Arduino Quick Start
2. Devices & Examples
3. M5Unified
4. M5GFX
5. Extensions & Examples
Unit
Atom DTU
Screen Power Management
Power State Management
Note:
This is only a power state record function and does not involve actual power on or off operations.
powerSave
Function Prototype:
void powerSave(bool flg)Description:
- Set the power save state
Parameters:
- flg: power save flag
- true: enable power save
- false: disable power save
Return Value:
- null
powerSaveOff
Function Prototype:
void powerSaveOff(void)Description:
- Set the power save state to off
Parameters:
- null
Return Value:
- null
powerSaveOn
Function Prototype:
void powerSaveOn(void)Description:
- Set the power save state to on
Parameters:
- null
Return Value:
- null
Sleep and Wakeup
sleep
Function Prototype:
void sleep(void)Description:
- Put the panel to sleep, use wakeup to wake up the panel
Parameters:
- null
Return Value:
- null
wakeup
Function Prototype:
void wakeup(void)Description:
- Wake up the panel, use sleep to put the panel to sleep
Parameters:
- null
Return Value:
- null
Example Program:
cpp
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#include <Arduino.h>
#include <M5GFX.h>
M5GFX display;
void setup() {
display.begin();
display.setRotation(3);
if(display.isEPD())
{
display.setColorDepth(8);//The ink screen product supports a maximum bit depth of 8 bits.
display.setEpdMode(epd_fastest);
}
else
{
display.setColorDepth(16);
}
display.clear(TFT_WHITE);
display.setFont(&fonts::FreeMonoBoldOblique12pt7b);
display.setTextColor(TFT_BLACK);
display.setTextSize(1);
display.setCursor(0, 0);
display.println("\nFive seconds later, the rear panel enters sleep mode. After three seconds of sleep, it is awakened.");
delay(5000);
display.sleep();
display.powerSave(false);
delay(3000);
display.wakeup();
display.powerSaveOn();
display.println("\nPanel awakended!");
}
void loop() {
}