The ConnectCore 6UL is shipped without a default operating system loaded. Only U-Boot is flashed in the device. This step demonstrates how to install Digi Embedded Yocto in your ConnectCore 6UL.
1. Establish a serial connection with your device
Open a serial connection with the device. You can use any serial terminal program such as Tera Term, Minicom, CoolTerm, or HyperTerminal.
PuTTY terminal program is not recommended due to an incompatibility with the USB/serial driver. |
Open a serial connection with the following settings:
Parameter | Value |
---|---|
Port |
Serial port where the device is connected |
Baud rate |
115200 |
Data bits |
8 |
Parity |
None |
Stop bits |
1 |
Flow control |
None |
2. Download the firmware
To access firmware images, please fill out the following form to provide some information so we can better understand your project needs.
If the form doesn’t load after a few seconds, you may need to refresh the page. Contact Digi Support Services if you are not able to access the firmware images. |
3. Program the firmware
There are multiple methods of programming the firmware to the target:
-
Use the Universal Update Utility (UUU) through a USB connection to your development PC.
-
Use a microSD card to install the firmware directly in the target.
-
Use USB mass storage to install the firmware directly in the target.
Program the firmware using UUU
These instructions assume that the target U-Boot version is v2020.04 or higher, where the fastboot command is available.
|
-
Decompress the zip file in a directory of your choice.
-
Download the latest Universal Update Utility (UUU), a software tool from NXP.
UUU version should be 1.5.11 or higher. -
Place the
uuu
executable in a directory in your PATH, such as/usr/bin
. -
Install
udev
rules to allow any user to runuuu
to access the USB port:$ sudo sh -c "uuu -udev >> /etc/udev/rules.d/70-uuu.rules" $ sudo udevadm control --reload
-
Connect a micro USB cable to your development PC and the other end to the target USB OTG connector.
-
Reset the device by pressing the reset button on the board and immediately press any key in the serial terminal to stop the auto-boot process. The U-Boot bootloader prompt displays:
U-Boot dub-2020.04-r6.1 (Sep 19 2023 - 07:12:31 +0000) CPU: i.MX6UL rev1.2 528 MHz (running at 396 MHz) CPU: Industrial temperature grade (-40C to 105C) at 32C Reset cause: POR I2C: ready DRAM: 256 MiB MCA: HW_VER=1 FW_VER=1.19 PMIC: PFUZE3000 DEV_ID=0x30 REV_ID=0x11 NAND: 256 MiB MMC: FSL_SDHC: 0 In: serial Out: serial Err: serial Model: Digi International ConnectCore 6UL SBC. ConnectCore 6UL SOM variant 0x06: Industrial Ultralite 528MHz, 256MB NAND, 256MB DDR3, -40/+85C, Wireless, Bluetooth Board version 3, ID 135 Boot device: NAND Net: FEC0 [PRIME] Fastboot: Normal Normal Boot Hit any key to stop autoboot: 0 =>
Information in the console log may vary. -
On the target, in U-Boot, execute the following command:
=> fastboot 0
-
On your development PC, change to the directory where you extracted the ZIP file:
$ cd <zip-folder>
-
Run the
install_linux_fw_uuu.sh
script with-h
parameter to check the syntax:$ ./install_linux_fw_uuu.sh -h ############################################################ # Linux firmware install through USB OTG # ############################################################ Usage: ./install_linux_fw_uuu.sh [options] Options: -b Activate bootcount mechanism (3 boot attempts). -d Install firmware on dualboot partitions (system A and system B). (Implies -b). -h Show this help. -i <dey-image-name> Image name that prefixes the image filenames, such as 'dey-image-qt', 'dey-image-webkit', 'core-image-base'... Defaults to 'dey-image-qt' if not provided. -k <dek-filename> Update includes dek file. (implies -t)." -n No wait. Skips 10 seconds delay to stop script. -t Install TrustFence artifacts. -u <u-boot-filename> U-Boot filename. Auto-determined by variant if not provided.
-
To program the default image files (dey-image-qt):
$ ./install_linux_fw_uuu.sh
-
Once the firmware is installed, the device boots automatically. The default username is root with no password.
Program the firmware using uSD card
-
Decompress the zip file.
-
Place the decompressed files in the root of a FAT-formatted microSD card and insert it in the microSD socket of the board.
-
Reset the device by pressing the reset button on the board and immediately press any key in the serial terminal to stop the auto-boot process. The U-Boot bootloader prompt displays:
U-Boot dub-2020.04-r6.1 (Sep 19 2023 - 07:12:31 +0000) CPU: i.MX6UL rev1.2 528 MHz (running at 396 MHz) CPU: Industrial temperature grade (-40C to 105C) at 32C Reset cause: POR I2C: ready DRAM: 256 MiB MCA: HW_VER=1 FW_VER=1.19 PMIC: PFUZE3000 DEV_ID=0x30 REV_ID=0x11 NAND: 256 MiB MMC: FSL_SDHC: 0 In: serial Out: serial Err: serial Model: Digi International ConnectCore 6UL SBC. ConnectCore 6UL SOM variant 0x06: Industrial Ultralite 528MHz, 256MB NAND, 256MB DDR3, -40/+85C, Wireless, Bluetooth Board version 3, ID 135 Boot device: NAND Net: FEC0 [PRIME] Fastboot: Normal Normal Boot Hit any key to stop autoboot: 0 =>
Information in the console log may vary. -
To install the default firmware images (dey-image-qt) into the internal NAND, run the following command:
=> run install_linux_fw_sd
To program other images, set the variable
image-name
to the DEY image name (such asdey-image-webkit
orcore-image-base
) before running the script.=> setenv image-name core-image-base => run install_linux_fw_sd
-
Once the firmware is installed, the device boots automatically. The default username is root with no password.
During installation, error messages appear when the installation process attempts to override MAC addresses. These messages are expected.
## Resetting to default environment oldval: 00:40:9D:7D:17:9A defval: 00:04:f3:ff:ff:fa ## Error: Can't overwrite "ethaddr" himport_r: can't insert "ethaddr=00:04:f3:ff:ff:fa" into hash table oldval: 00:40:9D:7D:17:9B defval: 00:04:f3:ff:ff:fb ## Error: Can't overwrite "eth1addr" himport_r: can't insert "eth1addr=00:04:f3:ff:ff:fb" into hash table oldval: 00:40:9D:7D:17:9C defval: 00:04:f3:ff:ff:fc ## Error: Can't overwrite "wlanaddr" himport_r: can't insert "wlanaddr=00:04:f3:ff:ff:fc" into hash table oldval: 00:40:9D:7D:17:9D defval: 00:04:f3:ff:ff:fd ## Error: Can't overwrite "btaddr" himport_r: can't insert "btaddr=00:04:f3:ff:ff:fd" into hash table
Program the firmware using USB mass storage
These instructions assume that the target U-Boot version is v2020.04 or higher, where USB support is available. |
Follow these steps to install Yocto in the device:
-
Decompress the zip file.
-
Place the decompressed files in the root of a FAT-formatted USB mass storage and insert it in the USB host connector of the board.
-
Reset the device by pressing the reset button on the board and immediately press any key in the serial terminal to stop the auto-boot process. The U-Boot bootloader prompt displays:
U-Boot dub-2020.04-r6.1 (Sep 19 2023 - 07:12:31 +0000) CPU: i.MX6UL rev1.2 528 MHz (running at 396 MHz) CPU: Industrial temperature grade (-40C to 105C) at 32C Reset cause: POR I2C: ready DRAM: 256 MiB MCA: HW_VER=1 FW_VER=1.19 PMIC: PFUZE3000 DEV_ID=0x30 REV_ID=0x11 NAND: 256 MiB MMC: FSL_SDHC: 0 In: serial Out: serial Err: serial Model: Digi International ConnectCore 6UL SBC. ConnectCore 6UL SOM variant 0x06: Industrial Ultralite 528MHz, 256MB NAND, 256MB DDR3, -40/+85C, Wireless, Bluetooth Board version 3, ID 135 Boot device: NAND Net: FEC0 [PRIME] Fastboot: Normal Normal Boot Hit any key to stop autoboot: 0 =>
Information in the console log may vary. -
To install the default firmware images (dey-image-qt) into the internal NAND, run the following command:
=> run install_linux_fw_usb
To program other images, set the variable
image-name
to the DEY image name (such asdey-image-webkit
orcore-image-base
) before running the script.=> setenv image-name core-image-base => run install_linux_fw_usb
-
Once the firmware is installed, the device boots automatically. The default username is root with no password.
During installation, error messages appear when the installation process attempts to override MAC addresses. These messages are expected.
## Resetting to default environment oldval: 00:40:9D:7D:17:9A defval: 00:04:f3:ff:ff:fa ## Error: Can't overwrite "ethaddr" himport_r: can't insert "ethaddr=00:04:f3:ff:ff:fa" into hash table oldval: 00:40:9D:7D:17:9B defval: 00:04:f3:ff:ff:fb ## Error: Can't overwrite "eth1addr" himport_r: can't insert "eth1addr=00:04:f3:ff:ff:fb" into hash table oldval: 00:40:9D:7D:17:9C defval: 00:04:f3:ff:ff:fc ## Error: Can't overwrite "wlanaddr" himport_r: can't insert "wlanaddr=00:04:f3:ff:ff:fc" into hash table oldval: 00:40:9D:7D:17:9D defval: 00:04:f3:ff:ff:fd ## Error: Can't overwrite "btaddr" himport_r: can't insert "btaddr=00:04:f3:ff:ff:fd" into hash table