from machine import Pin
import time

time.sleep(0.01) # Wait for USB to connect
print("Hello, CIT!")

# Setup
led_a = Pin(2, Pin.OUT)  # LED A: steady for a while
led_b = Pin(4, Pin.OUT)  # LED B: blinking

# Timing parameters
led_a_duration = 1.5       # seconds to keep LED A on
blink_interval = 0.5     # seconds between LED B toggles

# Initial state
start_time = time.ticks_ms()
last_blink = start_time
led_b_state = False

# Turn on LED A
led_a.on()

while True:
    now = time.ticks_ms()

    # Turn off LED A after duration
    if time.ticks_diff(now, start_time) >= led_a_duration * 1000:
        led_a.off()

    # Toggle LED B on blink interval
    if time.ticks_diff(now, last_blink) >= int(blink_interval * 1000):
        led_b_state = not led_b_state
        led_b.value(led_b_state)
        last_blink = now