Merge pull request adafruit#1524 from adafruit/qtpy_lemon_keypad

Code for Lemon Keypad

Author: ladyada

QT_Py_RP2040_Lemon_Keypad/code.py

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+import time
+import digitalio
+import board
+import usb_hid
+import neopixel
+from adafruit_hid.consumer_control import ConsumerControl
+from adafruit_hid.consumer_control_code import ConsumerControlCode
+from adafruit_led_animation.animation.pulse import Pulse
+from adafruit_led_animation.animation.solid import Solid
+from adafruit_led_animation.group import AnimationGroup
+from adafruit_led_animation.sequence import AnimationSequence
+
+from adafruit_led_animation.color import WHITE, BLACK
+
+pixel_pin = board.A3
+num_pixels = 7
+
+pixels = neopixel.NeoPixel(pixel_pin, num_pixels, brightness=.3, auto_write=False)
+internal_pixel = neopixel.NeoPixel(board.NEOPIXEL, 1, brightness=1, auto_write=False)
+
+# The button pins we'll use, each will have an internal pullup
+buttonpins = [board.A0, board.A1, board.A2, board.D8, board.D9, board.D10]
+
+# The keycode sent for each button, will be paired with a control key
+buttonkeys = [
+    ConsumerControlCode.PLAY_PAUSE,
+    ConsumerControlCode.FAST_FORWARD,
+    ConsumerControlCode.VOLUME_INCREMENT,
+    ConsumerControlCode.MUTE,
+    ConsumerControlCode.VOLUME_DECREMENT,
+    ConsumerControlCode.REWIND
+]
+
+# the keyboard object!
+cc = ConsumerControl(usb_hid.devices)
+# our array of button objects
+buttons = []
+
+# make all pin objects, make them inputs w/pullups
+for pin in buttonpins:
+    button = digitalio.DigitalInOut(pin)
+    button.direction = digitalio.Direction.INPUT
+    button.pull = digitalio.Pull.UP
+    buttons.append(button)
+
+animations = AnimationSequence(
+    AnimationGroup(
+        Pulse(pixels, speed=0.05, color=WHITE, period=6),
+        Solid(internal_pixel,color=BLACK),
+    ),
+)
+
+print("Waiting for button presses")
+
+while True:
+    # animate neopixel jewel
+    animations.animate()
+    # check each button
+    for button in buttons:
+        if not button.value:  # pressed?
+            i = buttons.index(button)
+
+            print("Button #%d Pressed" % i)
+
+            while not button.value:
+                pass  # wait for it to be released!
+            # type the keycode!
+            k = buttonkeys[i]  # get the corresp. keycode
+            cc.send(k)
+    time.sleep(0.01)