USB port recognised but no data received

[Liam]

Hi All,

We have trying the usbd_cdc_acm example program.

It has custom VID and PID. When connected to a windows PC with the correct driver, it is recognised correctly and it can receive data from the PC. All good.

When we connect to the intended USB master device (not a PC), it is still recognised but it does not receive any data even though some is sent.

Is there any USB configuration which could stop just the actual receiving of data?

Any ideas please?

We are using SDK3.2 for thread and zigbee

kind regards

Liam

[Kenneth]

Hi,

I doubt it's easier, but I assume there is some while{..if(dtr)..} check or similar, I guess you can always try to simply remove the check and proceed and check if it works.

Kenneth

[Liam]

To finalise this, we dug around in the SDK code and removed the check.