Parsing JSON data in Processing

[mfusco]

Hi,

In this Processing documentation, a JSON file can be loaded with this line of code:

json = loadJSONObject("data.json");

I would like to do the same, but from a serial input from an Arduino. I tried this:

val = myPort.readString(); 
  
  if (val != null) {
    data = loadJSONObject(val);
}

However, I get the error:

The file is missing or inaccessible, make sure the URL is valid or that the file has been added to your sketch and is readable.

Is there a way to read and parse serial JSON data?

[horace]

possibly you have end of line characters in the String
try

val = myPort.readStringUntil('\n')

readStringUntil() will read the string until '\n' is found and discards it

[mfusco]

Hi,

Thank you for your response, however that didn't work.

[horace]

with readString() try setting the Serial monitor input to "No Line Ending"

[mfusco]

Hi,

Thanks. How would I go about that?

[sterretje]

Personally I would ask the question on the Processing forum: https://discourse.processing.org/.

There are a few people here that have worked with Processing but not many.