IBM Watson IoT
A library that simplifies interactions with the IBM Internet of Things Foundation
Dependencies: MQTT
Dependents: IBMIoTClientLibrarySamplefinal IBMWIoTPSecureClientSample IBMIoTClientLibrarySample
Introduction
Use the mBed C++ client library to easily connect mBed devices, such as LPC1768 or FRDM-K64F, to the IBM Watson™ IoT Platform service.
Although the library uses C++, it still avoids dynamic memory allocations and the use of STL functions, because the mBed devices sometimes have idiosyncratic memory models that make porting difficult. In any case, the library allows you to make memory use as predictable as possible.
Dependencies
| Dependency | Description |
|---|---|
| Eclipse Paho MQTT library | Provides an MQTT client library for mBed devices. For more information, see Embedded MQTT C/C++ client libraries |
| mbed-os | ARM mbed OS |
How to use the library
Use the mBed compiler to create your applications when you use the mBed C++ IBMIoTF client library. The mBed compiler provides a lightweight online C/C++ IDE that is configured for writing, compiling, and downloading programs to run on your mBed microcontroller.
Note: You don't have to install or set up anything to get running with mBed.
For information on how to connect an ARM mBed NXP LPC 1768 microcontroller to the Watson IoT Platform, see the mBed C++ client library for IBM Watson IoT Platform recipe.
Supported Features
| Feature | Supported? |
|---|---|
| Device connectivity | Yes |
| Event publish | Yes |
| Command receipt | Yes |
| SSL/TLS | Yes |
| Device Management | No |
License
This library is shipped under License Eclipse Public License - v 1.0 and Eclipse Distribution License v1.0
For more information about the Eclipse Public License - v 1.0, refer this page. Also, for more information about the Eclipse Distribution License v1.0, refer this page.
Contributor License Agreement
Version 1.0.0 January 14, 2014
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DeviceClient.h@1:31c93319bbd8, 2015-11-06 (annotated)
- Committer:
- sathipal
- Date:
- Fri Nov 06 09:01:29 2015 +0000
- Revision:
- 1:31c93319bbd8
- Parent:
- 0:f86732d81998
Added a GetDeviceId() method and hidden getMac()
Who changed what in which revision?
| User | Revision | Line number | New contents of line |
|---|---|---|---|
| sathipal | 0:f86732d81998 | 1 | #ifndef DeviceClient_H |
| sathipal | 0:f86732d81998 | 2 | #define DeviceClient_H |
| sathipal | 0:f86732d81998 | 3 | |
| sathipal | 0:f86732d81998 | 4 | #include "MQTTEthernet.h" |
| sathipal | 0:f86732d81998 | 5 | #include "MQTTClient.h" |
| sathipal | 0:f86732d81998 | 6 | #include "Command.h" |
| sathipal | 0:f86732d81998 | 7 | |
| sathipal | 0:f86732d81998 | 8 | // Update this to the next number *before* a commit |
| sathipal | 0:f86732d81998 | 9 | #define __APP_SW_REVISION__ "0.0.1" |
| sathipal | 0:f86732d81998 | 10 | |
| sathipal | 0:f86732d81998 | 11 | // Configuration values needed to connect to IBM IoT Cloud |
| sathipal | 0:f86732d81998 | 12 | #define QUICKSTART "quickstart" |
| sathipal | 0:f86732d81998 | 13 | |
| sathipal | 0:f86732d81998 | 14 | #define MQTT_PORT 1883 |
| sathipal | 0:f86732d81998 | 15 | #define MQTT_TLS_PORT 8883 |
| sathipal | 0:f86732d81998 | 16 | #define IBM_IOT_PORT MQTT_PORT |
| sathipal | 0:f86732d81998 | 17 | |
| sathipal | 0:f86732d81998 | 18 | #define IBM_IOT_MESSAGING ".messaging.internetofthings.ibmcloud.com" |
| sathipal | 0:f86732d81998 | 19 | #define CONNECT_TIMEOUT 1000 * 60 |
| sathipal | 0:f86732d81998 | 20 | #define MQTT_MAX_PACKET_SIZE 250 |
| sathipal | 0:f86732d81998 | 21 | |
| sathipal | 0:f86732d81998 | 22 | typedef void (*CommandHandler)(IoTF::Command &cmd); |
| sathipal | 0:f86732d81998 | 23 | |
| sathipal | 0:f86732d81998 | 24 | namespace IoTF { |
| sathipal | 0:f86732d81998 | 25 | |
| sathipal | 0:f86732d81998 | 26 | class DeviceClient |
| sathipal | 0:f86732d81998 | 27 | { |
| sathipal | 0:f86732d81998 | 28 | private: |
| sathipal | 0:f86732d81998 | 29 | char *org; |
| sathipal | 0:f86732d81998 | 30 | char *deviceType; |
| sathipal | 0:f86732d81998 | 31 | char *deviceId; |
| sathipal | 0:f86732d81998 | 32 | char *authMethod; |
| sathipal | 0:f86732d81998 | 33 | char *authToken; |
| sathipal | 0:f86732d81998 | 34 | MQTTEthernet ipstack; |
| sathipal | 0:f86732d81998 | 35 | MQTT::Client<MQTTEthernet, Countdown, MQTT_MAX_PACKET_SIZE> mqttClient; |
| sathipal | 0:f86732d81998 | 36 | |
| sathipal | 0:f86732d81998 | 37 | bool tryConnect(char *hostname, MQTTPacket_connectData &data); |
| sathipal | 0:f86732d81998 | 38 | int getConnTimeout(int attemptNumber); |
| sathipal | 0:f86732d81998 | 39 | void logData(EthernetInterface& eth, char *hostname, char *clientId); |
| sathipal | 0:f86732d81998 | 40 | int subscribeToCommands(); |
| sathipal | 1:31c93319bbd8 | 41 | char* getMac(char* buf, int buflen); |
| sathipal | 0:f86732d81998 | 42 | |
| sathipal | 0:f86732d81998 | 43 | public: |
| sathipal | 0:f86732d81998 | 44 | DeviceClient(); |
| sathipal | 0:f86732d81998 | 45 | DeviceClient(char *org, char *deviceType, char *deviceId); |
| sathipal | 0:f86732d81998 | 46 | DeviceClient(char *org, char *deviceType, char *deviceId, char *authMethod, char *authToken); |
| sathipal | 0:f86732d81998 | 47 | bool publishEvent(char *eventName, char *data, MQTT::QoS qos = MQTT::QOS0); |
| sathipal | 0:f86732d81998 | 48 | void setCommandCallback(CommandHandler callbackFunc); |
| sathipal | 1:31c93319bbd8 | 49 | char* getDeviceId(char* buf, int buflen); |
| sathipal | 0:f86732d81998 | 50 | void yield(int ms); |
| sathipal | 0:f86732d81998 | 51 | bool connect(); |
| sathipal | 0:f86732d81998 | 52 | bool disconnect(); |
| sathipal | 0:f86732d81998 | 53 | }; |
| sathipal | 0:f86732d81998 | 54 | } |
| sathipal | 0:f86732d81998 | 55 | #endif |