Grabber Support

dreens

I'd like to use my grabber card. I have one in my crate, says "v1.0" on the bottom. Its right next to my Kasli, "v1.1". For some reason it doesn't appear in my device_db file though. I tried adding a line similar to what I can see on another system in my lab:

device_db["grabber0"] = {
    "type": "local",
    "module": "artiq.coredevice.grabber",
    "class": "Grabber",
    "arguments": {"channel_base": 22}
}

But I can't seem to get any grabber code to run.
I have a fairly straightforward hello world script:

        self.grabber0.setup_roi(0,1,1,5,5)
        self.core.break_realtime()

        self.grabber0.gate_roi(1)
        delay(100*ms)
        self.grabber0.gate_roi(0)
        n = [0]
        self.grabber0.input_mu(n)
        print(n)

How can I know what channel my grabber card is connected to? Can I figure this out if I open up the crate? Is there a chance I will need to recompile gateware? How can I know whether I have the gateware needed to read from my grabber?

Many thanks in advance.

sb10q

Where is that crate from?

dreens

It's one of the first ones we purchased at MITLL. I was just looking at our linux box to see what gateware I have. I can't tell which is which, but I found a repo called "sinara-systems". I can't fetch without a username and password, but it seems to have all sorts of .json crate specification files for different organizations in it. All of the crate specification files with "mitll*.json" as filename are in a directory titled "archive". All have grabbers, so I don't think lack of gateware supporting the grabber could be the problem, assuming one of those corresponds to the gateware that was first put on this crate. I don't believe it has changed.

Does that help?

dreens

There's really so many things that could be wrong, it is hard to make progress.
It looks like every channel from 0-21 is in use in the device db, so I've tried using everything from 22-27, each time re-running a call to artiq_client scan-devices, rerunning my minimal dashboard script, and then seeing if it hangs at input_mu. (it always does). I've also tried various combinations of enabling different ROIs, making sure to check the option for "Camera Link" in my Andor software, making sure to specify the same ROI's using setup_roi as are already setup in the Andor application, messing with other Andor settings.

I've seen that some of the artiq crates we have at MITLL seem to give only one channel to the grabber, while others give two. I suppose this may relate to the ability to utilize the serial control capabilities of camera linking, which I believe aren't supported by Andor anyway. I don't know which way mine is done because I don't know which gateware was ultimately installed on my crate.

sb10q

Is there no "variant: ..." sticker on your crate?
Please send a photo of your crate to helpdesk@ and we'll take a look.
You need matching hardware, gateware, and DDB, otherwise all kinds of issues can occur.

dreens

Okay, I'll send an email. I don't see such a sticker anywhere on any of the 5 crates that we have here at MITLL, must be something you started doing later on. I'm going to need some tips on updating the gateware, I'm still on ARTIQ 4 right now.