Timeline for USB device not recognized
Current License: CC BY-SA 3.0
14 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| May 5, 2017 at 21:38 | history | edited | Legen Diary | CC BY-SA 3.0 |
added 267 characters in body
|
| Apr 27, 2017 at 6:20 | answer | added | Jack Creasey | timeline score: 1 | |
| Apr 27, 2017 at 0:27 | answer | added | neonzeon | timeline score: 0 | |
| Apr 27, 2017 at 0:10 | comment | added | Chris Stratton | It would be good if you could try the same code on known good eval board. Also rule out the obvious - is your speed detection pullup on the correct line? Have you tried another host? Have you tried it both with and without a hub intervening? Consider USB packet monitoring software - might not work, but typically free and worth a try. | |
| Apr 27, 2017 at 0:01 | answer | added | Ale..chenski | timeline score: 0 | |
| Apr 26, 2017 at 17:10 | history | edited | Legen Diary | CC BY-SA 3.0 |
added 213 characters in body
|
| Apr 26, 2017 at 16:06 | comment | added | uint128_t | After a closer look at your pictures, I second FRob's comment: USB signalling should be 0V-3.6V max for LS/FS. Something doesn't look right. Use your scope's measurement functions to give us a more accurate idea of the min/max voltages. | |
| Apr 26, 2017 at 16:06 | comment | added | Legen Diary | @CL. these waveforms were generated with a default project. specifically the USB HID Code example. I ran it with default configuration, and powered the device with 5V. | |
| Apr 26, 2017 at 16:04 | comment | added | Legen Diary | @FRob that's what it looks like. Could that be a worthwhile point of debugging? | |
| Apr 26, 2017 at 16:03 | comment | added | Legen Diary | @uint128_t I haven't tried on *nix. Could I create a virtual machine and pass the usb through that way, or would I need a dedicated box? | |
| Apr 26, 2017 at 7:09 | comment | added | CL. | This is likely to be a problem with your firmware. Try to use one of the examples without any changes. Show what Linux writes to the system log. | |
| Apr 26, 2017 at 1:33 | comment | added | FRob | Is that really ~4V on the data lines? | |
| Apr 26, 2017 at 0:35 | comment | added | uint128_t | Does it work on *nix? | |
| Apr 25, 2017 at 23:12 | history | asked | Legen Diary | CC BY-SA 3.0 |