Example 2: Creating a Bitstream Target

Example 2: Creating a Bitstream Target - 2022.1 English

Vitis Model Composer User Guide (UG1483)

Document ID

UG1483

Release Date

2022-05-26

Version

2022.1 English

Open a Model Composer design.
In the MATLAB command Window, modify the path as per your requirements, similar to the first example, and then enter the following command:
```
xilinx.environment.addCompilationTarget('Bitstream', '.')
```
This provides a template derived class for the users to edit. The last field corresponds to the directory which contains the board.xml file.
In the MATLAB Command Window, enter the following command:
```
xilinx.environment.rehashCompilationTarget
```
This will ensure that the new compilation target is picked up by the System Generator token
Close and then re-open the System Generator token.
You will now see the compilation target Bitstream on the System Generator token as shown below.
Open the Bitstream.m created in the './Bitstream/@Bitstream/Bitstream.m'.
Download the following two files:
Inside the function pre_project_creation(), add the following lines to do the following:
1. Set the board as a KC705 board.
2. Add a new top-level file (top.v) to use the differential clock ports of KC705.
3. Add a new XDC file to give the location constraints for the clock, dip, and led ports.
4. Set the newly added module top as the top.
5. Run synthesis.
6. Run implementation.
7. Generate bitstream.
After you save the files to a location on your computer, you should give the full path to the files in the add_file API as per your path.
```
add_tcl_command(obj, 'set_property board xilinx.com:kintex7:kc705:1.1 
[current_project]');
add_file(obj, 
'/group/dspusers-xsj/umangp/rel/2013.4/cust_comp_test/bitstream_example.xdc');
add_file(obj, '/group/dspusers-xsj/umangp/rel/2013.4/cust_comp_test/top.v');
obj.top_level_module = 'top';
run_synthesis(obj);
run_implementation(obj);
generate_bitstream(obj); 
```
In the MATLAB Command Window, enter the following command:
```
xilinx.environment.rehashCompilationTarget
```
This ensures that the new compilation target is picked up by the System Generator token
Close and then re-open the System Generator token.
Select the Bitstream compilation target.
Click the Generate button.
After the generation is complete, you can find the bit file in the following directory:
```
./<Target_directory>/Bitstream/bitstream_example.runs/impl_1/top.bit
```