The ConnectCore 6 is shipped without a default operating system loaded. Only U-Boot is flashed in the device. This step demonstrates how to install Yocto in your ConnectCore 6.

1. Establish a serial connection with your device

Before you start programming the firmware, you must open a serial connection with the device. You can use any serial terminal program such as Tera Term, Minicom, CoolTerm, or HyperTerminal.

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. Program the firmware

Once you have established the serial connection, you can start the firmware update process. Follow these steps to install Yocto in the device:

  1. Download the firmware images from this location: https://ftp1.digi.com/support/digiembeddedyocto/2.4/r3/images/ccimx6sbc-installer.zip

  2. Decompress ccimx6sbc-installer.zip.

  3. Place the decompressed files in the root of a FAT-formatted microSD card and insert it in the microSD socket of the ConnectCore 6 SBC (bottom side).

  4. 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:

    Unresolved directive in yocto-gs_t_program-fw_cc6cc6plus.adoc - include::../snippets/uboot-console-.adoc[]

  5. Install the firmware into the internal eMMC, executing the following command:

    => run install_linux_fw_sd
  6. 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