Electric Imp Explorer Kit Sample Code: Hello World

helloworld.device.nut

// Import Electric Imp’s WS2812 library
#require "WS2812.class.nut:3.0.0"

// Set up global variables
spi <- null;
led <- null;
state <- false;

// Define the loop flash function
function flash() {
    state = !state;
    local color = state ? [0,0,255] : [0,0,0];
    led.set(0, color).draw();
    imp.wakeup(1.0, flash); 
}

// Set up the SPI bus the RGB LED connects to
spi = hardware.spiAHSR;
spi.configure(MSB_FIRST, 6000);

// Set up the RGB LED
led = WS2812(spi, 1);
hardware.pinH.configure(DIGITAL_OUT, 1);

// Start the flash loop
flash();

2017/6/7 10:00 update