// Type aliases
using RGBPins_t = uint8_t[3];
using RGBValues_t = RGBPins_t;

// Global constant(s)
namespace gc {
constexpr RGBPins_t RGBPins {A0, A1, A2};
}   // namespace gc

// Functions

// RGB analog
void lightLedUp(const RGBPins_t& Pins, const RGBValues_t& Colour) {
  for (size_t I {0}; I < sizeof(RGBPins_t); ++I) { analogWrite(Pins[I], Colour[I]); }
}

// RGB digital
void lightLedUp(const RGBPins_t& Pins, uint8_t Value) {
  for (size_t Shift {0}; Shift < sizeof(RGBPins_t); ++Shift) { digitalWrite(Pins[Shift], Value & (1 << Shift)); }
}

// Main
void setup() {
  for (const auto& Pin : gc::RGBPins) { pinMode(Pin, OUTPUT); }
  randomSeed(A5);
}

void loop() {
  RGBValues_t RGBValues {static_cast<uint8_t>(random(256)), static_cast<uint8_t>(random(256)),
                         static_cast<uint8_t>(random(256))};
  lightLedUp(gc::RGBPins, RGBValues);
  delay(1000);
  // lightLedUp(gc::RGBPins, static_cast<uint8_t>(random(8)));
  // delay(1000);
}