Add support for the charlie bonnet

adafruit_is31fl3731.py

@@ -353,3 +353,16 @@ def pixel_addr(x, y):
         else:
             y = 7 - y
         return x * 16 + y
+
+
+class CharlieBonnet(Matrix):
+    """Supports the Charlieplexed bonnet"""
+    width = 16
+    height = 8
+
+    @staticmethod
+    def pixel_addr(x, y):
+        """Calulate the offset into the device array for x,y pixel"""
+        if x >= 8:
+            return (x-6) * 16 - (y + 1)
+        return (x+1) * 16 + (7 - y)

examples/is31fl3731_simpletest.py

@@ -2,19 +2,23 @@
 import busio
 import adafruit_is31fl3731
 
+i2c = busio.I2C(board.SCL, board.SDA)
 
-with busio.I2C(board.SCL, board.SDA) as i2c:
-    # initialize display using Feather CharlieWing LED 15 x 7
-    display = adafruit_is31fl3731.CharlieWing(i2c)
-    # uncomment next line if you are using Adafruit 16x9 Charlieplexed PWM LED Matrix
-    #display = adafruit_is31fl3731.Matrix(i2c)
+# initialize display using Feather CharlieWing LED 15 x 7
+display = adafruit_is31fl3731.CharlieWing(i2c)
 
-    # draw a box on the display
-    # first draw the top and bottom edges
-    for x in range(display.width):
-        display.pixel(x, 0, 50)
-        display.pixel(x, display.height - 1, 50)
-    # now draw the left and right edges
-    for y in range(display.height):
-        display.pixel(0, y, 50)
-        display.pixel(display.width - 1, y, 50)
+# uncomment next line if you are using Adafruit 16x9 Charlieplexed PWM LED Matrix
+#display = adafruit_is31fl3731.Matrix(i2c)
+
+# uncomment next line if you are using Adafruit 16x8 Charlieplexed Bonnet
+#display = adafruit_is31fl3731.CharlieBonnet(i2c)
+
+# draw a box on the display
+# first draw the top and bottom edges
+for x in range(display.width):
+    display.pixel(x, 0, 50)
+    display.pixel(x, display.height - 1, 50)
+# now draw the left and right edges
+for y in range(display.height):
+    display.pixel(0, y, 50)
+    display.pixel(display.width - 1, y, 50)

examples/wave.py

@@ -2,25 +2,31 @@
 import busio
 import adafruit_is31fl3731
 
+i2c = busio.I2C(board.SCL, board.SDA)
 
 sweep = [1, 2, 3, 4, 6, 8, 10, 15, 20, 30, 40, 60, 60, 40, 30, 20, 15, 10, 8, 6, 4, 3, 2, 1]
 
 frame = 0
-with busio.I2C(board.SCL, board.SDA) as i2c:
-    # initialize display using Feather CharlieWing LED 15 x 7
-    display = adafruit_is31fl3731.CharlieWing(i2c)
-    # uncomment next line if you are using Adafruit 16x9 Charlieplexed PWM LED Matrix
-    #display = adafruit_is31fl3731.Matrix(i2c)
 
-    while True:
-        for incr in range(24):
-            # to reduce update flicker, use two frames
-            # make a frame active, don't show it yet
-            display.frame(frame, show=False)
-            # fill the display with the next frame
-            for x in range(display.width):
-                for y in range(display.height):
-                    display.pixel(x, y, sweep[(x+y+incr)%24])
-            # show the next frame
-            display.frame(frame, show=True)
-            frame = 0 if frame else 1
+# initialize display using Feather CharlieWing LED 15 x 7
+display = adafruit_is31fl3731.CharlieWing(i2c)
+# uncomment next line if you are using Adafruit 16x9 Charlieplexed PWM LED Matrix
+#display = adafruit_is31fl3731.Matrix(i2c)
+# uncomment next line if you are using Adafruit 16x8 Charlieplexed Bonnet
+#display = adafruit_is31fl3731.CharlieBonnet(i2c)
+
+while True:
+    for incr in range(24):
+        # to reduce update flicker, use two frames
+        # make a frame active, don't show it yet
+        display.frame(frame, show=False)
+        # fill the display with the next frame
+        for x in range(display.width):
+            for y in range(display.height):
+                display.pixel(x, y, sweep[(x+y+incr)%24])
+        # show the next frame
+        display.frame(frame, show=True)
+        if frame:
+            frame = 0
+        else:
+            frame = 1