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Arduino Quick Start

2. Devices & Examples

Fire Battery

M5Fire battery status related APIs and example program.

Example

cpp
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#include "M5Unified.h"
void setup()
{
auto cfg = M5.config();
M5.begin(cfg);
M5.Display.setTextDatum(middle_center);
M5.Display.setTextFont(&fonts::Orbitron_Light_24);
M5.Display.setTextSize(1);
}
void loop()
{
M5.Display.clear();
bool isCharging = M5.Power.isCharging();
int vol_per = M5.Power.getBatteryLevel();
M5.Display.setCursor(0, 30);
M5.Display.printf("Charging: %s \n\n", isCharging ? "Yes" : "No");
M5.Display.setCursor(0, 60);
M5.Display.printf("BAT: %d%%", vol_per);
delay(5000);
}

The program will display whether the battery is charging and its percentage on the screen, refreshing every 5 seconds. Due to hardware limitations, the Fire model cannot read battery voltage or current information.

API

The battery status part of Fire uses the Power_Class from the M5Unified library. For more information, please refer to the documentation below:

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