About winUSB issue with MIMX1172

[LiXifeng]

I want to implement the winUSB device driver on the MIMXRT1172. Currently, I'm working on the routine cdc_vcom_freertos, the PC can enumerate MIMXRT1172 as a winUSB device, but it can only receive data and cannot send it. The returned status is busy each time it is sent (kStatus_USB_Busy).

Can you help me with this？

thanks!

[jeremyzhou]

Hi @LiXifeng ，
Thank you for your interest in NXP Semiconductor products and for the opportunity to serve you.
1) Can you help me with this
-- Did you test the cdc_vcom_freertos which resides in the SDK library? And the demo doesn't work well, is it right?
Have a great day,
TIC

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[LiXifeng · Accepted solution]

The problem has been solved ,it's because of the software of computer did not read the data sent by 1172 in time. The 1172 should be sent in blocking mode. Therefore, the bus busy error occurs. It will be solved after modifying the software of PC.

The demo cdc_vcom_freertos works well!

Thanks !