Arduino文檔閱讀筆記-WeMos D1 ESP8266 WIFI開發板入門

WeMos D1開發板以ESP8266WIFI開發板爲基礎，使用Arduino開發板的設計，工作電壓爲3.3V設計出來的開發板，這個開發板僅僅是使用了Arduino uno的佈局設計，並不是Arduino的開發板。

下面是關於這塊開發板的說明書：

總結下：

此開發板芯片爲ESP8266（32位），緩存比Arduino Uno大，並且包含11個數字IO引腳以及1個模擬輸入引腳，使用Micro-B type USB線進行連接。

下面是引腳方面的說明！

所有的引腳都需要跑到3.3V上，並且除了D0口其他口都支持interrupt/PWM/I2C/one-wire。

下面是在Arduino IDE中部署其開發環境

軟件需要如下3個：

CH340G USB to UART driver: https://www.wemos.cc/downloads

Python 2.7: https://www.python.org/downloads/release/python-2713/

Arduino 1.8.2: https://www.arduino.cc/en/Main/Software

 

在Arduino的目錄下新建2個文件夾esp8266com及esp8266

在Github上下載其庫文件：

將壓縮包放到esp8266目錄下，然後解壓：

將裏面的文件移到到esp8266中，再將Arduino-master與Arduino-master.zip刪掉。

最後變成這個樣子即可！

打開CMD然後執行如下命名：

python get.py

此命令將會下載開發板所需要的工具，一切正常，且安裝好將會是這樣的。

這樣就完成了安裝！！！

 

使用Arduino IDE時要選中正確的開發板，Toos>Board中選擇"WeMos D1 R2 & Mini"即可：

下面是幾個示例代碼：

Blink

/*
 ESP8266 Blink by Simon Peter
 Blink the blue LED on the ESP-01 module
 This example code is in the public domain
 
 The blue LED on the ESP-01 module is connected to GPIO1 
 (which is also the TXD pin; so we cannot use Serial.print() at the same time)
 
 Note that this sketch uses LED_BUILTIN to find the pin with the internal LED
*/

void setup() {
  pinMode(LED_BUILTIN, OUTPUT);     // Initialize the LED_BUILTIN pin as an output
}

// the loop function runs over and over again forever
void loop() {
  digitalWrite(LED_BUILTIN, LOW);   // Turn the LED on (Note that LOW is the voltage level
                                    // but actually the LED is on; this is because 
                                    // it is active low on the ESP-01)
  delay(1000);                      // Wait for a second
  digitalWrite(LED_BUILTIN, HIGH);  // Turn the LED off by making the voltage HIGH
  delay(2000);                      // Wait for two seconds (to demonstrate the active low LED)
}

查看下芯片的ID，這裏串口打印頻率要選擇115200

/*  Get Chip ID
 *  wemos.cc
 *  
 *  
 */

void setup() {
  Serial.begin(115200);
}

void loop() {
  Serial.println("");
  Serial.println("");
  Serial.println("Check ID in:");
  Serial.println("https://www.wemos.cc/verify_products");
  Serial.printf("Chip ID = %08Xn", ESP.getChipId());
  Serial.println("");
  Serial.println("");
  delay(5000);
}

運行一個簡單的Web Server

#include <ESP8266WiFi.h>
#include <WiFiClient.h>
#include <ESP8266WebServer.h>
#include <ESP8266mDNS.h>

const char* ssid = "........";
const char* password = "........";

ESP8266WebServer server(80);

const int led = 13;

void handleRoot() {
  digitalWrite(led, 1);
  server.send(200, "text/plain", "Hello from esp8266!");
  digitalWrite(led, 0);
}

void handleNotFound(){
  digitalWrite(led, 1);
  String message = "File Not Foundnn";
  message += "URI: ";
  message += server.uri();
  message += "nMethod: ";
  message += (server.method() == HTTP_GET)?"GET":"POST";
  message += "nArguments: ";
  message += server.args();
  message += "n";
  for (uint8_t i=0; i<server.args(); i++){
    message += " " + server.argName(i) + ": " + server.arg(i) + "n";
  }
  server.send(404, "text/plain", message);
  digitalWrite(led, 0);
}

void setup(void){
  pinMode(led, OUTPUT);
  digitalWrite(led, 0);
  Serial.begin(115200);
  WiFi.begin(ssid, password);
  Serial.println("");

  // Wait for connection
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }
  Serial.println("");
  Serial.print("Connected to ");
  Serial.println(ssid);
  Serial.print("IP address: ");
  Serial.println(WiFi.localIP());

  if (MDNS.begin("esp8266")) {
    Serial.println("MDNS responder started");
  }

  server.on("/", handleRoot);

  server.on("/inline", [](){
    server.send(200, "text/plain", "this works as well");
  });

  server.onNotFound(handleNotFound);

  server.begin();
  Serial.println("HTTP server started");
}

void loop(void){
  server.handleClient();
}

ssid填寫wifi名，password填寫wifi密碼