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![Example: Sending an SMS
int main()
{
unsigned char char1[10];
unsigned char char_buf[8]="AT+CSQn";
// unsigned char sms_buf[20] = "AT+CMGS="xxxxxxxxx";
int wc_fd;
sms.send(
/********* Init of serial port ************/
wc_fd = init_wc(wc_fd);
'+33612345678’,
sleep(3);
//writing to serial port 'My SMS’
)
write(wc_fd,char_buf,sizeof(char_buf));
usleep(40000);
//reading from serial port
read(wc_fd,char1,sizeof(char1));
sleep(2);
close(wc_fd);
return 0;
} // end of main
// initialization of serial port
struct termios options;
ttys5_fd = open("/dev/ttyS5", O_RDWR );
if (ttys5_fd < 0)](https://image.slidesharecdn.com/usingeclipseandluafortheinternetofthings-googleplex-121219152306-phpapp01/85/Using-Eclipse-and-Lua-for-the-Internet-of-Things-EclipseDay-Googleplex-2012-12-320.jpg)
Uploaded byBenjamin Cabé
Using Eclipse and Lua for the Internet of Things - EclipseDay Googleplex 2012
Benjamin Cabé gave a presentation on using Eclipse and Lua for Internet of Things (IoT) applications. He discussed three Eclipse projects - a framework for embedded programming using Lua, the MQTT messaging protocol, and Mihini, an application framework for machine-to-machine applications. He demonstrated developing a greenhouse monitoring application using these tools on a Raspberry Pi to collect sensor data via Modbus and publish to an MQTT broker, with a mobile app to view data and control actuators. The talk promoted these open source Eclipse projects as providing simple and portable solutions for developing IoT applications.
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Using Eclipse and Lua for the Internet of Things - EclipseDay Googleplex 2012
- 1. Using Eclipse & Lua forthe Internet of Things EclipseDay Googleplex Dec. 12th, 2012 Benjamin Cabé bcabe@sierrawireless.com
- 2. Who I am • Benjamin Cabé • Open Source M2M Evangelist at Sierra Wireless • Long-time Eclipse lover
- 3. M2M? IoT? Technology thatsupports wired or wireless communication between devices
- 8. Smart Pill Box Near field Patient Heartbeat Sensor Medical Services Gateway Clinical Trial Weight Internet Scale of Things Doctor Blood Pressure Blood Sugar
- 10.
- 11. M2M embedded programming • low-level C • read sensor values • memory • control actuators management • consolidate data • multithreaded programming • communicate
- 12. Example: Sending anSMS int main() { unsigned char char1[10]; unsigned char char_buf[8]="AT+CSQn"; // unsigned char sms_buf[20] = "AT+CMGS="xxxxxxxxx"; int wc_fd; sms.send( /********* Init of serial port ************/ wc_fd = init_wc(wc_fd); '+33612345678’, sleep(3); //writing to serial port 'My SMS’ ) write(wc_fd,char_buf,sizeof(char_buf)); usleep(40000); //reading from serial port read(wc_fd,char1,sizeof(char1)); sleep(2); close(wc_fd); return 0; } // end of main // initialization of serial port struct termios options; ttys5_fd = open("/dev/ttyS5", O_RDWR ); if (ttys5_fd < 0)
- 13.
- 14. What is Lua? • High-level programming language • Scripting • Simple • Extensible • Portable
- 15. Extensible by design • Small – Trivial syntax and reduced keyword set • Simple but not stupid – Simple enough for new users, powerful enough for advanced users (first-class functions, garbage collection, closures, tail calls, coercion, coroutines, metatables) • Lua core is tiny – Compiled size is ~150kB – Lua uses libraries for its extensions
- 16. Lua vs. otherhigh-level languages • Same core features as Python, Ruby, Javascript • Better concurrency management – Built-in – doesn’t rely on the OS • Cutting-edge execution technology & performances
- 17. Lua vs. otherhigh-level languages • Restricted set of libraries – Stay simple, the developer brings his own • Outstanding Lua/C integration – Performance – Legacy
- 18. Lua for embeddedand M2M? • High-level languages usually trade hardware resources for development & maintenance resources Lua allows to reconcile high-level languages accomplishments with embedded constraints
- 19. You need anIDE! • Project structure • Syntax coloring • Content assist • Code navigation • Code formatting June 2012: first release (0.8) Dec. 2012: 0.9 release • Documentation June 2013: graduate w/ Kepler • Code templates 30,000+ installations already! • Debugger • Remote development
- 20. Using Koneki LDTfor remote Lua development DEMO
- 21. 101 • http://www.eclipse.org/koneki/ldt • Downloadstandalone IDE • Or install in existing Eclipse – from Juno repository – from nightly/milestones repositories • Execution environments on Koneki wiki – http://goo.gl/f6T80 • Contact the team – http://eclipse.org/forums/eclipse.koneki
- 22.
- 23. • Messaging protocol • Low-bandwidth / Low-power • Payload agnostic • Adjustable QoS • Large ecosystem
- 24. (optional) bridge broker broker topic/# topic/subtopic keepalive publish last will & testament subscribe username/password
- 25. 101 • http://eclipse.org/paho/ • EclipsePaho delivers clients for MQTT in C and Java – http://eclipse.org/paho/download.php • Lua client available soon – https://github.com/geekscape/mqtt_lua • MQTT view in Eclipse – http://git.eclipse.org/c/paho/org.eclipse.paho.esf.git/ • Free broker hosted at Eclipse: m2m.eclipse.org • Contact the team – paho-dev mailing-list
- 26. Lua VM +MQTT client to go?
- 27. Application framework forM2M • Set of libraries providing building blocks to develop M2M applications: – Serial and I/O management, – Networking (FTP, HTTP, e-mail, …), – GPS, – Cryptography, – Modbus, – Local storage – etc. http://www.eclipse.org/mihini
- 28. Smart agent forM2M • M2M data queues • Network bearers • Device management • Application container • Application configuration http://www.eclipse.org/mihini
- 29.
- 30. 101 • http://www.eclipse.org/proposals/ technology.mihini • http://eclipse.org/mihini • Code will be available (very) soon – Initial contribution planned for Q1
- 31.
- 32. A very commonuse case • Greenhouse business – Connect gardening equipment – Remote monitoring of sensors – Remote control • M2M Gateway not selected yet, neither is the rest of the equipment (PLCs)
- 33. m2m.eclipse.org MQTT broker Raspberry Pi Mobile phone Modbus RTU humidity temperature illuminance light ON/OFF
- 34. Two Lua applications Embedded Mobile Corona SDK – Uses Modbus library to – Subscribes to MQTT communicate w/ Arduino messages – Collects sensor data/ – Displays sensor data controls actuators with a fancy UI – Publishes MQTT messages – Publish command to – Subscribe to commands switch on/off the light
- 35. M2M Developer Kit • Actual hardware early in the dev. process is key Affordable* Simple* Industrial* • http://wiki.eclipse.org/Mihini/Developer_Kit • Arduino code & schematics will be available soon
- 36. Telco* M2M server Billing* etc…* Rugged wireless Mobile phones gateways Modbus Web applications IT applications control sensors & actuators …
- 37. Wrapping up • Developingan M2M app with Mihini is simple – Demo app written in a couple of hours • Mihini apps are portable • Mihini itself is easily portable – make install ! • Koneki provides support for editing, debugging and deploying M2M apps
- 38.
- 39.