Support for the e-link32

[probe-rs]

Support for the e-link32

[therealprof]

https://matrix.to/#/!BHcierreUuwCMxVqOf:matrix.org?via=matrix.org&via=tchncs.de&via=x0f.org

@Yatekii Don't have we pointers to matrix on the homepage?

[therealprof]

It's quite possible that e-link is just a clone of something like STLink with a different sticker slapped on.

[hargoniX]

Turns out that in order to read device strings under Fedora you need sudo because of the default SELinux limitations it provides, if i run it with that it reads the string correctly and detects it as a CMSIS-DAP probe, thanks for your help!

[Yatekii]

It is unlinkely that any of the current maintainers will find time to implement this relatively unknown probe. It is hard enough to handle the three probes we have already :)

If you would like to invest the time and implement a driver I am more than willing to assist you with guidance. The matrix channel is a good place to ask more hands on questions.

Basically you need to implement two traits to make your probe work.
It's for one the DebugProbe trait which is the generic probe control trait and DAPAccess which is the trait that implements the ARM debug interface (DAP).

We would need to put this into the docs somewhere.

Why don't you wanna use a CMSIS-DAP based probe or even an ST-Link/J-Link? They should work with any ARM core. And as I can see on the ARM page there are CMSIS-PACKs for Holtek chips, so I assume that should work :)

[hargoniX]

It's just that on the dev boards they provide like for example this one there is one of these elink32 probes integrated so I thought it might be nice if you could just use the ones you get when buying the board?

Edit: Also, may I ask which matrix channel/how to get there? Never used matrix before I'm afraid.

[Yatekii]

We do have pointers, also in the readme. Maybe it's not obvius enough? I wanted to add some stuff to the webpage anyways.

[Tiwalun]

You could try capturing the USB communication using Wireshark, then it would be easy to check if it's just a clone of a STLink.

[Yatekii]

It is actually a CMSIS-DAP probe. We chatted and figured that. He is trying to make it work now :)

[Yatekii]

Hurray glad we were able to resolve this so quickly :)