from machine import Pin, ADC
import utime
from neopixel import NeoPixel
#from time import sleep

trigger = Pin(18, Pin.OUT)     #  gpio 18  =  pico pin 24
echo =    Pin(17, Pin.IN)      #  gpio 17  =  pico pin 22

NUMBER_PIXELS_TOP = 100
NUMBER_PIXELS_SIDE = 100
LED_PIN_SIDE = 6 #gpio 6
LED_PIN_TOP = 7 #gpio 7

brightness = 100
red = (brightness, 0, 0)
blue = (0, 0, brightness)
last_top = 0
last_side = 0

# distance sensor readings
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
   print("The distance from object is ",distance)

while True:
    ()
    utime.sleep(.5)
    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
    print("The distance from object is ",distance)
    ###### old pot to led strip code  
    #while True:
    potentiometer_value = machine.ADC(27)  #  GPIO 27 = Pico pin 32
    potreading = potentiometer_value.read_u16()     
    #print("The potentiometer reading is ",potreading*5/65000,"something")
    # print("The distance from object is ",distance/2.54,"inches\n\n") 
    # i = int(potreading*5/65000)
    i = int(distance)
    #i = distance
    strip = NeoPixel(Pin(LED_PIN_TOP), NUMBER_PIXELS_TOP)
    strip[last_top] = (0,0,0)
    strip[i] = red
    strip.write()
    last_top = i
    print(i)

   # j = int(potreading*39/65000)
    j = int(distance)
    side = NeoPixel(Pin(LED_PIN_SIDE), NUMBER_PIXELS_SIDE)
    side[last_side] = (0,0,0)
    side[j] = blue
    side.write()
    last_side = j