Update

esp32c3-dev-board/firmware/esp32c3-blink/src/main.cpp

@@ -0,0 +1,32 @@
+#include <Arduino.h>
+#include <Adafruit_NeoPixel.h>
+#include <Ticker.h>
+
+#define PIN_LED 8
+#define LED_COUNT 1
+
+Adafruit_NeoPixel pixels(LED_COUNT, PIN_LED, NEO_GRB + NEO_KHZ800);
+Ticker tOn, tOff;
+
+
+void setup()
+{
+  Serial.begin(SERIAL_BAUD);
+  Serial.println(F("Hello,"));
+  Serial.println(F("I'm"));
+  Serial.println(F("ESP32-C3!"));
+
+  tOn.attach_ms(500, [](){
+    pixels.setPixelColor(0, pixels.Color(0, 150, 0));
+    pixels.show();
+  });
+  delay(250);
+  tOff.attach_ms(500, [](){
+    pixels.setPixelColor(0, pixels.Color(0, 0, 0));
+    pixels.show();    
+  
+    Serial.printf("[%ld] %#08lx\n", millis(), random());
+  });
+}
+
+void loop(){}