Check whether USB host is connected or not

[gianluca_panett]

Hi,

I use a i.MX RT105x microcontroller with USB OTG configured as Virtual COM Port device.

How can I detect in my application whether my PC is connected to the uC or not?

Is there a way to read the state of the VBUS pin (without connecting it to a GPIO)?

Thanks.

[victorjimenez · Accepted solution]

Hello Gianluca Panetta, 

I recommend you refer to the example dev_cdc_vcom_freertos from the SDK. In this example, we detect when the host is connected and configured with the following statements. 

if ((1 == s_cdcVcom.attach) && (1 == s_cdcVcom.startTransactions))‍

Have a great day,
Victor

-------------------------------------------------------------------------------
Note:
- If this post answers your question, please click the "Mark Correct" button. Thank you!

- We are following threads for 7 weeks after the last post, later replies are ignored
Please open a new thread and refer to the closed one, if you have a related question at a later point in time.
-------------------------------------------------------------------------------