can you provide the schematics of respeaker core v2 so that i can get a clear understand of how to configure the interface as my need?
We do not open source respeaker core v2 this moment. if you have any specific interface related questions, we can check it for you. thanks for understanding.
OK. I think it was CDC device though the only OTG device found is configured as a hub like the pasting below.
Is this the right port of the USB OTG interface?
T: Bus=01 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#= 1 Spd=480 MxCh= 1
B: Alloc= 0/800 us ( 0%), #Int= 0, #Iso= 0
D: Ver= 2.00 Cls=09(hub ) Sub=00 Prot=01 MxPS=64 #Cfgs= 1
P: Vendor=1d6b ProdID=0002 Rev= 4.04
S: Manufacturer=Linux 4.4.138-respeaker-r0 dwc2_hsotg
S: Product=DWC OTG Controller
C:* #Ifs= 1 Cfg#= 1 Atr=e0 MxPwr= 0mA
I:* If#= 0 Alt= 0 #EPs= 1 Cls=09(hub ) Sub=00 Prot=00 Driver=hub
E: Ad=81(I) Atr=03(Int.) MxPS= 4 Ivl=256ms
Here is the schematic for the usb/pwr. thanks.