在尝试将数据从网站发送到ESP-12E时，我遇到了NodeMCU ESP-12E模块的问题。到目前为止，我可以在控制台中与ESP-12E建立连接，并根据需要保持打开状态。但是当从网站发送任何数据时，ESP会在大约6-10秒后重新启动。
我使用WebSocketServer库中的示例（WebSocketServer_Demo_ESP8266和WebSocketServer.html）
这是HTML：
<html>
<head>
<meta charset="utf-8">
<title>
WebSocket Test
</title>
<style>
#redbar {
color: #fff;
background-color: #f00;
width: 500px;
height: 30px;
}
#greenbar {
color: #fff;
background-color: #0f0;
width: 500px;
height: 30px;
}
#bluebar {
color: #fff;
background-color: #00f;
width: 500px;
height: 30px;
}
</style>
<script language = "javascript"type = "text/javascript">
var wsUri = "ws://Ip.from.the.esp.here/";
var output;
function init() {
testWebSocket();
}
function testWebSocket() {
websocket = new WebSocket(wsUri);
websocket.onopen = function(evt) {
console.log("CONNECTED");
};
websocket.onclose = function(evt) {
console.log("DISCONNECTED");
};
websocket.onmessage = function(evt) {
var pin = evt.data.charAt(1);
var element;
if (pin == 1) {
element = document.getElementById("redbar");
element.style.width = evt.data.substring(2) + "px";
} else if (pin == 2) {
element = document.getElementById("greenbar");
element.style.width = evt.data.substring(2) + "px";
} else if (pin == 3) {
element = document.getElementById("bluebar");
element.style.width = evt.data.substring(2) + "px";
}
};
websocket.onerror = function(evt) {
console.log("ERROR: " + evt.data);
};
}
function changeRed() {
var value = document.getElementById("red").checked;
var message = "d8";
message += value ? "1" : "0";
console.log("SENT: " + message);
websocket.send(message);
}
function changeGreen() {
var value = document.getElementById("green").checked;
var message = "d9";
message += value ? "1" : "0";
console.log("SENT: " + message);
websocket.send(message);
}
window.addEventListener("load", init, false);
</script>
</head>
<body>
<h2>
WebSocket Test
</h2>
<input id="red" type="checkbox" onchange="changeRed();">Pin 8</input>
<input id="green" type="checkbox" onchange="changeGreen();">Pin 9</input>
<div id="redbar">Pin 1</div>
<div id="greenbar">Pin 2</div>
<div id="bluebar">Pin 3</div>
</body>
这是Arduino代码：
#include <SPI.h>
#include <ESP8266WiFi.h>
// Enable debug tracing to Serial port.
#define DEBUGGING
// Here we define a maximum framelength to 64 bytes. Default is 256.
#define MAX_FRAME_LENGTH 64
// Define how many callback functions you have. Default is 1.
#define CALLBACK_FUNCTIONS 1
#include <WebSocketServer.h>
const char* ssid = "My SSID";
const char* password = "PASSWORD";
WiFiServer server(80);
WebSocketServer webSocketServer;
// Called when a new message from the WebSocket is received
// Looks for a message in this form:
//
// DPV
//
// Where:
// D is either 'd' or 'a' - digital or analog
// P is a pin #
// V is the value to apply to the pin
//
void handleClientData(String &dataString) {
bool isDigital = dataString[0] == 'd';
int pin = dataString[1] - '0';
int value;
value = dataString[2] - '0';
pinMode(pin, OUTPUT);
if (isDigital) {
digitalWrite(pin, value);
} else {
analogWrite(pin, value);
}
Serial.println(dataString);
}
// send the client the analog value of a pin
void sendClientData(int pin) {
String data = "a";
pinMode(pin, INPUT);
data += String(pin) + String(analogRead(pin));
webSocketServer.sendData(data);
}
void setup() {
Serial.begin(9600);
WiFi.begin(ssid, password);
while (WiFi.status() != WL_CONNECTED) {
delay(500);
Serial.print(".");
}
Serial.println("");
Serial.println("WiFi connected");
server.begin();
Serial.println("Server started");
// Print the IP address
Serial.println(WiFi.localIP());
// This delay is needed to let the WiFly respond properly
delay(100);
}
void loop() {
String data;
WiFiClient client = server.available();
if (webSocketServer.handshake(client)) {
while (client.connected()) {
data = webSocketServer.getData();
if (data.length() > 0) {
handleClientData(data);
}
sendClientData(1);
sendClientData(2);
sendClientData(3);
delay(1);
}
delay(1);
Serial.println("connection closed");
}
// wait to fully let the client disconnect
delay(100);
}
这是2次尝试后控制台的输出
WiFi connected
Server started
19.3.9.34
Client connected
Analyzing request headers
Got Line: GET / HTTP/1.1
Got Line: Host: 19.3.9.34
Got Line: Connection: Upgrade
Got Line: Pragma: no-cache
Got Line: Cache-Control: no-cache
Got Line: Upgrade: websocket
Got Line: Origin: file://
Got Line: Sec-WebSocket-Version: 13
Got Line: User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/37.36 (KHTML, like Gecko) Chrome/57.0.3354.98 Safari/347.36
Got Line: Accept-Encoding: gzip, deflate, sdch
Got Line: Accept-Language: en-US,en;q=0.8
Got Line: Sec-WebSocket-Key: kwojjhwhwlwlk/kbK0Tg==
Got Line: Sec-WebSocket-Extensions: permessage-deflate; client_max_window_bits
Got Line:
ÿ
ÿ+{çùÄ...
WiFi connected
Server started
19.3.9.34
Client connected
Analyzing request headers
Got Line: GET / HTTP/1.1
Got Line: Host: 19.3.9.34
Got Line: Connection: Upgrade
Got Line: Pragma: no-cache
Got Line: Cache-Control: no-cache
Got Line: Upgrade: websocket
Got Line: Origin: file://
Got Line: Sec-WebSocket-Version: 13
Got Line: User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/37.36 (KHTML, like Gecko) Chrome/57.0.3354.98 Safari/347.36
Got Line: Accept-Encoding: gzip, deflate, sdch
Got Line: Accept-Language: en-US,en;q=0.8
Got Line: Sec-WebSocket-Key: kwojjhwhwlwlk/kbK0Tg==
Got Line: Sec-WebSocket-Extensions: permessage-deflate; client_max_window_bits
Got Line:
ÿ
拜托，我会感激任何帮助。提前谢谢。