MCU-PLUS-SDK-AM243X: DFU - TOOL Configuration

Hi Karen,

Which SDK are you using? For AM243x MCU+ SDK, I don't see USB DFU is supported, please see:

https://software-dl.ti.com/mcu-plus-sdk/esd/AM243X/08_02_00_31/exports/docs/api_guide_am243x/USB_DEVICE_DRIVER.html#autotoc_md842

https://software-dl.ti.com/mcu-plus-sdk/esd/AM243X/08_02_00_31/exports/docs/api_guide_am243x/USB_DEVICE_DRIVER.html#autotoc_md847

I'm looping in our expert on this topic. Please note he's out of office until 4/6, so please expect a delayed response.

Regards,
Frank

Hi Karen,

The current MCU+ SDK does not support boot from USB DFU. The ROM bootloader may support DFU, but you will need to set the boot mode to "Boot from USB".

Best regards,

Ming 

Hi Ming,

Yes, you are rigth.  I set the boot mode to USB.  In Windows,  the corresponding USB shows at the starptup as am64x. To configure the port, 

I follow the ticket   "[FAQ] TDA4VM: The windows DFU tool and driver for TDA4 to configure the drive"

the EVM responds like this,  

I run the command without address (-s)

dfu-util -a 0 -R  -D c:\devtools\TI\Test_Files\sbl_example.tiimage

It seems that, there is a transfer but realy the files is not copied to flash.

Thansk for your feedback

Best Regards.

I use the Version mcu_plus_sdk_am243x_08_02_00_12.

Do you known, if  it will be possible in the future versions?

Best Regards

Karen

Hi Karen,

We never tested the USB (nor DFU) boot on AM243x. The instructions you followed is from Jacinto. It is possible that the AM243x RBL behaves differently than the J7 RBL. I will check with our AVV team to see how did we tested it on AM243x.

Officially, we do not support USB DFU for AM243x.

Best regards,

Ming

Hi Ming,

I'll be grateful, that you check it with your team, because we need the interface to copy the firmware to flash. 

Regards,

Karen

Hi Karen,

I will check with the software team on the USB DFU and get back to you.

Best regards,

Ming

Hi Karen,

Here is what I found in the AM64x TRM:

---------------

4.4.6.1 USB Bootloader Operation
The USB boot mode is used to read the boot image from external USB host.
See Section 4.4.6, USB Boot Device Configuration and Section 4.6.11, USB Boot Parameter Table for the
available configuration options.
More information about USB DFU protocol can be found at .
In DFU mode, the ROM will attempt an enumeration for 60 seconds, after which the boot mode will fail. If a
successful enumeration is achieved, the ROM Code will start reading from the external host as specified by the
BOOTMODE pins. It will continue reading data from the memory and storing it in internal RAM until a complete
image has been read. When the complete image has been read and found in good integrity, the ROM Code will
branch to the address defined in the Boot Info field of the boot header.

----------------

It means the USB-DFU does not do the flashing. It is up to the new firmware to update the flash.

Best regards,

Ming