File content as of revision 19:277dd9f95c9d:

#include <jsonlite.h>
#include "M2XStreamClient.h"

#include "mbed.h"
#include "rtos.h"
#define RTOS_H
#include "GPS.h"    //GPS

//------------------------------------------------------------------------------------
// You need to configure these cellular modem / SIM parameters.
// These parameters are ignored for LISA-C200 variants and can be left NULL.
//------------------------------------------------------------------------------------
#include "MDM.h"
//! Set your secret SIM pin here (e.g. "1234"). Check your SIM manual.
#define SIMPIN      NULL
/*! The APN of your network operator SIM, sometimes it is "internet" check your 
    contract with the network operator. You can also try to look-up your settings in 
    google: https://www.google.de/search?q=APN+list */
#define APN         NULL
//! Set the user name for your APN, or NULL if not needed
#define USERNAME    NULL
//! Set the password for your APN, or NULL if not needed
#define PASSWORD    NULL 
//------------------------------------------------------------------------------------

char feedId[] = "81b9fcc5a8585c55ae622488f50d8de0"; // Feed you want to post to
char m2xKey[] = "1e1133cd475954868602c0f7503d4f22"; // Your M2X access key

char name[] = "<location name>"; // Name of current location of datasource
double latitude = 33.007872;
double longitude = -96.751614; // You can also read those values from a GPS
double elevation = 697.00;
bool location_valid = false;

Client client;
M2XStreamClient m2xClient(&client, m2xKey);

void on_data_point_found(const char* at, const char* value, int index, void* context, int type) {
  printf("Found a data point, index: %d\r\n", index);
  printf("At: %s Value: %s\r\n", at, value);
}

void on_location_found(const char* name,
                       double latitude,
                       double longitude,
                       double elevation,
                       const char* timestamp,
                       int index,
                       void* context) {
  printf("Found a location, index: %d\r\n", index);
  printf("Name: %s  Latitude: %lf  Longitude: %lf\r\n", name, latitude, longitude);
  printf("Elevation: %lf  Timestamp: %s\r\n", elevation, timestamp);
}

void gpsTask(void const* argument) 
{
    GPSI2C gps;
    char buf[256];
    while (1) {
        int ret = gps.getMessage(buf, sizeof(buf));
        if (ret > 0) {
            int len = LENGTH(ret);
            if ((PROTOCOL(ret) == GPSParser::NMEA) && (len > 6)) {
                // talker is $GA=Galileo $GB=Beidou $GL=Glonass $GN=Combined $GP=GPS
                if ((buf[0] == '$') || buf[1] == 'G') {
                    #define _CHECK_TALKER(s) ((buf[3] == s[0]) && (buf[4] == s[1]) && (buf[5] == s[2]))
                    if (_CHECK_TALKER("GGA")) {
                        //printf("%.*sr\n", len, buf); 
                        char ch;
                        if (gps.getNmeaAngle(2,buf,len,latitude) && 
                            gps.getNmeaAngle(4,buf,len,longitude) && 
                            gps.getNmeaItem(6,buf,len,ch) &&
                            gps.getNmeaItem(9,buf,len,elevation)) {
                           printf("GPS Location: %.5f %.5f %.1f %c\r\n", latitude, longitude, elevation, ch); 
                           location_valid = ch == '1' || ch == '2' || ch == '6';
                        }
                    }
                }
            }
        } else
            Thread::wait(100);
    }
}

int main() {
#if defined(TARGET_STM) 
  MDMSerial mdm(D8,D2); // use the serrial port on D2 / D8
#else
  MDMSerial mdm;
#endif  
  GPSI2C gps;
  Thread task2(gpsTask,  NULL, osPriorityNormal, 2048);
  
  //mdm.setDebug(4); // enable this for debugging issues 
  if (!mdm.connect(SIMPIN, APN,USERNAME,PASSWORD))
    return -1;
 
  char buf[256];
  
  Timer tmr;
  tmr.reset();
  tmr.start();
  while (1) {
    if (tmr.read_ms() > 1000) {
        tmr.reset();
        tmr.start();
        int response;
        
        MDMParser::NetStatus status;
        if (mdm.checkNetStatus(&status)) {
            sprintf(buf, "%d", status.rssi);
            response = m2xClient.updateStreamValue(feedId, "rssi", buf);
            printf("Put response code: %d\r\n", response);
            if (response == -1) while (true) ;
        }
#define READING
#ifdef READING
        // read signal strength
        response = m2xClient.listStreamValues(feedId, "rssi", on_data_point_found, NULL);
        printf("Fetch response code: %d\r\n", response);
        if (response == -1) while (true) ;
#endif    
        // update location
        if (location_valid) {
            response = m2xClient.updateLocation(feedId, name, latitude, longitude, elevation);
            printf("updateLocation response code: %d\r\n", response);
            if (response == -1) while (true) ;
        }
#ifdef READING
        // read location
        response = m2xClient.readLocation(feedId, on_location_found, NULL);
        printf("readLocation response code: %d\r\n", response);
        if (response == -1) while (true) ;
#endif
    }
    else {
        Thread::wait(100);
    }
  }

  mdm.disconnect();
  mdm.powerOff();
}