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examples/neotrellism4_multitrellis_simpletest.py

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+import time
+
+from board import SCL, SDA
+import busio
+from adafruit_neotrellis.neotrellism4 import NeoTrellisM4
+from adafruit_neotrellis.neotrellis import NeoTrellis
+from adafruit_neotrellis.multitrellis import MultiTrellis
+
+#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)

examples/neotrellism4_simpletest.py

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+import time
+
+from adafruit_neotrellis.neotrellism4 import NeoTrellisM4
+
+
+#create the trellis
+trellis_left = NeoTrellisM4()
+trellis_right = NeoTrellisM4(left_part=trellis_left)
+
+#some color definitions
+OFF = (0, 0, 0)
+RED = (255, 0, 0)
+YELLOW = (255, 150, 0)
+GREEN = (0, 255, 0)
+CYAN = (0, 255, 255)
+BLUE = (0, 0, 255)
+PURPLE = (180, 0, 255)
+
+#this will be called when button events are received
+def blink(event):
+    #turn the LED on when a rising edge is detected
+    if event.edge == NeoTrellisM4.EDGE_RISING:
+        trellis_left.pixels[event.number] = CYAN
+    #turn the LED off when a rising edge is detected
+    elif event.edge == NeoTrellisM4.EDGE_FALLING:
+        trellis_left.pixels[event.number] = OFF
+
+for i in range(16):
+    #activate rising edge events on all keys
+    trellis_left.activate_key(i, NeoTrellisM4.EDGE_RISING)
+    #activate falling edge events on all keys
+    trellis_left.activate_key(i, NeoTrellisM4.EDGE_FALLING)
+    #set all keys to trigger the blink callback
+    trellis_left.callbacks[i] = blink
+
+    #cycle the LEDs on startup
+    trellis_left.pixels[i] = PURPLE
+    time.sleep(.05)
+
+for i in range(16):
+    trellis_left.pixels[i] = OFF
+    time.sleep(.05)
+
+for i in range(16):
+    #activate rising edge events on all keys
+    trellis_right.activate_key(i, NeoTrellisM4.EDGE_RISING)
+    #activate falling edge events on all keys
+    trellis_right.activate_key(i, NeoTrellisM4.EDGE_FALLING)
+    #set all keys to trigger the blink callback
+    trellis_right.callbacks[i] = blink
+
+    #cycle the LEDs on startup
+    trellis_right.pixels[i] = PURPLE
+    time.sleep(.05)
+
+for i in range(16):
+    trellis_right.pixels[i] = OFF
+    time.sleep(.05)
+
+#print(trellis.callbacks)
+time.sleep(2)
+
+while True:
+    #call the sync function call any triggered callbacks
+    trellis_left.sync()
+    trellis_right.sync()
+    #the trellis can only be read every 17 millisecons or so
+    time.sleep(.02)