implemented simple LLM chat

deck/net.py

@@ -0,0 +1,73 @@
+# deck.net: T-Deck network helper library for CircuitPython
+# Depends on some Adafruit Bundle libs
+# Normal flow (provided Wi-Fi creds are in settings.toml):
+#
+# from deck import net
+# status, stext, myip = net.wifi_connect_wait()
+# if status:
+#   requests = net.init_requests()
+#   # or socket = net.init_socket() if raw sockets are necessary
+#   while net.my_ip():
+#     ...
+#
+# Created by Luxferre in 2025, released into public domain
+
+import os, time                                       # standard modules
+import wifi                                           # CircuitPython builtins
+import adafruit_connection_manager, adafruit_requests # Adafruit Bundle libs
+
+def wifi_connect(ssid=None, password=None):
+  '''
+  Connect to a Wi-Fi SSID
+  Use settings.toml for default credentials
+  '''
+  ssid = ssid or os.getenv('CIRCUITPY_WIFI_SSID')
+  password = password or os.getenv('CIRCUITPY_WIFI_PASSWORD')
+  try:
+    wifi.radio.connect(ssid=ssid, password=password)
+  except ConnectionError as e:
+    return (False, e)
+  return (True, 'Connected')
+
+def my_ip():
+  'Get the local IP address'
+  return wifi.radio.ipv4_address
+
+def wifi_connect_wait(ssid=None, password=None, tmout=15, retries=3):
+  '''
+  Connect to a Wi-Fi SSID and wait for successful connection
+  Usually, you'll want to use this function to connect
+  '''
+  r = 0
+  status = wifi.radio.connected
+  stext = ''
+  while not wifi.radio.ipv4_address and r < retries:
+    status, stext = wifi_connect(ssid, password)
+    if not status:
+      time.sleep(tmout)
+      r += 1
+  if not status:
+    stext = 'Could not connect, out of attempts. Last error: ' + stext
+  return (status, stext, wifi.radio.ipv4_address)
+
+def wifi_scan():
+  'Scan for Wi-Fi networks (returns (SSID, rssi) tuple list from strongest to weakest)'
+  networks = []
+  for network in wifi.radio.start_scanning_networks():
+    networks.append(network)
+  wifi.radio.stop_scanning_networks()
+  networks = sorted(networks, key=lambda net: net.rssi, reverse=True)
+  return [(net.ssid, net.rssi) for net in networks]
+
+def ssl_context():
+  'Get the default SSL context for wrapping a raw socket'
+  return adafruit_connection_manager.get_radio_ssl_context(wifi.radio)
+
+def init_socket():
+  'Get a socket pool and instantiate a Socket library'
+  return adafruit_connection_manager.get_radio_socketpool(wifi.radio)
+
+def init_requests():
+  'Instantiate a Requests library'
+  return adafruit_requests.Session(init_socket(), ssl_context())
+