Note

Include the M5.update() function in the main loop to read state updates and minimize blocking as much as possible. Otherwise, button state changes may not be captured in time.

Example

Compilation Requirements

M5Stack Board Manager Version >= 3.3.7
Board Option = M5StopWatch
M5Unified Library Version >= 0.2.15
M5GFX Library Version >= 0.2.21

cpp 
#include "M5Unified.h"

void setup()
{
    auto cfg = M5.config();
    M5.begin(cfg);
    Serial.begin(115200);
}

void loop()
{
    M5.update();
    if (M5.BtnA.wasPressed()) {
        Serial.println("BtnA Pressed");
    }
    if (M5.BtnB.wasPressed()) {
        Serial.println("BtnB Pressed");
    }
}

To see the effect, upload the example, press the buttons, and view the output in the serial monitor.

API

The StopWatch button section uses the Button_Class from the M5Unified library. For more button-related APIs, refer to the following document:

M5Unified - Button Class

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