Cant display scrolling text

[Soumojit28]

IMPORTANT

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Subject of the issue

Cant display scrolling text, I need the minimal code to display a text one after one. I made a code but its not working, can you pls help

Your Environment

Library Version: 3.2.0 Arduino IDE version: 1.8.10 Hardware model/type: Arduino Nano and FS16 OS and Version: Windows 10

Steps to Reproduce

I just connected all things properly, I am using a 4 matrix module FS16 with a arduino nano, The example codes are working fine

Expected Behaviour

It should scroll the provided text I thing

Actual Behaviour

Nothing Displays in the matrix

Code Demonstrating the Issue

#include <MD_Parola.h>
#include <MD_MAX72xx.h>
#include <SPI.h>

#define HARDWARE_TYPE MD_MAX72XX::FC16_HW
#define MAX_DEVICES 4

#define CLK_PIN   13
#define DATA_PIN  11
#define CS_PIN    10

MD_Parola P = MD_Parola(HARDWARE_TYPE, CS_PIN, MAX_DEVICES);

void setup(void)
{
  P.begin();
}

void loop(void)
{

  P.displayScroll("Hello", PA_CENTER, PA_SCROLL_LEFT, 100);
  P.displayAnimate();
  P.displayScroll("World", PA_CENTER, PA_SCROLL_LEFT, 100);
  P.displayAnimate();

}

[MajicDesigns]

It takes many many calls to displayAnimate() for the animation to complete. Please read the documentation and look at the structure of the examples to see what is needed. At a minimum you code needs to change to

void setup(void) { P.begin(); P.displayScroll("Hello", PA_CENTER, PA_SCROLL_LEFT, 100); }

void loop(void) { P.displayAnimate(); }

[Soumojit28]

I tried to understand some example but having some problems, why p.displayScroll in void setup cant I put that in the loop part, and according to your code lets assume I want to print another text after then what should I do?

[MajicDesigns]

displayAnimate() will return true when the animation is completed. You will see that all the examples have a section similar to this in the main loop

void loop(void) { if (P.displayAnimate()) { // load the new string P.displayReset() } }

If you really don't care about doing something else while the string animates then you can also do something like this, although it is not recommended as best practice

// do something to load a new string while (!P.displayAnimate()) {} // busy wait loop // load another string while (!P.displayAnimate()) {} // busy wait loop // etc