Arduino – APA102 – 4 tlačítková kávesnice

Jednoduchý příklad jak pomocí jednoto tlačítka nechat obíhat 1 LED po pásku…

/* This example shows how to make an LED pattern with a large
 * dynamic range using the the extra 5-bit brightness register in
 * the APA102.
 *
 * It sets every LED on the strip to white, with the dimmest
 * possible white at the input end of the strip and the brightest
 * possible white at the other end, and a smooth logarithmic
 * gradient between them.
 *
 * The dimmest possible white is achieved by setting the red,
 * green, and blue color channels to 1, and setting the
 * brightness register to 1.  The brightest possibe white is
 * achieved by setting the color channels to 255 and setting the
 * brightness register to 31.
 */

/* By default, the APA102 library uses pinMode and digitalWrite
 * to write to the LEDs, which works on all Arduino-compatible
 * boards but might be slow.  If you have a board supported by
 * the FastGPIO library and want faster LED updates, then install
 * the FastGPIO library and uncomment the next two lines: */
// #include <FastGPIO.h>
// #define APA102_USE_FAST_GPIO

#include <APA102.h>

// Define which pins to use.
const uint8_t dataPin = 11;
const uint8_t clockPin = 12;
int buttonPin = 10;

APA102<dataPin, clockPin> ledStrip;

// ledCount = počet LED na pásku
const uint16_t ledCount = 30;
rgb_color colors[ledCount];


void setup()
{
  pinMode(buttonPin, INPUT_PULLUP);
  
 ledStrip.startFrame();
 /*OPRAVIT NA  for(uint16_t i = 0; i < ledCount; i++) */
    for(uint16_t i = 0; i < 30; i++)
    {
      // poslat barvu na jednu LED:  Červená(0-255), Zelená(0-255), Modrá(0-255), Intenzita svitu (0-31)
      ledStrip.sendColor(0, 0, 0, 0);
    }
 
   //ukončení posílání
   ledStrip.endFrame(ledCount);

}



void loop()
{
  
int Red = 255;
int Green = 0;
int Blue = 0;

int Alfa = 31;

 

      for(uint16_t i = 0; i < ledCount; i++)
          {
            do {
              delay(10);
            } while (digitalRead(buttonPin) == HIGH);
            ledStrip.startFrame();
             for(uint16_t j = 0; j < ledCount; j++) {


                    if( i == j){
                         ledStrip.sendColor(Red, Green, Blue, Alfa);
                      }
                    else{
                         ledStrip.sendColor(Red, Green, Blue, 0); // Alfa = 0 .. tedy vypnuto
                      }
                 

             }
             
            ledStrip.endFrame(ledCount);
            //delay(300);
            
          }





 

}