Can’t detect USB devices while DFU is disabled

[FireRun]

Hi,

I follow the tutorial guidelines and compiled and generated firmware in xTIMecomposer 14.4.1 with sw_usb_audio-sw_6.15.2_, and then download it to my self-made XU208 device. It works well, as I expected.

However, when I disable the DFU function. It cannot be detected when connecting to the computer or smartphone.

#define DFU 0

What I can confirm is that both the ADC and DAC on my board have been properly initialized, but the problem is that xu208 has lost its connection to the host.

I would like to seek a solution that with DFU disabled.

Thanks.