TUSB9261DEMO: Consultation about Burner

Chongyu Long

Part Number: TUSB9261DEMO
Other Parts Discussed in Thread: TUSB9261

Tool/software:

Section 4.8 of the TUSB926x Flash Burner User's Guide reads "by using the" Dump SPI Flash Content..." users can extract the data currently stored on the SPI flash and save it into a file.”
I tried this feature through the Burner program and found that the exported file "TUSB926x_FW_v1.06_Dumped_SPI_Flash.hex" did contain firmware data that I had burned into the device earlier.

I have two questions about that.
1. Are the compiled firmware data and the files exported by this method encrypted?
2. The firmware is my secondary development, I do not want others to be able to get directly. How do I disable "Dump SPI Flash Content... " function？

8 months ago

+1 Nicholaus_Malone 8 months ago

TI__Mastermind 26385 points

1. Not by default, they are in Intel Hex format. Although, you are welcome to implement encryption yourself since you have access to the TUSB9261 source code, or disable firmware download as described below.

2. I do not have software expertise, but my assumption is you would modify the source code to disable the USB_HID_SETUP_DOWNLOAD_DATA command.

Regards,

Nicholaus

+1 Nicholaus_Malone 8 months ago in reply to Nicholaus_Malone

TI__Mastermind 26385 points

You may also check if you should disable the SCSI_TI_READ_FLASH command.

Regards,

Nicholaus

0 Nicholaus_Malone 8 months ago in reply to Nicholaus_Malone

TI__Mastermind 26385 points

Both are described here: TUSB9260 Flash Burner - User Guide (Rev. D) (ti.com)

0 Chongyu Long 8 months ago in reply to Nicholaus_Malone

Prodigy 150 points

You are right. Thank you very much.

By the way, do you know how can I use the UAS mode rather than the BOT mode?

The datasheet said that it can enable the UASP interface using a SET_INTERFACE request for alternate interface 1.

But I don't know how to use that request.

+1 Nicholaus_Malone 8 months ago in reply to Chongyu Long

TI__Mastermind 26385 points

Hi Chongyu,

You would typically program the host or driver to issue the SET_INTERFACE USB Interface command.

How to Send a USB Control Transfer - Windows drivers | Microsoft Learn

However, since you have the source code, you can force the UASP interface. Search for the potion of code that responds to the SET_INTERFACE command.

Regards,

Nicholaus

0 Chongyu Long 8 months ago in reply to Nicholaus_Malone

Prodigy 150 points

I make it in your suggest way. Thanks.

By the way, do you know how to how to make the Burner not recognize the device.

And the device can work in the same time?

+1 Nicholaus_Malone 8 months ago in reply to Chongyu Long

TI__Mastermind 26385 points

I took a quick glance at the source code. It looks like the Flashburner software looks for our TUSB9261 driver, and I'm not sure of a way you can prevent someone from installing our driver; however, you can change the VID/PID and other USB descriptors and so that it is not clear that you are using a TUSB9261.

You can also disable a lot of the functionality of the FlashBurner software by disabling features in the default firmware as we have discussed.

Regards,

Nicholaus

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TUSB9261DEMO: Consultation about Burner