Rendered at 04:13:24 GMT+0000 (Coordinated Universal Time) with Cloudflare Workers.
yonatan8070 1 hours ago [-]
What do people do with these? I'm struggling to think of any use-case where someone would need a tiny FPGA in a USB port.
amelius 6 hours ago [-]
But is it fast enough to do USB 3?
If so, here's a nice and simple project idea: that board with two USB connectors and connect it to the two ends of the same cable; you send a pseudorandom bitstream down one end and verify if it comes out correctly at the other end and report the bit error rate (USB cable tester)
jedbrooke 6 hours ago [-]
looks like it only has the physical connections for USB 2. Fun fact about usb 3, it’s really a completely separate physical standard from usb 2, just designed in such a way that a single port can have BOTH usb 2.0 and 3.0 connectors in it at the same time. In theory this would allow for devices to use the full bandwidth of 3.0 + the full bandwidth of 2.0, but as far as I know no device does that.
15155 5 hours ago [-]
> In theory this would allow for devices to use the full bandwidth of 3.0 + the full bandwidth of 2.0, but as far as I know no device does that.
Not as a single device (no XHCI controllers allow this), but yes if you presented two devices to the OS (with some XHCI controllers.)
If so, here's a nice and simple project idea: that board with two USB connectors and connect it to the two ends of the same cable; you send a pseudorandom bitstream down one end and verify if it comes out correctly at the other end and report the bit error rate (USB cable tester)
Not as a single device (no XHCI controllers allow this), but yes if you presented two devices to the OS (with some XHCI controllers.)
There's a fun/interesting lesson on some creative routing for the ice40 FPGA FPGA here. Which I re-stumbled into just last week by happenstance. https://danielmangum.com/posts/spi-routing-ice40-fpga/
One of the makers Tim @mithro Ansell is pretty great. A bit quieter on the social media these days, but https://bsky.app/profile/mith.ro