CYPRESS EZUSB FX2 USB DRIVER

Plugging EZ-USB devices into a Linux system runs device-specific scripts, which can download the appropriate firmware hexfile. USB devices typically have to work with many operating systems. This web page is designed as a community resource, with cross links to related projects as well as hosting some Linux-focused efforts directly. There’s a project working on HID firmware: A number of them need to download firmware before they are usable. At this writing, all that firmware is statically linked into the appropriate mini-driver.

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Cypress EZ-USB FX2 (CY7C68XXX)

This software is still usable on 2. Plugging EZ-USB devices into a Linux system runs device-specific scripts, which can download the appropriate firmware hexfile.

A company called AnchorChips now owned by Cypress came out with an innovative and useful product a while ago: It can support all USB endpoints 30 plus control.

There’s a project working on HID firmware: Their Linux support builds on the common kernel and user ueb USB infrastructure, which you can read about elsewhere on this site. Kernel device drivers can do the downloads, but then the firmware just locks down kernel memory. Devices ctpress also have off-chip memory use the two stage loader mode. Someone could usefully write a Free Software version.

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Cypress EZ-USB FX2 (CY7C68XXX)

Firmware source is available. This web page is designed as a community resource, with cross links to related projects as well as hosting some Linux-focused efforts directly.

That means computers need to download firmware to such devices before they’re used. USB devices typically have to work with many operating systems.

The usbstress software http: For end user scenarios, it hooks up easily to hotplug utilities. At this writing, all that firmware is statically linked into the appropriate mini-driver. When supported directly by the Linux kernel, these devices appear just like any other kind of serial port.

Plus, it’s easier to distribute updated firmware if you don’t need to upgrade a kernel driver to do that. A number of them need to download firmware before they are usable.

The Linux system will typically be much more powerful, since it uab at least a bit processor and richer software environment. Device firmware just processes interrupts, fills buffers, and tells the hardware to do its thing.

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Cypress EZ-USB FX2 – LinuxTVWiki

For in-the-field product updates, or for developers, you can use a specialized second stage loader to write the boot EEPROMs. One suitable loader is available from Cypress. The FX2 doesn’t support quite as many endpoints six plus controlbut it does handle multibuffered high speed transfers in hardware.

You could run simple tests that transferred control, bulk, or isochronous traffic. Martin Diehl has provided EZ-USB cypreds implementing simple device protocols that are very useful when used with usbtest software from Linux-USB hosts, to help verify correct operation of the host and isolate bugs.