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fading on different color presets

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This commit is contained in:
Jonathan Wyss 2024-03-27 19:16:38 +01:00
parent d994c95941
commit 365dd49fbd
1 changed files with 49 additions and 44 deletions
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87
main.c
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@ -31,37 +31,49 @@
//8- 1kHz //8- 1kHz
// //
const float log_scale = 64./log(64./SCALE_FACTOR + 1.); int sec;
int msec;
uint16_t ticks; uint16_t ticks;
int ticks_sample;
ISR(TIMER1_OVF_vect) ISR(TIMER1_OVF_vect)
{ {
if(ticks < 65000) ticks_sample++;
{ if(ticks < 65000)
{
ticks++; ticks++;
} }
if(ticks > 65000) if(ticks >= 65000)
{ {
ticks=0; ticks=0;
} if(sec<255)
{
sec++;
}
else
{
sec=0;
}
}
} }
int main (void) int main (void)
{ {
int i,i2; int i,i2;
int i4=0;
int sum,avg; int sum,avg;
char sample[64]; char sample[64];
char buff[64]; char buff[64];
float fac_r=0.1; float fac_r=0.1;
float fac_g=0.1; float fac_g=0.5;
float fac_b=1; float fac_b=0.7;
msec=0; sec=0;
ticks=0; ticks=0;
ticks_sample=0;
struct cRGB led_bar1[8]; struct cRGB led_bar1[8];
Fader fader1[4]={{5,5,5},{7,3,2},{3,7,2},{2,3,7}};
//DDRB = (1<<mic);//would be setting output, default is input so no need for setting //DDRB = (1<<mic);//would be setting output, default is input so no need for setting
setupADC(); setupADC();
setupTimer(); setupTimer();
@ -81,49 +93,50 @@ int main (void)
sei(); sei();
while(1) while(1)
{ {
//######RECORD SAMPLES######
sum = 0;
ticks=0; //######RECORD SAMPLES######
sum = 0;
ticks_sample=0;
if(sec>3)
{
fac_r=(float)fader1[i4].r/10;
fac_g=(float)fader1[i4].g/10;
fac_b=(float)fader1[i4].b/10;
if(i4<3) {i4++;}
else {i4=0;}
sec=0;
}
for(i=0;i<64;i++) for(i=0;i<64;i++)
{ {
STARTADC; STARTADC;
sample[i] = (ADCH-128); //read Analog value register 8bit center -128 sample[i] = (ADCH-128); //read Analog value register 8bit center -128
//sample[i] = (sample[i] <= NOISE) ? 0 : (sample[i] - NOISE); //noise reduction //sample[i] = (sample[i] <= NOISE) ? 0 : (sample[i] - NOISE); //noise reduction
//im[i]=0; //pseudo data for funciton
//
sum+=sample[i];//dc-bias sum+=sample[i];//dc-bias
} }
//samplingrate -> 1/ca30'000'00r
avg = sum/64;//calculate bias avg = sum/64;//calculate bias
for(i=0;i<64;i++) for(i=0;i<64;i++)
{ {
sample[i]-=avg;//remove bias sample[i]-=avg;//remove bias
} }
fix_fftr(sample,6,0);//im[i] is alwa§§ys zero fix_fftr(sample,6,0);
//####Averaging Data####
// //####Averaging Data####
for(i=0;i<64;i++) for(i=0;i<64;i++)
{ {
if(sample[i]<0) sample[i] = 0; if(sample[i]<0) sample[i] = 0;
if(sample[i]>64) sample[i]=64; if(sample[i]>64) sample[i]=64; //define upper limit
sample[i] = sample[i] *SCALE_FACTOR; sample[i] = sample[i] *SCALE_FACTOR;
sample[i] = (sample[i]*0.7 + buff[i]*0.3); sample[i] = (sample[i]*0.7 + buff[i]*0.3); //influence of last sample on current sample
buff[i] = sample[i]; buff[i] = sample[i]; //store sample for next round
} }
for(i=0;i<8;i++) for(i=0;i<8;i++) //we store 8 frequency domains acros the whole 64 stpectrum
{ {
for(i2=1;i2<=4;i2++) for(i2=1;i2<=4;i2++)
{ {
sample[i] = ((sample[i] + sample[i*8+i2])/2); sample[i] = ((sample[i] + sample[i*8+i2])/2);//average each 4 following spectrums, write results to sample[0..7]
} }
//avg written to sample[0..7]
if(sample[i]<20) if(sample[i]<20)
{ {
led_bar1[i].r=(char)sample[i]*fac_r; led_bar1[i].r=(char)sample[i]*fac_r;
@ -145,7 +158,7 @@ int main (void)
} }
} }
ws2812_setleds(led_bar1,8); ws2812_setleds(led_bar1,8);
while(ticks<60){ asm("");}//workaround for stoping gcc optimizing while(ticks_sample<60){asm("");}//workaround for stoping gcc optimizing
} }
return 0; return 0;
} }
@ -169,11 +182,3 @@ void setupTimer(void)
* 255/0.017204*0.001=15 counts = 1ms * 255/0.017204*0.001=15 counts = 1ms
* 256 gives 1ms * 256 gives 1ms
*/ */
void wait_period(void)
{
// TIFR |=(1<<TOV1); //clear overflow flag
}