UDP Receive

Receive UDP packets over IP network

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Libraries:
Raspberry Pi Blockset / Network

Description

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

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

Note

To generate code C/C++ code for this block, you must have an Embedded Coder^® license.

Examples

Control Status of LED on Raspberry Pi from Android Device

Control Raspberry Pi® LED from an Android® device.

• Open Model

Build Surveillance Camera Using Android and Raspberry Pi

Use Raspberry Pi® hardware and an Android® device to build a surveillance camera.

• Open Model

Control LEGO MINDSTORMS EV3 Robot Using Raspberry Pi Sense HAT

Read the Accelerometer on Raspberry Pi® Sense HAT and use this data to control the motion of a LEGO® MINDSTORMS® EV3 robot.

• Open Model

Ports

Output

Data — UDP packets received from sending UDP host

vector

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

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

Size — Number of data bytes in UDP message received

scalar

At each sample time, the block outputs the number of data bytes in the received message.

Data Types: uint8

Parameters

Local IP port — IP port number on receiving UDP port

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

Specify the port number of the application on which you want to receive the UDP message. Match the local port number with the remote port number of the sending host.

Data type — Data type of elements in UDP packet

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

Select the data type in which the block receives data bytes from the sending host.

Data size (elements) — Number of data elements in each UDP packet

255 (default) | scalar

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

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

0.01 (default) | scalar

Specify the frequency at which the scheduler calls the UDP Receive block, in seconds. Enter a value greater than zero. In real-time operation, setting this parameter to a smaller value reduces the likelihood of dropped UDP messages.

Extended Capabilities

C/C++ Code Generation

Generate C and C++ code using Simulink® Coder™.

To generate code C/C++ code for this block, you must have an Embedded Coder license. For more information on selecting the right product stack according to your development goals, see Product Stack for Raspberry Pi Blockset.

Version History

Introduced in R2013a