send multiple serial data from arduino to matlab

Projects Programming
1

hi there

i am currently working on a project where i have 2 potentiometers, i need to read the values from potentiometer and send the values to Matlab for plotting the data in x and y axis

this my arduino code for reading the values from potentiometer

void setup() 
{
  // Start serial at 9600 baud
  Serial.begin(9600); 
}

    void loop() 
{
  // Read the input on analog pin 11 and 12:
  int sensorValue = analogRead(A11);
  int sensorValue2 = analogRead(A12);


  Serial.print(sensorValue,4);
  Serial.print(" Sensor Value 1");
  Serial.print(sensorValue2,4);
  Serial.print(" sensorValue 2 ");

Serial.println();
 
}

i like to know how to send above the serial data to matlab

2

i found this thread but the code didn't work

You wrote some code. It did something.
You expected the code to do something.

All we can tell is that what it did was not what you wanted. Since you've not told us what it did, or how that differs from your expectations, you are on your own. Good luck.

3

hi mate

i like to know how to send multiple serial data from arduio to matlab

thanks

4

I don't think that's what you want, since you HAVE code that does that.

I think what you want is to USE that data in MATLAB, and that is NOT an Arduino question.

5

Try

void setup() 
{
  // Start serial at 9600 baud
  Serial.begin(9600); 
}

    void loop() 
{
  // Read the input on analog pin 11 and 12:
  int sensorValue = analogRead(A11);
  int sensorValue2 = analogRead(A12);


  Serial.print(sensorValue);
  Serial.print(",");
  Serial.println(sensorValue2);
  
/* 
And you will send strings like: 
 10,20\n
 11,15\n
 100,255\n
where \n is line feed and I removed the text strings, which are not necessary IMHO.
.and so on .....
The MATLAB receiver code is yours, see below .. 
*/

 
}

I have no clue how it the code to receive data from a serial line looks like in Matlab. But this is a fragment I'm using Processing.

// Read serial data           
   while (myPort.available() > 0) { // New data? 
   char ch = myPort.readChar(); 
   if (ch >= '0' && ch <= '9') {
    value[arrayIndex] = (value[arrayIndex] * 10 + (ch - '0'));
   } else if (ch == ',') {
     arrayIndex++;
     kommaZahl++;
   } else if ( ch == '\n') {
     // Print results when in debugging mode       
     if (debug) {
       println(value[0]);
       println(value[1]);
     }

And you can easily check the results using the serial console in ARDUINO.

You may find some code for Matlab here How To Send Data From The Arduino To MATLAB Communication