USB Driver Programming (2)

In the previous issue of Elektor Electronics, we described how device drivers are used. Now it’s time to modify a Cypress device driver. You only need a couple of programs for this, even if you have never worked with Microsoft Visual Studios. All of the necessary steps are described in minute detail.In the Windows Device Manager, you will see all currently connected USB devices listed under ‘USB Controller’. Figure 1 shows the entries for a USB device using the Cypress IC with no EEPROM and a USB data spy for Bin-Term.Writing your own complete driver ‘from the ground up’ is almost impossible for normal mortals. Fortunately, Cypress provides the EZUSB driver not only as an installable version, but also in the form of source code.