import machine 
import time
import json

DEVICE_ID = "PICO_W_BLDG_01"
LOCATION  = "Server_Room"

sensor_temp = machine.ADC(4)
conversion_factor = 3.3 / 65535

print("Experiment 4.2: JSON Packaging Started...")
print("-" * 40)

while True:
  reading = sensor_temp.read_u16() * conversion_factor
  temperature = 27 - (reading - 0.706) / 0.001721

  data_dictionary = {
    "sensor_id": DEVICE_ID,
    "location" : LOCATION,
    "telemetry":{
      "temp": round(temperature, 2),
      "unit": "Celsius"
    },
    "timestamp_ms": time.ticks_ms(), 
    "status": "OK"
  }
  json_packet = json.dumps(data_dictionary)

  print(f"RAW DICTIONARY: {data_dictionary}")
  print(f"JSON PACKET:    {json_packet}")

  print(f"DATA TYPE:      {type(json_packet)}")

  print("-" * 40)
  time.sleep(5)