From f51f0a4e7ad5e07de58989bf6579a9cc5182a344 Mon Sep 17 00:00:00 2001
From: Kattni Rembor <kattni@adafruit.com>
Date: Tue, 13 Apr 2021 19:02:54 -0400
Subject: [PATCH] CircuitPython Neo Trinkey examples.

---
 Adafruit_Neo_Trinkey/cap_touch_hid.py         | 25 +++++++++++
 .../cap_touch_neopixel_brightness.py          | 41 +++++++++++++++++++
 Adafruit_Neo_Trinkey/neopixel_blink.py        | 12 ++++++
 3 files changed, 78 insertions(+)
 create mode 100644 Adafruit_Neo_Trinkey/cap_touch_hid.py
 create mode 100644 Adafruit_Neo_Trinkey/cap_touch_neopixel_brightness.py
 create mode 100644 Adafruit_Neo_Trinkey/neopixel_blink.py

diff --git a/Adafruit_Neo_Trinkey/cap_touch_hid.py b/Adafruit_Neo_Trinkey/cap_touch_hid.py
new file mode 100644
index 000000000..4096471bc
--- /dev/null
+++ b/Adafruit_Neo_Trinkey/cap_touch_hid.py
@@ -0,0 +1,25 @@
+"""CircuitPython Capacitive Touch HID Example for Neo Trinkey"""
+import time
+import board
+import touchio
+import usb_hid
+from adafruit_hid.keyboard import Keyboard
+from adafruit_hid.keyboard_layout_us import KeyboardLayoutUS
+from adafruit_hid.keycode import Keycode
+
+keyboard = Keyboard(usb_hid.devices)
+keyboard_layout = KeyboardLayoutUS(keyboard)
+
+touch1 = touchio.TouchIn(board.TOUCH1)
+touch2 = touchio.TouchIn(board.TOUCH2)
+
+while True:
+    if touch1.value:  # If touch pad 1 is touched...
+        while touch1.value:  # Wait for release...
+            time.sleep(0.1)
+        keyboard.send(Keycode.SHIFT, Keycode.A)  # Then send key press.
+
+    if touch2.value:  # If touch pad 2 is touched...
+        while touch2.value:  # Wait for release...
+            time.sleep(0.1)
+        keyboard_layout.write("Hello World!\n")  # Then send string.
diff --git a/Adafruit_Neo_Trinkey/cap_touch_neopixel_brightness.py b/Adafruit_Neo_Trinkey/cap_touch_neopixel_brightness.py
new file mode 100644
index 000000000..170a85b68
--- /dev/null
+++ b/Adafruit_Neo_Trinkey/cap_touch_neopixel_brightness.py
@@ -0,0 +1,41 @@
+"""CircuitPython Capacitive Touch NeoPixel Brightness Control Exmaple"""
+import time
+import board
+import touchio
+import neopixel
+from _pixelbuf import colorwheel
+
+touch1 = touchio.TouchIn(board.TOUCH1)
+touch2 = touchio.TouchIn(board.TOUCH2)
+
+pixels = neopixel.NeoPixel(board.NEOPIXEL, 4, auto_write=False)
+
+
+def rainbow(color_index):
+    for pixel in range(4):
+        pixel_index = (pixel * 256 // 4) + color_index
+        pixels[pixel] = colorwheel(pixel_index & 255)
+    pixels.show()
+
+
+touched = time.monotonic()
+color = 0
+while True:
+    color = color + 1
+    if color > 255:
+        color = 0
+
+    rainbow(color)
+
+    if time.monotonic() - touched < 0.15:
+        continue
+    if touch1.value:
+        # Touch pad 1 to increase the brightness.
+        pixels.brightness += 0.05
+        pixels.show()
+        touched = time.monotonic()
+    elif touch2.value:
+        # Touch pad 2 to decrease the brightness.
+        pixels.brightness -= 0.05
+        pixels.show()
+        touched = time.monotonic()
diff --git a/Adafruit_Neo_Trinkey/neopixel_blink.py b/Adafruit_Neo_Trinkey/neopixel_blink.py
new file mode 100644
index 000000000..73ce34f2c
--- /dev/null
+++ b/Adafruit_Neo_Trinkey/neopixel_blink.py
@@ -0,0 +1,12 @@
+"""CircuitPython NeoPixel Blink example - blinking the built-in NeoPixels."""
+import time
+import board
+import neopixel
+
+pixels = neopixel.NeoPixel(board.NEOPIXEL, 4)
+
+while True:
+    pixels.fill((255, 0, 0))
+    time.sleep(0.5)
+    pixels.fill((0, 0, 0))
+    time.sleep(0.5)