neotrellism4/examples/neotrellism4_multitrellis_simpletest.py

import time

from board import SCL, SDA
import busio
from adafruit_neotrellis.neotrellis import NeoTrellis
from adafruit_neotrellis.multitrellis import MultiTrellis
from neotrellism4 import NeoTrellisM4

#create the i2c object for the trellis
I2C = busio.I2C(SCL, SDA)

"""create the trellis. This is for a 2x2 array of TrellisM4 (first row) with
2 Neotrellis (second row).

 [ NeoM4_left | NeoM4_right ]
  neotrellis0 | neotrellis1
"""

trellim4_left = NeoTrellisM4()
trellim4_right = NeoTrellisM4(left_part=trellim4_left)
trelli = [
    [trellim4_left, trellim4_right],
    [NeoTrellis(I2C, False, addr=0x2F), NeoTrellis(I2C, False, addr=0x2E)]
    ]

trellis = MultiTrellis(trelli)

#some color definitions
OFF = (0, 0, 0)
RED = (127, 0, 0)
YELLOW = (127, 75, 0)
GREEN = (0, 127, 0)
CYAN = (0, 127, 127)
BLUE = (0, 0, 127)
PURPLE = (90, 0, 127)

#this will be called when button events are received
def blink(xcoord, ycoord, edge):
    #turn the LED on when a rising edge is detected
    if edge == NeoTrellis.EDGE_RISING:
        trellis.color(xcoord, ycoord, BLUE)
    #turn the LED off when a rising edge is detected
    elif edge == NeoTrellis.EDGE_FALLING:
        trellis.color(xcoord, ycoord, OFF)

for y in range(8):
    for x in range(8):
        #activate rising edge events on all keys
        print(x, y)
        trellis.activate_key(x, y, NeoTrellis.EDGE_RISING)
        #activate falling edge events on all keys
        trellis.activate_key(x, y, NeoTrellis.EDGE_FALLING)
        trellis.set_callback(x, y, blink)
        trellis.color(x, y, PURPLE)
        time.sleep(.05)

for y in range(8):
    for x in range(8):
        trellis.color(x, y, OFF)
        time.sleep(.05)

while True:
    #the trellis can only be read every 17 millisecons or so
    trellis.sync()
    time.sleep(.02)