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UDP Receive

Receive UDP message from UDP host

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Add-On Required: This feature requires the Simulink Support Package for Parrot Minidrones add-on.

  • UDP Receive block

Libraries:
Simulink Support Package for Parrot Minidrones

Description

The UDP Receive block receives UDP message from a UDP host.

The block output, Data, emits UDP packet data as a one-dimensional vector of a specified data type. The block output, Size, emits the size of the data in the UDP buffer. With each sample, the block outputs the bytes of a UDP message as a data vector of the size specified by 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. Size represents the total bytes. For example, if the Data Type is double and the number of elements (mentioned using the Data size (N) parameter) is 5, then the value of Size is 40, that is, 8*5 bytes.

The block receives the message on the port number specified in the Local IP port parameter. Match the port number specified in the Local IP port parameter with the remote port number of the sending host.

Parrot® minidrone is a little-endian device. The UDP Receive block expects the byte order of the received UDP data to be little-endian.

Note

If you are having trouble using UDP to communicate with a computer, the antivirus or firewall software might be blocking UDP traffic. If so, configure the software to allow the traffic for a specific IP port number.

Examples

Communicating with a Parrot Minidrone Using TCP/IP and UDP

Communicating with a Parrot Minidrone Using TCP/IP and UDP

Use the TCP/IP and UDP communication blocks in the Simulink® Support Package for Parrot® Minidrones. The blocks are used to control the motor speed of the drone and visualize the accelerometer sensor data from the drone.

Ports

Output

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At each sample time, the port outputs the data bytes of a message received as a data vector of the size specified by the Data size (N) parameter.

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

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

Data Types: uint16

Parameters

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

Note

Do not use ports 24099 and 26061 for UDP communication with Parrot minidrone as these ports are reserved.

Select the data type of the bytes to be received from the sending host.

Specify the number of data bytes that you want to receive in each message.

Enter the time interval at which to receive data.

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

Version History

Introduced in R2018a

See Also