imported from "final" folder

.pio/libdeps/esp01_1m/FastLED/examples/EspI2SDemo/EspI2SDemo.h

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+// Simple test for the I2S on the ESP32dev board.
+// IMPORTANT:
+//   This is using examples is built on esp-idf 4.x. This existed prior to Arduino Core 3.0.0.
+//   To use this example, you MUST downgrade to Arduino Core < 3.0.0
+//   or it won't work on Arduino.
+
+#ifdef ESP32
+
+
+
+#define FASTLED_ESP32_I2S
+#include <FastLED.h>
+
+// How many leds in your strip?
+#define NUM_LEDS 1
+
+// For led chips like WS2812, which have a data line, ground, and power, you just
+// need to define DATA_PIN.  For led chipsets that are SPI based (four wires - data, clock,
+// ground, and power), like the LPD8806 define both DATA_PIN and CLOCK_PIN
+// Clock pin only needed for SPI based chipsets when not using hardware SPI
+#define DATA_PIN 3
+
+// Define the array of leds
+CRGB leds[NUM_LEDS];
+
+void setup() { 
+    // Uncomment/edit one of the following lines for your leds arrangement.
+    // ## Clockless types ##
+    FastLED.addLeds<NEOPIXEL, DATA_PIN>(leds, NUM_LEDS);  // GRB ordering is assumed
+}
+
+void loop() { 
+  // Turn the LED on, then pause
+  leds[0] = CRGB::Red;
+  FastLED.show();
+  delay(500);
+  // Now turn the LED off, then pause
+  leds[0] = CRGB::Black;
+  FastLED.show();
+  delay(500);
+
+  // This is a no-op but tests that we have access to gCntBuffer, part of the
+  // i2s api. You can delete this in your own sketch. It's only here for testing
+  // purposes.
+  if (false) {
+    int value = gCntBuffer;
+    value++;
+  }
+}
+
+#else  // ESP32
+
+// Non-ESP32 platform - provide minimal example for compilation testing
+#include <FastLED.h>
+
+#define NUM_LEDS 1
+#define DATA_PIN 3
+
+CRGB leds[NUM_LEDS];
+
+void setup() { 
+    FastLED.addLeds<NEOPIXEL, DATA_PIN>(leds, NUM_LEDS);
+}
+
+void loop() { 
+    leds[0] = CRGB::Red;
+    FastLED.show();
+    delay(500);
+    leds[0] = CRGB::Black;
+    FastLED.show();
+    delay(500);
+}
+
+#endif  // ESP32