Arduino Quick Start
2. Devices & Examples
3. M5Unified
4. M5GFX
5. Extensions
Unit
Base
Cap
IoT
Accessories
Arduino Nesso N1 Power
Arduino Nesso N1 power management-related API and example program.
Example Program
Compilation Requirements
- M5Stack board manager version >= 3.2.5
- Board option = ArduinoNessoN1
- M5GFX library version >= 0.2.17
- M5Unified library version >= 0.2.11 (develop branch)
Battery Status
Enable battery charging and display current battery voltage and capacity status.
cpp
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
#include "M5Unified.h"
void setup()
{
auto cfg = M5.config();
M5.begin(cfg);
M5.Display.setRotation(1);
M5.Display.setTextColor(GREEN);
M5.Display.setTextDatum(middle_center);
M5.Display.setTextFont(&fonts::FreeSerifBoldItalic18pt7b);
M5.Display.setTextSize(1);
M5.Power.setBatteryCharge(true);
M5.Power.setChargeCurrent(100);
M5.Power.setChargeVoltage(4200);
}
void loop()
{
M5.Display.clear();
int vol = M5.Power.getBatteryVoltage();
M5.Display.setCursor(10, 30);
M5.Display.printf("Bat: %dmv", vol);
int level = M5.Power.getBatteryLevel();
M5.Display.setCursor(10, 65);
M5.Display.printf("Level: %d%%", level);
M5.Display.setCursor(10, 100);
m5::Power_Class::is_charging_t status = M5.Power.isCharging();
M5.Display.printf("Charging: %s", status == m5::Power_Class::is_charging_t::is_charging ? "YES" : "NO");
delay(1000);
}
Grove Port Power Supply
Switch Grove port power supply.
cpp
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28
#include "M5Unified.h"
void setup() {
auto cfg = M5.config();
M5.begin(cfg);
M5.Display.setRotation(1);
M5.Display.setTextColor(GREEN);
M5.Display.setTextDatum(middle_center);
M5.Display.setTextFont(&fonts::FreeSerifBoldItalic18pt7b);
M5.Display.setTextSize(1);
M5.Power.setBatteryCharge(true);
M5.Power.setChargeCurrent(100);
M5.Power.setChargeVoltage(4200);
}
bool power_status = true;
void loop() {
M5.Display.clear();
M5.Display.setCursor(10, 30);
M5.Display.println("Grove Power:");
M5.Power.setExtOutput(power_status);
M5.Display.setCursor(10, 65);
M5.Display.printf("%s", power_status ? "ON" : "OFF");
power_status = !power_status;
delay(1000);
}