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I am trying to run a Sketch program using Processing 4.0. The code is from FreeNove raspberrypi kit.

I am getting this error

No library found for processing.io
No library found for processing.io
No library found for processing.io
Libraries must be installed in a folder named 'libraries' inside the sketchbook folder (see the Preferences window).
The package “processing.io” does not exist. You might be missing a library.

The code is snippt which seem to include processing.io is

/*****************************************************
 * Filename    : Sketch_09_1_1_Motor
 * Description : Control speed and direction of the motor
 * auther      : www.freenove.com
 * modification: 2016/08/22
 *****************************************************/
import processing.io.*;

int motorPin1 = 17;    //connect to the L293D
int motorPin2 = 27;
int enablePin = 22;
final int borderSize = 45;    //border size
Manu Chadha
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1 Answers1

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Strange, normally Processing ARM should ship with the processing.io library.

If the install method the Freenove manual provides (curl https://processing.org/download/install-arm.sh | sudo sh) doesn't work, I recommend trying the official Download page and selecting the Raspberry PI CPU architecture that fits (32 or 64 bit).

In the past I had success using the Processing 3 Raspberry PI Image (which has Processing preinstalled): this could be a backup plan if you have spare microSD card (or don't mind flashing over you're existing one). Even though it's Processing 3, hopefully the same processing.io features you need will be available.

George Profenza
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  • Thanks. I tried the `curl` command but got an "unexpected redirection error". Then I downloaded the `tgz` file of `Processing 4.0` for `32 bit` `raspberrypi`. Ran its `install.sh` script and then tried the `.pde` program. But got the error. – Manu Chadha May 15 '22 at 17:22
  • Which version of Raspberry PI are you using ? Also, did you have any luck flashing the Processing 3 Raspberry PI image ? – George Profenza May 15 '22 at 18:31
  • pi-3. I didn't try flash. Don't prefer that route to be honest as it doesn't explain why I can't simply install and run `Processing` – Manu Chadha May 16 '22 at 07:26
  • pi-3 has a 64-bit ARM CPU, so the https://github.com/processing/processing4/releases/download/processing-1283-4.0b8/processing-4.0b8-linux-arm64.tgz should work in theory. (processing-4.0b8/modes/java/libraries/io/library/linux-arm64 is present). If for some reason it still doesn't pickup the processing.io library but the files are there, maybe some java classpaths are going awry. – George Profenza May 16 '22 at 10:49
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    I made it work by installing `processing 3.5.4` instead of `processing 4.0`. – Manu Chadha May 16 '22 at 21:19