Hi guys i have a code that i want to put into a switch case statement
like :-
if i send 1 via serial monitor it activates this code
if i send 2 via serial monitor it deactivates this code
please help i am new at programming
#include <Servo.h> //Servo motor library. This is standard library
#include <NewPing.h> //Ultrasonic sensor function library. You must install this library
//our L298N control pins
const int LeftMotorForward = 7;
const int LeftMotorBackward = 6;
const int RightMotorForward = 4;
const int RightMotorBackward = 5;
//sensor pins
#define trig_pin A1 //analog input 1
#define echo_pin A2 //analog input 2
#define maximum_distance 200
boolean goesForward = false;
int distance = 100;
NewPing sonar(trig_pin, echo_pin, maximum_distance); //sensor function
Servo servo_motor; //our servo name
void setup(){
pinMode(RightMotorForward, OUTPUT);
pinMode(LeftMotorForward, OUTPUT);
pinMode(LeftMotorBackward, OUTPUT);
pinMode(RightMotorBackward, OUTPUT);
servo_motor.attach(9); //our servo pin
servo_motor.write(90);
delay(2000);
distance = readPing();
delay(100);
distance = readPing();
delay(100);
distance = readPing();
delay(100);
distance = readPing();
delay(100);
}
void loop(){
int distanceRight = 0;
int distanceLeft = 0;
delay(50);
if (distance <= 20){
moveStop();
delay(300);
moveBackward();
delay(400);
moveStop();
delay(300);
distanceRight = lookRight();
delay(300);
distanceLeft = lookLeft();
delay(300);
if (distance >= distanceLeft){
turnRight();
moveStop();
}
else{
turnLeft();
moveStop();
}
}
else{
moveForward();
}
distance = readPing();
}
int lookRight(){
servo_motor.write(1);
delay(500);
int distance = readPing();
delay(100);
servo_motor.write(90);
return distance;
}
int lookLeft(){
servo_motor.write(180);
delay(500);
int distance = readPing();
delay(100);
servo_motor.write(90);
return distance;
delay(100);
}
int readPing(){
delay(70);
int cm = sonar.ping_cm();
if (cm==0){
cm=250;
}
return cm;
}
void moveStop(){
digitalWrite(RightMotorForward, LOW);
digitalWrite(LeftMotorForward, LOW);
digitalWrite(RightMotorBackward, LOW);
digitalWrite(LeftMotorBackward, LOW);
}
void moveForward(){
if(!goesForward){
goesForward=true;
digitalWrite(LeftMotorForward, HIGH);
digitalWrite(RightMotorForward, HIGH);
digitalWrite(LeftMotorBackward, LOW);
digitalWrite(RightMotorBackward, LOW);
}
}
void moveBackward(){
goesForward=false;
digitalWrite(LeftMotorBackward, HIGH);
digitalWrite(RightMotorBackward, HIGH);
digitalWrite(LeftMotorForward, LOW);
digitalWrite(RightMotorForward, LOW);
}
void turnRight(){
digitalWrite(LeftMotorForward, HIGH);
digitalWrite(RightMotorBackward, HIGH);
digitalWrite(LeftMotorBackward, LOW);
digitalWrite(RightMotorForward, LOW);
delay(500);
digitalWrite(LeftMotorForward, HIGH);
digitalWrite(RightMotorForward, HIGH);
digitalWrite(LeftMotorBackward, LOW);
digitalWrite(RightMotorBackward, LOW);
}
void turnLeft(){
digitalWrite(LeftMotorBackward, HIGH);
digitalWrite(RightMotorForward, HIGH);
digitalWrite(LeftMotorForward, LOW);
digitalWrite(RightMotorBackward, LOW);
delay(500);
digitalWrite(LeftMotorForward, HIGH);
digitalWrite(RightMotorForward, HIGH);
digitalWrite(LeftMotorBackward, LOW);
digitalWrite(RightMotorBackward, LOW);
}
Thanks in advance
W3C School C++ Switch statement:C++ Switch
sorry but i have tried before but it didnt worked thats why i asked here
TheMemberFormerlyKnownAsAWOL:
So, post what you tried.
// here is what i have tried
#include <Servo.h> //Servo motor library. This is standard library
#include <NewPing.h> //Ultrasonic sensor function library. You must install this library
#include<SoftwareSerial.h>
//our L298N control pins
const int LeftMotorForward = 2;
const int LeftMotorBackward = 4;
const int RightMotorForward = 7;
const int RightMotorBackward = 8;
//sensor pins
#define trig_pin A1 //analog input 1
#define echo_pin A2 //analog input 2
#define maximum_distance 200
boolean goesForward = false;
int distance = 100;
NewPing sonar(trig_pin, echo_pin, maximum_distance); //sensor function
Servo servo_motor; //our servo name
void setup(){
pinMode(RightMotorForward, OUTPUT);
pinMode(LeftMotorForward, OUTPUT);
pinMode(LeftMotorBackward, OUTPUT);
pinMode(RightMotorBackward, OUTPUT);
pinMode(13,OUTPUT);
servo_motor.attach(9); //our servo pin
servo_motor.write(115);
delay(2000);
distance = readPing();
delay(100);
distance = readPing();
delay(100);
distance = readPing();
delay(100);
distance = readPing();
delay(100);
Serial.begin(9600);
while (!Serial);
Serial.println("SERIAL COMMUNICATION STABLISHED");
}
void loop(){
if (Serial.available() > 0) {
int inByte = Serial.read();
switch (inByte) {
case '3':
digitalWrite(13, HIGH);
Serial.println("Command completed LED turned ON");
break;
case '4':
digitalWrite(13, LOW);
Serial.println("Command completed LED turned OFF");
break;
case '1':
Serial.println("automode turned ON");
int distanceRight = 0;
int distanceLeft = 0;
delay(50);
if (distance <= 20){
moveStop();
delay(300);
moveBackward();
delay(400);
moveStop();
delay(300);
distanceRight = lookRight();
delay(300);
distanceLeft = lookLeft();
delay(300);
if (distance >= distanceLeft){
turnRight();
moveStop();
}
else{
turnLeft();
moveStop();
}
}
else{
moveForward();
}
distance = readPing();
}
}
}
int lookRight(){
servo_motor.write(50);
delay(500);
int distance = readPing();
delay(100);
servo_motor.write(115);
return distance;
}
int lookLeft(){
servo_motor.write(170);
delay(500);
int distance = readPing();
delay(100);
servo_motor.write(115);
return distance;
delay(100);
}
int readPing(){
delay(70);
int cm = sonar.ping_cm();
if (cm==0){
cm=250;
}
return cm;
}
void moveStop(){
digitalWrite(RightMotorForward, LOW);
digitalWrite(LeftMotorForward, LOW);
digitalWrite(RightMotorBackward, LOW);
digitalWrite(LeftMotorBackward, LOW);
}
void moveForward(){
if(!goesForward){
goesForward=true;
digitalWrite(LeftMotorForward, HIGH);
digitalWrite(RightMotorForward, HIGH);
digitalWrite(LeftMotorBackward, LOW);
digitalWrite(RightMotorBackward, LOW);
}
}
void moveBackward(){
goesForward=false;
digitalWrite(LeftMotorBackward, HIGH);
digitalWrite(RightMotorBackward, HIGH);
digitalWrite(LeftMotorForward, LOW);
digitalWrite(RightMotorForward, LOW);
}
void turnRight(){
digitalWrite(LeftMotorForward, HIGH);
digitalWrite(RightMotorBackward, HIGH);
digitalWrite(LeftMotorBackward, LOW);
digitalWrite(RightMotorForward, LOW);
delay(500);
digitalWrite(LeftMotorForward, HIGH);
digitalWrite(RightMotorForward, HIGH);
digitalWrite(LeftMotorBackward, LOW);
digitalWrite(RightMotorBackward, LOW);
}
void turnLeft(){
digitalWrite(LeftMotorBackward, HIGH);
digitalWrite(RightMotorForward, HIGH);
digitalWrite(LeftMotorForward, LOW);
digitalWrite(RightMotorBackward, LOW);
delay(500);
digitalWrite(LeftMotorForward, HIGH);
digitalWrite(RightMotorForward, HIGH);
digitalWrite(LeftMotorBackward, LOW);
digitalWrite(RightMotorBackward, LOW);
}
And what problems did you have (apart from all the delays)?
code is compiled but not working on robot
What have you got Line ending set to in the Serial monitor ?
UKHeliBob:
What does that mean ?
i means when i upload the code and send the data via serial monitor (in this case 1) i didnt respond anything
You didn't even see "automode turned ON" printed in the monitor?
TheMemberFormerlyKnownAsAWOL:
You didn't even see "automode turned ON" printed in the monitor?
no i see the it serial monitor is working well with led and everything
Please stop using negatives.
Did you or did you not see the message "automode turned ON" when you sent a '1', and that the code did in fact respond?
yes it is printing 'automode turned on'
So, then you test the value of "distance".
What is the value of "distance" at this point?
Hint: if you didn't know what your code is doing, get it to tell you
yaa i dont understand some part of the code thats why i called for help
avanishpratap:
yaa i dont understand some part of the code thats why i called for help
Well, we don't know which parts you do understand, and which parts you don't, so unless you start telling us, this is going to be a slow and tedious process.
If we explain bits that you do understand, we're wasting our time.
Some might get bored.
if i send 2 via serial monitor it deactivates this code
I note that nothing in the code you posted tests for the input of a '2'
Put this
Serial.print(">");
Serial.print(inByte);
Serial.println("<");
after reading inByte from Serial
Do you see the values that you expect or do you see just the > and the < ?
yes i didnt have used 2 i am going to use that later when my code starts working
i just want you to put that entire code into a statement i which if i press 1 from serial monitor then only it starts the loop beacuse i am trying it to do from last 4 days and it didnt worked
i have tried if else and function etc but didnt get success