UDP Receive

Receive UDP packets from UDP host

Since R2020b

• 

Libraries:
NVIDIA Jetson and NVIDIA DRIVE / Network

Description

The UDP Receive block receives UDP packets from a UDP host. Use the block for stateless and connectionless data exchange.

With each sample, the block outputs the contents of a UDP packet as a data vector of the size specified in the Data size (N) parameter.

The data type of the block output, Data, depends on the Data type parameter. The data type of the block output, Size, is uint16.

Note

Your antivirus software or firewall might block UDP traffic. Configure the software to allow traffic from a specific IP port number.

Examples

Send and Receive Data over UDP on NVIDIA Jetson Platforms

Use MATLAB® Coder™ Support Package for NVIDIA® Jetson® and NVIDIA DRIVE® to send and receive UDP data over the network on a Jetson board.

Open Script

Ports

Output

Data — UDP packets received from sending UDP host

vector (default)

At each sample time, the port outputs the contents of a packet received as a data vector of the size that you specify in the Data size (N) parameter.

Data Types: single | double | int8 | int16 | int32 | uint8 | uint16 | uint32 | Boolean

Size — Determine if requested data is received at given time step

scalar (default)

The port outputs 0 if the data is received at a given time step. Otherwise, it outputs a nonzero value indicating that no new data is available.

Data Types: uint8

Parameters

Local IP port — IP port on NVIDIA^® Jetson™ board to receive data

25000 | positive integer in the range [1,65535]

Specify the port number of the application from which you want to receive the packets. Match the local port number with the remote port number of the sending host.

Programmatic Use

Block Parameter: localPort

Type: character vector

Values: '25000'|scalar

Default: '25000'

Data type — Data type of elements in UDP packets

uint8 (default) | boolean | uint16 | uint32 | int8 | int16 | int32 | single | double

Select the data type of the elements in the UDP packets received by the block. The size of each element depends on its data type.

Programmatic Use

Block Parameter: signalDatatype

Type: character vector

Values: 'uint8'|'uint16''uint32''double''single''int8''int16''int32''boolean'

Default: 'uint8'

Data size — Number of data elements in each UDP packet

255 (default)

Specify the number of elements that you want to receive in each packet.

Programmatic Use

Block Parameter: dims

Type: character vector

Values: '255'|scalar

Default: '255'

Sample time (seconds) — Time frequency at which block receives data

0.1 (default) | scalar | vector

Specify how often the block should read the port buffer. Enter a value greater than 0 or -1 (for inherited sample time).

When you specify this parameter as-1, Simulink^® determines the best sample time for the block based on the block context within the model.

This value defaults to a sample time of 0.1 seconds. Smaller values require the processor to complete the same number of instructions in less time and this can cause task overruns.

Programmatic Use

Block Parameter: sampletime

Type: character vector

Values: scalar | vector

Default: '0.1'

Extended Capabilities

C/C++ Code Generation
Generate C and C++ code using Simulink® Coder™.

Version History

Introduced in R2020b