PowerHub Wakeup

APIs and example programs related to PowerHub Wakeup.

Example Program

Compile Requirements

• M5Stack board manager version >= 3.2.3
• Board selection = M5PowerHub
• M5Unified library version >= 0.2.11

#include <M5Unified.h>

int myIndex = 0;

void setup() {
  M5.begin();
  M5.Led.setBrightness(255);

  Serial.begin(115200);
  Serial.println("\n\nPowerHub Sleep & Wakeup Test");
  delay(1000);
}

void loop() {
  myIndex++;
  Serial.printf("%d ", myIndex);
  M5.Led.setAllColor(TFT_WHITE);
  M5.Led.display();
  delay(200);

  if (myIndex % 20 == 0) {
    M5.Led.setAllColor(TFT_BLACK);
    M5.Led.display();

    M5.Power.timerSleep(5);  // in seconds
    // M5.Power.deepSleep(5000000, false);  // in microseconds
    // M5.Power.lightSleep(5000000, false);  // in microseconds
  }

  if (myIndex >= 1000) {
    myIndex = 0;
  }
}

This program will turn on the LED and print a counter that starts from 0 and increments by 1 in the serial monitor. Each time the counter reaches a multiple of 20, the device will enter timed sleep mode for 5 seconds (LED turns off), then wake up, restart the program, and light up the LED again.

API

The PowerHub Wakeup driver uses the Power_Class from the M5Unified library. For more related APIs, refer to the following documentation:

• M5Unified - Power Class