Tab5 Power Manager

Tab5 Power Manager related APIs and example.

Example

Compilation Requirements

• M5Stack board manager version >= 3.2.2
• Board selection = M5Tab5
• M5Unified library version >= 0.2.8
• M5GFX library version >= 0.2.11

#include "M5Unified.h"

void setup()
{
    auto cfg = M5.config();
    M5.begin(cfg);
    M5.Display.setRotation(3);
    M5.Display.setTextDatum(top_center);
    M5.Display.setFont(&fonts::FreeMonoBold24pt7b);
    M5.Display.clear(WHITE);
    M5.Display.drawString("Tab5 Power Manager", M5.Lcd.width() / 2, 0);
}

void loop()
{
    M5.Display.clear();
    bool bat_ischarging = M5.Power.isCharging();
    M5.Display.setCursor(0, 100);
    M5.Display.printf("Bat Charging: %s\n", bat_ischarging ? "Yes" : "No");
    int bat_vol = M5.Power.getBatteryVoltage();
    M5.Display.printf("Bat Voltage: %dmv\n", bat_vol);
    int bat_level = M5.Power.getBatteryLevel();
    M5.Display.printf("Bat Level: %d\n", bat_level);
    delay(1000);
}

Power Output Control

• The 5V outputs of M5-Bus, HY2.0-4P, 2.54-10P Bus, and USB-A are enabled by default in M5.begin(). Users can configure them as needed using the following API:

M5.Power.setExtOutput(true);
// M5.Power.setExtOutput(false);

• If you need to control the USB-A power or expansion port power individually, you can use the following API:
  • ext_PA：Controls M5-Bus / HY2.0-4P / 2.54-10P Bus (shared switch, independent control not supported)
  • ext_USB：Controls USB-A only

M5.Power.setExtOutput(false, m5::ext_port_mask_t::ext_PA);
M5.Power.setExtOutput(false, m5::ext_port_mask_t::ext_USB);

API

The Tab5 power management driver uses the Power_Class from the M5Unified library. For more related APIs, please refer to the following documentation:

• M5Unified - Power Class