adding cp and python demo code

Author: BlitzCityDIY

GC9A01A_Demo_Code/CircuitPython_GC9A01A/blinka_round.bmp

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+# SPDX-FileCopyrightText: 2025 Liz Clark for Adafruit Industries
+#
+# SPDX-License-Identifier: MIT
+
+import board
+import time
+import displayio
+import terminalio
+from adafruit_display_text.bitmap_label import Label
+import adafruit_imageload
+from fourwire import FourWire
+from vectorio import Circle
+from adafruit_gc9a01a import GC9A01A
+
+spi = board.SPI()
+tft_cs = board.D5
+tft_dc = board.D6
+tft_reset = board.D9
+
+displayio.release_displays()
+
+display_bus = FourWire(spi, command=tft_dc, chip_select=tft_cs, reset=tft_reset)
+display = GC9A01A(display_bus, width=240, height=240)
+
+# --- Default Shapes/Text Demo ---
+main_group = displayio.Group()
+display.root_group = main_group
+
+bg_bitmap = displayio.Bitmap(240, 240, 2)
+color_palette = displayio.Palette(2)
+color_palette[0] = 0x00FF00  # Bright Green
+color_palette[1] = 0xAA0088  # Purple
+
+bg_sprite = displayio.TileGrid(bg_bitmap, pixel_shader=color_palette, x=0, y=0)
+main_group.append(bg_sprite)
+
+inner_circle = Circle(pixel_shader=color_palette, x=120, y=120, radius=100, color_index=1)
+main_group.append(inner_circle)
+
+text_group = displayio.Group(scale=2, x=50, y=120)
+text = "Hello World!"
+text_area = Label(terminalio.FONT, text=text, color=0xFFFF00)
+text_group.append(text_area)  # Subgroup for text scaling
+main_group.append(text_group)
+
+# --- ImageLoad Demo ---
+blinka_group = displayio.Group()
+bitmap, palette = adafruit_imageload.load("/blinka_round.bmp",
+                                          bitmap=displayio.Bitmap,
+                                          palette=displayio.Palette)
+
+grid = displayio.TileGrid(bitmap, pixel_shader=palette)
+blinka_group.append(grid)
+
+while True:
+	# show shapes/text
+    display.root_group = main_group
+    time.sleep(2)
+	# show blinka bitmap
+    display.root_group = blinka_group
+    time.sleep(2)

GC9A01A_Demo_Code/CircuitPython_GC9A01A/code.py

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+# SPDX-FileCopyrightText: 2025 Liz Clark for Adafruit Industries
+# SPDX-FileCopyrightText: Adapted from Melissa LeBlanc-Williams's Pi Demo Code
+#
+# SPDX-License-Identifier: MIT
+
+'''Raspberry Pi Graphics example for the 240x240 Round TFT'''
+
+import time
+import digitalio
+import board
+from PIL import Image, ImageDraw, ImageFont
+from adafruit_rgb_display import gc9a01a
+
+BORDER = 20
+FONTSIZE = 24
+
+cs_pin = digitalio.DigitalInOut(board.CE0)
+dc_pin = digitalio.DigitalInOut(board.D25)
+reset_pin = digitalio.DigitalInOut(board.D27)
+
+BAUDRATE = 24000000
+
+spi = board.SPI()
+
+disp = gc9a01a.GC9A01A(spi, rotation=180,
+    width=135, height=240,
+    x_offset=53, y_offset=40,
+    cs=cs_pin,
+    dc=dc_pin,
+    rst=reset_pin,
+    baudrate=BAUDRATE,
+)
+
+width = disp.width
+height = disp.height
+
+# -------TEXT AND SHAPES---------
+image1 = Image.new("RGB", (width, height))
+draw1 = ImageDraw.Draw(image1)
+draw1.rectangle((0, 0, width, height), fill=(0, 255, 0))  # Green background
+
+draw1.rectangle(
+    (BORDER, BORDER, width - BORDER - 1, height - BORDER - 1), fill=(170, 0, 136)
+)
+font = ImageFont.truetype("/usr/share/fonts/truetype/dejavu/DejaVuSans.ttf", FONTSIZE)
+text = "Hello\nWorld!"
+(font_width, font_height) = font.getsize(text)
+draw1.text(
+    (30, height // 2 - font_height // 2-12),
+    text,
+    font=font,
+    fill=(255, 255, 0),
+)
+
+# ------BLINKA JPEG DISPLAY----------
+image2 = Image.open("blinka_round.jpg")
+image_ratio = image2.width / image2.height
+screen_ratio = width / height
+scaled_width = width
+scaled_height = image2.height * width // image2.width
+image2 = image2.resize((scaled_width, scaled_height), Image.BICUBIC)
+x = scaled_width // 2 - width // 2
+y = scaled_height // 2 - height // 2
+image2 = image2.crop((x, y, x + width, y + height))
+
+while True:
+    disp.image(image1)  # show text
+    time.sleep(2)
+    disp.image(image2)  # show blinka
+    time.sleep(2)