Lattice Semiconductor iCE40 UltraLite User Manual page 10

4. After the iCE40 UltraLite device has initialized and the RGB LED is illuminated RED, change the J15 jumper
positions to vertical, shorting pins 1-2 and 3-4. This is required to allow the USB port to communicate with the
iCE40 UltraLite device.
Figure 8. iCE Selection (Vertical) for J15
5. Start the RGB GUI on the PC or MAC.
Figure 9. iCE40 UltraLite LED Demonstration Interface
Now you can control the RGB LED on the iCE40 UltraLite Breakout Board. You can set the color, brightness, blink-
ing rate as well as breathing.
iCE40 UltraLite Breakout Board
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