An Arduino library that turns the serial monitor into a CLI, with an Arduino IoT Cloud integration. If this library was of any use for you, please consider starring it!

Features:

• Register commands with descriptions, argument limits, and custom argument types (INT, FLOAT, STRING).
• A built-in help command automatically lists all available commands, their argument types, and descriptions. No need to make it yourself!
• Supports per-argument type validation (ensuring the first argument is an INT, the second a FLOAT, etc).
• Easy to use
• Clean and user-friendly error handling

Arduino Cloud integration:

• Use the Arduino Cloud chat widget as the command-line interface.
• Remotely control and debug your device from the cloud without needing serial communication.
• Input commands anywhere, from a computer or a smartphone.

For help, see:

• Examples
• Serial Monitor documentation
• Arduino Cloud integration documentation

Write functions in your code, then register them as commands. Basic example usage (for the serial monitor):

#include <CommandHandler.h>

CommandHandler handler(5, 5, 64);  // max 5 commands, 5 args, 64-char messages

// Define an echo command
String echoCommand(const String* args, size_t argCount) {
    String result;
    for (size_t i = 0; i < argCount; i++) {
        result += args[i] + " ";
    }
    return result;
}

void setup() {
    Serial.begin(9600);

    // Register the "echo" command
    handler.registerCommand("echo", echoCommand, "Echoes back the arguments.", 1, 5, nullptr, 0);
}

void loop() {
    handler.loop();  // Check for new command inputs on each loop
}