add pico u2if

[Adafruit_Blinka-hackapet.git] / src / adafruit_blinka / microcontroller / pico_u2if / neopixel.py

diff --git a/src/adafruit_blinka/microcontroller/pico_u2if/neopixel.py b/src/adafruit_blinka/microcontroller/pico_u2if/neopixel.py
new file mode 100644 (file)
index 0000000..281bec4
--- /dev/null
+++ b/src/adafruit_blinka/microcontroller/pico_u2if/neopixel.py
@@ -0,0 +1,15 @@
+from .pico_u2if import pico_u2if
+
+
+def neopixel_write(gpio, buf):
+    """NeoPixel Writing Function"""
+
+    # pad output buffer from 3 bpp to 4 bpp
+    buffer = []
+    for i in range(0, len(buf), 3):
+        buffer.append(0)
+        buffer.append(buf[i + 2])
+        buffer.append(buf[i])
+        buffer.append(buf[i + 1])
+
+    pico_u2if.neopixel_write(gpio, buffer)