ESP-WROOM-32配置Arduino IDE开发环境

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文章目录

前言
一、下载Arduino IDE
二、安装工具集
三、测试样例
- 1.选则开发板
- 2.连接开发板
- 3.示例程序
四、使用官方示例程序
总结

前言

之前用了很多注入STM32、树莓派Pico和Arduino nano等板子，但是都不带Wifi和蓝牙功能。蓝牙我用的不多，倒是开发的程序中网络程序蛮多的，所以就购买了一个。经过一下午的琢磨终于把功能跑通了。

我买的板子有两个版本ESP32-WROOM-32D和ESP32-WROOM-32U，32U比32D多一个天线插槽。

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一、下载Arduino IDE

应该来说Arduino IDE是一个相当易用的IDE了，支持的MCU也多，个人觉得如果你习惯使用C开发那么Arduino IDE无疑更适合你。如果你是Python开发者，那么Thonny也是可以的。

Arduino IDE还有一个非常好的功能，那就是它为很多MCU都提供了示例程序，对新手非常友好，一会教你怎么使用。

官方下载链接

选择适合自己系统的版本：
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安装就不多说了，很简单。

二、安装工具集

打开Arduino IDE并在侧边栏找到开发板管理器，在搜索框输入esp32并选择跟我一样的选项并点击安装，会有点慢，耐心等待完成。
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三、测试样例

这里直接就以WIFI为例了，确保你和我的板子是同一块板子。

1.选则开发板

首先在工具里面找到开发板选项：
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展开并找到ESP32 Dev Module:

注意：千万型号别选错！

2.连接开发板

找一根USB数据线，一头是USB-A，另一头是Micro-USB的将开发板接到电脑上。这里默认你已经安装了串口驱动了。如果你成功了，你和我的配置应该是一样的。

开发板型号：

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串口连接状态：

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注意：你的串口不一定是COM8，实际的串口和你的系统有关系，总之能连接就对了，打感叹号就是硬件不识别，检查下是不是驱动没装好。

3.示例程序

创建一个新项目将下面的代码复制到新项目中：

注意：一定要2.4G，这个板子不支持5G的无线网！

/*
    Go to thingspeak.com and create an account if you don't have one already.
    After logging in, click on the "New Channel" button to create a new channel for your data. This is where your data will be stored and displayed.
    Fill in the Name, Description, and other fields for your channel as desired, then click the "Save Channel" button.
    Take note of the "Write API Key" located in the "API keys" tab, this is the key you will use to send data to your channel.
    Replace the channelID from tab "Channel Settings" and privateKey with "Read API Keys" from "API Keys" tab.
    Replace the host variable with the thingspeak server hostname "api.thingspeak.com"
    Upload the sketch to your ESP32 board and make sure that the board is connected to the internet. The ESP32 should now send data to your Thingspeak channel at the intervals specified by the loop function.
    Go to the channel view page on thingspeak and check the "Field1" for the new incoming data.
    You can use the data visualization and analysis tools provided by Thingspeak to display and process your data in various ways.
    Please note, that Thingspeak accepts only integer values.

    You can later check the values at https://thingspeak.com/channels/2005329
    Please note that this public channel can be accessed by anyone and it is possible that more people will write their values.
 */

#include <WiFi.h>

const char* ssid     = "这里改成你的无线网名称"; // Change this to your WiFi SSID
const char* password = "这里改成你的无线网密码"; // Change this to your WiFi password

const char* host = "api.thingspeak.com"; // This should not be changed
const int httpPort = 80; // This should not be changed
const String channelID   = "2005329"; // Change this to your channel ID
const String writeApiKey = "V6YOTILH9I7D51F9"; // Change this to your Write API key
const String readApiKey = "34W6LGLIFXD56MPM"; // Change this to your Read API key

// The default example accepts one data filed named "field1"
// For your own server you can ofcourse create more of them.
int field1 = 0;

int numberOfResults = 3; // Number of results to be read
int fieldNumber = 1; // Field number which will be read out

void setup()
{
    Serial.begin(115200);
    while(!Serial){delay(100);}

    // We start by connecting to a WiFi network

    Serial.println();
    Serial.println("******************************************************");
    Serial.print("Connecting to ");
    Serial.println(ssid);

    WiFi.begin(ssid, password);

    while (WiFi.status() != WL_CONNECTED) {
        delay(500);
        Serial.print(".");
    }

    Serial.println("");
    Serial.println("WiFi connected");
    Serial.println("IP address: ");
    Serial.println(WiFi.localIP());
}

void readResponse(WiFiClient *client){
  unsigned long timeout = millis();
  while(client->available() == 0){
    if(millis() - timeout > 5000){
      Serial.println(">>> Client Timeout !");
      client->stop();
      return;
    }
  }

  // Read all the lines of the reply from server and print them to Serial
  while(client->available()) {
    String line = client->readStringUntil('\r');
    Serial.print(line);
  }

  Serial.printf("\nClosing connection\n\n");
}

void loop(){
  WiFiClient client;
  String footer = String(" HTTP/1.1\r\n") + "Host: " + String(host) + "\r\n" + "Connection: close\r\n\r\n";

  // WRITE --------------------------------------------------------------------------------------------
  if (!client.connect(host, httpPort)) {
    return;
  }

  client.print("GET /update?api_key=" + writeApiKey + "&field1=" + field1 + footer);
  readResponse(&client);

  // READ --------------------------------------------------------------------------------------------

  String readRequest = "GET /channels/" + channelID + "/fields/" + fieldNumber + ".json?results=" + numberOfResults + " HTTP/1.1\r\n" +
                       "Host: " + host + "\r\n" +
                       "Connection: close\r\n\r\n";

  if (!client.connect(host, httpPort)) {
    return;
  }

  client.print(readRequest);
  readResponse(&client);

  // -------------------------------------------------------------------------------------------------

  ++field1;
  delay(10000);
}

编译并上传代码，设备会自动重启并执行代码。成功了就是下面的样子：

Status: 200 OK
Cache-Control: max-age=7, private
Access-Control-Allow-Origin: *
Access-Control-Max-Age: 1800
X-Request-Id: 9e90e7b7-8612-499e-a179-3e1bfcde272c
Access-Control-Allow-Headers: origin, content-type, X-Requested-With
Access-Control-Allow-Methods: GET, POST, PUT, OPTIONS, DELETE, PATCH
ETag: W/"1fdaff80268c18103424af2182ddf550"
X-Frame-Options: SAMEORIGIN

1e9
{"channel":{"id":2005329,"name":"WiFiCLient example","description":"Default setup for Arduino ESP32 WiFiClient example","latitude":"0.0","longitude":"0.0","field1":"data0","created_at":"2023-01-11T15:56:08Z","updated_at":"2023-01-13T08:13:58Z","last_entry_id":891510},"feeds":[{"created_at":"2024-05-09T13:32:01Z","entry_id":891508,"field1":"50"},{"created_at":"2024-05-09T13:32:22Z","entry_id":891509,"field1":"635"},{"created_at":"2024-05-09T13:32:41Z","entry_id":891510,"field1":"53"}]}
0


Closing connection