Debug raw touchio values in CircuitPython

touchio_debug_code.py

# touchio_debug_code.py -- debug raw touchio values
# 15 Oct 2024 - @todbot / Tod Kurt
# This sketch shows the raw_value and threshold value for each
# touchio TouchIn input, as well as the normal ".value" boolean
# Hopefully this will help to debug touchio circuits.

import time
import board
import touchio

# these pins are for the first 8 picotouch midi board pads,
# your board will likely use different pins
touch_pins = (
    board.GP0, board.GP1, board.GP2, board.GP3,
    board.GP4, board.GP5, board.GP6, board.GP7,
)

touch_ins = []   # holder of all the touchio objects
for pin in touch_pins:
    print("creating TouchIn for pin", pin)
    touch_in = touchio.TouchIn(pin)
    touch_ins.append(touch_in)

while True:
    # print out threshold and raw value for each pin
    for i, touch_in in enumerate(touch_ins):
        raw_value = touch_in.raw_value
        threshold = touch_in.threshold
        touched = touch_in.value  # same as "if raw_value > threshold"
        touched_str = "*" if touched else " "
        print("%4d/%4d%s " % (raw_value, threshold, touched_str), end='')
    print()
    time.sleep(0.1)