File content as of revision 0:04eef28d3932:

/*
#include "mbed.h"
#include "BME280.h"
#ifdef TARGET_UBLOX_C027
 #include "C027_api.h"
#else
 #error "This example is targeted for the C027 platform"
#endif

DigitalOut myled(LED1);
Serial pc(USBTX, USBRX);
I2C i2c(P0_0, P0_1);
BME280 sensor(i2c);

int main() {
    float temp = 0;
    float pres = 0;
    float humid = 0;
    pc.printf("Starting simple test program");
    
    sensor.initialize();
    while(1) {
        myled = !myled;
        wait(0.2);
        temp = sensor.getTemperature();
        pres = sensor.getPressure();
        humid = sensor.getHumidity();
        pc.printf("temp: %f, pres: %f, humid: %f\n", temp, pres, humid);
    }    
}
*/

/*******************************************************************************
 * Copyright (c) 2014 IBM Corp.
 *
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * and Eclipse Distribution License v1.0 which accompany this distribution.
 *
 * The Eclipse Public License is available at
 *    http://www.eclipse.org/legal/epl-v10.html
 * and the Eclipse Distribution License is available at
 *   http://www.eclipse.org/org/documents/edl-v10.php.
 *
 * Contributors:
 *    Sam Danbury - initial implementation
 *    Ian Craggs - refactoring to remove STL and other changes
 *    Sam Grove  - added check for Ethernet cable.
 *    Chris Styles - Added additional menu screen for software revision
 *
 * To do :
 *    Add magnetometer sensor output to IoT data stream
 *
 *******************************************************************************/

#define USE_CELLULAR    // Enable this switch on the C027 to use cellular


#include "MQTTClient.h"

#include "rtos.h"

// Update this to the next number *before* a commit
#define __APP_SW_REVISION__ "11"
#define BOARD_NAME "IoT u-blox"

// Configuration values needed to connect to IBM IoT Cloud
#define ORG "quickstart"             // For a registered connection, replace with your org
#define ID ""                        // For a registered connection, replace with your id
#define AUTH_TOKEN ""                // For a registered connection, replace with your auth-token
#define TYPE_NAME DEFAULT_TYPE_NAME  // For a registered connection, replace with your type

#define MQTT_PORT 1883
#define MQTT_TLS_PORT 8883
#define IBM_IOT_PORT MQTT_PORT

#define MQTT_MAX_PACKET_SIZE 250

//------------------------------------------------------------------------------------
// 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      "1111" //default EE sim pin
/*! 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         "everywhere" //EE default
//! 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 
//------------------------------------------------------------------------------------
# include "GPS.h"
//------------------------------------------------------------------------------------


static uint32_t linkStatus(void) { return true; }

#define DEFAULT_TYPE_NAME "iotsample-mbed-c027"

#define MQTT_CLIENT_TYPE MQTTSocket
#include "MQTTSocket.h"

bool quickstartMode = true;
char org[11] = ORG;  
char type[30] = TYPE_NAME;
char id[30] = ID;                 // device ID
char auth_token[30] = AUTH_TOKEN; // Auth_token is only used in non-quickstart mode

bool connected = false;

int connect(MQTT::Client<MQTT_CLIENT_TYPE, Countdown, MQTT_MAX_PACKET_SIZE>* client, MQTT_CLIENT_TYPE* ipstack)
{   
    const char* iot_ibm = ".messaging.internetofthings.ibmcloud.com";
    
    char hostname[strlen(org) + strlen(iot_ibm) + 1];
    sprintf(hostname, "%s%s", org, iot_ibm);
    DEBUG("hostname is %s\n", hostname);
    int rc = ipstack->connect(hostname, IBM_IOT_PORT);
    if (rc != 0)
        return rc;
     
    // Construct clientId - d:org:type:id
    char clientId[strlen(org) + strlen(type) + strlen(id) + 5];
    sprintf(clientId, "d:%s:%s:%s", org, type, id);
    DEBUG("clientid is %s\n", clientId);
    
    // MQTT Connect
    MQTTPacket_connectData data = MQTTPacket_connectData_initializer;
    data.MQTTVersion = 3;
    data.clientID.cstring = clientId;
    
    if (!quickstartMode) 
    {        
        data.username.cstring = "use-token-auth";
        data.password.cstring = auth_token;
    }
    
    if ((rc = client->connect(data)) == 0) 
    {       
        connected = true;
    }
    return rc;
}


int getConnTimeout(int attemptNumber)
{  // First 10 attempts try within 3 seconds, next 10 attempts retry after every 1 minute
   // after 20 attempts, retry every 10 minutes
    return (attemptNumber < 10) ? 3 : (attemptNumber < 20) ? 60 : 600;
}


void attemptConnect(MQTT::Client<MQTT_CLIENT_TYPE, Countdown, MQTT_MAX_PACKET_SIZE>* client, MQTT_CLIENT_TYPE* ipstack)
{
    int retryAttempt = 0;
    connected = false;
    
    // make sure a cable is connected before starting to connect
    while (!linkStatus()) {
        wait(1.0f);
        WARN("Internet link not present. Check cable connection\n");
    }
        
    while (connect(client, ipstack) != 0) 
    {    
        int timeout = getConnTimeout(++retryAttempt);
        WARN("Retry attempt number %d waiting %d\n", retryAttempt, timeout);
        
        // if ipstack and client were on the heap we could deconstruct and goto a label where they are constructed
        //  or maybe just add the proper members to do this disconnect and call attemptConnect(...)
        
        // this works - reset the system when the retry count gets to a threshold
        if (retryAttempt == 5)
            NVIC_SystemReset();
        else
            wait(timeout);
    }
}


int publish(MQTT::Client<MQTT_CLIENT_TYPE, Countdown, MQTT_MAX_PACKET_SIZE>* client, MQTT_CLIENT_TYPE* ipstack)
{
    MQTT::Message message;
    char* pubTopic = "iot-2/evt/status/fmt/json";
            
    char buf[250];
    int l = 0;
    l += sprintf(buf+l,"{\"d\":{\"myName\":\"%s\"", BOARD_NAME);
    //if (shieldConnected) {
        /*
        l += sprintf(buf+l,",\"accelX\":%0.4f,\"accelY\":%0.4f,\"accelZ\":%0.4f", MMA.x(), MMA.y(), MMA.z());
        l += sprintf(buf+l,",\"temp\":%0.4f", sensor.temp());
        l += sprintf(buf+l,",\"joystick\":\"%s\"", joystickPos);
        l += sprintf(buf+l,",\"potentiometer1\":%0.4f,\"potentiometer2\":%0.4f", ain1.read(), ain2.read());
        */
        //l += sprintf(buf+l,",\"temp\":%0.4f", sensor.getTemperature());
    //}
    l += sprintf(buf+l,"}}");

    message.qos = MQTT::QOS0;
    message.retained = false;
    message.dup = false;
    message.payload = (void*)buf;
    message.payloadlen = strlen(buf);
    
    LOG("Publishing %s\n", buf);
    return client->publish(pubTopic, message);
}

int publishMdm(MQTT::Client<MQTT_CLIENT_TYPE, Countdown, MQTT_MAX_PACKET_SIZE>* client, MQTT_CLIENT_TYPE* ipstack, MDMParser* mdm)
{
    MQTT::Message message;
    char* pubTopic = "iot-2/evt/modem/fmt/json";
    char buf[250];
    int l = 0;
    MDMParser::IP ip = mdm->getIpAddress();
    l += sprintf(buf+l,"{\"d\":{\"ip\":\"" IPSTR "\"", IPNUM(ip));
    MDMParser::NetStatus sta;
    mdm->checkNetStatus(&sta);
    //const char* txtAct[] = { "Unknown", "GSM", "Edge", "3G", "CDMA" };
    //if (sta.act < sizeof(txtAct)/sizeof(*txtAct) && (sta.act != MDMParser::ACT_UNKNOWN))
    //    l += sprintf(buf+l,",\"act\":\"%s\"",txtAct[sta.act]);
    //if (*sta.num)             l += sprintf(buf+l,",\"num\":\"%s\"",sta.num);
    //if (sta.lac != 0xFFFF)    l += sprintf(buf+l,",\"lac\":\"%04X\"",sta.lac);
    //if (sta.ci != 0xFFFFFFFF) l += sprintf(buf+l,",\"ci\":\"%06X\"",sta.ci);
    if (sta.rssi)             l += sprintf(buf+l,",\"rssi\":%d",sta.rssi);
    if (sta.ber)              l += sprintf(buf+l,",\"ber\":%d",sta.ber);
    if (*sta.opr)             l += sprintf(buf+l,",\"operator\":\"%s\"",sta.opr);
    l += sprintf(buf+l,"}}");

    message.qos = MQTT::QOS0;
    message.retained = false;
    message.dup = false;
    message.payload = (void*)buf;
    message.payloadlen = strlen(buf);
    
    LOG("Publishing %s\n", buf);
    return client->publish(pubTopic, message);
}

int publishGps(MQTT::Client<MQTT_CLIENT_TYPE, Countdown, MQTT_MAX_PACKET_SIZE>* client, MQTT_CLIENT_TYPE* ipstack, double lat, double lon)
{
    MQTT::Message message;
    char* pubTopic = "iot-2/evt/gps/fmt/json";
    char buf[250];
    sprintf(buf,"{\"d\":{\"lat\":\"%.7f\",\"long\":\"%.7f\"}}", lat, lon);
    message.qos = MQTT::QOS0;
    message.retained = false;
    message.dup = false;
    message.payload = (void*)buf;
    message.payloadlen = strlen(buf);
    LOG("Publishing GPS %s\n", buf);
    return client->publish(pubTopic, message);
}

void messageArrived(MQTT::MessageData& md)
{
    MQTT::Message &message = md.message;
    char topic[md.topicName.lenstring.len + 1];
    
    sprintf(topic, "%.*s", md.topicName.lenstring.len, md.topicName.lenstring.data);
    
    LOG("Message arrived on topic %s: %.*s\n",  topic, message.payloadlen, message.payload);
          
    // Command topic: iot-2/cmd/blink/fmt/json - cmd is the string between cmd/ and /fmt/
    char* start = strstr(topic, "/cmd/") + 5;
    int len = strstr(topic, "/fmt/") - start;
    
    if (memcmp(start, "blink", len) == 0)
    {
        char payload[message.payloadlen + 1];
        sprintf(payload, "%.*s", message.payloadlen, (char*)message.payload);
    
        char* pos = strchr(payload, '}');
        
        
        
        
        if (pos != NULL)
        {
            *pos = '\0';
            if ((pos = strchr(payload, ':')) != NULL)
            {
                //int blink_rate = atoi(pos + 1);       
                //blink_interval = (blink_rate <= 0) ? 0 : (blink_rate > 50 ? 1 : 50/blink_rate);
            }
        }
    }
    else
        WARN("Unsupported command: %.*s\n", len, start);
}

int main()
{    
    printf("Starting program\n");

    printf("Connecting");
    
    MDMSerial mdm;
    //mdm.setDebug(3); // enable this for debugging issues 
    if (!mdm.connect(SIMPIN, APN,USERNAME,PASSWORD))
        return -1;

    GPSI2C gps;
    
    MQTT_CLIENT_TYPE ipstack;
    MQTT::Client<MQTT_CLIENT_TYPE, Countdown, MQTT_MAX_PACKET_SIZE> client(ipstack);
    if (quickstartMode)
    {
        MDMParser::DevStatus dev;
        mdm.getDevStatus(&dev);
        if      (*dev.imei) strncpy(id, dev.imei, sizeof(id)-1);
        else if (*dev.meid) strncpy(id, dev.meid, sizeof(id)-1);
    }
    
    LOG("IBM Quickstart: https://quickstart.internetofthings.ibmcloud.com/#/device/%s/sensor/\n", id);
    
    attemptConnect(&client, &ipstack);
    
    if (!quickstartMode) 
    {
        int rc = 0;
        if ((rc = client.subscribe("iot-2/cmd/+/fmt/json", MQTT::QOS1, messageArrived)) != 0)
            WARN("rc from MQTT subscribe is %d\n", rc); 
    }
    
    //blink_interval = 0;
    int count = 0;
    int count2 = 0;
    while (true)
    {
        if (++count == 100)
        {               // Publish a message every second
            if ((publish(&client, &ipstack) != 0) ||
                (publishMdm(&client, &ipstack, &mdm) != 0)) 
                attemptConnect(&client, &ipstack);   // if we have lost the connection
            count = 0;
        }
        if (++count2 == 10)
        {               // Publish a message every second
            count2 = 0;
            while (1) {
                char buf[256];
                int ret = gps.getMessage(buf, sizeof(buf));
                if (ret <= 0) break;
                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("%.*s\n", len, buf); 
                            char ch;
                            double latitude, longitude, elevation;
                            static double lastLat = 0, lastLon = 0;
                            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); 
                                if ((ch == '1' || ch == '2' || ch == '6') && 
                                    (fabs(lastLat - latitude)  < 0.0000001) && 
                                    (fabs(lastLon - longitude) < 0.0000001)) {
                                    publishGps(&client, &ipstack, latitude, longitude);
                                    lastLat = latitude;
                                    lastLon = longitude;
                                }
                            }
                        }
                    }
                }
            }
        }
        

        client.yield(10);  // allow the MQTT client to receive messages
    }
}