Pardon me, if there something missing in explanation. Code was changed to Blynk environment. What I need that motor worked continuously from pressed button or from switch, like usual DC motor. It was changed from next code:
//include libraries
#include <SoftwareSerial.h>
#include <Stepper.h>
SoftwareSerial esp8266(3, 2); //RX pin = 3, TX pin = 2
//definition of variables
#define DEBUG true //show messages between ESP8266 and Arduino in serial port
const int stepsPerRevolution = 500;
int state = 5;
Stepper rightStepper(stepsPerRevolution, 8,10,9,11);
Stepper leftStepper(stepsPerRevolution, 4,6,5,7);
//*****
//SETUP
//*****
void setup()
{
//start communication
Serial.begin(9600);
esp8266.begin(19200);
sendData("AT+RST\r\n", 2000, DEBUG); //reset module
sendData("AT+CWMODE=1\r\n", 1000, DEBUG); //set station mode
sendData("AT+CWJAP="Thaiane","1391162683"\r\n", 2000, DEBUG); //connect wi-fi network
while(!esp8266.find("OK")) { //wait for connection
}
sendData("AT+CIFSR\r\n", 1000, DEBUG); //show IP address
sendData("AT+CIPMUX=1\r\n", 1000, DEBUG); //allow multiple connections
sendData("AT+CIPSERVER=1,80\r\n", 1000, DEBUG); // start web server on port 80
//Define motor speed
rightStepper.setSpeed(60);
leftStepper.setSpeed(60);
}
void loop()
{
if (esp8266.available()) //verify incoming data
{
if (esp8266.find("+IPD,")) //if there is a message
{
String msg;
esp8266.find("?"); //look for the message
msg = esp8266.readStringUntil(' '); //read whole message
String command = msg.substring(0, 3); //first 3 characters = command
String valueStr = msg.substring(4); //next 3 characters = value
int value = valueStr.toInt();
if (DEBUG) {
Serial.println(command);
Serial.println(value);
}
//move forward
if(command == "cm1") {
state = 1;
}
//move backward
if(command == "cm2") {
state = 2;
}
//turn right
if(command == "cm3") {
state = 3;
}
//turn left
if(command == "cm4") {
state = 4;
}
//do nothing
if(command == "cm5") {
state = 5;
}
}
}
//move forward
if (state == 1) {
rightStepper.step(1);
leftStepper.step(-1);
}
//move backward
if (state == 2) {
rightStepper.step(-1);
leftStepper.step(1);
}
//move right
if (state == 3) {
rightStepper.step(1);
leftStepper.step(1);
}
//move left
if (state == 4) {
rightStepper.step(-1);
leftStepper.step(-1);
}
//do nothing
if (state == 5) {
}
}
//*******************
//Auxiliary functions
//*******************
String sendData(String command, const int timeout, boolean debug)
{
String response = "";
esp8266.print(command);
long int time = millis();
while ( (time + timeout) > millis())
{
while (esp8266.available())
{
char c = esp8266.read();
response += c;
}
}
if (debug)
{
Serial.print(response);
}
return response;
}
Original project HERE.
