apps will default to that version. 
 export NRF_OVERRIDE_NRFUTIL_SETTINGS=true export NRF_OVERRIDE_VERSION_DEVICE=2.8.3 
 Regards, 
 Elfving

nRF9160: nrf_modem_lib_init() is error returns

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