fix different bug, not zeroing rgb, not manipulating over each datapoint

This commit is contained in:
Jonathan Wyss 2024-02-29 21:32:26 +01:00
parent b710fed79b
commit 4b46c16539
3 changed files with 73 additions and 34 deletions

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@ -37,16 +37,17 @@ void setupADC(void)
//_BC(REFS1) | //Set_Vref
//_BC(MUX3) | //
//_BC(MUX2) | //
_BS(MUX1) | //
// _BS(MUX1) | //
_BS(MUX0) | //PORT Select PB3
_BS(ADLAR) ; //left shift conversion results(used in 8bit mode)
_BS(ADLAR); //left shift conversion results(used in 8bit mode)
// ADCSRB = _BS(
ADCSRA = _BS(ADEN) | //Enable ADC
//_BC(ADATE) | //Disable AutoTrigger aka Freerunning mode
_BS(ADPS2) | //Select Prescaler clk/32
//_BC(ADPS1) |
_BS(ADPS0);
// _BS(ADPS1) | //Select Prescaler
_BS(ADPS0) | //prescaler 128
//_BS(ADPS1) |
_BS(ADPS2);
ADCSRA &= ~(1<<ADATE);
}

90
main.c
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@ -1,4 +1,3 @@
#define F_CPU 16000000UL
#include<util/delay.h>
#include<avr/io.h>
@ -6,11 +5,12 @@
#include"avr_adc.h"
#include"light_ws2812_AVR/Light_WS2812/ws2812_config.h"
#include"light_ws2812_AVR/Light_WS2812/light_ws2812.h"
#include"main.h"
#define STARTADC ADCSRA |= (1<<ADSC)
#define PB_mic PB0
#define NOISE 100
#define SCALE_FACTOR 8
//resolution fft calc:
//https://3roam.com/fft-resolution-bandwidth-calculator/
//128 samples , 1kSPS = 7.8Hz
@ -29,63 +29,101 @@
//6- 755
//7- 880
//8- 1kHz
//
const float log_scale = 64./log(64./SCALE_FACTOR + 1.);
int main (void)
{
int i,i2;
int colorb;
int colora;
int avg;
char sample[128];
char im[128];
int sum,avg;
char sample[64];
char im[64];
char buff[64];
char temp;
struct cRGB led_bar1[8];
//DDRB = (1<<mic);//would be setting output, default is input so no need for setting
setupADC();
OSCCAL = 250;//overclock!!! to 30MHz
for(i=0;i<8;i++)
{
led_bar1[i].r=0;
led_bar1[i].g=0;
led_bar1[i].b=0;
}
for(i=0;i<64;i++)
{
buff[i]=0;
}
while(1)
{
//######RECORD SAMPLES#######
for(i=0;i<128;i++)
//######RECORD SAMPLES######
sum = 0;
for(i=0;i<64;i++)
{
STARTADC;
sample[i] = (ADCH-128)*2; //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
im[i]=0; //pseudo data for funciton
//
sum+=sample[i];//dc-bias
}
fix_fft(sample,im,7,0);//im[i] is always zero
avg = sum/64;//calculate bias
for(i=0;i<64;i++)
{
sample[i]-=avg;//remove bias
}
fix_fftr(sample,6,0);//im[i] is always zero
//####Averaging Data####
//
for(i2=0;i2<128;i2++)
{
sample[i2] = sqrt(sample[i2] * sample[i2] + im[i2]* im[i2]);
}
for(i=0;i<64;i++)
{
sample[i] = sample[i] *SCALE_FACTOR;
sample[i] = (sample[i]*0.6 + buff[i]*0.5);
buff[i] = sample[i];
if(sample[i]<0) sample[i] = 0;
}
for(i=0;i<8;i++)
{
for(i2=1;i2<=16;i2++)
for(i2=1;i2<=8;i2++)
{
sample[i] = (sample[i] + sample[i*16+i2])/2;
sample[i] = ((sample[i] + sample[i*8+i2])/2);
}
//avg written to sample[0..7]
//contains values scaled to int boundarys
//scale them to 0..256
sample[i]= map(sample[i],0,30,0,255);
led_bar1[i].r=0;;led_bar1[i].b=0;
//if(sample[i]<2) sample[i]=2;
led_bar1[i].g=sample[i];
//sample[i]= map(sample[i],0,50,0,255);
if(sample[i]<30)
{
led_bar1[i].r=0;
led_bar1[i].g=0;
led_bar1[i].b=sample[i];
}
else if(sample[i]<50)
{
led_bar1[i].r=0;
led_bar1[i].g=sample[i];
led_bar1[i].b=0;
}
else if(sample[i]<100)
{
led_bar1[i].r=sample[i];
led_bar1[i].g=0;
led_bar1[i].b=0;
}
}
ws2812_setleds((uint8_t *)led_bar1,8);
ws2812_setleds(led_bar1,8);
}
// _delay_ms(50);

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@ -28,7 +28,7 @@ DEBUG = stabs
CSTANDARD = -std=gnu99
# Place -D or -U options here
CDEFS = -DF_CPU=16000000UL
CDEFS = -DF_CPU=30000000UL
# Place -I options here
CINCS =