Hector Martin

Do we want to do this / what would it look like? We currently have I²C testpoints. Those could easily be replaced with a 3x2.54mm header (I2C+GND), but I think...

There's also a spot centered on the board, to the right of the TCAs, where this would fit vertically and not screw up the wave soldering more.

Yeah, we'd need supplies to make this actually useful (and depending on what the user is doing, that might mean 3V3 or VioA or VioB or even also 5V)

Just for reference since I already tried it, this is what it would look like with just SDA/SCL/GND (modulo fixing the silkscreen): 

Strongly agree given what I've seen recently. Exposed I²C needs to be behind an isolator/mux. That said, revD needs a mux anyway. I think it's feasible there, but it's not...

Yeah, I was thinking about that too. This is only going to work if the mux has a reset line we can control, so we can unwedge it if a...

Yes, that's a dealbreaker for revD. It's going to depend on how that road goes when we get there. I think there's still a good chance we decide we need...

@electroniceel So here's a proposal. We can't really come up with a "nice" official way of doing what you want on revC, but what we can do is make it...

Can't we just make sure we don't reload firmware on Glasgows already exposing this interface? Sure, ones running old firmware would be reloaded... but that sounds like a problem nobody...

But once you're running an applet with up to date software, like OP, it'll already be running the latest firmware, right? If this happened to them it's because their existing...