Need help with FastLED feedback

[Kmanggaard]

Hi all,

My DAW sends button LED information like this: CC number for index and CC value for color.

Using the examples I can get feedback on note input, with the color determined by index.

How can I change the example code to listen for CC?

Also, can someone give an example of how to permute the LED index array?

[tttapa]

You can use CCRangeFastLED.

It has a setLEDIndexPermuter() method: You pass it a function that accepts an index (zero-based) and returns the permuted index, e.g.

uint8_t swap_led3_and_led7(uint8_t index) {
  if (index == 3)
    index = 7;
  else if (index == 7)
    index = 3;
  return index;
}

CCRangeFastLED<...> midileds {...};

void setup() {
  // ...
  midileds.setLEDIndexPermuter(swap_led3_and_led7);
}

[benwadub]

Hello @tttapa do you think this méthod could be used to show encoder value with ws218 led strip?
I know how to output midi date from Ableton with the script