LP-AM243: USB DFU problem

Larry Chen

Prodigy 220 points

Part Number: LP-AM243
Other Parts Discussed in Thread: UNIFLASH

Hi all TI expert,

I followed the steps outlined in the provide guide to install DFU flash-related tool, but encountered an issue

https://software-dl.ti.com/mcu-plus-sdk/esd/AM243X/latest/exports/docs/api_guide_am243x/SDK_DOWNLOAD_PAGE.html

I'm using a Windows system, and my dfu-util version is 0.9.

In the section "Steps to install windows generic USB drivers", I couldn't locate the "AM64x DFU" item as mentioned in the guide.

I've make sure to set the LP board to DFU BOOT MODE and power cycled the board.

\code
BOOTMODE [ 1 :  8 ] (SW4) = 0101 0000
\endcode

Could you please help me identify what I might be doing wrong?

over 1 year ago

0 Ming Wei over 1 year ago

TI__Mastermind 47395 points

Hi Larry,

Did you install the Zadig suggested below?

Best regards,

Ming

0 Larry Chen over 1 year ago in reply to Ming Wei

Prodigy 220 points

Hi Ming Wei,

Yes, I do set the WinUSB in Zading.

Best regard,

Larry

0 Hang Yang over 1 year ago in reply to Ming Wei

TI__Intellectual 1781 points

Hi Ming,

Any update on this thread? I have the same problem too.

I've checked the following:

Use Zadig from AM243x MCU+ SDK 09.00.00 page
Set launchpad in boot mode
Installed dfu-util

Thanks,

Hang.

0 Keval Joshi over 1 year ago in reply to Hang Yang

TI__Prodigy 180 points

Hello Hang, Larry,

Please refer to the AM243x-LP SDK doc and User guide mentioned below.

Documentation link

AM243x-LP USE guide link

The potential problem could be as follows.

AM243x-LP board uses same C-Type port for USB as well as power delivery. Thus when using USB C-TYPE for USB operations we have to make sure that the host port is capable of supplying required power.

Can you please confirm that the board is powered ON and yellow LED is glowing when you connect Host PC via USB C-Type cable. ?

Regards,
K.Joshi

0 Hang Yang over 1 year ago in reply to Keval Joshi

TI__Intellectual 1781 points

Hi Joshi,

Thank you for the information, I can install driver now after checking the power delivery.

I've proceeded to the step where I use usb_dfu_uniflash.py --cfg=default_dfu_ospi.cfg to load the flash writer and application.

However, it stuck at "waiting for DFU device to be enumerated" after loading the flash writer:

As I understand it, the flash writer should be running on the board to receive the application image. It seems that the flash writer is not running properly on the board.

I've installed WCID driver for "AM64x DFU" and "AM64x-AM243x DFU" in Zadig.

Any idea how to solve this problem?

Thanks,

Hang.

0 Hang Yang over 1 year ago in reply to Hang Yang

TI__Intellectual 1781 points

Hi Joshi,

I've solved this problem by installing driver in Zadig.

I guess both "WCID driver" and "driver" need to be installed to get DFU device enumerated.

Thank you,

Hang.

0 Keval Joshi over 1 year ago in reply to Hang Yang

TI__Prodigy 180 points

Thanks ,

Glad to help

Regards,
K.Joshi

0 Larry Chen over 1 year ago in reply to Keval Joshi

Prodigy 220 points

Hi Keval,

I'm still encountering the problem which can't find "AM64x DFU" in Zading,

Below is the status of the LEDs on my LP board, I've connected the C-type port to an AC adapter, outputting at 5.0V=3.0A, and the micro USB is connected to my PC,

could you help me troubleshoot if I'm doing anything wrong?

0 Hang Yang over 1 year ago in reply to Larry Chen

TI__Intellectual 1781 points

Hi Larry,

I've been through DFU process. I believe you should connect type-c to PC while ensuring power supply. Micro USB is not necessary until the last step.

+1 Keval Joshi over 1 year ago in reply to Hang Yang

TI__Prodigy 180 points

Hi Larry,

Yes what Hang mentioned is correct and micro B cable is not necessary.

USB2.0 Port is coupled with power supply port thus the LP board will be powered by PC's USB host port.

Please make sure that the USB C cable is connect to above mentioned type of PC's USB host port.

Regards,
K.Joshi

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LP-AM243: USB DFU problem