Arduino Quick Start
Air Quality button input related APIs and example program.
#include <M5Unified.h>
void setup() {
auto cfg = M5.config();
cfg.serial_baudrate = 115200;
M5.begin(cfg);
M5.Lcd.clear();
M5.Lcd.setTextSize(2);
M5.Lcd.setCursor(0, 0);
M5.Lcd.println("M5AirQ Button Test");
}
void loop() {
M5.update();
// Detect BtnA (GPIO0) click
if (M5.BtnA.wasClicked()) {
Serial.println("AirQ BtnA clicked");
M5.Lcd.println("BtnA clicked");
}
// Detect BtnB (GPIO8) click
if (M5.BtnB.wasClicked()) {
Serial.println("AirQ BtnB clicked");
M5.Lcd.println("BtnB clicked");
}
delay(10);
}
After uploading, press the buttons to see the following effect:
The button functionality uses the Button_Class
from the M5Unified library. For more button-related APIs, please refer to the documentation below: