lut48x256.h

#define WAVEFORM_MAX_STEP 48UL
#define WAVEFORM_TYPES 8

uint8_t Ramp[]={0,5,10,16,21,27,32,37,43,48,54,59,65,70,75,81,86,92,97,103,108,113,119,124,130,135,141,146,151,157,162,168,173,179,184,189,195,200,206,211,217,222,227,233,238,244,249,255};
uint8_t InvRamp[]={255,249,244,238,233,227,222,217,211,206,200,195,189,184,179,173,168,162,157,151,146,141,135,130,124,119,113,108,103,97,92,86,81,75,70,65,59,54,48,43,37,32,27,21,16,10,5,0};
uint8_t Triangle[]={0,10,21,32,43,54,65,75,86,97,108,119,130,141,151,162,173,184,195,206,217,227,238,249,249,238,227,217,206,195,184,173,162,151,141,130,119,108,97,86,75,65,54,43,32,21,10,0};
uint8_t Rect[]={255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0};
uint8_t InvRect[]={0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255};
uint8_t Sine[]={0,1,5,10,18,27,39,52,66,82,98,115,132,149,165,181,196,210,222,233,241,248,252,255,255,252,248,241,233,222,210,196,181,165,149,132,115,98,82,66,52,39,27,18,10,5,1,0};
uint8_t InvSine[]={255,254,250,245,237,228,216,203,189,173,157,140,123,106,90,74,59,45,33,22,14,7,3,0,0,3,7,14,22,33,45,59,74,90,106,123,140,157,173,189,203,216,228,237,245,250,254,255};

uint8_t Rnd(){ return (uint8_t)random(255); }

uint8_t* waveform[WAVEFORM_TYPES]={
  Ramp,
  InvRamp,
  Triangle,
  Rect,
  InvRect,
  Sine,
  InvSine,
  InvSine //dummy, for rnd
};


const char waveformName[WAVEFORM_TYPES][5]={
  { 'R','a','m','p',0 },
  { 'i','R','a','m',0 },
  { 'T','r','i','a',0 },
  { 'R','e','c','t',0 },
  { 'i','R','e','c',0 },
  { 'S','i','n','e',0 },
  { 'i','S','i','n',0 },
  { 'R','n','d',' ',0 },
};