Function startUsbHidInput

Tactility/Source/lvgl/UsbHidInput.cpp:278–324

}

void startUsbHidInput() {
    if (s_ctx != nullptr) return;

    auto* ctx = new UsbHidInputCtx();

    ctx->hid_queue = xQueueCreate(HID_EVENT_QUEUE_SIZE, sizeof(UsbHidEvent));
    if (!ctx->hid_queue) {
        LOGGER.error("failed to create HID event queue");
        delete ctx;
        return;
    }

    ctx->key_queue = xQueueCreate(KEY_EVENT_QUEUE_SIZE, sizeof(KeyEvent));
    if (!ctx->key_queue) {
        LOGGER.error("failed to create key event queue");
        vQueueDelete(ctx->hid_queue);
        delete ctx;
        return;
    }

    ctx->task_done = xSemaphoreCreateBinary();
    if (!ctx->task_done) {
        LOGGER.error("failed to create task done semaphore");
        vQueueDelete(ctx->hid_queue);
        vQueueDelete(ctx->key_queue);
        delete ctx;
        return;
    }

    struct Device* hid_dev = device_find_first_active_by_type(&USB_HOST_HID_TYPE);
    if (hid_dev) ctx->subscribed = usb_host_hid_subscribe(hid_dev, ctx->hid_queue);

    ctx->running = true;
    if (xTaskCreate(usbHidInputTask, "usb_hid_inp", TASK_STACK, ctx, TASK_PRIORITY, &ctx->task) != pdPASS) {
        LOGGER.error("failed to create task");
        ctx->running = false;
        if (hid_dev) usb_host_hid_unsubscribe(hid_dev, ctx->hid_queue);
        vQueueDelete(ctx->hid_queue);
        vQueueDelete(ctx->key_queue);
        vSemaphoreDelete(ctx->task_done);
        delete ctx;
        return;
    }

    s_ctx = ctx;
    LOGGER.info("started");
}

void stopUsbHidInput() {
    if (!s_ctx) return;