WeMos D1开发板
全称是WeMos D1 WiFI UNO R3开发板，基于ESP-12E，兼容Arduino。
有了这款物联网开发板，我们就可以愉快的使用arduino方式开发ESP8266，玩转物联网项目。
1.Arduino IDE下载
链接：https://pan.baidu.com/s/1ig6psM6GvWJk0CwqaIqs7A
提取码：uyy4
2.示例(搜索WIFI)
1 /*
2 * This sketch demonstrates how to scan WiFi networks.
3 * The API is almost the same as with the WiFi Shield library,
4 * the most obvious difference being the different file you need to include:
5 */
6 #include "ESP8266WiFi.h"
7
8 void setup() {
9 Serial.begin(115200);
10
11 // Set WiFi to station mode and disconnect from an AP if it was previously connected
12 WiFi.mode(WIFI_STA);
13 WiFi.disconnect();
14 delay(100);
15
16 Serial.println("Setup done");
17 }
18
19 void loop() {
20 Serial.println("scan start");
21
22 // WiFi.scanNetworks will return the number of networks found
23 int n = WiFi.scanNetworks();
24 Serial.println("scan done");
25 if (n == 0)
26 Serial.println("no networks found");
27 else
28 {
29 Serial.print(n);
30 Serial.println(" networks found");
31 for (int i = 0; i < n; ++i)
32 {
33 // Print SSID and RSSI for each network found
34 Serial.print(i + 1);
35 Serial.print(": ");
36 Serial.print(WiFi.SSID(i));
37 Serial.print(" (");
38 Serial.print(WiFi.RSSI(i));
39 Serial.print(")");
40 Serial.println((WiFi.encryptionType(i) == ENC_TYPE_NONE)?" ":"*");
41 delay(10);
42 }
43 }
44 Serial.println("");
45
46 // Wait a bit before scanning again
47 delay(5000);
48 }
3.WIFI搜索
4.点灯控制
/*
* This sketch demonstrates how to set up a simple HTTP-like server.
* The server will set a GPIO pin depending on the request
* http://server_ip/gpio/0 will set the GPIO2 low,
* http://server_ip/gpio/1 will set the GPIO2 high
* server_ip is the IP address of the ESP8266 module, will be
* printed to Serial when the module is connected.
*/
#include <ESP8266WiFi.h>
const char* ssid = "your-ssid";
const char* password = "your-password";
// Create an instance of the server
// specify the port to listen on as an argument
WiFiServer server(80);
void setup() {
Serial.begin(115200);
delay(10);
// prepare GPIO2
pinMode(2, OUTPUT);
digitalWrite(2, 0);
// Connect to 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");
// Start the server
server.begin();
Serial.println("Server started");
// Print the IP address
Serial.println(WiFi.localIP());
}
void loop() {
// Check if a client has connected
WiFiClient client = server.available();
if (!client) {
return;
}
// Wait until the client sends some data
Serial.println("new client");
while(!client.available()){
delay(1);
}
// Read the first line of the request
String req = client.readStringUntil('\r');
Serial.println(req);
client.flush();
// Match the request
int val;
if (req.indexOf("/gpio/0") != -1)
val = 0;
else if (req.indexOf("/gpio/1") != -1)
val = 1;
else {
Serial.println("invalid request");
client.stop();
return;
}
// Set GPIO2 according to the request
digitalWrite(2, val);
client.flush();
// Prepare the response
String s = "HTTP/1.1 200 OK\r\nContent-Type: text/html\r\n\r\n<!DOCTYPE HTML>\r\n<html>\r\nGPIO is now ";
s += (val)?"high":"low";
s += "</html>\n";
// Send the response to the client
client.print(s);
delay(1);
Serial.println("Client disonnected");
// The client will actually be disconnected
// when the function returns and 'client' object is detroyed
}