File content as of revision 5:dee05a7c70f9:

#include "mbed.h"
#include "C027.h"
#include "UbloxUSBGSMModem.h"
#include "UbloxUSBCDMAModem.h"

#include "MbedSmartRest.h"
#include "StaticData.h"
#include "ComposedRecord.h"
#include "CharValue.h"
#include "IntegerValue.h"
#include "FloatValue.h"

const char * const serialNumber = "ublox-123456789";
StaticData srtpl(
// get device by identity
// Usage: 100,<SERIAL/NR>
"10,100,GET,/identity/externalIds/c8y_Serial/%%,,application/vnd.com.nsn.cumulocity.externalId+json,%%,STRING,\r\n"
// get device id from identity
// Response: 200,<DEVICE/ID>
"11,200,\"$.managedObject\",,\"$.id\"\r\n"
// Create device
// Usage: 101,<SERIAL/NR>
"10,101,POST,/inventory/managedObjects,application/vnd.com.nsn.cumulocity.managedObject+json,application/vnd.com.nsn.cumulocity.managedObject+json,%%,STRING,\"{\"\"name\"\":\"\"Curl Test Device\"\",\"\"type\"\":\"\"com_yourcompany?CurlDevice_1.0\"\",\"\"c8y_Hardware\"\":{\"\"revision\"\":\"\"1\"\",\"\"model\"\":\"\"Curl Test Device\"\",\"\"serialNumber\"\":\"\"%%\"\"},\"\"c8y_SupportedMeasurements\"\":[\"\"c8y_SignalStrength\"\"],\"\"c8y_IsDevice\"\":{}}\"\r\n"
// Get device id
// Response: 201,<DEVICE/ID>
"11,201,,\"$.c8y_IsDevice\",\"$.id\"\r\n"
// Insert global ID
// Usage: 102,<DEVICE/ID>,<SERIAL/NR>
"10,102,POST,/identity/globalIds/%%/externalIds,application/vnd.com.nsn.cumulocity.externalId+json,application/vnd.com.nsn.cumulocity.externalId+json,%%,UNSIGNED STRING,\"{\"\"type\"\":\"\"c8y_Serial\"\",\"\"externalId\"\":\"\"%%\"\"}\"\r\n"
// Insert measurement
// USAGE: 103,<DEVICE/ID>,<RSSI>,<BER>
"10,103,POST,/measurement/measurements,application/vnd.com.nsn.cumulocity.measurement+json,application/vnd.com.nsn.cumulocity.measurement+json,%%,NOW UNSIGNED NUMBER UNSIGNED,\"{\"\"time\"\":\"\"%%\"\",\"\"source\"\":{\"\"id\"\":\"\"%%\"\"},\"\"type\"\":\"\"c8y_SignalStrength\"\",\"\"c8y_SignalStrength\"\":{\"\"rssi\"\":{\"\"value\"\":%%,\"\"unit\"\":\"\"dBm\"\"},\"\"ber\"\":{\"\"value\"\":%%,\"\"unit\"\":\"\"%\"\"}}}\"\r\n"
);

long existing();
long create();
bool identify(long deviceId);
bool measurement(long deviceId, double rssi, int ber);

C027 c027;
MbedSmartRest client("http://developer.cumulocity.com/s", "vaillant/admin", "klanpi", "com_u-blox_C027_REV-A_0.3");
//MbedSmartRest client("http://nocore.info:8888/", "vaillant/admin", "klanpi", "com_cumulocity_MbedTestDevice_2.0");

int main()
{
    long deviceId; double rssi; int ber;
    
    puts("Hello!");

     c027.mdmWakeup();
     c027.mdmReset();
     c027.mdmPower(true);
     UbloxUSBGSMModem modem;

    if (modem.connect("public4.m2minternet.com")) {
        puts("GPRS connection failure.");
        return 2;
    }
    
    puts("Bootstrapping");
    if (client.bootstrap(srtpl) != SMARTREST_SUCCESS) {
        puts("Bootstrapping failed.");
        return 2;
    }
    
    puts("Starting action...");
    
    if ((deviceId = existing()) == 0) {
        deviceId = create();
        if (deviceId != 0)
            identify(deviceId);
    }

    printf("Device ID: %ld\r\n", deviceId);
    
    if (deviceId != 0) {
        rssi = -50;
        ber = 50;
        
        while (true) {
            printf("[MEASUREMENT] RSSI: %lf, BER: %d %%\n", rssi, ber);
            measurement(deviceId, rssi, ber);
            wait(60000);
        }
    }

    modem.disconnect();
    c027.mdmPower(false);    
    return 0;
}

long existing()
{
    ComposedRecord newMoRec(true); // set copy=true b/c tmp objects
    ParsedRecord received;

    puts("Checking for device existance...");

    newMoRec.add(IntegerValue(100)).add(CharValue(serialNumber));

    if (client.send(newMoRec) != SMARTREST_SUCCESS) {
        puts("Send failed.");
        return 0;
    }

    if (client.receive(received) != SMARTREST_SUCCESS) {
        puts("No device found.");
        return 0;
    }

    if (received.values() == 0) {
        puts("Received no values.");
        return 0;
    }
    if (received.value(0).integerValue() == 50) {
        client.stop();
        return 0;
    }
    
    if (received.value(0).integerValue() != 200) {
        puts("Bad response.");
        return 0;
    }

    client.stop();
    return received.value(2).integerValue();
}

long create()
{
    ComposedRecord newMoRec(true); // set copy=true b/c tmp objects
    ParsedRecord received;

    puts("Creating device...");

    newMoRec.add(IntegerValue(101)).add(CharValue(serialNumber));

    if (client.send(newMoRec) != SMARTREST_SUCCESS) {
        puts("Send failed.");
        return 0;
    }

    if (client.receive(received) != SMARTREST_SUCCESS) {
        puts("No device found.");
        return 0;
    }

    if (received.values() != 3) {
        puts("Bad received data.");
        return 0;
    }
    
    if (received.value(0).integerValue() != 201) {
        puts("Bad received data.");
        return 0;
    }

    client.stop();
    return received.value(2).integerValue();
}

bool identify(long deviceId)
{
    ComposedRecord newMoRec(true); // set copy=true b/c tmp objects
    ParsedRecord received;

    puts("Adding global identifier...");

    newMoRec.add(IntegerValue(102)).add(IntegerValue(deviceId)).add(CharValue(serialNumber));

    if (client.send(newMoRec) != SMARTREST_SUCCESS) {
        puts("Sending failed.");
        return false;
    }

    if (client.receive(received) != SMARTREST_SUCCESS) {
        puts("Failed.");
        return false;
    }

    if (received.values() != 3) {
        puts("Received bad data.");
        return false;
    }
    
    if (received.value(0).integerValue() != 200) {
        puts("Received bad data.");
        return false;
    }

    client.stop();
    return true;
}

bool measurement(long deviceId, double rssi, int ber)
{
    ComposedRecord newMoRec(true); // set copy=true b/c tmp objects
    
    puts("Creating measurement...");

    newMoRec.add(IntegerValue(103)).add(IntegerValue(deviceId)).add(FloatValue(rssi, 0)).add(IntegerValue(ber));

    if (client.send(newMoRec) != SMARTREST_SUCCESS) {
        puts("Send failed.");
        return false;
    }

    client.stop();
    return true;
}