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Sourcecode <io/io_KeyPadScanner.vhdl>Testbench <io/io_KeyPadScanner_tb.vhdl>
This module drives a one-hot encoded column vector to read back a rows vector. By scanning column-by-column it's possible to extract the current button state of the whole keypad. The scanner uses high-active logic. The keypad size and scan frequency can be configured. The outputed signal matrix is not debounced.
Entity Declaration:
../../../src/io/io_KeyPadScanner.vhdl
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Source file: io/io_KeyPadScanner.vhdl <io/io_KeyPadScanner.vhdl>