Set ports properties from Level2-M-File

Hallo,

I'm looking on how to write a Level 2 M-File for a simulink block. both inputs port get frame data. In fact i've got two Imput ports and three Outputs. When i set Imput ports Mode to 'Inherited', and then register the SetInputPortSamplingMode methode, the program generate error like "too many ouputs ports" two of output ports deliver frame sample. How can i fix that?? Do the SetInputPortSamplingMode has to define output ports sampling mode as well? My SetInputPortSamplingMode methode look as follow:

function setInPortSamMode (block)
block.InputPort(1).SamplingMode = 'frame';
block.InputPort(2).SamplingMode = 'frame';
block.OutputPort(1).SamplingMode = 'frame';
block.OutputPort(2).SamplingMode = 'frame';

thanks for helping me!

Bolivar

Answer 1

[Kaustubha Govind]

Yes, you do have to specify the output port sampling modes as well. Also, your setInPortSamMode doesn't have the correct prototype. According to the documentation, you need:

function setInPortSamMode(block, idx, fd)

[Davide Vertuani]

The link to the documentation page is broken.

More detailed / extensive documentation about this argument (or generally any documentation about S-functions) would be more than welcome. One is faced with errors during development and has no documentation other than Q&As here and in StackOverflow to rely on.