How to Read Multiple Text Files in Arduino IDE

Discover how to efficiently read multiple text files containing numeric values in the Arduino IDE and store them in an array. Follow our step-by-step guide to master file handling with SPIFFS!
---

Visit these links for original content and any more details, such as alternate solutions, latest updates/developments on topic, comments, revision history etc. For example, the original title of the Question was: Read multiple text file in Arduino ide

If anything seems off to you, please feel free to write me at vlogize [AT] gmail [DOT] com.
---
How to Read Multiple Text Files in Arduino IDE: A Step-by-Step Guide

In the ever-evolving world of embedded programming, managing files and data effectively is crucial. If you've found yourself needing to read multiple text files containing numeric values in Arduino IDE, you're in the right place. This guide will help you understand how to read these files sequentially, store their contents in an array, and clear the array between reads.

The Problem

Read the contents of each file one by one.

Store the numeric values from each file in an array.

Clear the array before reading the next file.

Why This Matters

Reading files in sequence allows for organized data management, which is essential for various applications like data logging, sensor readings, or configuration setups. Understanding how to handle file operations on microcontrollers using the Arduino IDE can significantly enhance your programming skills.

The Solution

To tackle the problem effectively, you'd typically use the SPIFFS (Serial Peripheral Interface Flash File System) library in Arduino. Below is a structured approach to achieve your goal.

Step 1: Set Up SPIFFS

Make sure you have the SPIFFS library included in your Arduino sketch. This library allows you to read and write files from the flash memory on your device. Here's how to initialize it:

[[See Video to Reveal this Text or Code Snippet]]

Step 2: Declare Your Array

You'll need an array to hold the floating-point values read from the text files. For this example, we'll use a size of 1000, but you can adjust it based on your needs.

[[See Video to Reveal this Text or Code Snippet]]

Step 3: Read Each File

You’ll loop through each file in the SPIFFS and read the contents into the array. You can do this with a method that reads the file and processes the data:

Use a method to read the file and store values in the array.

Close the file after reading.

Clear the array before reading the next file.

Here's an example implementation:

[[See Video to Reveal this Text or Code Snippet]]

Step 4: Reading File Content

The function readFile will read the contents of a single file into the array and return the number of values read:

[[See Video to Reveal this Text or Code Snippet]]

Step 5: Handle the Array

Create a method handleArray to process the stored data, which could involve printing the values:

[[See Video to Reveal this Text or Code Snippet]]

Conclusion

Now you have a clear and structured way to read multiple text files containing numeric values in Arduino IDE using SPIFFS. This method allows you to efficiently manage your data, making your projects more organized and robust.

Feel free to customize the code snippets and adapt the solution according to your specific needs. Happy coding!