Merge pull request #2699 from adafruit/Matrix-Bluetooth-Controlled-Sign

Adding Bluetooth-Controlled LED Sign code

Author: TheKitty

Matrix_Bluetooth_Controlled_LED_Sign/code.py

@@ -0,0 +1,90 @@
+# SPDX-FileCopyrightText: 2023 Trevor Beaton for Adafruit Industries
+# SPDX-License-Identifier: MIT
+
+
+import time
+import board
+import displayio
+import framebufferio
+import rgbmatrix
+import terminalio
+from adafruit_display_text import label
+from adafruit_ble import BLERadio
+from adafruit_ble.advertising.standard import ProvideServicesAdvertisement
+from adafruit_ble.services.nordic import UARTService
+
+SEND_RATE = 10  # how often in seconds to send text
+
+count = 0
+
+SCROLL_DELAY = 0.05  # delay between scrolls, in seconds
+
+ble = BLERadio()
+uart_server = UARTService()
+advertisement = ProvideServicesAdvertisement(uart_server)
+
+# Release any previously allocated displays
+displayio.release_displays()
+
+matrix = rgbmatrix.RGBMatrix(
+    width=64, height=32, bit_depth=1,
+    rgb_pins=[board.D6, board.A5, board.A1, board.A0, board.A4, board.D11],
+    addr_pins=[board.D10, board.D5, board.D13, board.D9],
+    clock_pin=board.D12, latch_pin=board.RX, output_enable_pin=board.TX,
+)
+display = framebufferio.FramebufferDisplay(matrix, auto_refresh=True)
+
+main_group = displayio.Group()
+
+def scroll(line):
+    line.x -= 1
+    line_width = line.bounding_box[2]
+    if line.x < -line_width:
+        line.x = display.width
+
+def update_display(text, color=0xFFFFFF):
+    """Update the display with the provided text and color."""
+    if len(main_group) > 0:
+        main_group.pop()
+    text_area = label.Label(terminalio.FONT, text=text, color=color)
+    text_area.x = display.width
+    text_area.y = 13
+    main_group.append(text_area)
+    display.show(main_group)
+
+while True:
+    print("WAITING...")
+    update_display("WAITING...")
+    ble.start_advertising(advertisement)
+
+    while not ble.connected:
+        scroll(main_group[0])
+        display.refresh(minimum_frames_per_second=0)
+        time.sleep(SCROLL_DELAY)
+
+    # Connected
+    ble.stop_advertising()
+    print("CONNECTED")
+    update_display("CONNECTED")
+
+    # Loop and read packets
+    last_send = time.monotonic()
+    while ble.connected:
+        if uart_server.in_waiting:
+            raw_bytes = uart_server.read(uart_server.in_waiting)
+            received_text = raw_bytes.decode().strip()
+            print("RX:", received_text)
+            update_display(received_text, color=0x26B7FF)
+
+        if time.monotonic() - last_send > SEND_RATE:
+            transmit_text = "COUNT = {}".format(count)
+            print("TX:", transmit_text)
+            uart_server.write((transmit_text + "\r\n").encode())
+            count += 1
+            last_send = time.monotonic()
+
+        scroll(main_group[0])
+        display.refresh(minimum_frames_per_second=0)
+        time.sleep(SCROLL_DELAY)
+
+    print("DISCONNECTED")