Add fetch_display_image script

rpi/fetch_display_image.py

@@ -0,0 +1,71 @@
+import requests
+from dotenv import load_dotenv
+import os
+import sys
+import logging
+from PIL import Image
+
+libdir = "./e-Paper/RaspberryPi_JetsonNano/python/lib"
+if os.path.exists(libdir):
+    sys.path.append(libdir)
+from waveshare_epd import epd7in5_V2
+
+# Ref https://github.com/waveshareteam/e-Paper/blob/master/RaspberryPi_JetsonNano/python/examples/epd_7in5_V2_test.py
+
+
+load_dotenv()
+
+def fetch_image():
+    api_url = os.getenv("IMG_HOST_URL")
+    
+    try:
+        response = requests.get(api_url)
+        
+        if response.status_code == 200:
+            image_data = response.content
+            
+            with open("image.png", "wb") as file:
+                file.write(image_data)
+                
+            print("Image saved successfully as image.png")
+            return "image.png" 
+        else:
+            print(f"Failed to fetch image: {response.status_code}")
+            return None
+    except Exception as e:
+        print(f"An error occurred: {e}")
+        return None
+
+def display_image(image_file):
+    try:
+        epd = epd7in5_V2.EPD()
+        logging.debug("Initializing e-Paper display")
+        epd.init()
+
+        logging.debug(f"Reading image file: {image_file}")
+        Himage = Image.open(image_file)
+        logging.debug("Displaying image on screen")
+        epd.display(epd.getbuffer(Himage))
+        
+        # Put the display to sleep
+        logging.debug("Putting display to sleep")
+        epd.sleep()
+
+    except IOError as e:
+        logging.exception("IOError occurred: " + str(e))
+
+    except KeyboardInterrupt:
+        logging.debug("Keyboard Interrupt - Exiting")
+        epd7in5.epdconfig.module_exit()
+        sys.exit()
+
+def main():
+    image_file = fetch_image()
+    if image_file:
+        display_image(image_file)
+    else:
+        logging.error("Failed to fetch image. Exiting.")
+
+if __name__ == "__main__":
+    logging.basicConfig(level=logging.DEBUG, format='%(asctime)s - %(levelname)s - %(message)s')
+    main()