Picocomputer
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I have a newly self-assembled system, and VGA is displaying just fine. When I start the computer with just a USB hub connected to RIA, the screen looks normal. However, when I start with a USB keyboard plugged into the hub, I get this error: *** PANIC *** The same thing happens if I hot plug the USB keyboard into the hub. I've tried two different USB keyboards, with the same results. Unfortunately I only have one hub with microUSB. It does claim to be OTG-comptable, though. I'm not sure how to troubleshoot but I would be happy to do so. I can probably set up serial if that would help, although I haven't determined yet which header pins are UART. (I assume those are exposed in the GPIO or PIX headers.) |
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Replies: 2 comments
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The Pico VGA is also a USB-to-UART and ARM debugger for the RIA if you hooked up those optional 3 SWD pins. I did a web search for "TinyUSB Data Seq Error" and found this is a known issue: hathach/tinyusb#1997 |
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I bought a microUSB to USB-A adapter and plugged my keyboard directly into it, and no more error. Previously I had plugged into the RIA a microUSB to USB-A hub, into which I plugged my keyboard. Instead, I've tried plugging a USB-A hub into my microUSB adapter, and am no longer receiving an error with this configuration either. So I guess my suggestion to anyone running into this issue might be to try a different USB hub. |
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I bought a microUSB to USB-A adapter and plugged my keyboard directly into it, and no more error. Previously I had plugged into the RIA a microUSB to USB-A hub, into which I plugged my keyboard. Instead, I've tried plugging a USB-A hub into my microUSB adapter, and am no longer receiving an error with this configuration either. So I guess my suggestion to anyone running into this issue might be to try a different USB hub.