when I add a line below to mqtt_simple program, it causes error. How to fix this?
CONFIG_LTE_LOCK_BANDS=y
*** Booting Zephyr OS build v2.3.0-rc1-ncs1 *** The MQTT simple sample started LTE Link Connecting ... LTE Link Connected! ERROR: getaddrinfo failed -11 ERROR: mqtt_connect -47
It seems that at_cmd_write in lte_lc.c gives an error -5
<lte_lc.c>
#if defined(CONFIG_LTE_LOCK_BANDS)
/* Set LTE band lock (volatile setting).
* Has to be done every time before activating the modem.
*/
if (at_cmd_write(lock_bands, NULL, 0, NULL) != 0) {
return -EIO;
}
#endif
