error hinzugefügt

Python/Cron

@@ -1 +1 @@
-@reboot sleep 30 && /usr/bin/python3 /home/christof/lcd/test3.py >> /var/log/start_after_boot.log 2>&1
+@reboot sleep 30 && /usr/bin/python3 /home/christof/lcd/LCD.py >> /var/log/start_after_boot.log 2>&1

Python/LCD.py

@@ -46,7 +46,7 @@ def main():
             print("Alle Container sind running + healthy.")
 
             subprocess.run(
-                ["python3", "test.py"],
+                ["python3", "/home/christof/lcd/test.py"],
                 check=True
             )
             return 0
@@ -54,6 +54,10 @@ def main():
         time.sleep(SLEEP_S)
 
     print("Timeout: Container nicht rechtzeitig healthy.", file=sys.stderr)
+    subprocess.run(
+        ["python3", "/home/christof/lcd/error.py"],
+        check=True
+    )
     return 1
 
 if __name__ == "__main__":

Python/README.md

@@ -2,4 +2,9 @@ python3 -m pip config set global.break-system-packages true
 
 sudo pip3 install adafruit-blinka
 
+
+sudo pip3 install adafruit-circuitpython-ssd1306
+
+sudo pip3 install Pillow
+
 <img src="Pi.png" alt="mqtt" width="300"/>

Python/error.py

@@ -0,0 +1,72 @@
+import board
+import digitalio
+from PIL import Image, ImageDraw, ImageFont
+import adafruit_ssd1306
+import socket
+import time
+
+s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
+s.connect(("8.8.8.8", 80))   # keine echte Verbindung, nur Routing
+ip_address = s.getsockname()[0]
+s.close()
+
+
+# Initialize OLED display dimensions
+WIDTH = 128
+HEIGHT = 64
+
+# Set up I2C communication with the OLED display
+i2c = board.I2C()  # Utilizes board's SCL and SDA pins
+oled = adafruit_ssd1306.SSD1306_I2C(WIDTH, HEIGHT, i2c, addr=0x3C)
+
+# Clear the OLED display
+oled.fill(0)
+oled.show()
+
+# Create a new image with 1-bit color for drawing
+image = Image.new("1", (oled.width, oled.height))
+
+# Obtain a drawing object to manipulate the image
+draw = ImageDraw.Draw(image)
+
+# Draw a filled white rectangle as the background
+draw.rectangle((0, 0, oled.width, oled.height), outline=255, fill=255)
+
+# Define border size for an inner rectangle
+BORDER = 5
+# Draw a smaller black rectangle inside the larger one
+draw.rectangle(
+    (BORDER, BORDER, oled.width - BORDER - 1, oled.height - BORDER - 1),
+    outline=0,
+    fill=0,
+)
+
+# Load the default font for text
+font = ImageFont.load_default()
+
+def getfontsize(font, text):
+    # Calculate the size of the text in pixels
+    left, top, right, bottom = font.getbbox(text)
+    return right - left, bottom - top
+
+# Define the text to be displayed
+text = "! Error !"
+# Get the width and height of the text in pixels
+(font_width, font_height) = getfontsize(font, text)
+# Draw the text, centered on the display
+draw.text(
+    (oled.width // 2 - font_width // 2, oled.height // 2 - font_height // 2),
+    text,
+    font=font,
+    fill=255,
+)
+
+# Send the image to the OLED display
+oled.image(image)
+oled.show()
+
+DISPLAY_ON_TIME = 10 * 60
+time.sleep(DISPLAY_ON_TIME)
+
+# --- OLED sauber ausschalten ---
+oled.poweroff()

Python/test.py

@@ -0,0 +1,72 @@
+import board
+import digitalio
+from PIL import Image, ImageDraw, ImageFont
+import adafruit_ssd1306
+import socket
+import time
+
+s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
+s.connect(("8.8.8.8", 80))   # keine echte Verbindung, nur Routing
+ip_address = s.getsockname()[0]
+s.close()
+
+
+# Initialize OLED display dimensions
+WIDTH = 128
+HEIGHT = 64
+
+# Set up I2C communication with the OLED display
+i2c = board.I2C()  # Utilizes board's SCL and SDA pins
+oled = adafruit_ssd1306.SSD1306_I2C(WIDTH, HEIGHT, i2c, addr=0x3C)
+
+# Clear the OLED display
+oled.fill(0)
+oled.show()
+
+# Create a new image with 1-bit color for drawing
+image = Image.new("1", (oled.width, oled.height))
+
+# Obtain a drawing object to manipulate the image
+draw = ImageDraw.Draw(image)
+
+# Draw a filled white rectangle as the background
+draw.rectangle((0, 0, oled.width, oled.height), outline=255, fill=255)
+
+# Define border size for an inner rectangle
+BORDER = 5
+# Draw a smaller black rectangle inside the larger one
+draw.rectangle(
+    (BORDER, BORDER, oled.width - BORDER - 1, oled.height - BORDER - 1),
+    outline=0,
+    fill=0,
+)
+
+# Load the default font for text
+font = ImageFont.load_default()
+
+def getfontsize(font, text):
+    # Calculate the size of the text in pixels
+    left, top, right, bottom = font.getbbox(text)
+    return right - left, bottom - top
+
+# Define the text to be displayed
+text = ip_address
+# Get the width and height of the text in pixels
+(font_width, font_height) = getfontsize(font, text)
+# Draw the text, centered on the display
+draw.text(
+    (oled.width // 2 - font_width // 2, oled.height // 2 - font_height // 2),
+    text,
+    font=font,
+    fill=255,
+)
+
+# Send the image to the OLED display
+oled.image(image)
+oled.show()
+
+DISPLAY_ON_TIME = 10 * 60
+time.sleep(DISPLAY_ON_TIME)
+
+# --- OLED sauber ausschalten ---
+oled.poweroff()

grafana/docker-compos.yml

@@ -12,7 +12,7 @@ services:
     ports:
       - '3000:3000'
     volumes:
-      - /home/christof/grafana/storage/:/var/lib/grafana'
+      - /home/christof/grafana/storage/:/var/lib/grafana
 
 
 networks: