How to handle multi-device updates

Why it is important: if you have a device that contains multiple MCUs and each MCU has a separate Memfault project, you might want to download each release for them separately.

Step-by-Step guidance: 

The simplest way to achieve this is to modify the data in the following components:

• The application HTTP client config, g_mflt_http_client_config
• The device info struct return by memfault_platform_get_device_info

For each MCU target, follow these basic steps:

• Set the target MCU’s project key in g_mflt_http_client_config.api_key
• Modify the device info struct return by memfault_platform_get_device_info to match the target MCU
• Call memfault_http_get_latest_ota_payload_url or use your platform’s provided method to get the release URL
• Download the release using the URL and apply the release to the target M:

To help us respond as quickly as possible, please include answers to the following questions in your support request:

For each MCU please provide:

• RTOS and version
• Memfault SDK version