USB data throughput

[jawadk]

Hi,

I am using the USB CDC example in my project, where I developed  my own application level communication protocol.

I have a problem with the data throughput, it's lower than I need.

Any suggestions please ?

Can I use the USBD_MSC instead of th eCDC class for that ?

Best Regards

JK

[Simonr]

Hi JK

If you check out this case on maximum USB data rates for the nRF52840, you can see that our tests suggest that you should be able to reach ~2Mbps over USB. What kind of speed are you seeing now, and what do you need/expect?

You can try setting APP_USBD_CONFIG_EVENT_QUEUE_ENABLE to 0 in sdk_config.h, and remove the call to app_usbd_event_queue_process() in the while loop of main()? That way we can check if it is the USB packet queueing that is holding up the data transfer.

Best regards,

Simon