#####################################
##### IMPORT LIBRARIES
import machine
from utime import sleep
from ili9341 import Display, color565
from xglcd_font import XglcdFont

#####################################
##### PIN CONFIGURATIONS

# SPI configuration for ILI9341
sck = machine.Pin(18)
mosi = machine.Pin(23)
miso = machine.Pin(19)
spi = machine.SPI(1, baudrate=32000000, sck=sck, mosi=mosi, miso=miso)

# ILI9341 display control pins
rst = machine.Pin(32)
dc = machine.Pin(33)
cs = machine.Pin(5)

# Initialize the display
display = Display(spi, dc=dc, cs=cs, rst=rst)
arcadepix = XglcdFont('ArcadePix9x11.c', 9, 11)

# Potentiometer ADC pin
pot_pin = machine.ADC(machine.Pin(15))
pot_pin.atten(machine.ADC.ATTN_11DB)  # Allow full 0-3.3V range
pot_pin.width(machine.ADC.WIDTH_12BIT)  # 12-bit resolution (0-4095)

#####################################
##### MAIN ROUTINE

def main():
    while True:
        ili9341_potentiometer_display()

##########################################
#####  SUBROUTINES
##########################################

def ili9341_potentiometer_display():
    # Read potentiometer value
    pot_value = pot_pin.read()
    voltage = pot_value * (3.3 / 4095)

    # Print to serial monitor
    print("Potentiometer Value:", pot_value)
    print("Voltage:", round(voltage, 2), "V")

    # Display on TFT
    display.clear(color565(0, 0, 0))  # Black background

    display.draw_text(
        x=10,
        y=30,
        text="Pot Value: {}".format(pot_value),
        font=arcadepix,
        color=color565(255, 255, 0),  # Yellow
        background=color565(0, 0, 0)
    )

    display.draw_text(
        x=10,
        y=60,
        text="Voltage: {:.2f} V".format(voltage),
        font=arcadepix,
        color=color565(0, 255, 0),  # Green
        background=color565(0, 0, 0)
    )

    sleep(0.5)  # Small delay before next update

##########################################
#####  EXECUTE MAIN ROUTINE
##########################################

if __name__ == '__main__':
    main()