import time
import ds18x20
import onewire
from machine import Pin, I2C
from ssd1306 import SSD1306_I2C

sda = Pin(21)
scl = Pin(22)
i2c = I2C(0, sda=sda, scl=scl, freq=400000)
oled = SSD1306_I2C(128, 64, i2c)

ow = onewire.OneWire(Pin(15))
ds = ds18x20.DS18X20(ow)
roms = ds.scan()

print("roms=",roms) 

def oled_text(text):
    oled.fill(0)
    oled.text(text, 10, 10)
    oled.show() 

   

while(1):
    
    ds.convert_temp()
    time.sleep(0.750)
   
    for rom in roms:        
        temp=ds.read_temp(rom)
        print(temp) 
        oled_text(str(temp))     
            
    print()
    time.sleep_ms(5000)