esp32 Demo Application

This Demo App is based on the console example from ESP-IDF, which can be found here relative to the ESP-IDF SDK root folder:

• examples/system/console/advanced/

Configuring for MQTT

This application includes an option to send Memfault data over MQTT. This option requires a few extra pieces to set up. You can either follow the steps outlined here or use your own MQTT setup.

Broker Setup

1. Install a local installation of Cedalo by following the installation guide
2. Login to Cedalo at http://localhost:8088
3. Create a new client login for the device
   • Ensure device client has the "client" role to allow publishing data
4. Create a new client login for the Python service
   • Ensure Python service client has "client" role to allow subscribing to data

Service Setup

1. Modify the script found in Docs->Best Practices->MQTT with Memfault with the the following:
   1. The service client login information previously created
   2. Connection info for your local broker
   3. Map of Memfault projects to project keys
2. Start the service by running python mqtt.py

Device Setup

1. Make the following modifications to main/app_memfault_transport_mqtt.c:
   1. Update MEMFAULT_PROJECT macro with your project's name
   2. Update s_mqtt_config with your setup's IP address, and MQTT client username and password
2. Clean your existing build with idf.py fullclean && rm sdkconfig
3. Set your target: idf.py set-target <esp32_platform_name>
4. Build your image: idf.py -D SDKCONFIG_DEFAULTS="sdkconfig.defaults;sdkconfig.mqtt" build
5. Flash to your device using idf.py flash