Error when connecting output of SR Flipflop to Byte Pack of desktoptargetslib

I am trying to use Byte Pack block in Simulink to pack data for UDP Transmission. However, when the input of Byte Pack is the output Q of an SR Flipflop, I see below compile errors. Not sure how to solve this.

Error reported by S-function 'any2byte' in 'Signal_Interface/Byte Packing10/Byte Pack': backward propagation not supported

Component: Simulink | Category: Model error

Error in port widths or dimensions. 'Input Port 1' of 'Signal_Interface/Byte Packing10/Demux' is a one dimensional vector with 8 elements.

Component: Simulink | Category: Model error

[Piotr Kolodziej]

Have you resolved the issue? I have the same problem.

[Piotr Kolodziej]

Seems Reshape "solves" the issue.

Answer 1

[Narvik]

Hi,

As per my understanding, while trying to compile a Simulink model, you are receiving the following errors:

1. Backward propagation not supported
2. Error in port widths or dimensions

These errors occur when the signal attributes (data type, dimension, etc.) are backpropagated from the input port of the Byte Pack block to the source block. Refer to the following MATLAB answer for more information on the issues and resolution steps:

https://www.mathworks.com/matlabcentral/answers/1972374-bytepack-backward-propagation-not-supported?s_tid=ta_ans_results

Hope this helps!