Скачать или смотреть Solving the ESP32 Freeze Issue with MicroPython

Discover how to fix the frustrating freeze issue on your `ESP32` when using `MicroPython`. Follow these simple steps to get your LED blinking correctly!
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This video is based on the question https://stackoverflow.com/q/64446651/ asked by the user 'DolphinAir' ( https://stackoverflow.com/u/13286600/ ) and on the answer https://stackoverflow.com/a/64447448/ provided by the user 'Mohammed Ahmed' ( https://stackoverflow.com/u/14353846/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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Solving the ESP32 Freeze Issue with MicroPython

If you're venturing into the world of MicroPython with your ESP32, you may encounter unexpected issues, like the board freezing or hanging during execution. One common problem faced by users involves scripts that don't behave as intended, particularly when trying to control an LED. Below, we'll dive into why this happens and how to resolve it effectively.

The Problem at Hand

As an example, let's consider a situation where you attempted to run a simple LED blinking script using MicroPython on the ESP32. Your code looks something like this:

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

Upon running this script, the LED blinks as expected, but you notice that it blinks a total of 11 times instead of 10, and afterwards, the LED remains lit indefinitely. Additionally, the expected print statement "Done!" is never reached, suggesting a problem within your loop or pin configuration.

Troubleshooting Steps

Understanding Pin Configuration: The ESP32 has multiple GPIO pins, each with specific purposes. In your code, you're using Pin(1) which happens to serve as a TX (transmit) pin for UART communication. Using TX pins for general output can lead to unexpected behavior or freezing, especially when the associated hardware is in use.

Suggested Fix - Change the Pin: A straightforward solution to resolve the freezing issue is to change the pin number. Instead of using pin 1, try using pin 4 or 5, both of which are more suitable for general purpose output without conflicting with foundational functionalities of the ESP32.

A Revised Approach

Here's a modified version of your script using pin 4 instead of pin 1:

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

Running the Code Again

Try running this revised code. You should observe the LED blinking 10 times as expected, and the program will print "Done!" upon completion without freezing. If you wish to experiment further with the REPL (Read-Eval-Print Loop), remember to use the alternative pin as discussed.

Conclusion

Running into freezing issues with your ESP32 when using MicroPython can be frustrating. However, understanding pin functionalities and making simple adjustments can help you navigate these challenges. By switching from pin 1 to pins like 4 or 5, you can achieve your program's intended functionality without hitches.

Feel free to reach out if you encounter any more issues or have further questions. Happy coding with your ESP32!