46 lines
1.4 KiB
C++
46 lines
1.4 KiB
C++
// 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.
|
|
|
|
|
|
#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++;
|
|
}
|
|
}
|