Hi smgs,
Thanks for your interest.
I am currently diving deeper into libraries up to AT commands
Currently, even a simple test sketch like GSMScanNetwork is not working (From MKRGSM Lib, see below)
I have tried 2 boards, i am using a soracom iot simcard AND i have tried several loaded lipo batteries.
I have activated the AT debug option line 26, passing the TRUE parameter to the gsmAccess object constructor : GSM gsmAccess(true);
It gets stuck with console showing :
...
AT+CREG?
+CREG: 0,0
OK
AT+CREG?
+CREG: 0,0
OK
AT+CREG?
+CREG: 0,0
OK
If the board gets no signal, or if there is a problem with AT+CREG?, there should be time out and the loop should continue...AM I WRONG ?
// libraries
#include <MKRGSM.h>
//#include "arduino_secrets.h"
// Please enter your sensitive data in the Secret tab or arduino_secrets.h
// PIN Number
const char PINNUMBER[] = "";
// initialize the library instance
GSM gsmAccess(true); // include a 'true' parameter to enable debugging
GSMScanner scannerNetworks;
GSMModem modemTest;
// Save data variables
String IMEI = "";
// serial monitor result messages
String errortext = "ERROR";
void setup() {
// initialize serial communications and wait for port to open:
Serial.begin(9600);
while (!Serial) {
; // wait for serial port to connect. Needed for Leonardo only
}
MODEM.debug();
Serial.println("GSM networks scanner");
scannerNetworks.begin();
// connection state
boolean connected = false;
// Start GSM shield
// If your SIM has PIN, pass it as a parameter of begin() in quotes
while (!connected) {
if (gsmAccess.begin(PINNUMBER) == GSM_READY) {
connected = true;
} else {
Serial.println("Not connected");
delay(1000);
}
}
// get modem parameters
// IMEI, modem unique identifier
Serial.print("Modem IMEI: ");
IMEI = modemTest.getIMEI();
IMEI.replace("\n", "");
if (IMEI != NULL) {
Serial.println(IMEI);
}
}
void loop() {
// scan for existing networks, displays a list of networks
Serial.println("Scanning available networks. May take some seconds.");
Serial.println(scannerNetworks.readNetworks());
// currently connected carrier
Serial.print("Current carrier: ");
Serial.println(scannerNetworks.getCurrentCarrier());
// returns strength and ber
// signal strength in 0-31 scale. 31 means power > 51dBm
// BER is the Bit Error Rate. 0-7 scale. 99=not detectable
Serial.print("Signal Strength: ");
Serial.print(scannerNetworks.getSignalStrength());
Serial.println(" [0-31]");
}