writePort

Write data to a DUT port from MATLAB

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Syntax

writePort(hFPGA, portName, data)

Description

example

writePort(hFPGA, portName, data) casts the input data, specified by data, to the data type of the port, portName, and dispatches to the interface mapped to that port to write the data. Before you write the data, set up a connection from MATLAB® to the target FPGA or SoC device, hFPGA, and then use the mapPort function to map the portName to that interface.

Examples

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This example shows how to write data to the DUT ports that are mapped to AXI4 slave interfaces.

Create an fpga object with Xilinx as Vendor.

hFPGA = fpga("Xilinx")
hFPGA = 

  fpga with properties:

   Top-Level Properties

       Vendor: "Xilinx"
   Interfaces: [0x0 fpgaio.interface.InterfaceBase]

Add the AXI4 slave interface to the hFPGA object by using the addAXI4SlaveInterface function.

%% AXI4 Slave
addAXI4SlaveInterface(hFPGA, ...
	"InterfaceID", "AXI4-Lite", ...
	"BaseAddress", 0xA0000000, ...
	"AddressRange", 0x10000);

Specify the DUT ports in the HDL IP core as an hdlcoder.DUTPort object array and then map the port to the AXI4 slave interface.

hPort_h_in1 = hdlcoder.DUTPort("h_in1", ...
	"Direction", "IN", ...
	"DataType", numerictype(1,16,10), ...
	"Dimension", [1 1], ...
	"IOInterface", "AXI4-Lite", ...
	"IOInterfaceMapping", "0x100");

Map the DUT port objects to the AXI4 slave interface and then write data by using the writePort function.

mapPort(hFPGA, hPort_h_in1);

writePort(hFPGA, "h_in1", 5);

This example shows how to write data to the DUT ports that are mapped to AXI4-Stream interfaces.

Create an object for the target device.

hFPGA = fpga("Xilinx")
hFPGA = 

  fpga with properties:

       Vendor: "Xilinx"
   Interfaces: [0x0 fpgaio.interface.InterfaceBase]

Add the AXI4-Stream interface to the hFPGA object by using the addAXI4StreamInterface function.

%% AXI4-Stream
addAXI4StreamInterface(hFPGA, ...
	"InterfaceID", "AXI4-Stream", ...
	"WriteEnable", true, ...
      "ReadEnable", true, ...
	"WriteFrameLength", 1024, ...
	"ReadFrameLength", 1024);

Specify the DUT port as an hdlcoder.DUTPort object array and then map the port to the AXI4-Stream interface.

hPort = hdlcoder.DUTPort("x_in", ...
	"Direction", "IN", ...
	"DataType", numerictype(1,16,10), ...
	"Dimension", [1 1], ...
	"IOInterface", "AXI4-Stream");

Map the DUT port objects to the AXI4-Stream interface and then write data by using the writePort function.

mapPort(hFPGA, hPort);

writePort(hFPGA, "x_in", sin(linspace(0, 2*pi, 1024)));

Input Arguments

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fpga object for the target vendor, specified as an fpga object.

DUT port name, specified as a string. You create the DUT port as an hdlcoder.DUTPort object array. Before you specify the portName, you must have mapped the port to an AXI interface by using the mapPort function.

Input data to write to the DUT port, PortName, specified as a scalar or a vector.

See Also

Objects

Functions

Topics

Introduced in R2020b

HDL Coder Documentation

Support