micro:bit output has no effect

[shaoziyang]

I have port micro:bit to Seeed Arch BLE board, same chip with micro:bit. REPL works fine, but GPIO output has no effect at all.

I use code below:

Code: Select all

while True:
    pin0.write_digital(1)
    sleep(20)
    pin0.write_digital(0)
    sleep(480)