RGB LED STRIP programming question

Other Hardware LEDs and Multiplexing
10

Are you saying you want it to act like the button is pressed once for each character that is received? Like this:

#include <FastSPI_LED.h>

#define NUM_LEDS 288

struct CRGB { 
  unsigned char r; 
  unsigned char g; 
  unsigned char b; 
};

struct CRGB *leds;

const int SS_PIN = 4;

void setup() {
  Serial.begin(115200);
  FastSPI_LED.setLeds(NUM_LEDS);
  FastSPI_LED.setChipset(CFastSPI_LED::SPI_WS2801);
  FastSPI_LED.setDataRate(3);
  //FastSPI_LED.setChipset(CFastSPI_LED::SPI_LPD6803);
  //FastSPI_LED.setChipset(CFastSPI_LED::SPI_HL1606);
  //FastSPI_LED.setChipset(CFastSPI_LED::SPI_595);
  //FastSPI_LED.setChipset(CFastSPI_LED::SPI_WS2801);

  FastSPI_LED.setPin(SS_PIN);

  FastSPI_LED.init();
  FastSPI_LED.start();

  leds = (struct CRGB*)FastSPI_LED.getRGBData(); 
  memset(leds, 0, NUM_LEDS * 3);
}

void loop() {
  if (Serial.available()>=1) {
      unsigned char value=Serial.read(); // Read a brightness value
     
      leds[0].r = value;
      leds[0].g = value;
      leds[0].b = value;
      }
  
  // Move all the lights down one step
  for(int i = NUM_LEDS-1; i > 0; i-- ) {
      leds[i].r = leds[i-1].r;
      leds[i].g = leds[i-1].g;
      leds[i].b = leds[i-1].b;
      }

  leds[0].r /= 2;
  leds[0].g /= 2;
  leds[0].b /= 2;

  FastSPI_LED.show();
  delay(30);
}