#include <ws2811/ws2811.h> 
#define GPIO_PIN    18
#define LED_COUNT   300
#define STRIP_TYPE  WS2812_STRIP
#define DMA         10

ws2811_t ledstring = {
.freq = WS2811_TARGET_FREQ,
.dmanum = DMA,
.channel = {
[0] = {
      .gpionum = GPIO_PIN,
      .count = LED_COUNT,
      .invert = 0,
      .brightness = 255,
      .strip_type = STRIP_TYPE,
},
[1] = {
      .gpionum = 0,
      .count = 0,
      .invert = 0,
      .brightness = 0,
    },
  },
};