Arduino Quick Start
2. Devices & Examples
3. M5Unified
4. M5GFX
5. Extensions
Unit
Base
Cap
IoT
6. Applications
AWS IoT Core
Atom EchoS3R Button
APIs and example programs related to button input on Atom EchoS3R.
Notes
When using this feature, you need to include the
M5.update() function in the main loop to read state updates. Also, try to minimize blocking operations, otherwise button changes may not be detected in time.Example Program
Compilation Requirements
- M5Stack board manager version >= 3.2.2
- Board option = M5AtomS3R
- M5Unified library version >= 0.2.8
cpp
1 2 3 4 5 6 7 8 9 10 11 12 13 14
#include "M5Unified.h"
void setup() {
M5.begin();
Serial.begin(115200);
}
void loop() {
M5.update();
if (M5.BtnA.wasPressed()) {
Serial.println("BtnA was pressed");
}
}This program will detect whether the button on the front of the device is pressed and print a message in the serial monitor:
API
The button part of Atom EchoS3R uses the Button_Class from the M5Unified library. For more related APIs, please refer to the following documentation: