To reduce the complexity of wiring with a keypad, the Advanced I/O Expander Example (on PIC16F15244) was used as a simple keypad controller.
Project tutorial by Robert Perkel
Control a 7-segment display with a PIC16F15244 microcontroller running as an Advanced I/O Expander.
First of a 3-part series that covers using the PIC16F15244 family of general-purpose 8-bit microcontrollers as an I/O expander.
by Robert Perkel
A device that mounts on top of a traditional keypad and transforms it into a touch-free and bluetooth controllable one.
Project tutorial by Francesco Gritti
I'm a little late to this, but did you try the Emergency Firmware Recovery in MPLAB X (Under Debug)? What version of MPLAB X are you running?
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