Could someone help me with a project KL25z microcontroller???
The problem I have is that I have no idea how to implement a 4x4 matrix keypad.
If anyone has a project that has implemented a keyboard in KL25z could share?
Thanks for your time
There are some extra details her:http://www.utasker.com/docs/uTasker/uTaskerKeypad.PDF
I do not share projects, they are all proprietary, buy I can give you an "how to implement a 4x4 matrix keypad"
for debouncing purposes you do this in a timer ISR (10 ms. is usually good)
pull all columns high
pull column 1 low, if any row low, you have your key
pull column 1 high
repeat from a* for columns 2 3 and 4
Have these been helpful suggestions? Please let us know!
Yes sorry you are right, the information was very useful.
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