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Updated main examples README to add missing examples folders and Getting Started links Updated wifi/fastscan example README Updated wifi examples README Updated wifi main examples README Added instructions and removed obviousness from examples README Updates on example README in peripherals, system and wifi Updates on example README in peripherals and added wave form pictures on wave_gen example Updates and review on example README Revision on unit style convention Added the getting started link for each supported version Readme review and recommended enhancements Added the default note on the wave form option info Added the ESP32-C3 support information on the temperature sensor example README Added Getting Started information for ESP32-S2 and ESP32-C3 Issue fixed on the supported target on README Resolved merge conflict
66 lines
2.2 KiB
Markdown
66 lines
2.2 KiB
Markdown
# Task Watchdog Example
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This test code shows how to initialize the task watchdog, add tasks to the
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watchdog task list, feeding the tasks, deleting tasks from the watchdog task
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list, and deinitializing the task watchdog.
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## How to use example
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Before project configuration and build, be sure to set the correct chip target using `idf.py set-target <chip_name>`.
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### Hardware Required
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* A development board with ESP32/ESP32-S2/ESP32-C3 SoC (e.g., ESP32-DevKitC, ESP-WROVER-KIT, etc.)
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* A USB cable for Power supply and programming
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### Configure the project
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Program should run without error. Comment out `esp_task_wdt_reset()` to observe a watchdog timeout.
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### Build and Flash
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Build the project and flash it to the board, then run monitor tool to view serial output:
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Run `idf.py -p PORT flash monitor` to build, flash and monitor the project.
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(To exit the serial monitor, type ``Ctrl-]``.)
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See the Getting Started Guide for all the steps to configure and use the ESP-IDF to build projects.
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* [ESP-IDF Getting Started Guide on ESP32](https://docs.espressif.com/projects/esp-idf/en/latest/esp32/get-started/index.html)
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* [ESP-IDF Getting Started Guide on ESP32-S2](https://docs.espressif.com/projects/esp-idf/en/latest/esp32s2/get-started/index.html)
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* [ESP-IDF Getting Started Guide on ESP32-C3](https://docs.espressif.com/projects/esp-idf/en/latest/esp32c3/get-started/index.html)
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## Example Output
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As you run the example, you will see the following log:
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With `esp_task_wdt_reset()`:
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```
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I (0) cpu_start: Starting scheduler on APP CPU.
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Initialize TWDT
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Delay for 10 seconds
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Unsubscribing and deleting tasks
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Complete
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```
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Without `esp_task_wdt_reset()`:
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```
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I (0) cpu_start: Starting scheduler on APP CPU.
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Initialize TWDT
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Delay for 10 seconds
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E (6316) task_wdt: Task watchdog got triggered. The following tasks did not reset the watchdog in time:
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E (6316) task_wdt: - reset task (CPU 0)
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E (6316) task_wdt: - reset task (CPU 1)
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E (6316) task_wdt: Tasks currently running:
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E (6316) task_wdt: CPU 0: IDLE
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E (6316) task_wdt: CPU 1: IDLE
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E (6316) task_wdt: Print CPU 0 (current core) backtrace
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```
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## Troubleshooting
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For any technical queries, please open an [issue](https://github.com/espressif/esp-idf/issues) on GitHub. We will get back to you soon.
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