Hardware or FPGA
is a primary requirement for any real time implementation of mathematical
algorithms. The main drawback of the process is the limited resources and the
interfaces available on the FPGA for the co-simulation process. One of the main
highlighted concern is the mapping of the peripheral ports on the FPGA with the
algorithm.
Co-simulation is
the best process to use for the real time implementation of the algorithms because
the process facilitates the features of the two tools simultaneously. MATLAB is
known as the best tool for the implementation of the mathematical algorithms
for a number of applications. The other tool System Generator from by the
Xilinx is known best for the hardware implementation of the algorithms.
Both the tools
work together simultaneously to real time implementation of the mathematical
algorithms on the FPGAs. The complications are their when you want to use the LEDs,
Buttons or other output devices. To resolve these problems we manually create
the Non Memory Mapped Ports according to the steps given below.
To manually
create NMM we need these different Simulink and system generator block sets.
1.In1
2.Convert
3.Gateway In
4.Out1
5.Terminator
To generate the
library subsystem we have to put these block as in the given fig:1
Fig:
1
The work is
almost done we just need to run the given three command on the MATLAB command
window after selecting the “Gateway Out” block
>>xlSetNonMemMap(gcbh,
'Xilinx', 'ethernetcosim');
>>xlSetPortParams(gcbh,
'IOConstraint', 'NET "pmod0" LOC = U18;');
This command is to map output of the design to the LED of the
FPGA . “U18” is the pin location of the LED<0> in our case and can be
changed on the basis of different pin location of the FPGAs.
>>dump(xlGetPortParams(gcbh));
This command is to confirm the pin mapping.
To use these
blocks, right click after selecting all the blocks and make subsystem of them
and put the subsystem wherever you want to use with any Simulink model.
