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Shell_Transmitter/controller_helpers.py

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+import wifi
+import time
+import controller_config as config
+
+def rssi_to_percent(rssi):
+    """Converts RSSI (dBm) to a 0-100% signal strength."""
+    MIN_RSSI = -90; MAX_RSSI = -30
+    if rssi <= MIN_RSSI: return 0
+    if rssi >= MAX_RSSI: return 100
+    percent = ((rssi - MIN_RSSI) * 100) / (MAX_RSSI - MIN_RSSI)
+    return int(percent)
+    
+def setup_wifi_ap(ssid, password, channel):
+    """
+    Configures the device as a Wi-Fi Access Point (AP).
+    """
+    print(f"Setting up Wi-Fi AP: {ssid} on channel {channel}")
+    try:
+        wifi.radio.enabled = True
+        wifi.radio.start_ap(ssid=ssid, password=password, channel=channel, max_connections=4)
+        print(f"AP Started. IP: {wifi.radio.ipv4_address_ap}")
+        print(f"Waiting for clients... (SSID is VISIBLE: {ssid})")
+        
+    except Exception as ex:
+        print(f"Error starting AP: {ex}")
+        raise
+
+def print_help_file():
+    """Reads and prints the help file specified in config."""
+    print("\n--- ⌨️ KBD Bot Command List ---")
+    try:
+        with open(config.HELP_FILE, "r") as f:
+            for line in f:
+                print(line.strip())
+    except OSError:
+        print(f"ERROR: Help file not found: {config.HELP_FILE}")
+    print("---------------------------------")