C based look up table for a 'breathing LED'. The 'breathing' effect is used to add a more organic feel to LED outputs.



The dataset is not sinusoidal, as the 'breath' is taken in and let out faster than the rest in between breaths. This is based on data sampling of real human breath

The CSV file is the raw values for plotting

The .h header file should be included in a project and the raw uint8_t (0-255) or the breathing_float() macro can be used to get the index in the table. The table is 255 entries as defined by BREATHING_LUT_SIZE.

Example usage:

#include 

#include "breathing_LUT.h"



int main(int argc, char ** argv)

{

  while(1)

  {

    for(x=0;x    {

      example_led_set_int8(breathing_LUT[x]);

      // OR 

      example_led_set_float(breathing_float(x));

    }

  }

  return 0;

}