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Old 03-24-2008, 01:41 AM   #1
sridhar_ub
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How to detect how many bytes of scan-code are coming for a key press?


Can anybody tell me how to detect the number of bytes of scan-code are coming for a key press. For my project I have to write a piece of code, where for a key press I have to compare the scan-codes with a pre-filled array of bytes. I have to make these changes mainly in the i8042.c file. The problem is that for some keys there may be 1 scan-code or more than 1 scan-code. So in the stream of bytes coming to the driver, I have to detect the start and end of transmission of scan-code for a key.

I understand that for a key press we will get make codes and for key release we get break codes. Can anybody suggest a solution as to how I go about my problem or point me to the piece of code that distinguishes make and break codes in the kernel source code.
 
Old 03-24-2008, 03:46 AM   #2
Bruce Hill
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When you joined LQ you agreed not to double post, according to the Rules.

I am so sorry, but if you can't follow these simple rules, I don't think it would be
worth my time to enlighten you on something more complicated.
 
Old 03-24-2008, 11:50 AM   #3
jtshaw
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Please post your thread in only one forum. Posting a single thread in the most relevant forum will make it easier for members to help you and will keep the discussion in one place. This thread is being closed because it is a duplicate.

Continue this thread here.
 
Old 03-24-2008, 01:39 PM   #4
Tinkster
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closed the original since the dupe is now in the more sensible forum.
 
  


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