print("This program will integrate ESP32 with ultrasonic sensor")

import hcsr04 #ultrasnoic library
import ssd1306  #oled library
from utime import sleep
from machine import SoftI2C, Pin, PWM # pulse width modulation

ultrasonic_sensor = hcsr04.HCSR04(trigger_pin=13, echo_pin=27, echo_timeout_us=500*2*30)


i2c_oleddisplay = SoftI2C(scl=Pin(22), sda=Pin(21))

oled_width = 128 #based on spec
oled_height = 64 #based on spec

oled = ssd1306.SSD1306_I2C(oled_width, oled_height, i2c_oleddisplay)

buzzer = PWM(Pin(23), Pin.OUT)
from machine import Pin
from utime import sleep #utime since upython is used

led_green = Pin(14,Pin.OUT) #Built in LED is connected to GPIO 14
led_blue = Pin(26,Pin.OUT)
led_red = Pin(12,Pin.OUT)
led_green = Pin(26, Pin.OUT)
led_yellow = Pin(25, Pin.OUT)
led_orange = Pin(33, Pin.OUT)
led_white = Pin(18, Pin.OUT)
led_magenta = Pin(19, Pin.OUT)
led_red = Pin(5, Pin.OUT)


while True:

    led_yellow.on()
    sleep(0.3)
    led_blue.off()
    led_red.off()
    led_green.off()
    sleep(0.3)

    led_blue.on()
    sleep(0.8)
    led_red.off()
    led_yellow.off()
    led_green.off()
    sleep(0.8)

    led_red.on()
    sleep(0.5)
    led_blue.off()
    led_yellow.off()
    led_green.off()
    sleep(0.5)

    led_green.on()
    sleep(0.5)
    led_blue.off()
    led_yellow.off()
    led_red.off()
    sleep(0.5)

    led_magenta.on()
    sleep(0.5)
    led_blue.off()
    led_yellow.off()
    led_red.off()
    sleep(0.5)


    led_white.on()
    sleep(0.5)
    led_blue.off()
    led_yellow.off()
    led_red.off()
    sleep(0.5)

    led_orange.on()
    sleep(0.5)
    led_blue.off()
    led_yellow.off()
    led_red.off()
    sleep(0.5)