Description:
A library to control matrix keypads using AVR microcontrollers.
- The keypad pins can be configured to any pin in any port in any sequence.
- Supports 3x3, 3x4 and 4x4 keypads.
- Can perform immediate readings, which are noise-susceptible, or debounced readings using a timer interrupt.
- Functions include:
- Read
- Wait till key pressed
- Wait till key released
Functions can be used with or without debounce.
Read the bottom of "Keypad.h" to see all functions available.
- My custom I/O macros are required and are included.
Memory usage:
- Program: 9/12/16 bytes
- Keypad layout: 9/12/16 bytes (3x3, 3x4, 4x4 layout)
- Data: 10 bytes
- Noise filtering array: 10 bytes (default)
Compiler:
AVR-GCC
Optimization Level:
Optimize (-O1)
