Simple test

Ensure your device works with this simple test.

examples/mcp23017_scanner_simpletest.py

# SPDX-FileCopyrightText: Copyright (c) 2022 Neradoc
#
# SPDX-License-Identifier: Unlicense

import board
from supervisor import ticks_ms
from adafruit_mcp230xx.mcp23017 import MCP23017
from mcp23017_scanner import McpMatrixScanner

# MCP23017 port A pins for columns
COLUMNS = [0, 1, 2, 3, 4]
# MCP23017 port B pins for rows
ROWS = [0, 1, 2, 3, 4, 5]

mcp = MCP23017(board.I2C())
scanner = McpMatrixScanner(mcp, ROWS, COLUMNS, irq=board.D5)  # irq is optional

while True:
    t0 = ticks_ms()
    scanner.update()
    while event := scanner.events.get():
        key = scanner.key_number_to_row_column(event.key_number)
        if event.pressed:
            print(f"Key pressed : {key}")
        if event.released:
            print(f"Key released: {key}")

    # flood print the milliseconds passed:
    # print(ticks_ms() - t0)