#include <SoftwareSerial.h>
#define DEBUG true
SoftwareSerial esp8266(8,9);
void setup()
{
Serial.begin(9600);
esp8266.begin(9600);
pinMode(11,OUTPUT);
digitalWrite(11,LOW);
pinMode(12,OUTPUT);
digitalWrite(12,LOW);
pinMode(13,OUTPUT);
digitalWrite(13,LOW);
pinMode(10,OUTPUT);
digitalWrite(10,LOW);
sendCommand("AT+RST\r\n",2000,DEBUG); // reset module
sendCommand("AT+CWMODE=1\r\n",1000,DEBUG); // configure as access point
sendCommand("AT+CWJAP=\"SSID\",\"PASSWD\"\r\n",3000,DEBUG);
delay(10000);
sendCommand("AT+CIFSR\r\n",1000,DEBUG); // get ip address
sendCommand("AT+CIPMUX=1\r\n",1000,DEBUG); // configure for multiple connections
sendCommand("AT+CIPSERVER=1,80\r\n",1000,DEBUG); // turn on server on port 80
Serial.println("Server Ready");
}
void loop()
{
if(esp8266.available()) // check if the esp is sending a message
{
if(esp8266.find("+IPD,"))
{
delay(1000);
int connectionId = esp8266.read()-48; // subtract 48 because the read() function returns
// the ASCII decimal value and 0 (the first decimal number) starts at 48
esp8266.find("pin=");
int pinNumber = (esp8266.read()-48); // get first number i.e. if the pin 13 then the 1st number is 1
int secondNumber = (esp8266.read()-48);
if(secondNumber>=0 && secondNumber<=9)
{
pinNumber*=10;
pinNumber +=secondNumber; // get second number, i.e. if the pin number is 13 then the 2nd number is 3, then add to the first number
}
if((pinNumber==12)&&(pinNumber!=11))
{digitalWrite(12, HIGH);
digitalWrite(11,LOW);}
if((pinNumber==11)&&(pinNumber!=12))
{digitalWrite(12, LOW);
digitalWrite(11,HIGH);}
// build string that is send back to device that is requesting pin toggle
String content;
content = "Pin ";
content += pinNumber;
content += " is ";
if(digitalRead(pinNumber))
{
content += "ON";
}
else
{
content += "OFF";
}
sendHTTPResponse(connectionId,content);
// make close command
// String closeCommand = "AT+CIPCLOSE=";
// closeCommand+=connectionId; // append connection id
// closeCommand+="\r\n";
// sendCommand(closeCommand,1000,DEBUG); // close connection
}
}
}
/*
* Name: sendData
* Description: Function used to send data to ESP8266.
* Params: command - the data/command to send; timeout - the time to wait for a response; debug - print to Serial window?(true = yes, false = no)
* Returns: The response from the esp8266 (if there is a reponse)
*/
String sendData(String command, const int timeout, boolean debug)
{
String response = "";
int dataSize = command.length();
char data[dataSize];
command.toCharArray(data,dataSize);
esp8266.write(data,dataSize); // send the read character to the esp8266
if(debug)
{
Serial.println("\r\n====== HTTP Response From Arduino ======");
Serial.write(data,dataSize);
Serial.println("\r\n========================================");
}
long int time = millis();
while( (time+timeout) > millis())
{
while(esp8266.available())
{
// The esp has data so display its output to the serial window
char c = esp8266.read(); // read the next character.
response+=c;
}
}
if(debug)
{
Serial.print(response);
}
return response;
}
/*
* Name: sendHTTPResponse
* Description: Function that sends HTTP 200, HTML UTF-8 response
*/
void sendHTTPResponse(int connectionId, String content)
{
// build HTTP response
String httpResponse;
String httpHeader;
// HTTP Header
httpHeader = "HTTP/1.1 200 OK\r\nContent-Type: text/html; charset=UTF-8\r\n";
httpHeader += "Content-Length: ";
httpHeader += content.length();
httpHeader += "\r\n";
httpHeader +="Connection: close\r\n\r\n";
httpResponse = httpHeader + content + " "; // There is a bug in this code: the last character of "content" is not sent, I cheated by adding this extra space
sendCIPData(connectionId,httpResponse);
}
/*
* Name: sendCIPDATA
* Description: sends a CIPSEND=<connectionId>,<data> command
*
*/
void sendCIPData(int connectionId, String data)
{
String cipSend = "AT+CIPSEND=";
cipSend += connectionId;
cipSend += ",";
cipSend +=data.length();
cipSend +="\r\n";
sendCommand(cipSend,1000,DEBUG);
sendData(data,1000,DEBUG);
}
/*
* Name: sendCommand
* Description: Function used to send data to ESP8266.
* Params: command - the data/command to send; timeout - the time to wait for a response; debug - print to Serial window?(true = yes, false = no)
* Returns: The response from the esp8266 (if there is a reponse)
*/
String sendCommand(String command, const int timeout, boolean debug)
{
String response = "";
esp8266.print(command); // send the read character to the esp8266
long int time = millis();
while( (time+timeout) > millis())
{
while(esp8266.available())
{
// The esp has data so display its output to the serial window
char c = esp8266.read(); // read the next character.
response+=c;
}
}
if(debug)
{
Serial.print(response);
}
return response;
}
嗨，我有这个代码esp将连接到互联网，以便我可以打开或关闭从移动应用程序领导我想要更改它。我想esp8266 01 ti是一个接入点..我不想使用互联网我希望手机直接连接到esp8266 我需要做哪些更改以及如何将esp8266配置为接入点
答案 0 :(得分：0)
初始化ESP时，您在“站点模式”
中对其进行了配置sendCommand("AT+CWMODE=1\r\n",1000,DEBUG);
sendCommand("AT+CWJAP=\"SSID\",\"PASSWD\"\r\n",3000,DEBUG);
要在AP模式下进行配置，您应将其替换为：
sendCommand("AT+CWMODE=2\r\n",1000,DEBUG);
模式：
1表示站模式
2表示AP模式
3表示AP +站模式