from machine import Pin, I2C
from ssd1306 import SSD1306_I2C
from lcdapi import LcdApi
from pico_i2c_lcd import I2cLcd
import utime
trigger = Pin(7, Pin.OUT)
echo = Pin(6, Pin.IN)
i2c = I2C(0, scl=Pin(1), sda=Pin(0), freq=200000)
print("I2C Address : "+hex(i2c.scan()[0]).upper())
print("I2C Configuration: "+str(i2c))
def ultrasonnic():
timepassed=0
trigger.low()
utime.sleep_us(2)
trigger.high()
utime.sleep_us(10)
trigger.low()
while echo.value() == 0:
signaloff = utime.ticks_us()
while echo.value() == 1:
signalon = utime.ticks_us()
timepassed = signalon - signaloff
return timepassed
WIDTH = 128
HEIGHT = 64
oled = SSD1306_I2C(WIDTH, HEIGHT, i2c)
def ultra():
trigger.low()
utime.sleep_us(2)
trigger.high()
utime.sleep_us(5)
trigger.low()
while echo.value() == 0:
signaloff = utime.ticks_us()
while echo.value() == 1:
signalon = utime.ticks_us()
timepassed = signalon - signaloff
distance = (timepassed * 0.0343) / 2
return distance
while True:
oled.fill(0)
measured_time = ultrasonnic()
distance_cm = (measured_time * 0.0343) / 2
distance_cm = round(distance_cm,2)
oled.text("Distance",20,15)
oled.text(str(distance_cm)+" cm",20,35)
oled.show()
utime.sleep(1)