The prebuilt ConnectCore image includes support for the ConnectCore Cloud Services demo.
1. Establish a serial connection with your device
Before you can establish the serial connection, you may need to run a setup script if your ConnectCore 8M Mini Development Kit is revision 4 or higher and you are running Linux. See Run serial console setup script for more information. |
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
Download the firmware images from the following location: https://ftp1.digi.com/support/digiembeddedyocto/4.0/r7/images/ccimx8mm-dvk/ccimx8mm-dvk-installer.zip
3. Program the firmware
Digi recommends you use the Universal Update Utility (UUU) through a USB connection to your development PC to program the images.
-
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 v1.5.11 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 recovery 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 SPL dub-2020.04-r6.1 (Sep 19 2023 - 07:19:27 +0000) DDRINFO: start DRAM init DDRINFO: DRAM rate 3000MTS DDRINFO:ddrphy calibration done DDRINFO: ddrmix config done Normal Boot Trying to boot from MMC2 NOTICE: BL31: v2.4(release):lf-5.10.72-2.2.3-2-gb67eb4618 NOTICE: BL31: Built : 07:19:48, Sep 19 2023 U-Boot dub-2020.04-r6.1 (Sep 19 2023 - 07:19:27 +0000) CPU: i.MX8MMQ rev1.0 1600 MHz (running at 1200 MHz) CPU: Industrial temperature grade (-40C to 105C) at 32C Reset cause: POR DRAM: 2 GiB MCA: HW_VER=1 FW_VER=1.00 MMC: FSL_SDHC: 1, FSL_SDHC: 0 In: serial Out: serial Err: serial Model: Digi ConnectCore 8M Mini Development Kit ConnectCore 8M Mini SOM variant 0x03: 2 GiB LPDDR4, Wi-Fi, Bluetooth, MCA, Crypto-auth Board version 3, ID undefined Boot: MMC2 BuildInfo: - ATF b67eb46 - U-Boot dub-2020.04-r6.1 flash target is MMC:0 Net: eth0: ethernet@30be0000 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>
-
Program the image files:
$ ./install_linux_fw_uuu.sh
-
Once the firmware is installed, the device boots automatically. The default username is root with no password.
Remove the micro USB cable from the recovery connector of the ConnectCore 8M Mini Development Kit. The USB port will not connect if a cable is connected to the recovery of the ConnectCore 8M Mini Development Kit. See USB interfaces on the ConnectCore 8M Mini.
While the recommended boot method is eMMC, you can also boot the image from a microSD card using the You must use a microSD with a minimum capacity of 8 GB. |