fft_led/light_ws2812_AVR/Examples/Rainbow.c
2024-02-27 12:42:35 +01:00

85 lines
1.9 KiB
C

/*
*
* This example is configured for a Atmega32 at 16MHz
*/
#include <util/delay.h>
#include <avr/io.h>
#include <avr/interrupt.h>
#include "light_ws2812.h"
#define MAXPIX 30
#define COLORLENGTH (MAXPIX/2)
#define FADE (256/COLORLENGTH)
struct cRGB colors[8];
struct cRGB led[MAXPIX];
int main(void)
{
uint8_t j = 1;
uint8_t k = 1;
DDRB|=_BV(ws2812_pin);
uint8_t i;
for(i=MAXPIX; i>0; i--)
{
led[i-1].r=0;led[i-1].g=0;led[i-1].b=0;
}
//Rainbowcolors
colors[0].r=150; colors[0].g=150; colors[0].b=150;
colors[1].r=255; colors[1].g=000; colors[1].b=000;//red
colors[2].r=255; colors[2].g=100; colors[2].b=000;//orange
colors[3].r=100; colors[3].g=255; colors[3].b=000;//yellow
colors[4].r=000; colors[4].g=255; colors[4].b=000;//green
colors[5].r=000; colors[5].g=100; colors[5].b=255;//light blue (türkis)
colors[6].r=000; colors[6].g=000; colors[6].b=255;//blue
colors[7].r=100; colors[7].g=000; colors[7].b=255;//violet
while(1)
{
//shift all vallues by one led
uint8_t i=0;
for(i=MAXPIX; i>1; i--)
led[i-1]=led[i-2];
//change colour when colourlength is reached
if(k>COLORLENGTH)
{
j++;
if(j>7)
{
j=0;
}
k=0;
}
k++;
//loop colouers
//fade red
if(led[0].r<(colors[j].r-FADE))
led[0].r+=FADE;
if(led[0].r>(colors[j].r+FADE))
led[0].r-=FADE;
if(led[0].g<(colors[j].g-FADE))
led[0].g+=FADE;
if(led[0].g>(colors[j].g+FADE))
led[0].g-=FADE;
if(led[0].b<(colors[j].b-FADE))
led[0].b+=FADE;
if(led[0].b>(colors[j].b+FADE))
led[0].b-=FADE;
_delay_ms(10);
ws2812_sendarray((uint8_t *)led,MAXPIX*3);
}
}