Experimental Physics and
Industrial Control System

Hey Ralph,

yeah you are right, if I had to implement it myself I would go for UDP just like we do on our FPGAs.

But Espressif ships its own version of the Lightweight TCP/IP Stack so for me using TCP is just one line.

A common usage of those chips seems to be running a webserver (http(s)) on the chip to access data and control from the outside (at least this was a common thing in most example applications I had a look at)

Cheers,
Florian

On Wed, 31 Aug 2022 at 09:50, Florian Feldbauer via Tech-talk <tech-talk at aps.anl.gov> wrote:

Btw Eric, why do you think UDP would be more appropriate than TCP?

While not being Eric, I would argue that UDP is much simpler. Fire-and-forget instead of connection handling, buffering, re-transmitting, ...

For embedded applications on a limited OS or without OS (think FPGA et al.) that don't have huge amounts of data, periodically sending a UDP message to a configurable address/port is about the most simple and robust thing you can do.

Cheers,
~Ralph

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Dr. Florian Feldbauer
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References:

EPICS on ESP32 Florian Feldbauer via Tech-talk

Re: EPICS on ESP32 Eric Norum via Tech-talk

Re: EPICS on ESP32 Florian Feldbauer via Tech-talk

Re: EPICS on ESP32 Ralph Lange via Tech-talk

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