- What is the request that is sent to the device (bRequest = 0x00 from trace). Please explain what this request corresponds to.
- Please let us know the USB class that the device conforms to.
- From the trace, it can be seen that there is no ACK from the device. Kindly, ensure that the class specific request (0x00) is handled in the device's firmware.
- When designing a class specific device, the requests specific to that class ought to be handled in the firmware appropriately.