"""
https://wokwi.com/projects/402030690974832641
"""

import time
from machine import ADC, Pin, freq



# # Set the clock frequency to 250 MHz
# freq(250_000_000)


# Initialize the ADC (ADC0 is connected to GPIO26)
adc_0 = ADC(Pin(26))
adc_1 = ADC(Pin(27))

# Set GPIO2 and GPIO3 as outputs for input multiplexers
mux_a = Pin(2, Pin.OUT)
mux_b = Pin(3, Pin.OUT)


def time_adc_read(num_reads=1_000):
    t0 = time.ticks_us()  # Get the start time in microseconds
    for _ in range(num_reads):
        adc_0.read_u16()  # Perform ADC read
    t1 = time.ticks_us()  # Get the end time in microseconds
    dt = time.ticks_diff(t1, t0)  # Calculate the elapsed time
    time_per_read = dt / num_reads
    return time_per_read


def set_input_channel(channel):
    if channel == 0:
        mux_a.off()
        mux_b.off()
    elif channel == 1:
        mux_a.on()
        mux_b.off()
    elif channel == 2:
        mux_a.off()
        mux_b.on()
    else:
        mux_a.on()
        mux_b.on()


def read_adcs():
    adc_value_0 = adc_0.read_u16()
    adc_value_1 = adc_1.read_u16()
    voltage_0 = adc_value_0 * 3.3 / 65535
    voltage_1 = adc_value_1 * 3.3 / 65535
    print("ADC Voltages: {:.2f} {:.2f}".format(voltage_0, voltage_1))


def check_dacs():
    print()
    print()
    for channel in range(3):
        set_input_channel(channel)
        time.sleep(0.2)
        read_adcs()
        print()
    time.sleep(1)


while True:
    # print(f'Time: {time_adc_read()} µs')
    check_dacs()