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VHDL on Fomu

Hint

Component declarations for instantiating hard cores (such as the ones in hdl/sb_ice40_components.vhd) are found in the installation of iCEcube2.

“Hello world!” - Blink a LED

The canonical “Hello, world!” of hardware is to blink a LED. The directory hdl/vhdl/blink contains a VHDL example of a blink project. This takes the 48 MHz clock and divides it down by a large number so you get an on/off pattern.

Enter the hdl/vhdl/blink directory and build the demo by using make:

Make sure you set the FOMU_REV value to match your hardware! See Required Hardware.

make FOMU_REV=$FOMU_REV

You can then load blink.dfu onto Fomu by using make load or the same dfu-util -D command we’ve been using so far. You should see a blinking pattern of varying color on your Fomu, indicating your bitstream was successfully loaded.

Table Of Contents

• VHDL on Fomu
  • “Hello world!” - Blink a LED

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