from machine import Pin, #I2C
# from dht20 import DHT20
from neopixel import NeoPixel
from utime import sleep_ms
from random import uniform

import network
from BlynkLib import Blynk
from BlynkTimer import BlynkTimer

sw = 0
led = Pin(48, Pin.OUT)
# np = NeoPixel(Pin(48), 1)  # only 1 LED on board; GPIO48 ESP32-S3;
# ---------------------------------------------------------------------------
# i2c = I2C(1, scl=Pin(5), sda=Pin(4)) # OLED addr: 0x3c, DHT20 addr: 0x38
# dht20 = DHT20(0x38, i2c)
  
# def my_dht20():    
#     try:
#         measurements = dht20.measurements
#         return measurements['t'], measurements['rh']
#     except OSError as e:
#         print("Blad z DHT20:", e)
#         return 0.0, 0.0
# ===========================================================================  
WIFI_SSID = 'Wokwi-GUEST'
WIFI_PASS = ''

wifi = network.WLAN(network.STA_IF)
if not wifi.isconnected():
    print("Connecting to WiFi...")
    wifi.active(True)
    wifi.connect(WIFI_SSID, WIFI_PASS)
    while not wifi.isconnected():
        print('.',end='')
        sleep_ms(100)

print('\nIP:', wifi.ifconfig()[0])
# ===========================================================================
BLYNK_AUTH = 'your_auth_token'
blynk = Blynk(BLYNK_AUTH)

@blynk.on("connected")
def blynk_connected(ping):
    print('Blynk ready. Ping:', ping, 'ms')

@blynk.on("disconnected")
def blynk_disconnected():
    print('Blynk disconnected')

@blynk.on("V2")
def v2_write_handler(value):
    # print('Current value: {}'.format(value[0])) # value: <class 'list'> ['1']
    global sw
    sw = int(value[0])

timer = BlynkTimer()
# ---------------------------------------------------------------------------
def send_sensor():
    # temperature, humidity = my_dht20()
    global sw
    if sw:
        # np[0] = (0, 10, 0)
        # np.write()
        led.on()
        t = uniform(18, 25)
        h = uniform(40, 70)
        blynk.virtual_write(0, "{:.2f}".format(t))
        blynk.virtual_write(1, "{:.2f}".format(h))

        # blynk.virtual_write(0, "{:.2f}".format(temperature))
        # blynk.virtual_write(1, "{:.2f}".format(humidity))

        # np[0] = (10, 0, 10)
        # np.write()
        led.off()
        sleep_ms(300)
        led.on()
        # np[0] = (0, 10, 0)
        # np.write()
    else:
        led.off()
        # np[0] = (0, 0, 0)
        # np.write()

timer.set_interval(3, send_sensor) 
# ---------------------------------------------------------------------------
while True:
    blynk.run()
    timer.run()