from machine import Pin
from utime import sleep

# Setup for LED pins
led = Pin(5, Pin.OUT)  # LED 1
led1 = Pin(9, Pin.OUT)  # LED 2

# Define the resistor value (same for both LEDs)
R = 330  # Resistor value in ohms

# Define supply voltage and LED forward voltage
Vcc = 3.3  # Supply voltage for Pi Pico
V_led = 2.0  # Approximate forward voltage for the LEDs (modify as needed)

# Function to calculate voltage across resistor and current
def calculate_values():
    # Voltage across LED (assumed forward voltage of LED is 2V)
    V_LED = V_led

    # Voltage across resistor (remaining voltage after LED's forward voltage)
    V_resistor = Vcc - V_LED  

    # Current through the resistor (same current flows through both LED and resistor in series)
    current = V_resistor / R  # Apply Ohm's Law: I = V / R
    current_mA = current * 1000  # Convert current to milliamps (mA)

    return V_LED, V_resistor, current_mA

while True:
    led.toggle()  # Toggle LED 1
    led1.toggle()  # Toggle LED 2
    
    # Calculate and display voltage across LED and resistor, and current
    V_LED, V_resistor, current_mA = calculate_values()
    
    # Output for LED 1
    print(f"LED 1 - Voltage across LED: {V_LED:.2f}V")
    print(f"LED 1 - Voltage across Resistor: {V_resistor:.2f}V")
    print(f"LED 1 - Estimated Current: {current_mA:.2f}mA")
    
    # Output for LED 2 (same values as LED 1)
    print(f"LED 2 - Voltage across LED: {V_LED:.2f}V")
    print(f"LED 2 - Voltage across Resistor: {V_resistor:.2f}V")
    print(f"LED 2 - Estimated Current: {current_mA:.2f}mA")

    sleep(0.5)  # Wait for 0.5 seconds before toggling again