one-wire

main.py

import time
import board
import busio
import adafruit_ds18x20
from adafruit_onewire.bus import OneWireBus
import microcontroller

ds18b20_pin = board.D2
ow_bus = OneWireBus(ds18b20_pin)
devices = ow_bus.scan()
sensors = []

for device in devices:
    if adafruit_ds18x20.is_ds18x20(device):
        sensors.append(adafruit_ds18x20.DS18X20(device))

if len(sensors) == 0:
    print("No DS18B20 devices found.")
else:
    print(f"Found {len(sensors)} DS18B20 sensors.")

while True:
    try:
        for i, sensor in enumerate(sensors):
            temperature = sensor.temperature
            print(f"Sensor {i+1}: {temperature:.2f} °C")
        
        time.sleep(2)

    except Exception as e:
        print("Error: ", e)
        time.sleep(5)  # Wait before retrying