当我按下另一个按钮时，如何切换到另一个命令。它始终在＆＃39; IF ..＆＃39;
如果按下按钮6，它将变为LEFT ON，当我再次按下按钮6时，它必须是REVERSE但它不能。
#include <SoftwareSerial.h>
int motorPin1=4;
int motorPin2=6;
int enablePin1=5;
int motorPin3=8;
int motorPin4=9;
int enablePin2=10;
#define DEBUG true
SoftwareSerial esp8266(2,3); // make RX Arduino line is pin 2, make TX Arduino line is pin 3.
// This means that you need to connect the TX line from the esp to the Arduino's pin 2
// and the RX line from the esp to the Arduino's pin 3
void setup()
{
Serial.begin(9600);
esp8266.begin(9600); // your esp's baud rate might be different
pinMode(motorPin1,OUTPUT);
digitalWrite(motorPin1,LOW);
pinMode(motorPin2,OUTPUT);
digitalWrite(motorPin2,LOW);
pinMode(enablePin1, OUTPUT);
digitalWrite(enablePin1,HIGH);
pinMode(motorPin3,OUTPUT);
digitalWrite(motorPin3,LOW);
pinMode(motorPin4,OUTPUT);
digitalWrite(motorPin4,LOW);
pinMode(enablePin2,OUTPUT);
digitalWrite(enablePin2,LOW);
sendCommand("AT+RST\r\n",1000,DEBUG); // reset module
sendCommand("AT+CWMODE=1\r\n",1000,DEBUG); // configure as access point
sendCommand("AT+CWJAP=\"PanduGanteng\",\"akhirpekan666\"\r\n",1000,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=1,8080\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); // wait for the serial buffer to fill up (read all the serial data)
// get the connection id so that we can then disconnect
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="); // advance cursor to "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
}
digitalWrite(pinNumber, !digitalRead(pinNumber)); // toggle pin
// build string that is send back to device that is requesting pin toggle
String content;
content = "Pin ";
content += pinNumber;
content += " is ";
if(digitalRead(6))
{
content = "LEFT ON";
digitalWrite(motorPin2,HIGH);
digitalWrite(motorPin3,HIGH);
}
else if(!digitalRead(6))
{
content = "LEFT OFF";
digitalWrite(motorPin2,LOW);
digitalWrite(motorPin3,LOW);
}
if(digitalRead(9))
{
content = "REVERSE ON";
digitalWrite(motorPin2,HIGH);
digitalWrite(motorPin4,HIGH);
}
else if(!digitalRead(9))
{
content = "LEFT OFF";
digitalWrite(motorPin2,LOW);
digitalWrite(motorPin4,LOW);
}
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;
}
其＆＃39; IF＆＃39;这让我感到困惑：
if(digitalRead(6))
{
content = "LEFT ON";
digitalWrite(motorPin2,HIGH);
digitalWrite(motorPin3,HIGH);
}
else if(!digitalRead(6))
{
content = "LEFT OFF";
digitalWrite(motorPin2,LOW);
digitalWrite(motorPin3,LOW);
}
if(digitalRead(9))
{
content = "REVERSE ON";
digitalWrite(motorPin2,HIGH);
digitalWrite(motorPin4,HIGH);
}
else if(!digitalRead(9))
{
content = "LEFT OFF";
digitalWrite(motorPin2,LOW);
digitalWrite(motorPin4,LOW);
}