Sending multiples variables via Serial

Projects Programming
1

Hi, recentrly i saw a video about sending multiple variables via Serial to a software on the computer, and here is the code i saw.

void setup() {
  Serial.begin(9600);
}

void loop() {
  int sensor1 = analogRead(A0);
  int sensor2 = analogRead(A2);
  int sensor3 = analogRead(A3);

  char text[40];
  sprintf(text, "%d,%d,%d/n", sensor1, sensor2, sensor3);

  Serial.println(text);
  delay(100);
}

Basically what i understood is that sprintf() combines variables and text into an char array and it's better to use this function when u have to combine these 2 elements into a string (tell me if it's wrong).

But the point is: when, for example, you make a serial comunication betwen 2 arduinoes, how do you separe the variables contained in the string that you have just received?

Cheers, Luca.

BTW, here is the video that i saw.

2

Serial Input Basics - updated - #3 by Robin2

3

A thought for you:

When you read, there are multiple statements written in sentences and paragraphs. How do you separate those?

4

I think that the parsing example (#5), of the serial input basics tutorial, would be more appropriate for receiving and parsing data from a comma delimited string.

5

thanks guys for reatching out.

6

To do so is not wrong, but it's not better, it simply does not matter at all.
Well, it's error prone, because your text buffer might be too small.

BTW: Why do you send the extra two characters "/n" before the newline, produced by the following Serial.println?

7

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