I've made this following code with inspiration from the at_monitor example to test a custom board using the nrf9160 sip.
int init()
{
int err;
// Initialize the modem
printk("AT Monitor sample started\n");
err = nrf_modem_lib_init();
if (err) {
printk("Modem library initialization failed, error: %d\n", err);
}
// Get modem firmware version
err = nrf_modem_at_cmd(response, sizeof(response), "AT+CGMR");
if (err) {
printk("Failed to read AT+CGMR, err %d\n", err);
}
printk("AT+CGMR:\n%s", response);
// Subscribe to notifications
printk("Subscribing to notifications\n");
err = nrf_modem_at_printf("AT+CEREG=1");
if (err) {
printk("AT+CEREG failed: %d\n", nrf_modem_at_err_type(err));
}
// Get signal quality
err = nrf_modem_at_printf("AT%%CESQ=1");
if (err) {
printk("AT+CESQ failed: %d\n", nrf_modem_at_err_type(err));
}
// Set modem in normal mode
printk("Connecting to network\n");
err = nrf_modem_at_printf("AT+CFUN=1");
if (err) {
printk("AT+CFUN failed\n");
}
// Test if modem is in normal mode
err = nrf_modem_at_printf("AT+CFUN?");
if (err) {
printk("AT+CFUN failed\n");
}
/* Let's monitor link quality while attempting to register to network */
printk("Resuming link quality monitor for AT notifications\n");
at_monitor_resume(&link_quality);
printk("Waiting for network\n");
err = k_sem_take(&cereg_sem, K_SECONDS(20));
}
int main(void)
{
init();
return 0;
}
I get the following output:
*** Booting Zephyr OS build v3.3.99-ncs1 *** AT Monitor sample started AT+CGMR: mfw-pti_nrf9160_1.1.6 OK Subscribing to notifications AT+CEREG failed: 1 AT+CESQ failed: 1 Connecting to network AT+CFUN failed AT+CFUN failed Resuming link quality monitor for AT notifications Waiting for network
When testing on the nrf9160dk board it seems to work fine:
*** Booting Zephyr OS build v3.3.99-ncs1 *** AT Monitor sample started AT+CGMR: mfw_nrf9160_1.3.5 OK Subscribing to notifications Connecting to network Resuming link quality monitor for AT notifications Waiting for network Link quality: -112 dBm Network registration status: searching Link quality: -109 dBm Link quality: -117 dBm Link quality: -116 dBm Link quality: -117 dBm Link quality: -116 dBm Link quality: -118 dBm Network registration status: roaming Link quality: -111 dBm
What do the error codes mean?
