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The purpose of this article is to explain how to useArduino IDEAs a development environment, useESP32Make a simple“Hello World”program.

 

Introduction

The purpose of this article is to explain how to useESP32Make a simple“Hello World”program. This will be a very simple introduction, so this tutorial will include printing messages toArduino IDEOn the serial port assistant.

now atEspressifofgithubpageOn, there is aWindowsInstall onArduino-ESP32Very good tutorial。please checkHereMentioned tutorial. In addition, please note that there are other operating systems that can beHeresee.

Note that in the tutorial mentioned earlier, clonegitThe directory of the repository may be different from yours. In my case, for example,Arduinoinstalled atC:\ Programs（x86）\Arduinoin. and,hardwareThe directory already exists, so only\espressif\esp32Folder is made byGitAutomatically created.

The other important thing is that you may need to run as an administratorGit GUIwithget.exeFile in order to create the correct folder. In both cases, just right-click on the executable file and select“ Execute as administrator ”OK. It should work fine.

 

Code

The code for this tutorial is very simple, especially if you have usedArduinoorESP8266experience of.

So, inSetupIn the function, we first open a serial port connection, the baud rate is115200To do this, we simply callSerialObject ofbeginMethod and use the mentioned baud rate as input. Next, in the loop function, we only need to callprintlnMethod, print with a new line at the end“Hello World”news. After that, we usedelayFunction do2second(2000Milliseconds).

void setup()
{
 Serial.begin(115200);
}
void loop()
{
 Serial.println("HelloWorld");
 delay(2000);
}

Run code

Because we are still inESP32In the early stages of the product life cycle, most suppliers still call these boards“ESP32Development board”Or similar products. In my case, I use one of the universal boards sold on Taobao. So i choseArduino IDEmiddle“ESP32 Dev Module”As shown1Shown.

Figure1 - Currently availableArduino IDEofESP32board.

Nevertheless, the code compiling and uploading is also very good. D2As can be seen in the serial console, we got the correct“Hello World”Output. Don't forget to use the correct baud rate defined in the code, as shown in the figure.

Figure2 - “Hello World”The output of the program

related information

§  Espressif Arduino ESP32 CoreGithubpage

§  WindowsInstallation tutorial