Memfault NCS Quickstart Firmware

This repository contains tooling for building sample firmware images for nRF-Connect SDK quickstart. See more here:

https://docs.memfault.com/docs/category/quickstart

Using the Payloads

Find the latest release here. Download the ZIP file for your board and extract it. You should find two folders inside, 0.0.1 and 0.0.2, each containing assets for that firmware version.

1. Flash the 0.0.1 image to your board using nrfutil or the nRF Connect Programmer app. Note: flashing the nrf54h20dk is different, you'll need to flash the 4 hex files separately.

   nrfutil device program --options chip_erase_mode=ERASE_ALL,reset=RESET_DEFAULT --firmware <path-to-extracted-folder>/0.0.1/merged.hex

2. Write the Memfault Project Key to the device: go to https://app.memfault.com/organizations/-/projects/-/settings and copy the project key. Then, use a serial terminal to connect to the board's virtual COM port (baud rate 115200), and use this command to set the project key:

   uart:~$ config set_project_key <project-key>
   Memfault project key saved to settings successfully

3. Create a 0.0.2 release in Memfault here, and add the 0.0.2 payload:

   • Name the release 0.0.2
   • When adding the payload ("Add OTA Payload to Release"):

     • Hardware Version: this is the board name, eg nrf54l15. Use mflt get_device_info in the serial terminal to confirm the value to use here:

       uart:~$ mflt get_device_info
       [00:44:37.079,012] <inf> mflt: S/N: 59699E41B038
       [00:44:37.079,045] <inf> mflt: SW type: app
       [00:44:37.079,068] <inf> mflt: SW version: 0.0.1
       [00:44:37.079,103] <inf> mflt: HW version: nrf54l15dk

     • Software Type: app

     • The payload file to upload is <path-to-extracted-folder>/0.0.2/dfu_application.zip

4. Deploy the release to the default cohort here.

5. Install the nRF Connect Device Manager iOS or Android app:

   • 🍎 iOS - Apple App Store

     

   • 🤖 Android - Google Play Store

     

6. Use the nRF Connect Device Manager app to scan for and connect to your device. Use the "Image" tab on the device page, select "Check for Update", and "Download" to download the FOTA package.

7. Once the download is complete, select "Start", "Confirm only" to install the update. The app will upload the new image to the device, and it will restart. You can see the new image version printed in the serial console when the device restarts:

   I: Image version: v0.0.2
   *** Booting My Application v0.0.2-fd967e4ec918 ***