Keypad interaction
for pic16, can anyone briefly describe what I should do if, for instance, when "1" on the keypad is pressed, I want to clear all the words on the lcd and display another line of words? I'd like to use an interrupt, but then Emami's sample code is something else which I've no idea what it's doing.
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Permalink Reply by Kenny Kim on
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his code is polling the keypad to see if something is pressed, where he says disable interrupts, you want to set the bit, you then want to make an ISR that tests to see if the keypad was pressed, if so you want to do something
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you want to see if the input from whatever port you are looking at is b'0000' (use xorwl), and hten you want to send the correct input to the lcd to clear it (I can't remember what it is, but you can take part of his code in his lcd code and turn it into a macro to do this), you then want to give his display macro a new table
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