79 lines
1.9 KiB
Python
79 lines
1.9 KiB
Python
# SPDX-FileCopyrightText: 2021 ladyada for Adafruit Industries
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# SPDX-License-Identifier: MIT
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"""
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This demo will fill the screen with white, draw a black box on top
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and then print the device's IP address in the center of the display
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This example is for use on (Linux) computers that are using CPython with
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Adafruit Blinka to support CircuitPython libraries. CircuitPython does
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not support PIL/pillow (python imaging library)!
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"""
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import board
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import digitalio
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from PIL import Image, ImageDraw, ImageFont
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import adafruit_ssd1306
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import socket
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# Define the Reset Pin
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oled_reset = None
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try:
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oled_reset = digitalio.DigitalInOut(board.D4)
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except:
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pass
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# No reset pin
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# Change these
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# to the right size for your display!
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WIDTH = 128
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HEIGHT = 64
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BORDER = 5
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# Use for I2C.
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i2c = board.I2C() # uses board.SCL and board.SDA
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oled = adafruit_ssd1306.SSD1306_I2C(WIDTH, HEIGHT, i2c, addr=0x3C, reset=oled_reset)
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# Clear display.
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oled.fill(0)
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oled.show()
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# Create blank image for drawing.
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# Make sure to create image with mode '1' for 1-bit color.
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image = Image.new("1", (oled.width, oled.height))
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# Get drawing object to draw on image.
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draw = ImageDraw.Draw(image)
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# Draw a white background
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draw.rectangle((0, 0, oled.width, oled.height), outline=255, fill=255)
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# Draw a smaller inner rectangle
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draw.rectangle(
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(BORDER, BORDER, oled.width - BORDER - 1, oled.height - BORDER - 1),
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outline=0,
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fill=0,
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)
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# Load default font.
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font = ImageFont.load_default()
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# Get the local IP address as a string.
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with socket.socket(socket.AF_INET, socket.SOCK_DGRAM) as s:
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s.connect(("8.8.8.8", 80))
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text = s.getsockname()[0]
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# Draw it into a box.
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bbox = font.getbbox(text)
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(font_width, font_height) = bbox[2] - bbox[0], bbox[3] - bbox[1]
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draw.text(
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(oled.width // 2 - font_width // 2, oled.height // 2 - font_height // 2),
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text,
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font=font,
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fill=255,
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)
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# Display image
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oled.image(image)
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oled.show()
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