from machine import Pin, ADC
import uasyncio as asyncio
from hcsr04 import HCSR04
from lcd1602 import LCD
lcd=LCD()
sensor = HCSR04(trigger_pin=2, echo_pin=3)
anPin = ADC(28)
pbPin = Pin(16,Pin.IN,Pin.PULL_UP)
ledR = Pin(12,Pin.OUT)
ledG = Pin(13,Pin.OUT)
async def blink_ledG():
while True:
ledG.value(1)
await asyncio.sleep(0.5)
ledG.value(0)
await asyncio.sleep(0.5)
async def display_splash_screen():
while True:
lcd.clear()
lcd.write(0,0,"Distance Counter ")
await asyncio.sleep(2)
async def display_standby():
lcd.clear()
lcd.write("User Input")
while button.value() == 1:
distance = int(10 + (adPin.read_u16() / 65535) * 90)
lcd.write(0,1 "Dist: {} cm". format (distance))
await asyncio.sleep(0.5)
async def display_distance():
while True:
distance = sensor.distance_cm()
lcd.clear()
lcd.write("Distance: {} cm".format(int(distance)), 0, 0)
if distance >= 10 and distance <= 100:
lcd.write("Object: {}".format("Yes" if object_detected else "No"), 0, 16)
ledR.value(1)
else:
lcd.write(0,1, "Object: No")
ledR.value(0)
await asyncio.sleep(0.1)
if button.value() == 0:
await asyncio.sleep(0.5)
return
async def main():
await display_startup()
asyncio.create_task(display_splash_screen())
await asyncio.sleep(2)
await display_standby()
while True:
await display_distance()
await display_standby()
loop = asyncio.get_event_loop()
loop.create_task(main())
loop.run_forever()