AM57x USB Device enumeration

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Can you let us know what HW platform you used? AM572x GP EVM? AM572x IDK EVM? Or your customized board? Did you use USB instance 1 or 2? I remember I tested it before using the USB dev project as it is (EVM's micro USB port connected to PC's USB port): PC detected it as a 16MB USB device, then formated it to copy files over. I didn't see an issue.

Regards, Eric

hello, Eric

thanks for your reply,

at first, we need to use TDA2xx SOC usb, and I found AM57xx usb and TDA2xx usb use the same usb ip core "DWC", so I think we can porting the AM57xx usb stack to TDA2xx SOC to make it work, then I modified the register layer for TDA2xx(modified the usb register base address and offset define according to TDA2xx), TDA2xx usb can initialize sucessfully(when TDA2xx usb port plug in, PC can detect it) but it is recognized unknow usb device.( We use HW platform : TDA2xx EVM, used usb instance 2)
Per we debugging ,found that usb can not transmit-receive data to PC.
I have two question:
1. what the process of usb transmit-receive data in driver code?
I check the code in AM57x usb driver, only config the register "DWC_USB_DEPCMDPARi " and "DWC_USB_DEPCMD_0 " ,is it OK?
2. Can TDA2xx soc use the AM57xx usb stack to make it work?

Thank you very much!!

Best regards,

Yue Zhao

hello all:
Today I used bus hound to monitor usb transmit data, when I plugged in the TDA2xx usb to PC ,PC didn't send any control command(such as Get Descriptor) . I plugged in kingston disk to PC, bus hound can capture the control command"Get Descriptor". what is the reason for it?

I think the process of usb enumeration:
at first, when PC detected one usb device plug in, it will notice the hub to reset the usb device.
Then PC will send control command "Get Descriptor" . Per I debugged with ccs, TDA2xx usb has reset already. But PC has no response.

Is it caused by the usb device reset unsucessfully?

Thanks a lot

best regards,

Yue Zhao