- Hello,
My nRF9160 hard faults (i think?) when issuing a command to the modem, specifically this line:
query_modem("AT+CGSN", imei_buf, sizeof(imei_buf));
which then calls ncs function:
/** * @brief Send a formatted AT command to the modem * and receive the response into the supplied buffer. * * @param buf Buffer to receive the response into. * @param len Buffer length. * @param fmt Command format. * @param ... Format arguments. * * @retval 0 On "OK" responses. * @returns A positive value On "ERROR", "+CME ERROR", and "+CMS ERROR" responses. * The type of error can be distinguished using @c nrf_modem_at_err_type. * The error value can be retrieved using @c nrf_modem_at_err. * @retval -NRF_EPERM The Modem library is not initialized. * @retval -NRF_EFAULT @c buf or @c fmt are @c NULL. * @retval -NRF_ENOMEM Not enough shared memory for this request. * @retval -NRF_E2BIG The response is larger than the supplied buffer @c buf. * @retval -NRF_EINVAL If @c len is zero. */ int nrf_modem_at_cmd(void *buf, size_t len, const char *fmt, ...);
This leads to I think is a hard fault and the board resets, the modem never returns any values, so I can't see what is happening.
NCS 1.9.1
mfw 1.3.2
What might cause this?
How can I debug this?
Thank you
