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Thank you- I finally understand! My University example was totally throwing me off, as they had Initialized both rows on PORTC throughout. It finally works- albiet, a bit buggy, but I think that's something to do with needing to debounce. Anyway, here's my code (this is called in a main...
Ok, so I'm still aboslutely stumped! I've had a go at coding something from what's been discussed, however, it's not working. Let me show you my thought process!
First of, my (what is essentially a 2x2 keypad) scanning method is to return a BYTE representation of the key pressed, which is...
I did start with Defining TRISC = 0x3; and PORTC = 0xC;, then in the "readkeypad()" method that would return the lowest nibble on PORTC, defined as simply as return PORTC & TRISC; .This has allowed me to stay within my restrictions and use RC2 and RC3 as outputs (please correct me if I'm wrong...
I'm new to PIC Microcontrollers & C programming and I've been set the task of creating my own Keypad scanning method that works exclusively on Port C (16F877A Microcontroller). Specifically, the program that uses this method only uses digits 1, 2, 4 and 5- so to be efficient, the scanner method...
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