Sending a coap request using esp32 connected to the kit

[Jakes James]

Hello everyone,

For simpilicity,assume i have a node that is connected to an esp32, that node is configured as a coap client(actually its a node that gathers coap requests from a lot of ble nodes), it forms the packets, sends it to esp32 over uart, now how do i get esp32 to send that request to, for example, the coapserver python code you supply in the info center,here http://infocenter.nordicsemi.com/index.jsp?topic=%2Fcom.nordic.infocenter.thread_zigbee.v2.0.0%2Findex.html&cp=4_2_0

Thanks in advance.

[Hung Bui]

Hi Jakes, 

Hope you will get help from others here. We (Nordic) are not very familiar with the ESP32 platform to help you on this. 

But just to clarify, which protocol you used to send packets from the coap client to esp32 via UART ? did you follow the Thread Border Router spinel protocol ? 

Or you make your own proprietary protocol on the esp32 ? 

The CoAP packet sending from ESP32 should be a normal COAP packet over UDP. I would assume these libraries should be able to do that : 

https://github.com/espressif/esp-idf/tree/master/examples/protocols

https://github.com/hirotakaster/CoAP-simple-library