How to Interrupt ESP32 MicroPython Code?

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Interrupting the execution of MicroPython code running on an ESP32 can be done in several ways. Here are a few methods you can use:

  1. Hardware Reset: The simplest way to interrupt the code execution is to perform a hardware reset of the ESP32 board. This can be done by momentarily disconnecting and reconnecting the power supply to the board.
  2. REPL Access: If you have access to the MicroPython REPL (Read-Eval-Print Loop), you can interrupt the code execution by pressing Ctrl+C. This will raise a KeyboardInterrupt exception and pause the execution. From the REPL, you can then examine the state of the program, modify variables, or execute other commands.
  3. Use a Timer: If your code includes a time-based loop or delay, you can interrupt it by triggering an external interrupt or utilizing the built-in Timer module in MicroPython. By configuring the timer to interrupt the code execution, you can handle the interruption based on your requirements.
  4. GPIO Interrupt: If you have a specific event or condition that you want to use as a trigger for interrupting the code, you can utilize GPIO interrupts. ESP32 boards typically have multiple GPIO pins that can be configured to generate interrupts on specific events, such as a button press or a change in the input state. You can set up an interrupt handler to execute specific code when the interrupt event occurs, allowing you to interrupt the current code execution.

It’s important to note that MicroPython code on the ESP32 runs on a single thread, so interrupting the code will pause the execution of the current task until the interrupt is handled. The specific method you choose to interrupt the code depends on your requirements and the context in which your code is running.

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