Flashing‐Yocto‐on‐emmc‐for‐LEC‐i.MX8MM

Linux Host

1 Download the latest pre-built Yocto image

• LEC-IMX8MM. The provided image is based on latest version (Yocto Scarthgap)
• This image made for I-Pi SMARC Carrier + LEC-IMX8MM Module.

2. Download the latest pre-built u-boot image

• LEC-IMX8MM. The provided u-boot image is based on latest version (Yocto Scarthgap)
• This image made for I-Pi SMARC Carrier + LEC-IMX8MM Module.

3. Download the uuu tool

Click here to download the UUU tool and extract the files. After extracting the files, copy them to /home directory.

Your development host must be connected to your target board via a micro USB OTG cable and the board must be powered with a power cable.

To run the UUU tool, go to the downloaded directory and type the following commands on the linux terminal.

#sudo cp ~/Downloads/uuu /usr/bin
#sudo chmod +x /usr/bin/uuu

Set the Board to Recovery Mode and using these UUU commands, you can verify the USB devices and flash the image to eMMC.

#uuu -lsusb
#sudo ./uuu -b emmc_all flash.bin imx-image-multimedia-lec-imx8mm.wic

4. DIP switch/Jumper configuration

It supports several boot devices on IPI Smarc carrier board .

• For IPI SMARC carrier board: selection of a specific boot device is defined by the switches , as follows:

  boot device	SW1	SW2	SW3	SW4
  Recovery/serial download mode	OFF	OFF	OFF	ON
  eMMC Mode	ON	OFF	OFF	OFF