2025-11-28 19:41:00 +08:00
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## Button Power Save Example
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This example demonstrates how to utilize the `button` component in conjunction with the light sleep low-power mode.
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* `button` [Component Introduction](https://docs.espressif.com/projects/esp-iot-solution/en/latest/input_device/button.html)
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## Hardware
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* Any GPIO on any development board can be used in this example.
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## Build and Flash
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Build the project and flash it to the board, then run the monitor tool to view the serial output:
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* Run `. ./export.sh` to set IDF environment
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* Run `idf.py set-target esp32xx` to set target chip
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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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## Example Output
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```
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I (1139) pm: Frequency switching config: CPU_MAX: 160, APB_MAX: 80, APB_MIN: 80, Light sleep: ENABLED
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I (1149) sleep: Code start at 42000020, total 119.03 KiB, data start at 3c000000, total 49152.00 KiB
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I (1159) button: IoT Button Version: 3.2.0
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I (1163) gpio: GPIO[0]| InputEn: 1| OutputEn: 0| OpenDrain: 0| Pullup: 1| Pulldown: 0| Intr:0
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I (2922) button_power_save: Button event BUTTON_PRESS_DOWN
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I (3017) button_power_save: Button event BUTTON_PRESS_UP
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I (3017) button_power_save: Wake up from light sleep, reason 4
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I (3200) button_power_save: Button event BUTTON_SINGLE_CLICK
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I (3200) button_power_save: Wake up from light sleep, reason 4
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I (3202) button_power_save: Button event BUTTON_PRESS_REPEAT_DONE
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I (3208) button_power_save: Wake up from light sleep, reason 4
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I (3627) button_power_save: Button event BUTTON_PRESS_DOWN
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I (3702) button_power_save: Button event BUTTON_PRESS_UP
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I (3702) button_power_save: Wake up from light sleep, reason 4
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I (3887) button_power_save: Button event BUTTON_SINGLE_CLICK
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I (3887) button_power_save: Wake up from light sleep, reason 4
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I (3889) button_power_save: Button event BUTTON_PRESS_REPEAT_DONE
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2025-11-28 09:58:45 +08:00
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```
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