To use as a M5Stack component of ESP-IDF

• Download and install esp-idf
• Create template idf project

  git clone --recursive https://github.com/m5stack/M5Stack-IDF.git

• make menuconfig has some Arduino options
  • "Autostart Arduino setup and loop on boot"

    • If you enable this options, your main.cpp should be formated like any other sketch

      //file: main.cpp
      #include <M5Stack.h>
      
      void setup(){
      
        M5.begin();
        M5.Lcd.printf("hello world");
      }
      
      void loop() {
      
        M5.update();
      }
      

    • Else you need to implement app_main() and call initArduino(); in it.

      Keep in mind that setup() and loop() will not be called in this case. If you plan to base your code on examples provided in esp-idf, please make sure move the app_main() function in main.cpp from the files in the example.

      //file: main.cpp
      #include <M5Stack.h>
      
      extern "C" void app_main()
      {
          initArduino();
          M5.begin();
          M5.Lcd.println("hello world!");
      }
      

  • "Disable mutex locks for HAL"
    • If enabled, there will be no protection on the drivers from concurently accessing them from another thread/interrupt/core
  • "Autoconnect WiFi on boot"
    • If enabled, WiFi will start with the last known configuration
    • Else it will wait for WiFi.begin
• make flash monitor will build, upload and open serial monitor to your board