Cannot connect KL730 board with host PC using USB cable

Dongkyun Kim · June 10

Hello, I'm having difficulties connecting KL730 board with my host PC (both ubuntu 18.04, Window 10).

(ubuntu 18.04)

With all dependencies (https://doc.kneron.com/docs/#plus_python/introduction/install_dependency/) installed, when I enter script below, I cannot find any devices while USB connected to the board.

sudo sh KneronDFUT.sh

what I have tried

various boot mode schemes (SPI NAND Port 0 Quad, SD->SPI NAND Port 0 1-bit, USB2 or 3 Fastboot with BL2, BL31, Uboot file transferred).
Connection with UART-USB was fine, but sh KneronDFUT.sh fails neither.

(Window 10)

I could not find device using Zadig while USB connected with KL730 board.

Eagerly reaching out to get proper solutions.

Sincerely.

Maria Chen · June 11

Hi Dongkyun,

What is showing up on your UART log? Please make sure that your KL730 firmware is the one used for Kneron PLUS.

The file location is: SDK\04_Firmware\ubifs\fw_plus_nand_4k.ubifs

As for flashing firmware, please refer to this documentation: KL730_Development_Environment_User_Guide.pdf

Thanks!

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