first commit

libraries/FastLED/examples/Apa102HDOverride/Apa102HDOverride.ino

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+/// @file    Apa102HD.ino
+/// @brief   Example showing how to use the APA102HD gamma correction with user override.
+
+#define FASTLED_FIVE_BIT_HD_BITSHIFT_FUNCTION_OVERRIDE
+
+#include <Arduino.h>
+#include <FastLED.h>
+#include <lib8tion.h>
+
+#define NUM_LEDS 20
+// uint8_t DATA_PIN, uint8_t CLOCK_PIN,
+
+#define STRIP_0_DATA_PIN 1
+#define STRIP_0_CLOCK_PIN 2
+#define STRIP_1_DATA_PIN 3
+#define STRIP_1_CLOCK_PIN 4
+
+void fl::five_bit_hd_gamma_bitshift(CRGB colors,
+                                    CRGB scale,
+                                    uint8_t global_brightness,
+                                    CRGB* out_colors,
+                                    uint8_t *out_power_5bit) {
+    // all 0 values for output
+    *out_colors = CRGB(0, 0, 0);
+    *out_power_5bit = 0;
+    Serial.println("Override function called");
+}
+
+CRGB leds_hd[NUM_LEDS] = {0}; // HD mode implies gamma.
+
+
+void setup() {
+    delay(500); // power-up safety delay
+    // Two strips of LEDs, one in HD mode, one in software gamma mode.
+    FastLED.addLeds<APA102HD, STRIP_0_DATA_PIN, STRIP_0_CLOCK_PIN, RGB>(
+        leds_hd, NUM_LEDS);
+}
+
+void loop() {
+    // Draw a a linear ramp of brightnesses to showcase the difference between
+    // the HD and non-HD mode.
+    for (int i = 0; i < NUM_LEDS; i++) {
+        uint8_t brightness = map(i, 0, NUM_LEDS - 1, 0, 255);
+        CRGB c(brightness, brightness,
+               brightness); // Just make a shade of white.
+        leds_hd[i] = c;     // The APA102HD leds do their own gamma correction.
+    }
+    FastLED.show(); // All leds are now written out.
+    delay(8);       // Wait 8 milliseconds until the next frame.
+}