Example program that reads in sensor data and sends it to the 2lemetry cloud.
Dependencies: FXLS8471Q MPL3115A2 MQTT mbed
Fork of 2lemetry_Sensor_Example by
main.cpp
- Committer:
- mfiore
- Date:
- 2014-10-28
- Revision:
- 0:b8d93d878bcb
- Child:
- 1:76498fdfbecf
File content as of revision 0:b8d93d878bcb:
#include "mbed.h" #include "mtsas.h" #include "PubSubClient.h" /* PLEASE READ THIS! * The following fields must be populated in order to properly send data to the "Default ThingFabric Project" in your 2lemetry account using the MQTT client * You must have a hacker (or higher) account at http://app.thingfabric.com * After you register and login, follow the steps below to set up your client * Click on "Default ThingFabric Project" * Set _2LEMETRY_DOMAIN to the string after "Project" at the top of the page * Click on "Credentials" * Click on "Default ThingFabric Credential" * Set _2LEMETRY_USER_ID to the value in the "Key (Username)" field * Set _2LEMETRY_TOKEN to the value in the "MD5 Secret" field * If you are running this code on multiple devices, you will want to make the _2LEMETRY_DEVICE_ID field unique for each device * Set the _APN field to the APN provided with your sim card * Build, flash, and run * This code sends a random integer value approximately every 30 seconds * Click on "Default ThingFabric Project" * Click on "Analytics" * You should be able to see your test data (page needs to be refreshed periodically, it doesn't automatically refresh) */ char _2LEMETRY_USERID[] = ""; char _2LEMETRY_TOKEN[] = ""; char _2LEMETRY_DOMAIN[] = ""; char _2LEMETRY_STUFF[] = "things"; char _2LEMETRY_DEVICE_ID[] = "nucleo-0001"; char _APN[] = ""; char _host[] = "q.mq.tt"; int _port = 1883; void callback(char* topic, char* payload, unsigned int len) { logInfo("topic: [%s]\r\npayload: [%s]", topic, payload); } int main() { MTSLog::setLogLevel(MTSLog::TRACE_LEVEL); // for Nucleo boards MTSSerialFlowControl io(D8, D2, D3, D6); io.baud(115200); Cellular* radio = CellularFactory::create(&io); if (! radio) { logFatal("failed to create Cellular object - exiting"); return 1; } radio->configureSignals(D4,D7,RESET); Transport::setTransport(radio); while (radio->setApn(_APN) != MTS_SUCCESS) { logError("failed to set APN [%s]", _APN); wait(2); } while (! radio->connect()) { logError("failed to bring up PPP link"); wait(2); } PubSubClient mqtt(_host, _port, callback); char topicStr[128]; char buf[64]; snprintf(topicStr, sizeof(topicStr), "%s/%s/%s", _2LEMETRY_DOMAIN, _2LEMETRY_STUFF, _2LEMETRY_DEVICE_ID); while (true) { if (! mqtt.connect(_2LEMETRY_DEVICE_ID, _2LEMETRY_USERID, _2LEMETRY_TOKEN)) { logError("failed to connect to 2lemetry server"); continue; } snprintf(buf, sizeof(buf), "{\"test\":%d}", rand()); logInfo("publishing: [%s]", buf); if (! mqtt.publish(topicStr, buf)) { logError("failed to publish: [%s]", buf); } wait(1); mqtt.loop(); mqtt.disconnect(); wait(30); } return 0; }