Core2

SKU:K010

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Tutorial

UIFlow

UIFlow

This tutorial will show you how to control M5Core2 devices through the UIFlow graphical programming platform

UIFlow2.0

UIFlow2.0

This tutorial will show you how to control the M5Core2 device through the UIFlow2.0 graphical programming platform

Arduino IDE

Arduino IDE

This tutorial will show you how to program and control M5Core2 devices through Arduino IDE

Micropython

Micropython

This tutorial will show you how to control M5Core2 devices through Micropython programming

Description

M5Core2 is the second generation core device in the M5Stack development kit series, which further enhances the functions of the original generation of cores.

The MCU is an ESP32 model D0WDQ6-V3 and has dual core Xtensa® 32-bit 240Mhz LX6 processors that can be controlled separately. Wi-Fi are supported as standard and it includes an on board 16MB Flash and 8MB PSRAM, USB TYPE-C interface for charging, downloading of programs and serial communication, a 2.0-inch integrated capacitive touch screen, and a built-in vibration motor.

M5Core2 also features a built-in RTC module which can provide accurate timing. The power supply is managed by an AXP192 power management chip, which can effectively control the power consumption of the base and a built-in green LED power indicator helps to notify the user of battery level. The battery capacity has been upgraded to 390mAh, which can power the core for much longer than the previous model.

The M5Core2 retains the TF-card(microSD) slot and speakers. However, in order to ensure higher quality sound output, the I2S digital audio interface power amplifier chip is used to effectively prevent signal distortion. There are independent power and reset buttons on the left side and bottom of the base.

The 3 icons on the front of the screen are capacitive buttons which are programmable. There is a small expansion board on the back of the base with a 6-axis IMU sensor and microphone. The development platform and programming language supported by M5Stack Core2: Arduino, UIFlow (using Blockly, MicroPython language) No matter what level of your development and programming skills, M5Stack will help You gradually turn your ideas into reality.

Power Management

USB drive

Extensions

Features

• ESP32-based, built-in Wi-Fi
• 16M Flash,8M PSRAM
• Built-in speaker, power indicator, vibration motor, RTC, I2S amplifier, capacitive touch screen, power button, reset button
• TF card slot (16G Maximum size)
• Built-in lithium battery, equipped with power management chip
• Independent small board built-in 6-axis IMU, PDM microphone
• M-Bus Socket & Pins
• Compatible with multi-platform development:
  • UIFlow
  • MicroPython
  • Arduino
  • .NET nanoFramework
  • Operating System (RTOS):zephyr

Include

• 1x M5Stack Core2
• 1x Type-C USB(20cm)
• 1x HEX KEY

Applications

• Internet of things terminal controller
• Stem education product
• DIY creation
• Smart home equipment

Specifications

Driver Installation

EasyLoader

Download Windows Version Easyloader Download MacOS Version Easyloader

PinMap

LCD & TF card

LCD :320x240 TF card Maximum size 16GB

CAP.TOUCH (I2C Addr: 0x38)

Mic & NS4168(Speaker)

AXP Power Indicator Light

RTC

IMU(3-axis gyroscope & 3-axis accelerometer)

USB to serial chip

Internal I2C connection

M5Core2 M-BUS Schematic diagram

M5Core2 BUS(compared to M5Stack)

M5PORT DEFINE

ESP32 ADC/DAC

For more information about Pin assignment and Pin Remapping, Please refer to ESP32 Datasheet

Charging current measured value

Schematic

• Core2-Schematic

• Core2 Expansion board-Schematic

Product Size

Related Link

• Datasheet

  • ESP32
  • FT6336U
  • NS4168
  • MPU6886
  • ILI9342C
  • SPM1423
  • BM8563
  • SY7088
  • AXP192 datasheet
  • AXP192 register
  • 1027DC Motor

• API

  • Arduino API

Example

Arduino

• M5Core2 Arduino Library

Tutorial

• UIFlow
• Arduino
• ESP32 formats and communication protocols

Version Change

FAQ

Q: If the memory card fails to read, you can add the following code in the initialization to increase the host memory card reading ability.

for (auto gpio : (const uint8_t[]){18, 19, 23}) {
   *(volatile uint32_t*)(GPIO_PIN_MUX_REG[gpio]) |= FUN_DRV_M;
   gpio_pulldown_dis((gpio_num_t)gpio);
   gpio_pullup_en((gpio_num_t)gpio);
 }

Q: How to detect the power level of core2?

• Upload the following code, refer to core2 API description

#include <M5Core2.h>

void setup() {
  M5.begin();
}
void loop() {
  Serial.printf("Bat Voltage:%f\n", M5.Axp.GetBatVoltage());
  delay(500);
}

Q: How do I display pictures on CORE2? (Using C language)

• 1. Create a 320*240 pixel jpg image named logo.jpg.
• 2. Download the source files , unzip them, open the folder, execute .\conver.ps1 in the terminal, and replace the result in the array of the source file below.
• 3. Open the drawImageData_core2_Pure.ino program, and replace the binary result obtained above into the array below.
• 4. Upload the program. The result is as shown in the image below: