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Author Topic: Function F13-F24 support  (Read 13757 times)

johng

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Function F13-F24 support
« on: June 14, 2011, 12:36:20 pm »
I've designed a keyboard for my customer who have asked for some additional functions key (F22-F24) which are listed in USB_PS2_Scan_Code.pdf as standard keys. However, they don't seem to get to the PC. I'm using PassMark Software to test the key codes & their suggested that the keyboard driver may not be correct. Does anyone know what may be stopping the keys from working?

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Jan Axelson

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Re: Function F13-F24 support
« Reply #1 on: June 14, 2011, 12:44:55 pm »
Just because the keys have assigned codes doesn't mean that the OS supports it. You may need to write a filter driver to support them. A protocol analyzer will tell you if the keypress data is traveling on the bus (but getting ignored by the driver).

Jan
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