Using TI Zephyr repo

Go through the Getting Started Guide, it has steps for installing Zephyr SDK and Zephyr required libraries that will be needed. You should follow all the installtion steps except for Get Zephyr and install Python dependencies: step 5, we will use the steps below instead:

Instead of pulling the Zephyr repo, we need to clone the TI Zephyr repo, which contains the support for the MSPM0 devices:

west init -m  https://github.com/msp-ti/zephyr.git --mr mspm0_cleanup ~/zephyrproject

Under ~/zephyrproject/zephyr directory, open the west.yml file and update the hal_ti section. You need to add url property to point to the hal_ti project (https://github.com/msp-ti/hal_ti) and change the revision to point to the branch mspm0_support:

It should look like this:

    - name: hal_ti
      revision: mspm0_support
      url: https://github.com/msp-ti/hal_ti
      path: modules/hal/ti
      groups:
        - hal

west update

This will update the modules (e.g. clones hal_ti and other modules)

export ZEPHYR_BASE=~/zephyrproject/zephyr/

Building Dolos

Navigate to Dolos Zephyr firmware directory.
To get the zephyr.txt file, you need to set the environment variable CCS_BASE to point to CCS directory. A Kconfig variable CONFIG_MSPM0_IMAGE_OUTPUT_TI_TXT will use it to generate the TI_TXT file once you build the project:

export CCS_BASE=~/ti/ccs1250

Build the project using the provided build script under src/ (if you are using a virtual environment make sure to enable it first):

./build.sh

There's a known issue where the TI TXT file produced by the tool may not be 8-byte aligned, to fix the file:
- Open the ./build/zephyr/zephyr.txt file.
- For each hex line before a new @address or q statement, make sure that the line contains either 8 or 16 hex characters.
- If the hex characters are insufficient, add 00 until the file is 8 or 16 hex charaters long.
Flash the zephyr.txt