Adding arduino and CP code for 5x5 BFF

Adding example code from Jeff and Phil B. for the 5x5 NeoPixel BFF

5x5_NeoPixel_BFF_Examples/Arduino_5x5_Scrolling_Text_Demo/Arduino_5x5_Scrolling_Text_Demo.ino

@@ -0,0 +1,61 @@
+// SPDX-FileCopyrightText: 2022 Phil B. for Adafruit Industries
+//
+// SPDX-License-Identifier: MIT
+
+// Example for 5x5 NeoBFF - scrolls a message across the LED matrix.
+// Requires Adafruit_GFX, Adafruit_NeoPixel and Adafruit_NeoMatrix libraries.
+
+#include <Adafruit_GFX.h>       // Graphics library
+#include <Adafruit_NeoPixel.h>  // NeoPixel library
+#include <Adafruit_NeoMatrix.h> // Bridges GFX and NeoPixel
+#include <Fonts/TomThumb.h>     // A tiny 3x5 font incl. w/GFX
+
+#define PIN A3
+
+// NeoMatrix declaration for BFF with the power and
+// Neo pins at the top (same edge as QT Py USB port):
+Adafruit_NeoMatrix matrix(5, 5, PIN,
+  NEO_MATRIX_TOP  + NEO_MATRIX_RIGHT +
+  NEO_MATRIX_ROWS + NEO_MATRIX_PROGRESSIVE,
+  NEO_GRB         + NEO_KHZ800);
+
+// Message to display, and a set of colors to cycle through. Because
+// the matrix is only 5 pixels tall, characters with descenders (e.g.
+// lowercase p or y) are best avoided. There are even smaller fonts
+// but these get progressively less legible. ALL CAPS helps!
+const char message[] = "HELLO BFF";
+const uint16_t colors[] = {
+  matrix.Color(255, 0, 0), matrix.Color(0, 255, 0), matrix.Color(0, 0, 255) };
+uint16_t message_width; // Computed in setup() below
+
+void setup() {
+  matrix.begin();
+  matrix.setBrightness(40);       // Turn down brightness to about 15%
+  matrix.setFont(&TomThumb);      // Use custom font
+  matrix.setTextWrap(false);      // Allows text to scroll off edges
+  matrix.setTextColor(colors[0]); // Start with first color in list
+  // To determine when the message has fully scrolled off the left side,
+  // get the bounding rectangle of the text. As we only need the width
+  // value, a couple of throwaway variables are passed to the bounds
+  // function for the other values:
+  int16_t  d1;
+  uint16_t d2;
+  matrix.getTextBounds(message, 0, 0, &d1, &d1, &message_width, &d2);
+}
+
+int x = matrix.width();  // Start with message off right edge
+int y = matrix.height(); // With custom fonts, y is the baseline, not top
+int pass = 0;            // Counts through the colors[] array
+
+void loop() {
+  matrix.fillScreen(0);       // Erase message in old position.
+  matrix.setCursor(x, y);     // Set new cursor position,
+  matrix.print(message);      // draw the message
+  matrix.show();              // and update the matrix.
+  if(--x < -message_width) {  // Move 1 pixel left. Then, if scrolled off left...
+    x = matrix.width();       // reset position off right edge and
+    if(++pass >= 3) pass = 0; // increment color in list, rolling over if needed.
+    matrix.setTextColor(colors[pass]);
+  }
+  delay(100); // 1/10 sec pause
+}

5x5_NeoPixel_BFF_Examples/CircuitPython_Scrolling_Text/code.py

@@ -13,7 +13,7 @@ font = bitmap_font.load_font("tom-thumb.pcf", Bitmap)
 label = Label(text="Hello World!!  Adafruit QT Py RP2040 + NeoPixel BFF  ", font=font)
 bitmap = label.bitmap
 
-pixels = neopixel.NeoPixel(board.A2, 5*5, brightness=.07, auto_write=False)
+pixels = neopixel.NeoPixel(board.A3, 5*5, brightness=.07, auto_write=False)
 pixels.fill(0)
 pixels.show()
 colors = [0, 0]

5x5_NeoPixel_BFF_Examples/CircuitPython_Store_Demo/code.py

@@ -0,0 +1,83 @@
+# SPDX-FileCopyrightText: Copyright (c) 2022 Jeff Epler for Adafruit Industries
+#
+# SPDX-License-Identifier: Unlicense
+import time
+import board
+import neopixel
+import fontio
+from adafruit_display_text.bitmap_label import Label
+from adafruit_bitmap_font import bitmap_font
+from displayio import Bitmap
+from rainbowio import colorwheel
+
+tom_thumb = bitmap_font.load_font("tom-thumb.pcf", Bitmap)
+
+_glyph_keys = ['bitmap', 'tile_index', 'width', 'height', 'dx', 'dy', 'shift_x', 'shift_y']
+def patch_glyph(base, **kw):
+    d = {}
+    for k in _glyph_keys:
+        d[k] = kw.get(k, getattr(base, k))
+    return fontio.Glyph(**d)
+
+class PatchedFont:
+    def __init__(self, base_font, patches):
+        self.base_font = base_font
+        self.patches = patches
+
+    def get_glyph(self, glyph):
+        g = self.base_font.get_glyph(glyph)
+        patch = self.patches.get(glyph)
+        if patch is not None:
+            print("patching", repr(chr(glyph)), g)
+            g = patch_glyph(g, **patch)
+            print("patched", g)
+        return g
+
+    def get_bounding_box(self):
+        return self.base_font.get_bounding_box()
+
+font = PatchedFont(tom_thumb,
+    {
+        32: {'shift_x': 1, 'dx': 0},
+        105: {'dx': 0, 'shift_x': 2},
+        33: {'dx': 0, 'shift_x': 2},
+    })
+
+label = Label(text=" adafruit!    ", font=font)
+bitmap = label.bitmap
+
+heart_bitmap = [
+    0,1,1,0,0,
+    1,1,1,1,0,
+    0,1,1,1,1,
+    1,1,1,1,0,
+    0,1,1,0,0,
+]
+
+pixels = neopixel.NeoPixel(board.A3, 5*5, brightness=.06, auto_write=False)
+
+while True:
+    for hue in range(0, 255, 3):
+        color = colorwheel(hue)
+        pixels[:] = [pixel * color for pixel in heart_bitmap]
+        pixels.show()
+        time.sleep(.01)
+
+    hue = 0
+    for i in range(bitmap.width):
+        # Use a rainbow of colors, shifting each column of pixels
+        hue = hue + 7
+        if hue >= 256:
+            hue = hue - 256
+
+        color = colorwheel(hue)
+
+        # Scoot the old text left by 1 pixel
+        pixels[:20] = pixels[5:]
+
+        # Draw in the next line of text
+        for y in range(5):
+            # Select black or color depending on the bitmap pixel
+            pixels[20+y] = color * bitmap[i,y]
+        pixels.show()
+        time.sleep(.1)