Merge pull request #2965 from adafruit/round_display

demo code for the gc9a01a round display

Author: BlitzCityDIY

GC9A01A_Demo_Code/Arduino_GC9A01A/.uno.test.only

@@ -0,0 +1,61 @@
+# SPDX-FileCopyrightText: 2025 Liz Clark for Adafruit Industries
+#
+# SPDX-License-Identifier: MIT
+
+import time
+import board
+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/Arduino_GC9A01A/Arduino_GC9A01A.ino

@@ -0,0 +1,71 @@
+# 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 Display'''
+
+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=0,
+    width=240, height=240,
+    x_offset=0, y_offset=0,
+    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.ellipse((0, 0, width, height), fill=(0, 255, 0))  # Green background
+
+draw1.ellipse(
+    (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 World!"
+(font_width, font_height) = font.getsize(text)
+draw1.text(
+    (width // 2 - font_width // 2, height // 2 - font_height // 2),
+    text,
+    font=font,
+    fill=(255, 255, 0),
+)
+
+# ------ADABOT 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 adabot
+    time.sleep(2)

GC9A01A_Demo_Code/CircuitPython_GC9A01A/blinka_round.bmp

@@ -4,7 +4,7 @@
 
 #include <Adafruit_NeoPixel.h>
 #include <Adafruit_BME280.h>
-#include <SensirionI2CScd4x.h>
+#include <SensirionI2cScd4x.h>
 #include <Wire.h>
 
 //--| User Config |-----------------------------------------------
@@ -15,7 +15,7 @@
 //----------------------------------------------------------------
 
 Adafruit_BME280 bme;
-SensirionI2CScd4x scd4x;
+SensirionI2cScd4x scd4x;
 Adafruit_NeoPixel neopixel(1, PIN_NEOPIXEL, NEO_GRB + NEO_KHZ800);
 
 uint16_t CO2, data_ready;
@@ -36,9 +36,9 @@ void setup() {
     Serial.println("Failed to initialize BME280.");
     neoPanic();
   }
-
+  Wire.begin();
   // init SCD40
-  scd4x.begin(Wire);
+  scd4x.begin(Wire, SCD41_I2C_ADDR_62);
   scd4x.stopPeriodicMeasurement();
   if (scd4x.startPeriodicMeasurement()) {
     Serial.println("Failed to start SCD40.");

GC9A01A_Demo_Code/CircuitPython_GC9A01A/code.py

@@ -1 +1 @@
-depends=Adafruit ILI9341, Adafruit BusIO, SD, Adafruit NeoPixel, Adafruit VS1053 Library, Adafruit BluefruitLE nRF51, Adafruit seesaw Library, Ethernet, Adafruit IO Arduino, FastLED, Adafruit LiquidCrystal, Adafruit SoftServo, TinyWireM, Adafruit AM radio library, WaveHC, Adafruit LED Backpack Library, MAX31850 OneWire, Adafruit VC0706 Serial Camera Library, RTClib, Adafruit SleepyDog Library, Adafruit Thermal Printer Library, Adafruit Zero I2S Library, Adafruit EPD, Adafruit SSD1351 library, Adafruit FONA Library, Adafruit Motor Shield V2 Library, Adafruit NeoMatrix, Adafruit Soundboard library, Adafruit Circuit Playground, ArduinoJson, Adafruit TCS34725, Adafruit Pixie, Adafruit GPS Library, TinyGPS, WiFi101, Adafruit DotStar, Adafruit Si7021 Library, Adafruit WS2801 Library, Mouse, Keyboard, Time, IRremote, Adafruit LSM9DS0 Library, Adafruit Arcada Library, MIDIUSB, PubSubClient, Adafruit LIS2MDL, Adafruit NeoPXL8, Adafruit MCP23017 Arduino Library, Adafruit MLX90640, LiquidCrystal, Adafruit NeoTrellis M4 Library, RGB matrix Panel, Adafruit MLX90614 Library, Adafruit RGB LCD Shield Library, MAX6675 library, Adafruit MP3, Adafruit Keypad, Adafruit Arcada GifDecoder, Keypad, Neosegment, Encoder, Adafruit TiCoServo, Adafruit Trellis Library, FauxmoESP, Adafruit LSM303 Accel, Adafruit LSM303DLH Mag, Adafruit LSM303DLHC, CapacitiveSensor, Adafruit Zero PDM Library, Adafruit DMA neopixel library, elapsedMillis, DST RTC, Adafruit SHARP Memory Display, Adafruit SPIFlash, BSEC Software Library, WiiChuck, Adafruit DPS310, Adafruit AHTX0, RotaryEncoder, Adafruit MCP9808 Library, LSM303, Adafruit Protomatter, Adafruit IS31FL3741 Library, Sensirion I2C SCD4x, Adafruit TestBed, Bounce2, Adafruit AHRS, Adafruit DRV2605 Library, STM32duino VL53L4CD, PicoDVI - Adafruit Fork, Adafruit MMA8451 Library, Adafruit TSC2007, GFX Library for Arduino, Adafruit PyCamera Library, Adafruit ADG72x, Adafruit BNO055, Adafruit SHT4x Library, Adafruit VCNL4200 Library
+depends=Adafruit ILI9341, Adafruit BusIO, SD, Adafruit NeoPixel, Adafruit VS1053 Library, Adafruit BluefruitLE nRF51, Adafruit seesaw Library, Ethernet, Adafruit IO Arduino, FastLED, Adafruit LiquidCrystal, Adafruit SoftServo, TinyWireM, Adafruit AM radio library, WaveHC, Adafruit LED Backpack Library, MAX31850 OneWire, Adafruit VC0706 Serial Camera Library, RTClib, Adafruit SleepyDog Library, Adafruit Thermal Printer Library, Adafruit Zero I2S Library, Adafruit EPD, Adafruit SSD1351 library, Adafruit FONA Library, Adafruit Motor Shield V2 Library, Adafruit NeoMatrix, Adafruit Soundboard library, Adafruit Circuit Playground, ArduinoJson, Adafruit TCS34725, Adafruit Pixie, Adafruit GPS Library, TinyGPS, WiFi101, Adafruit DotStar, Adafruit Si7021 Library, Adafruit WS2801 Library, Mouse, Keyboard, Time, IRremote, Adafruit LSM9DS0 Library, Adafruit Arcada Library, MIDIUSB, PubSubClient, Adafruit LIS2MDL, Adafruit NeoPXL8, Adafruit MCP23017 Arduino Library, Adafruit MLX90640, LiquidCrystal, Adafruit NeoTrellis M4 Library, RGB matrix Panel, Adafruit MLX90614 Library, Adafruit RGB LCD Shield Library, MAX6675 library, Adafruit MP3, Adafruit Keypad, Adafruit Arcada GifDecoder, Keypad, Neosegment, Encoder, Adafruit TiCoServo, Adafruit Trellis Library, FauxmoESP, Adafruit LSM303 Accel, Adafruit LSM303DLH Mag, Adafruit LSM303DLHC, CapacitiveSensor, Adafruit Zero PDM Library, Adafruit DMA neopixel library, elapsedMillis, DST RTC, Adafruit SHARP Memory Display, Adafruit SPIFlash, BSEC Software Library, WiiChuck, Adafruit DPS310, Adafruit AHTX0, RotaryEncoder, Adafruit MCP9808 Library, LSM303, Adafruit Protomatter, Adafruit IS31FL3741 Library, Sensirion I2C SCD4x, Adafruit TestBed, Bounce2, Adafruit AHRS, Adafruit DRV2605 Library, STM32duino VL53L4CD, PicoDVI - Adafruit Fork, Adafruit MMA8451 Library, Adafruit TSC2007, GFX Library for Arduino, Adafruit PyCamera Library, Adafruit ADG72x, Adafruit BNO055, Adafruit SHT4x Library, Adafruit VCNL4200 Library, Adafruit GC9A01A