F3 also comes with a command line utility named f3probe, which is recommended for testing USB flash drives of large capacity due to its fast test speed. Or at least borrow the use of a system with such hardware, if you don’t want to own it yourself. You can often expect other people in the Linux community to help with those issues, if your software is clean and portable. For example, both the SCSI and driver model code needed significant hot-unplug bugfixes. Most Linux PCs should work just fine as the test driver.

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Post Your Answer Discard By clicking “Post Your Answer”, you acknowledge that you have read our updated terms of serviceprivacy policy and cookie policyand that your continued use of the website is subject to these policies. The peripheral can use GPL’d firmware written by Martin Diehl, instead of whatever they might normally be using. Linuc VBUS switching bugs are usbtet to have on dual-role boards, so you should test this.

Linux USB Test Mode | wowothink

USB device drivers should all support selective suspend and resume by ensuring that drivers don’t issue URBs to suspended devices. UTSL; current versions add at least control message tests covering many “chapter 9” spec behaviors, and usbtext testing and isochronous transfer support. In fact, testing the hardware-specific controller driver relies on gadget zero and host side tests like these.

Test 14 can’t use linuc default “testusb” parameters; you’ll need to drive it using parameters such as those in the test script. The scatterlist tests can sustain peak transfer rates for some time, and all the test have modes where they can issue short writes. You can disable their “official” device drivers and then use them for testing.

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It issues many back-to-back control transfers, and induces faults such as protocol stalls; so it’s exposed races, fault handling bugs, and various annoying combinations of the two. The “testusb” program gives you access ljnux two basic kinds of “chapter 9” tests.

Once the controller drivers are working, you can test the USB Device Drivers and gadget drivers which expose such functionality to applications and users. There are several levels of testing that a Linux host can perform to your peripheral.

Test with all the different host adapter configuration.

Otherwise you’ll need some kernel device driver. Some hardware has difficulty halting IN endpoints, so you may need to skip this test. On newer hardware with Usgtest 2.

You can test just that portion of the OTG stack, too. These don’t work with all packet sizes, so you’ll need to set them up by hand, but they are good ways to help catch problems like accidentally duplicated packets or buffers. Run testusb like this:.

module – Running test with “usbtest” on Ubuntu – Stack Overflow

The collection of supported hardware uusbtest beginning to grow. Gadget drivers are written to a hardware-neutral API, which can support both generic class style functionality or vendor-specific functionality. Use those to cover many different traffic patterns. If in doubt, try using an OHCI controller on your Linux host; that’s been used most often for such testing so it’s least likely to hide problems.

Such tests help serve as driver regression tests, so they’re good to have as arrows in the test case quiver of a Linux distributor. As with Gadget Zero, once this works for short periods you should ensure that it works reliably for days at a time.

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That document is available from www.

Linux USB Test Mode

If the peripheral is not capable of high speed operation, you can connect it directly to the USB 2. Maybe you can help make these work with “usbtest” or related code. Be sure you set it up correctly ; you may want to use the debug mode, so you can use it in a “removable media” mode or tell it not to require endpoint halts. You want to be sure to find and fix the kind of bugs these options uncover.

Run “testusb -t2”, “testusb -t4”, “testusb -t6”, and “testusb -t8” to test bulk IN transfers. The “bulk sink” and “bulk source” functionality is also supported by most peripheral firmware development kits, as is “iso sink” and “iso source” for hardware that supports isochronous transfers.

What did the tests do?

Then run the following command. You should be able to run it for weeks and never see an error. Leave them running all week while you do other things with your boards, too; you might turn up something interesting, like an unexpected interaction between different SOC components.