A tiny CoAP server for microcontrollers. See http://tools.ietf.org/html/rfc7252
Endpoint handlers are defined in endpoints.c
- Arduino demo (Mega + Ethernet shield, LED + 220R on pin 6, PUT "0" or "1" to /light)
- POSIX (OS X/Linux) demo
- GET/PUT/POST
- No retries
- Piggybacked ACK only
For linux/OSX
make
./microcoap
For Arduino
copy libraries and microcoap-example directories to the Arduino IDE sketches folder (or just change the sketches folder to the microcoap dir)
open: File -> sketches folder -> microcoap-example
Arduino LED pin defined at microcoap-example\connections.h and set to 13 (default embedded led for some Arduino boards)
To test, use libcoap
./coap-client -v 100 -m get coap://127.0.0.1/.well-known/core
./coap-client -v 100 -m get coap://127.0.0.1/light
./coap-client -e "1" -m put coap://127.0.0.1/light
./coap-client -e "0" -m put coap://127.0.0.1/light
Or use copper (Firefox plugin)
coap://127.0.0.1
Use microcoap-example dir and edit it or prepare similar folder.
Edit endpoints.h and endpoints.c similar to light entry.
Arduino, by default, has a UDP transmit buffer of 24 bytes. This is too small for some endpoints and will result in an error.