72 lines
No EOL
1.8 KiB
Python
72 lines
No EOL
1.8 KiB
Python
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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import time
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s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
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s.connect(("8.8.8.8", 80)) # keine echte Verbindung, nur Routing
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ip_address = s.getsockname()[0]
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s.close()
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# Initialize OLED display dimensions
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WIDTH = 128
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HEIGHT = 64
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# Set up I2C communication with the OLED display
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i2c = board.I2C() # Utilizes board's SCL and SDA pins
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oled = adafruit_ssd1306.SSD1306_I2C(WIDTH, HEIGHT, i2c, addr=0x3C)
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# Clear the OLED display
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oled.fill(0)
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oled.show()
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# Create a new image with 1-bit color for drawing
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image = Image.new("1", (oled.width, oled.height))
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# Obtain a drawing object to manipulate the image
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draw = ImageDraw.Draw(image)
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# Draw a filled white rectangle as the background
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draw.rectangle((0, 0, oled.width, oled.height), outline=255, fill=255)
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# Define border size for an inner rectangle
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BORDER = 5
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# Draw a smaller black rectangle inside the larger one
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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 the default font for text
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font = ImageFont.load_default()
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def getfontsize(font, text):
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# Calculate the size of the text in pixels
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left, top, right, bottom = font.getbbox(text)
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return right - left, bottom - top
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# Define the text to be displayed
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text = "! Error !"
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# Get the width and height of the text in pixels
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(font_width, font_height) = getfontsize(font, text)
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# Draw the text, centered on the display
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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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# Send the image to the OLED display
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oled.image(image)
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oled.show()
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DISPLAY_ON_TIME = 10 * 60
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time.sleep(DISPLAY_ON_TIME)
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# --- OLED sauber ausschalten ---
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oled.poweroff() |