examples: Add treshold_alert for wsen-pads.

Author: Charly-sketch

lib/wsen-pads/examples/treshold_alert.py

@@ -0,0 +1,34 @@
+"""Monitor pressure continuously and print an alert when pressure drops below a configurable threshold (e.g. storm detection)."""
+
+from time import sleep
+from machine import I2C
+from wsen_pads import WSEN_PADS
+from wsen_pads.const import ODR_10_HZ
+
+PRESSURE_ALERT_HPA = 1021.8 # Alert threshold
+READ_INTERVAL_S = 1 # Time between printed readings
+
+i2c = I2C(1)
+sensor = WSEN_PADS(i2c)
+
+sensor.set_continuous(odr=ODR_10_HZ)
+
+print("Pressure monitor started")
+print("Alert threshold:", PRESSURE_ALERT_HPA, "hPa")
+
+alert_active = False
+
+while True:
+    pressure = sensor.pressure_hpa()
+
+    # Threshold detection
+    if pressure < PRESSURE_ALERT_HPA:
+        if not alert_active:
+            print("ALERT: pressure dropped below", PRESSURE_ALERT_HPA, "hPa")
+            alert_active = True
+    else:
+        if alert_active:
+            print("INFO: pressure back above", PRESSURE_ALERT_HPA, "hPa")
+        alert_active = False
+
+    sleep(READ_INTERVAL_S)