I have been working on LED strip project in arduino and wanted to light up addressable LEDs using Ardunio <FastLED.h> libaray. I decided to use the same set of codes to access two LED strips connected to two different digital pins on the arduino mega controller. see arduino code below.
#include <FastLED.h>
#include <string.h>
CRGB leds1[5];
CRGB leds2[5];
void setup() {
FastLED.addLeds<WS2812, 4, GRB>(leds1, 5);
FastLED.addLeds<WS2812, 5, GRB>(leds2, 10);
FastLED.setMaxPowerInVoltsAndMilliamps(5, 500);
FastLED.clear();
FastLED.show();
}
void loop() {
num1();
}
void num1(){
a(255); // single strip
}
void a(int value ){
int red = value;
int green =0;
int blue =0;
leds1[0]=CRGB(red, green, blue);
leds1[1]=CRGB(red, green, blue);
leds1[2]=CRGB(red, green, blue);
leds1[3]=CRGB(red, green, blue);
leds1[4]=CRGB(red, green, blue);
FastLED.setBrightness(20);
FastLED.show();
}
I want to use the function void a to access the leds in the array leds2 .
how to change the leds1 to leds2 using a variable passes as a parameter to the function void a ??
I tried below , no syntax errors but cannot light up the LEDs.
#include <FastLED.h>
#include <string.h>
CRGB leds1[5];
CRGB leds2[5];
void setup() {
FastLED.addLeds<WS2812, 4, GRB>(leds1, 5);
FastLED.addLeds<WS2812, 5, GRB>(leds2, 10);
FastLED.setMaxPowerInVoltsAndMilliamps(5, 500);
FastLED.clear();
FastLED.show();
}
void loop() {
num1('1');
num1('2');
}
void num1(char suffix){
a(255,suffix);
}
void a(int value , char suffix){
int red = value;
int green =0;
int blue =0;
char lednum[6] ;
lednum[0]='l';
lednum[1]='e';
lednum[2]='d';
lednum[3]='s';
lednum[4]=suffix;
lednum[5]=0;
CRGB led= lednum;
led[0]=CRGB(red, green, blue);
led[1]=CRGB(red, green, blue);
led[2]=CRGB(red, green, blue);
led[3]=CRGB(red, green, blue);
led[4]=CRGB(red, green, blue);
FastLED.setBrightness(20);
FastLED.show();
}
>Solution :
heres a starting hint
void a(int value , CRGB *leds) {
...
}
then you can do
a(255, leds1);
or
a(128, leds2);