neotrellis

adafruit_neotrellis_feather_launch_deck/code.py

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+# NeoTrellis Feather Launch Deck
+# Adafruit 4x4 NeoTrellis Feather M4 Kit Pack: https://www.adafruit.com/product/4352
+#
+# USB HID button box for launching applications, media control, camera switching and more
+# Use it with your favorite keyboard controlled launcher, such as Quicksilver and AutoHotkey
+#
+# Author: Nils Knieling  https://github.com/Cyclenerd
+# Inspired by: https://learn.adafruit.com/launch-deck-trellis-m4
+
+# Needed CircuitPython Libraries:
+#  * adafruit_bus_device
+#  * adafruit_hid
+#  * adafruit_neotrellis
+#  * adafruit_seesaw
+# Download: https://circuitpython.org/libraries
+
+import time
+from adafruit_neotrellis.neotrellis import NeoTrellis
+from board import SCL, SDA
+import busio
+import usb_hid
+from adafruit_hid.keyboard import Keyboard
+from adafruit_hid.keycode import Keycode
+from adafruit_hid.consumer_control import ConsumerControl
+from adafruit_hid.consumer_control_code import ConsumerControlCode
+
+# 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 = (255, 0, 255)
+
+# the two command types -- MEDIA for ConsumerControlCodes, KEY for Keycodes
+# this allows button press to send the correct HID command for the type specified
+MEDIA = 1
+KEY = 2
+
+# Keymap (event.number):
+# [ 0] [ 1] [ 2] [ 3]
+# [ 4] [ 5] [ 6] [ 7]
+# [ 8] [ 9] [10] [11]
+# [12] [13] [14] [15]
+#
+# Keycodes:
+# https://circuitpython.readthedocs.io/projects/hid/en/latest/_modules/adafruit_hid/keycode.html
+#
+# Button mapping:
+# customize these for your desired postitions, colors, and keyboard combos
+keymap = {
+     0: (GREEN,  MEDIA, ConsumerControlCode.PLAY_PAUSE),
+     1: (PURPLE, MEDIA, ConsumerControlCode.SCAN_PREVIOUS_TRACK),
+     2: (PURPLE, MEDIA, ConsumerControlCode.SCAN_NEXT_TRACK),
+     3: (BLUE,   MEDIA, ConsumerControlCode.MUTE),
+     4: (CYAN,   KEY,   (Keycode.SHIFT, Keycode.F13)), # AutoHotKey +F13
+     5: (CYAN,   KEY,   (Keycode.SHIFT, Keycode.F14)),
+     6: (CYAN,   KEY,   (Keycode.SHIFT, Keycode.F15)),
+     7: (CYAN,   KEY,   (Keycode.SHIFT, Keycode.F16)),
+     8: (RED,    KEY,   (Keycode.GUI, Keycode.ONE)), # Win+1, Chrome
+     9: (BLUE,   KEY,   (Keycode.GUI, Keycode.THREE)), # Win+3, KeePass
+    10: (GREEN,  KEY,   (Keycode.GUI, Keycode.NINE)), # Win+9, Spotify
+    11: (PURPLE, KEY,   (Keycode.GUI, Keycode.SEVEN)), # Win+7, Teams
+    12: (GREEN,  KEY,   (Keycode.CONTROL, Keycode.R)), # reload
+    13: (PURPLE, KEY,   (Keycode.CONTROL, Keycode.SHIFT, Keycode.TAB)), # cycle tabs backards
+    14: (PURPLE, KEY,   (Keycode.CONTROL, Keycode.TAB)), # cycle tab forwards
+    15: (RED,    KEY,   (Keycode.CONTROL, Keycode.F4)), # close tab
+}
+
+kbd = Keyboard(usb_hid.devices)
+cc = ConsumerControl(usb_hid.devices)
+
+# create the i2c object for the trellis
+i2c_bus = busio.I2C(SCL, SDA)
+
+# create the trellis
+trellis = NeoTrellis(i2c_bus, False, addr=0x2E)
+
+# this will be called when button events are received
+def blink(event):
+    button = event.number
+    if event.edge == NeoTrellis.EDGE_RISING:
+        print(button)
+        if keymap[button][1] == KEY:
+            kbd.press(*keymap[button][2])
+            kbd.release(*keymap[button][2])
+        else:
+            cc.send(keymap[button][2])
+
+for button in keymap:
+    trellis.pixels.brightness = 0.01
+    trellis.pixels[button] = keymap[button][0]
+    # activate rising edge events on all keys
+    trellis.activate_key(button, NeoTrellis.EDGE_RISING)
+    # activate falling edge events on all keys
+    trellis.activate_key(button, NeoTrellis.EDGE_FALLING)
+    # set all keys to trigger the blink callback
+    trellis.callbacks[button] = blink
+
+while True:
+    # call the sync function call any triggered callbacks
+    trellis.sync()
+    # the trellis can only be read every 17 millisecons or so
+    time.sleep(0.02)