from machine import Pin, I2C, ADC
import ssd1306

# Pin 34: sensor soil moisture
adc = ADC(Pin(34))
adc.atten(ADC.ATTN_11DB)  # 0-3.3V

# ESP32 Pin assignment 
i2c = I2C(0, scl=Pin(22), sda=Pin(21))

oled_width = 128
oled_height = 64
oled = ssd1306.SSD1306_I2C(oled_width, oled_height, i2c)

oled.text('Hello, Wokwi!', 10, 10)      
oled.show()

def convert_to_moisture(value):
    return round(value/4, 2)


while True:
    value = adc.read()
    soil = convert_to_moisture(value)
    data = {"moisture": soil}
    print("Sending:", data)
    oled.fill(0)
    oled.text('soil moisture:', 10,10)
    oled.text(str(soil), 10,30)
    oled.show()