Initial commit: ESP32-S3-RLCD-4.2 hardware utility classes and demo

main.py

@@ -0,0 +1,53 @@
+import rlcd
+from machine import Pin, SPI
+from wifi_util import WiFiUtil
+import time
+
+def main():
+    print("Initializing SPI and Display...")
+    # Setup SPI
+    spi = SPI(1, baudrate=20000000, polarity=0, phase=0, 
+              sck=Pin(11), mosi=Pin(12))
+
+    # Initialize Display
+    display = rlcd.RLCD(spi, cs=Pin(40), dc=Pin(5), rst=Pin(41))
+
+    # 1. Show a loading state
+    display.clear(0)
+    display.text("Scanning for Wi-Fi...", 10, 10, 1)
+    display.show()
+
+    # 2. Scan for networks
+    wifi = WiFiUtil()
+    networks = wifi.scan()
+
+    # 3. Draw the results
+    print("Drawing networks to buffer...")
+    display.clear(0)  # Clear to white
+    
+    # Title
+    display.text("Available Wi-Fi Networks:", 10, 10, 1)
+    display.line(10, 20, 210, 20, 1)
+    
+    # List networks
+    y_offset = 30
+    # Limit to 20 networks so they fit on the 300px tall screen (20 * 12px = 240px + 30px offset = 270px)
+    for i, net in enumerate(networks[:20]):
+        text = f"{i+1}. {net['ssid']} ({net['rssi']}dBm)"
+        display.text(text, 10, y_offset, 1)
+        y_offset += 12
+
+    if not networks:
+        display.text("No networks found.", 10, 30, 1)
+
+    # 4. Update Screen
+    print("Updating screen...")
+    display.show()
+    try:
+        display.save_screenshot('screenshot.pbm')
+    except Exception as e:
+        print(f"Failed to save screenshot: {e}")
+    print("Done!")
+
+if __name__ == "__main__":
+    main()