Arduino Quick Start
2. Devices & Examples
3. M5Unified
5. Extensions & Examples
Atom DTU
Hat
StamPLC Button
StamPLC button input related APIs and example program.
Note:
When using, you must include the
M5StamPLC.update() function in the main loop to read state updates and minimize blocking; otherwise, the button state changes may not be captured in time.Example Program
cpp
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35
/* *SPDX-FileCopyrightText: 2025 M5Stack Technology CO LTD * *SPDX-License-Identifier: MIT */#include <Arduino.h>#include <M5StamPLC.h> void setup(){ /* Init M5StamPLC */ M5StamPLC.begin(); M5StamPLC.Display.setTextScroll(true); M5StamPLC.Display.setTextColor(TFT_GREENYELLOW); M5StamPLC.Display.println("Button example"); M5StamPLC.Display.setTextColor(TFT_YELLOW);} void loop(){ /* Update button states */ M5StamPLC.update(); /* Check if button was clicked */ if (M5StamPLC.BtnA.wasClicked()) { M5StamPLC.Display.println("Button A was clicked"); } else if (M5StamPLC.BtnB.wasClicked()) { M5StamPLC.Display.println("Button B was clicked"); } else if (M5StamPLC.BtnC.wasClicked()) { M5StamPLC.Display.println("Button C was clicked"); } delay(100);}API
The M5StamPLC library is implemented based on the M5Unified library, with the button functionality utilizing the Button_Class from M5Unified. For more button-related APIs, please refer to the documentation below: