Looking for a skeleton for Host MSC, Device MSC for the USB OTG controller

Hello Kiran,

Can you first check the board with the following example to weed out any hardware or connection issue, before proceeding for software checks?

D:\ti\TivaWare_C_Series-2.1.1.71\examples\boards\dk-tm4c129x\usb_host_msc

Regards
Amit

Hi Amit,

I did not enable uDMA controller for the MSC.
Thanks for the reply.

Thanks
Kiran

Hello Kiran,

I did not get what you meant by did not enabled UDMA!!!

Regards
Amit

Hi Amit,

To implement the OTG - MSC class for TM4C, I was using OTG - HID class implementation which is provided in C:\ti\TivaWare_C_Series-2.0.1.11577\examples\boards\dk-tm4c129x\usb_otg_mouse. In this HID class example uDMA is not under use. As per the MSC class documentation DMA is needed. For that I've added these following

#pragma DATA_ALIGN(g_sDMAControlTable, 1024)
tDMAControlTable g_sDMAControlTable[6];

SysCtlPeripheralEnable(SYSCTL_PERIPH_UDMA);
uDMAEnable();
uDMAControlBaseSet(g_sDMAControlTable);

Thank you,
Best Regards,
Kiran

Hello Kiran

Thanks for the confirmation and follow up post

Regards
Amit