Search found 20 matches

by Machdisk
Thu May 16, 2019 1:35 pm
Forum: XMOS Devices
Topic: Multichannel USB failing on Mac when unplug/replug
Replies: 12
Views: 3124

Re: Multichannel USB failing on Mac when unplug/replug

Got to the bottom of the issue. Seems there was a bug in the MIDI code that was causing the USB to crash. All is well now but thanks for the help.
by Machdisk
Mon May 13, 2019 10:04 am
Forum: XMOS Devices
Topic: Multichannel USB failing on Mac when unplug/replug
Replies: 12
Views: 3124

Re: Multichannel USB failing on Mac when unplug/replug

That one works every time. 20 redocks on each USB port on both Mac and Windows without any failures.
by Machdisk
Fri May 10, 2019 3:03 pm
Forum: XMOS Devices
Topic: Multichannel USB failing on Mac when unplug/replug
Replies: 12
Views: 3124

Re: Multichannel USB failing on Mac when unplug/replug

OK, bit of an update, I tried with a new build that changes the portmap to do with a couple of other ports on tile 2 which handle ADAT inputs and outputs (USB is on tile 0) and suddenly the USB crashing behaviour is much worse. It now happens on both MacOS and on windows and happens with every disco...
by Machdisk
Fri May 10, 2019 2:30 pm
Forum: XMOS Devices
Topic: Multichannel USB failing on Mac when unplug/replug
Replies: 12
Views: 3124

Re: Multichannel USB failing on Mac when unplug/replug

On another board it has the same issue on both Windows and mac devices
by Machdisk
Thu May 09, 2019 2:12 pm
Forum: XMOS Devices
Topic: Multichannel USB failing on Mac when unplug/replug
Replies: 12
Views: 3124

Re: Multichannel USB failing on Mac when unplug/replug

Mostly seems to behave itself on windows PC. On Mac (multiple different macs) it's a guarantee that it will fail. Connect, pass audio, disconnect, reconnect and not recognised. Windows will work for hundreds of cycles. Though it does occasionally seem to get in a similar state where it isn't recogni...
by Machdisk
Wed May 08, 2019 5:01 pm
Forum: XMOS Devices
Topic: Multichannel USB failing on Mac when unplug/replug
Replies: 12
Views: 3124

Re: Multichannel USB failing on Mac when unplug/replug

Yep, Self powered is defined as 1
by Machdisk
Wed May 08, 2019 4:13 pm
Forum: XMOS Devices
Topic: Multichannel USB failing on Mac when unplug/replug
Replies: 12
Views: 3124

Re: Multichannel USB failing on Mac when unplug/replug

Sure no problem, see the attached. Also the device is self powered and works stably for days of audio streaming if left alone. It only falls over when we disconnect and reconnect.
by Machdisk
Wed May 08, 2019 9:36 am
Forum: XMOS Devices
Topic: Multichannel USB failing on Mac when unplug/replug
Replies: 12
Views: 3124

Multichannel USB failing on Mac when unplug/replug

Hello All, We are seeing an odd crash occurring when we un plug and replug the USB of our XU224 board into a device running MacOS. This only occurs when we have passed some audio through it first though. To replicate the fault: 1) Plug in the Xu224 USB 2) Pass audio via the core audio asio driver 3)...
by Machdisk
Sun Jan 20, 2019 3:40 pm
Forum: XMOS Devices
Topic: USB and internal xlinks failing over time
Replies: 23
Views: 19427

Re: USB and internal xlinks failing over time

I do not cycle power when reflashing the IP and it can still fail even when all the power rails are sitting steady at operating levels. Running the circuit from a 5V or 12V medical grade supply I have available for testing makes no difference. I attempted to remove everything from the board except f...
by Machdisk
Thu Jan 17, 2019 1:34 am
Forum: XMOS Devices
Topic: USB and internal xlinks failing over time
Replies: 23
Views: 19427

Re: USB and internal xlinks failing over time

XMOS xtag 3 programmer. Definitely the same ground potential (All on the same ground plane). I have three identical xtag programmers and the all behave the same. I can program to the flash chip on the board and the unit will boot from the flash (Which is external QSPI yes) and then behave the same w...