Abhijit Jagtap

Keyboard int on QE128

Discussion created by Abhijit Jagtap on Dec 30, 2010
Latest reply on Dec 30, 2010 by Abhijit Jagtap

Hello

 

I am trying to write a code for QE128 which i will explain 

i have 2 keys, A & B

On pressing A , i xmit char '1' on SCI . I don't release A and until this time ,'1' is xmitted continuosly on Tx and an LED glows during this time.While i am pressing down A , if i press B w/o releasing both keys, then char '2' is xmitted and another LED glows.Upon releasing both keys,the process is terminated (LED's off and xmit is off)

For this i wrote a code invoking KBI interrupts.But i found out that after pressing B ,the A routine is serviced as well so as to get 212121... on my terminal.

Can anyone provide a valid approach of doing this?

 

Awaiting precious replies.

Thanks and regards

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