VHDL coding: June 2016

FPGA programming using System Generator
(LED Blinking)

For programming the FPGA using system generator we required two software

1.MATLAB

2.Xilinx

step 1: Install both softwares

step 2: configured MATLAB for system generator

Step 3: after successful configuration, open MATLAB software,open simulink and you can see xilinx . blockset get added in simulink library.

Now you are ready for programming

create new model file, file-new-model

from xilinx blockset select and drag blocks from library to simulink program file and wired them all.

double click on system generator block,

          system generator block converts simulink model into HDL codes
          compilation: folder name "netlist" get created in project folder and stores converted hdl files
          part: select the target FPGA device
         check "create testbench", so that testbench file get generate. we can use this file to verify correctness   of generated HDL code.

              Clocking:

              FPGA clock period: set it according to target FPGA board. my board support 100MHz.      .             frequency so time period becomes 10 ns
              Clock pin Location: FPGA pin where 100MHZ frequency get generated (varies from board to     .             board)

double click on counter block, select number of bits.

double click slice block, this block is useful for selecting a particular bit/pin number. since the output of counter is 4 bit and I want to work on only MSB bit I made following selections.

(more number of counter bit = lesser the frequency on MSB bit)
for more clarification refer the clock divider circuit on my blog page. so if you want delay of 1 . second, make number of bits equals to 27 in counter block.