import machine
import time
import json
from machine import Pin
adc = machine.ADC(Pin(26))
THESHOLD = 500
last_sent_value = 0
def simulate_cloud_processing(packet):
    data json.loads(packet)
    val = data["raw_value"]
    if val > 60000:
        print(f">>> [CLOUD ALERT] critical pressure at {val}! shutting down system.")
    else:
        print(f" [CLOUD LOG] Normal operation recorded for {data['id']})
print("Experiment 4.2: Edge Filtering with potentiometer startd...")
print("_" * 50)
while True:
    current_value = adc.read_u16()
    diff = abc(current_value - last_sent_value)
    if diff > THESHOLD:
        packet = json.dumps({
            "id": "VALUE_01",
            "raw_value": current_value,
            "event": "significant  change"
        })
        print(f"EDGE: pot moved! change = {diff}. sending to cloud...")
        simulate_cloud_processing(packet)
        last_sent_value = current_value
    else:
        print(f"EDGE: minor pot movement ({diff}). Data filtered locally.")
    time.sleep(2)