Someone could usefully write a Free Software version. A company called AnchorChips now owned by Cypress came out with an innovative and useful product a while ago: Their Linux support builds on the common kernel and user mode USB infrastructure, which you can read about elsewhere on this site. When supported directly by the Linux kernel, these devices appear just like any other kind of serial port. That means computers need to download firmware to such devices before they’re used.
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EZ USB on Linux
Plugging EZ-USB devices into a Linux system runs device-specific scripts, which can download the appropriate firmware hexfile. Devices that also have off-chip memory use the ez-usb fx2 stage loader mode. At this writing, all that firmware is statically linked into the appropriate mini-driver. Plus, it’s easier to distribute updated firmware if you don’t need to upgrade a kernel driver to rz-usb that.
The Linux system will typically be much more powerful, since it has at least a bit processor ez-usb fx2 richer ez-usb fx2 environment.
Someone could usefully write a Free Software version. Ez-usb fx2 usbstress software http: There’s a project working on Ez-usb fx2 firmware: This web page is ea-usb as a community resource, with cross links to related projects as well as hosting some Linux-focused efforts directly. You could run simple tests that transferred control, bulk, or isochronous traffic.
Kernel ez-usb fx2 drivers can do the downloads, but then the firmware just locks down kernel memory. A number ez-usb fx2 them need to download firmware before they are usable. For in-the-field product updates, or for developers, you can use a specialized second stage loader to write the boot EEPROMs.
Device firmware just processes interrupts, fills buffers, and tells the hardware to do its thing.
One suitable loader is available from Cypress. It can support all USB endpoints 30 plus control.
A company called AnchorChips now owned by Cypress came out with ez-usb fx2 innovative and useful product a while ago: Their Linux support builds on the common ez-usb fx2 and user mode USB infrastructure, which you can read about elsewhere on this site. This software is still usable on 2. That means computers need to download firmware to such devices before they’re used. The FX2 doesn’t support quite as many endpoints six plus controlbut fz2 does handle multibuffered high speed transfers ez-usb fx2 hardware.
For end user scenarios, it hooks up easily to hotplug utilities.
When supported directly by the Linux kernel, these devices appear just like any other kind of serial port. USB devices typically have to work ez-usb fx2 many operating systems. Firmware source is available. E-usb Diehl has provided EZ-USB firmware implementing simple device protocols that are ez-usb fx2 useful when used with usbtest software from Linux-USB hosts, to help verify correct operation of the host and isolate bugs.