Sony PS3 controller
This is the second part of a series of articles written to describe development of interface between Arduino and popular game controllers using USB Host Shield. Previous parts:
Revision 0.6 – 13th January 2010
Part 2: Develop the USB interface to the PS3 controller
1. USB Reduced Hosts
Full USB hosts such as Windows and Linux based computers can manage a large variety of different USB devices and load appropriate USB drivers for each device. There is an enumeration or discovery phase where the host gathers information on the attached USB device and uses this information for the driver selection and configuration. In small embedded applications this is not possible or required to support this variety, so the application usually only supports a few devices, often only one. This means the discovery process can be much reduced since the results are already known. This will reduce the memory required for the application by hard coding the device configuration into the application.
Though the configuration will be hard coded, we still need to initially gather the information from the device itself and other sources.
The existing device drivers mentioned above for Windows and Linux are important in our development process. The Windows drivers are usually complete, but not available in source form. Linux drivers are available in source form, though not always as complete. Device manufacturers are usually very reluctant to provide information required to build a driver or embedded application. So we rely on copying Linux code or “sniffing” Windows code to give us guidance.
Continue reading PS3 and Wiimote Game Controllers on the Arduino Host Shield: Part 2
