Class Name: M5
Function:
Initialize LCD; initialize SD card; clear serial buffer, set serial baud rate to 115200; initialize I2C; set MBus mode; initialize Axp power management chip; initialize touch function; initialize RTC.
Syntax:
void begin(bool LCDEnable = true, bool SDEnable = true, bool SerialEnable = true, bool I2CEnable = false, mbus_mode_t mode = kMBusModeOutput);
Function Implementation:
void M5Core2::begin(bool LCDEnable, bool SDEnable, bool SerialEnable, bool I2CEnable, mbus_mode_t mode) {
// Correct init once
if (isInited == true) {
return;
} else {
isInited = true;
}
// UART
if (SerialEnable == true) {
Serial.begin(115200);
Serial.flush();
delay(50);
Serial.print("M5Core2 initializing...");
}
// I2C init
if (I2CEnable == true) {
Wire.begin(32, 33);
}
Axp.begin(mode);
// LCD INIT
if (LCDEnable == true) {
Lcd.begin();
}
// Touch init
Touch.begin(); // Touch begin after AXP begin. (Reset at the start of AXP)
// TF Card
if (SDEnable == true) {
SD.begin(TFCARD_CS_PIN, SPI, 40000000);
}
// TONE
if (SerialEnable == true) {
Serial.println("OK");
}
Rtc.begin();
}
Example:
#include <M5Core2.h>
void setup() {
M5.begin();
}
Function:
Read the state of the buttons.
Syntax:
void update();
Function Implementation:
void M5Core2::update() {
Touch.update();
Buttons.update();
yield();
}
Example:
#include <M5Core2.h>
void setup() {
M5.begin();
}
void loop() {
M5.update();
}
Turn off the power, wake up again using the PWR button.
void shutdown();
Turn off the power, wake up after the specified number of seconds using RTC.
int shutdown( int seconds );
Turn off the power, wake up at the specified time using RTC.
int shutdown( const RTC_TimeTypeDef &RTC_TimeStruct);
Turn off the power, wake up at the specified time and date using RTC.
int shutdown( const RTC_DateTypeDef &RTC_DateStruct, const RTC_TimeTypeDef &RTC_TimeStruct);
Example:
#include <M5Core2.h>
RTC_TimeTypeDef RTCtime;
RTC_TimeTypeDef RTCtime_Now;
char timeStrbuff[64];
void setup(){
M5.begin(true,true,true,true);
RTCtime.Hours = 10;
RTCtime.Minutes = 30;
RTCtime.Seconds = 45;
M5.Lcd.setCursor(0,80);
M5.Lcd.println("");
M5.Lcd.println("BtnA: shutdown, use power button to turn back on");
M5.Lcd.println("");
M5.Lcd.println("BtnB: shutdown, wake up after 5 seconds");
M5.Lcd.println("");
M5.Lcd.println("BtnC: shutdown, wake up at RTC Time 10:30:45");
}
void loop(){
M5.update();
if(M5.BtnA.wasPressed()){
M5.shutdown();
}else if(M5.BtnB.wasPressed()){
M5.shutdown(5);
}else if(M5.BtnC.wasPressed()){
M5.shutdown(RTCtime);
}
M5.Lcd.setCursor(0,140);
M5.Rtc.GetTime(&RTCtime_Now);
sprintf(timeStrbuff,"RTC Time Now is %02d:%02d:%02d",
RTCtime_Now.Hours,RTCtime_Now.Minutes,RTCtime_Now.Seconds);
M5.Lcd.println(timeStrbuff);
}