esp8266: Add APA102 serial individually controllable LEDs support.

APA102 is a new "smart LED", similar to WS2812 aka "Neopixel".

1 files changed, 28 insertions, 0 deletions

diff --git a/esp8266/scripts/apa102.py b/esp8266/scripts/apa102.py
new file mode 100644
index 0000000000..126448cc20
--- /dev/null
+++ b/esp8266/scripts/apa102.py
@@ -0,0 +1,28 @@
+# APA102 driver for MicroPython on ESP8266
+# MIT license; Copyright (c) 2016 Robert Foss, Daniel Busch
+
+from esp import apa102_write
+
+class APA102:
+    def __init__(self, clock_pin, data_pin, n):
+        self.clock_pin = clock_pin
+        self.data_pin = data_pin
+        self.n = n
+        self.buf = bytearray(n * 4)
+
+        self.clock_pin.init(clock_pin.OUT)
+        self.data_pin.init(data_pin.OUT)
+
+    def __setitem__(self, index, val):
+        r, g, b, brightness = val
+        self.buf[index * 4] = r
+        self.buf[index * 4 + 1] = g
+        self.buf[index * 4 + 2] = b
+        self.buf[index * 4 + 3] = brightness
+
+    def __getitem__(self, index):
+        i = index * 4
+        return self.buf[i], self.buf[i + 1], self.buf[i + 2], self.buf[i + 3]
+
+    def write(self):
+        apa102_write(self.clock_pin, self.data_pin, self.buf)