TMS320F28377D USB output using DMA

J. Gomez

Other Parts Discussed in Thread: TMS320F28377D

We ordered a TMS320F28377D evaluation board and I have been working on checking out some of the USB functionality. I am using device library version 1.10. Most of the device examples didn't work until I changed the USBStackModeSet to force device mode. I have the USB port talking now and I am now trying to connect the DMA. Now I found that the file F2837xD_dma_defines.h is missing event triggers for DMA to USB (ex. DMA_USB0EP1RX), I can get these values from the manual and fix the file for now.

So my questions are:

Is an update going to be available for the device library anytime soon?

Can I get an example of the USB port using the DMA?

We are looking into using this in a new version of our product and the current gating factors are USB throughput vs realtime cost and latency of the ADC.

Should I give up on the USB part until TI has finished more of the USB issues?

Thanks...John

over 11 years ago

0 Adam Haun over 11 years ago

TI__Expert 8950 points

John,

We've already written the update for F2837xD_dma_defines.h. It'll go out in the next release. I'm not sure when that will be; I'll ask someone on our software team to look into this.

Thanks,

0 J. Gomez over 11 years ago in reply to Adam Haun

Prodigy 225 points

Adam,

Thanks for the update, I hope that you have straightened out the issues with USBStackModeSet also, because USB devices don't enumerate in all the Device examples except for Bulk. Also the usb_dev_msc_cpu01 example doesn't seem to work.

I saw pieces of code for a USB audio device using DMA in the manual, is that example available or any example of a USB port using DMA?

Thanks…John