Xilinx, Fpga, Verilog, Pynq, Embedded Systems.
define which of these inputs are connected to any pins of the FPGA. We will do this by using “Constraint File” later in this tutorial. Note: BTN is a bus of width 4 which consist of BTN[0], BTN[1], BTN[2] and BTN[3] which as a bus is written as [3:0] BTN. Same goes for LD. STEP 4: Modify the LED