# Project objectives:
#   Read inputs from 3 potentiometers and display their values to the console
#   Convert analog values to voltage and display them to the console
#
# Hardware and connections used:
#   Potentiometer SIG pins to GPIO Pins 26, 27, and 28 (capable of ADC)
#
# Programmer: Adrian Josele G. Quional

# modules
from machine import Pin, ADC
from time import sleep

# Create ADC objects for each potentiometer, specifying the GPIO pins for their SIG pins
pot_adc1 = ADC(Pin(26))
pot_adc2 = ADC(Pin(27))
pot_adc3 = ADC(Pin(28))

# Continuously read data from the potentiometers and display the values to the console
while True:
    # Read analog values from the potentiometers
    analog_value1 = pot_adc1.read_u16()
    analog_value2 = pot_adc2.read_u16()
    analog_value3 = pot_adc3.read_u16()

    # Convert analog values to voltage
    voltage1 = analog_value1 * (3.3 / 65535)
    voltage2 = analog_value2 * (3.3 / 65535)
    voltage3 = analog_value3 * (3.3 / 65535)

    # Display the values for all three potentiometers
    print(f"Potentiometer 1 - Analog value: {analog_value1}, Voltage: {voltage1}V")
    print(f"Potentiometer 2 - Analog value: {analog_value2}, Voltage: {voltage2}V")
    print(f"Potentiometer 3 - Analog value: {analog_value3}, Voltage: {voltage3}V")

    print("==========")
    sleep(1)