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Reconnect to wifi if router drops #1105

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22 changes: 22 additions & 0 deletions micropython/examples/pico_enviro/enviro_all_mqtt.py
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Original file line number Diff line number Diff line change
Expand Up @@ -100,6 +100,10 @@ def status_handler(mode, status, ip): # noqa: ARG001
# connect to wifi
uasyncio.get_event_loop().run_until_complete(network_manager.client(WIFI_CONFIG.SSID, WIFI_CONFIG.PSK))

# Helper to check wifi connection
def wifi_connected():
return network_manager.isconnected()

while True:

# read BME688
Expand All @@ -121,6 +125,24 @@ def status_handler(mode, status, ip): # noqa: ARG001

# read particle sensor
particulate_reading = pms5003.read()

# --- WiFi reconnection section ---
if not wifi_connected():
display.set_pen(RED)
display.clear()
display.text("WiFi down! Atmpting reconnect...", 10, 10, WIDTH, scale=2)
display.update()
led.set_rgb(255, 128, 0)
try:
uasyncio.get_event_loop().run_until_complete(network_manager.client(WIFI_CONFIG.SSID, WIFI_CONFIG.PSK))
time.sleep(2)
error_message = ""
except Exception as wifi_error:
print("WiFi reconnect failed:", wifi_error)
error_message = f"WiFi reconnect failed: {wifi_error}"
led.set_rgb(255, 0, 0)
time.sleep(5)
continue # Skip this loop cycle if WiFi fails

if heater == "Stable" and ltr_reading is not None:
led.set_rgb(0, 0, 0)
Expand Down