Method begin

lib/psx_controller/psx_controller.cpp:115–118

    controller = this;
}
void PSXController::begin() {
    gpio_set_irq_enabled_with_callback(m_ackPin, GPIO_IRQ_EDGE_RISE, true, &attentionInterrupt);
    autoShiftData(commandPollInput, sizeof(commandPollInput));
}
void PSXController::end() {
    gpio_set_irq_enabled(m_ackPin, GPIO_IRQ_EDGE_RISE, false);
    cancel_alarm(timeout_alarm_id);