ESP32 Forum

Hello Everyone,

I am using the ESP32C3 WIFI module and the tool is Espressif IDE.

By using Access Point + UDP Server Example, I have done the UDP receiving packets in polling mode. But now I want to receive UDP packets in interrupt mode.

Please give me any suggestions for receiving UDP packets in interrupt mode.

Thanks & Regards,
D.Vineetha.

UDP packets aren't received in polling or interrupt mode. What specifically are you talking about?

I have done UDP receiving packets in polling mode by using UDP Server example which is available in ESP-IDF examples.
https://github.com/espressif/esp-idf/bl ... p_server.c

But now I want to receive UDP packets in interrupt mode for that please clarify how to enable interrupt mode for ESP32C3 in
Espressif IDE.


Thanks & Regards,
D. Vineetha.

Your question doesn't make more sense when you just repeat it.

Create a dedicated task while(1) { len = recvfrom(udpsocket, packet,...); onUdpPacket(packet,len); }.

Alternatively, let us know what you believe "interrupt mode" means and how that would relate to receiving UDP packets.

That code does not use 'polling', it is 'blocking', that is, it uses FreeRTOS primitives (in the TCP/IP stack) to put your task to sleep until the TCP/IP stack receives an UDP packet. What you want probably is a 'callback' rather than 'interrupt mode'. The sockets API does not have something like that, but the code snippet that MicroController provided would be a good workaround that performs a similar function. (But note that you may be better off trying to explain a bit more about the issue you're having, as faking a callback API may not be the best solution to your problem.)