EV2400: USB reset fail

Patrik Bachan

Part Number: EV2400
Other Parts Discussed in Thread: BQSTUDIO

Hello,

I've tried to use EV2400 on my linux machine via Windows in Virtualbox. It seems like the EV2400 can't handle USB reset and dies, until being physically reconnected.

[26883.579055] usb 1-1.2: new full-speed USB device number 58 using ehci-pci
[26883.680096] usb 1-1.2: New USB device found, idVendor=0451, idProduct=0037, bcdDevice= 0.12
[26883.680100] usb 1-1.2: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[26883.680102] usb 1-1.2: Product: EV2400
[26883.680104] usb 1-1.2: Manufacturer: Texas Instruments
[26883.680105] usb 1-1.2: SerialNumber: F7BA1B5108002500
[26883.682966] hid-generic 0003:0451:0037.0021: hiddev2,hidraw5: USB HID v1.01 Device [Texas Instruments EV2400] on usb-0000:00:1a.0-1.2/input0

Here, Virtualbox requested revice reset...

[26906.388492] usb 1-1.2: reset full-speed USB device number 58 using ehci-pci
[26906.461812] usb 1-1.2: device descriptor read/64, error -32
[26906.641826] usb 1-1.2: device descriptor read/64, error -32
[26906.821794] usb 1-1.2: reset full-speed USB device number 58 using ehci-pci
[26906.898502] usb 1-1.2: device descriptor read/64, error -32
[26907.078457] usb 1-1.2: device descriptor read/64, error -32
[26907.261803] usb 1-1.2: reset full-speed USB device number 58 using ehci-pci
[26907.678445] usb 1-1.2: device not accepting address 58, error -32
[26907.751761] usb 1-1.2: reset full-speed USB device number 58 using ehci-pci
[26908.168447] usb 1-1.2: device not accepting address 58, error -32
[26908.169620] usb 1-1.2: USB disconnect, device number 58
[26908.241777] usb 1-1.2: new full-speed USB device number 59 using ehci-pci
[26908.315081] usb 1-1.2: device descriptor read/64, error -32
[26908.495075] usb 1-1.2: device descriptor read/64, error -32
[26908.675085] usb 1-1.2: new full-speed USB device number 60 using ehci-pci
[26908.748449] usb 1-1.2: device descriptor read/64, error -32
[26908.931741] usb 1-1.2: device descriptor read/64, error -32
[26909.038749] usb 1-1-port2: attempt power cycle
[26909.635078] usb 1-1.2: new full-speed USB device number 61 using ehci-pci
[26910.048403] usb 1-1.2: device not accepting address 61, error -32
[26910.121744] usb 1-1.2: new full-speed USB device number 62 using ehci-pci
[26910.535070] usb 1-1.2: device not accepting address 62, error -32
[26910.535449] usb 1-1-port2: unable to enumerate USB device

Same thing happens, when I Try to reset device manually. Other USB devices work without problems even with Virtualbox.

So, it boils down to some USB implementation bug in EV2400.

Same problem reported on Virtualbox forums. Anybody else encountered similar problems?

over 5 years ago

0 Kang Kang over 5 years ago

TI__Mastermind 24870 points

Hello Patrik,

We do not recommend using virtual box, please use it in a normal OS environment such as Win 7 or Win 10.

0 Patrik Bachan over 5 years ago in reply to Kang Kang

Prodigy 100 points

Thank you for reply,

Unfortunately, that is not an option for me. I am aware that, this is not supported setup. This thread has more of a bug report nature. EV2400 does not handle reset request from USB host properly and locks up. It is just luck, that your testing environment does not issue this command (more than once?) and everything seems to work properly.

0 Kang Kang over 5 years ago in reply to Patrik Bachan

TI__Mastermind 24870 points

Hello Patrik,

The EV2400 is part of our standard tool chain, we just don't use it in a Virtual box environment. The standard ti tool chains will try to communicate with the USB HID driver and we can send multiple packets of I2C. I do not think it is a "bug".

0 Patrik Bachan over 5 years ago in reply to Kang Kang

Prodigy 100 points

Hello Kang,

Well, let's forget about VirtualBox for this moment. Problem is, EV2400 does not handle USB reset commands from host. To be specific, it can handle one reset when device is enumerated. If host tries to reset EV2400 USB anytime later, whole device locks up until power cycle is done or reset button is pressed. In USB specification, (usb_20.pdf in zip archive) there is nice state machine diagram showing, that device reacts to reset request by transitioning into default state from almost any state. (section 9.1.1). Thus, EV2400 USB implementation is broken. It would be nice to have it fixed. As a bonus, EV2400 would start working with windows in VirtualBox.

0 Kang Kang over 5 years ago in reply to Patrik Bachan

TI__Mastermind 24870 points

Hello Patrik,

Okay, I see what you mean.

Let me check with our tools team and get back to you on this one.

Also, is it possible to get the version of VirtualBox you are using? We would like to see if we can replicate in Dallas side.

0 Patrik Bachan over 5 years ago in reply to Kang Kang

Prodigy 100 points

Hello Kang,

my VirtualBox version: 6.1.0 r135406

VBox might behave differently on Windows (host OS), you may not encounter same problem.

In Linux, it is possible to request USB device reset (and replicate problem without Vbox) eg. using this code, I don't know how to the same thing in Windows.

0 Kang Kang over 5 years ago in reply to Patrik Bachan

TI__Mastermind 24870 points

Hello Patrik,

Can you also let me know what version of EV2400 you are using? Is it v0.20 or v0.28? You may need to install bqStudio on a Windows OS to check this.

0 Patrik Bachan over 5 years ago in reply to Kang Kang

Prodigy 100 points

It's version is 0.18. (bought ~2 months ago). I guess, I should do FW update before further investigation. Please confirm. If so, I'll be able to do the FW update and test it at Wednesday.

0 Kang Kang over 5 years ago in reply to Patrik Bachan

TI__Mastermind 24870 points

Hello Patrik,

Try to upgrade to the latest v0.28: http://www.ti.com/tool/EV2400

I was told that they made some changes to the v0.28 FW for USB handling. I'm hoping that will work, if not, then I will continue the investigation.

Power management

Power management forum

EV2400: USB reset fail