Number of interfaces is set 2,but return 1

[Anonymous]

const uint8_t CyFxUSBSSConfigDscr[] __attribute__ ((aligned (32))) =

{

    /* Configuration descriptor */

    0x09,                           /* Descriptor size */

    CY_U3P_USB_CONFIG_DESCR,        /* Configuration descriptor type */

    0x4f,0x00,                      /* Length of this descriptor and all sub descriptors */

    0x02,                           /* Number of interfaces */

    0x01,                           /* Configuration number */

    0x00,                           /* COnfiguration string index */

    0x80,                           /* Config characteristics - Bus powered */

    0x32,                           /* Max power consumption of device (in 8mA unit) : 400mA */

    /* Interface descriptor */

..............

}

I set       0x02,                           /* Number of interfaces */,but returned 1 and Length of this descriptor is also wrong

I don't know why

[SrinathS_16 · Accepted solution]

Hello,

- I have checked the behavior at my end and is working fine. Please check if you are comparing the descriptor information as the one in which in the device has enumerated. In your case, you have looked at the SS Configuration Descriptor. So please check if the device is enumerating in USB3.0 and not as USB2.0.

Best regards,

Srinath S