while (true) { bool pin_state = port_pin_get_input_level(BUTTON_0_PIN); port_pin_set_output_level(LED_0_PIN, !pin_state); }
(
) {
pin_state = port_pin_get_input_level(BUTTON_0_PIN);
port_pin_set_output_level(LED_0_PIN, !pin_state);
}