Embedded Systems High Frequency Datalogging

In a recent project, the team implemented an embedded device that aggregates sensor data and stores it until it can be uploaded to a central server. Due to power and cost constraints, this system is using an embedded microcontroller. Compared to more capable Linux systems, microcontroller based embedded systems applications often have resource constraints to work within. These resource constraints can be challenging, but with proper preparation and testing, data can be safely
and logically stored for later retrieval by another process, even after power loss or system power-off.

This document will discuss how we used the SPIFFS filesystem to enable storage of sensor data using a SPI Flash storage, with discussion of some challenges that were found during the process.