Hi,
I am testing NBIOT network in Denmark and trying to send data packets (like signal strength) to server every time interval. Do you have any such examples where I can take reference?
Meanwhile I tried to send UDP packet trough sketch whrere it send UDP packet on every 10 SEC.
I made some changes on Sodaq_nbIOT.cpp library where I added connectSocket() method which calls AT+NSOST command to send data to UDP server. With this steps we are getting timeed out response.
But same steps with normal AT commands I can send UDP packet to server.
NB- Here in Denmark there is no any network provider who supports CDP so trying to connect to server with UDP .
Please help me to send my packet to server 
Logs while sending UDP through AT commands-
Send to COM24: “AT+NSOCR=“DGRAM”,17,14000”<<
0
OKSend to COM24: "AT+NSOST=0,“37.139.21.140”,8989,17,“73616d706c65446174613a3131312e3030"”<<
0,17
OK
+NSONMI: 0,17Send to COM24: “AT+NSOST=0,“37.139.21.140”,8989,9,“2B4E434F4E4649473F””<<
0,9
OK
Logs while sending from sketch
rdResp: timed out
AT+CGDCONT=1,“IP”,“company.iot.dk1.tdc”
rdResp: OKAT+NCDP=“8.8.8.8”
rdResp: OKAT+NSMI=0
rdResp: OKAT+NNMI=0
rdResp: OKAT+CFUN=1
rdResp: OKAT+COPS=1,2,“23810”
rdResp: OKAT+CSQ
rdResp: +CSQ: 27,99
rdResp: OK
Failed to connect!
Start new message…>> AT+CGATT?
rdResp: +CGATT: 1
rdResp: OK
NBIOT is connected…>> AT+CSQ
rdResp: +CSQ: 27,99
rdResp: OK
Signal Message-AT+NCONFIG?
>> AT+NSOST=0,“37.139.21.140”,8989,11,"41542B4E434F4E4649473F"rdResp: timed out
Message sent failed…
Method to send UDP packet (Sorry, I am java programmer not good at c++ ;))
bool Sodaq_nbIOT::connectSocket(uint8_t socket, const char* host,
uint16_t port) {
int8_t rssi;
uint8_t ber;
if (getRSSIAndBER(&rssi, &ber)) {
String message1 = “SignalStrength:” + rssi;
DEBUG_STREAM.println(“Signal Message-” + message1);
const char* charArr = message1.c_str();
size_t size = strlen(charArr);
print(“AT+NSOST=”);
print(socket);
print(","");
print(host);
print(""");
print("," );
print(port);
print("," );
print (size);
print(","");
for (uint16_t i = 0; i < size; ++i) {
print(static_cast(NIBBLE_TO_HEX_CHAR(HIGH_NIBBLE(charArr[i]))));
print(static_cast(NIBBLE_TO_HEX_CHAR(LOW_NIBBLE(charArr[i]))));
}
print(""");
return (readResponse() == ResponseOK);
}
return false;
}
Sketch is like this
void setup() {
sodaq_wdt_safe_delay(STARTUP_DELAY);
DEBUG_STREAM.begin(DEBUG_STREAM_BAUD);
MODEM_STREAM.begin(nbiot.getDefaultBaudrate());
while ((!DEBUG_STREAM) && (millis() < 10000)) {
// Wait for serial monitor for 10 seconds
}
DEBUG_STREAM.print("Initializing and connecting... ");
nbiot.init(MODEM_STREAM, MODEM_ON_OFF_PIN);
nbiot.setDiag(DEBUG_STREAM);
if (nbiot.connect(apn, cdp, forceOperator)) {
DEBUG_STREAM.println("Connected succesfully!");
DEBUG_STREAM.println("Creating socket...!");
socketResponsePort = nbiot.createSocket(14000);
DEBUG_STREAM.println("Creating socket sucessfully...!");
} else {
DEBUG_STREAM.println("Failed to connect!");
return;
}
}
void loop() {
DEBUG_STREAM.print(“Start new message…”);
if (nbiot.isConnected() && socketResponsePort >= 0) {
DEBUG_STREAM.print(“NBIOT is connected…”);
if (nbiot.connectSocket(socketResponsePort, udpServer, udpServerPort)) {
DEBUG_STREAM.println(“Message sent successfully…”);
} else {
DEBUG_STREAM.println(“Message sent failed…”);
}
}
DEBUG_STREAM.println("---------------------------------");
sodaq_wdt_safe_delay(10000);
}