diff --git a/main.py b/main.py index cbdd363..747aea8 100644 --- a/main.py +++ b/main.py @@ -2,6 +2,8 @@ import _thread import ubinascii import uwebsockets +# to remember WiFi disconnects +has_wifi_connection = False # WebSocket connection conn = None # blockly highlihgt WebSocket connection @@ -53,13 +55,30 @@ def step(): def ws_handler(): global ast global conn + global has_wifi_connection while True: + # when WiFi is connected + if wlan.isconnected(): + # when WiFi has just been reconnected + if not has_wifi_connection: + conn = uwebsockets.connect(url) + sumorobot.set_led(STATUS, True) + has_wifi_connection = True + else: # when WiFi is not connected + # when WiFi has just been disconnected + if has_wifi_connection: + sumorobot.set_led(STATUS, False) + has_wifi_connection = False + # continue to wait for a WiFi connection + continue + try: fin, opcode, data = conn.read_frame() except: # urror - print("Exception while reading from socket, attempting reconnect") - conn = uwebsockets.connect(url) + # socket timeout, no data received + print("socket timeout") + # continue to read again from socket continue if data == b"forward": @@ -108,6 +127,9 @@ while not wlan.isconnected(): print("Connecting to:", url) conn = uwebsockets.connect(url) +# set X seconds timeout for socket reads +conn.settimeout(1) + # send a ping to the robot print("Sending ping") conn.send("{'ping': true}")