Paper Battery 电池状态

#include <M5Unified.h>
#include <M5GFX.h>

void setup() {
  M5.begin();
  M5.Display.setRotation(0);
  M5.Display.setFont(&fonts::FreeMonoBold18pt7b);
  M5.Display.setEpdMode(epd_text);  // epd_quality, epd_text, epd_fast, epd_fastest
  M5.Display.clear();

  M5.Display.setCursor(0, 200);
  M5.Display.println("     Paper Realtime");
  M5.Display.println("     Battery Status\n\n");
  M5.Display.println(" Battery   Level:\n");
  M5.Display.println(" Battery Voltage:\n");
}

void loop() {
  M5.update();

  int32_t batteryLevel = M5.Power.getBatteryLevel();      // 0 - 100 %
  int16_t batteryVoltage = M5.Power.getBatteryVoltage();  // unit: mV

  M5.Display.setCursor(360, 340);
  M5.Display.printf(" %3d %%", batteryLevel);
  M5.Display.setCursor(360, 410);
  M5.Display.printf("%4d mV", batteryVoltage);

  delay(2000);
}