I am using Simulink to simualte turning on/off leds on a hardware board. I am using the TCP/IP block provided by instrument control toolbox to communicate data between the Simulink block and the board. So my Simulink model is the client. I want to generate C code of the model but the generated code doesn't include the TCP/IP block. Do you guys have any ideas why I got this problem? Do you know how can I implement my own TCP/IP block that might be generated to c code? Thanks for helping
I assume the rtw file is created in your case and you are using Simulink Coder or Real Time Workshop.
To create C-Code from specific block (as your TCP/IP-Block) you need a block specific tlc-File.
TLC = Target Language Compiler
Taken from TLC documentation: http://www.mathworks.com/help/pdf_doc/rtw/rtw_tlc.pdf
Real-Time Workshop invokes the TLC after a Simulink model is compiled
into an intermediate form (model.rtw) that is suitable for generating
code. To generate code apropriately, the TLC uses its library of
functions to transform
two classes of target files:
•System target files
•Block target files
I guess the block target file of the Tcp/Ip - Block is missing.
If you don't have it or get you have to implement the tcp/ip functionality in TLC.
(Please bear with me, I do not have privileges to add comments, yet)
Related
We are working with a tool that generates C-code. For example, the C-code could be for the logic: "if a sensor is activated, turn on the LED bulb". The code can be saved into a function that can be called from outside. What is the best way to embed this kind of external C-code into the rest of the Modelica model? How can we compile this code along with the rest of the .mo files preferably using OM Shell script and omc?
You can directly put C code in external functions or link with a library.
See:
https://specification.modelica.org/v3.4/Ch12.html#external-function-interface
https://specification.modelica.org/v3.4/Ch12.html#external-objects
As examples see some of our tests from the testsuite:
https://github.com/OpenModelica/OpenModelica/blob/master/testsuite/simulation/modelica/
Simple example:
https://github.com/OpenModelica/OpenModelica/blob/master/testsuite/simulation/modelica/external_functions/ExternalLibraries.mo
https://github.com/OpenModelica/OpenModelica/blob/master/testsuite/simulation/modelica/external_functions/ExternalLibraries.mos
https://github.com/OpenModelica/OpenModelica/blob/master/testsuite/simulation/modelica/external_functions/ExternalFunc1.c
https://github.com/OpenModelica/OpenModelica/blob/master/testsuite/simulation/modelica/external_functions/ExternalFunc2.c
Some advanced libraries:
https://github.com/modelica-3rdparty/Modelica_DeviceDrivers
https://github.com/modelica-3rdparty/ExternData
I would like to import an existing C code (or any other text) into my generated code by Matlab simulink.I have some tasks that made in C,but in the future i want to develop in matlab.I work in simulink,and I can compile the models,but I want to use some special function what I previously wrote in C (because of pointer etc.).
The problem is that I don't know how to put in these texts into the model,and after the code generation these texts stay in the original format,and placed in the expected line.
And what I would like:
You can achieve this using the S-Function Builder. It allows one to create C code blocks, which get compiled with the model run. If using Code Generator, it gets inserted into generated code.
I generally use it to call functions from my external code or libraries, as in some Raspberry Pi Driver blocks I created.
It generates .c, .h and .mex files for each block and is quite clunky but does work!
BTW: If it's just to use an external pointer, you can happily use ImportedPointer/ExportedPointer for this. I find this handy for variables between generated code and container.
I know that it is possible to create S-function from C code that I provide.
But is it possible to create one S-function from C Code, which is generated from a Simulink Model for dSPACE ECUs, with low effort. The reason is, I am trying to test the dspace code with matlab/simulink.
Furthermore I'm aksing because the generated code from this simulink model consists multiple .c and .h files and I don't know how to integrate these files in one s-function block.
There are several methods of doing this. I suggest using the Legacy Code Tool as its structure helps to guide you through the process. You could also explore calling the function(s) from Stateflow or a Matlab Function block depending on the application.
With respect to multiple c/h files. I assume they will all need to be visible to Matlab through pointing to the source paths, but you should be able to identify the 'entry' function that you're interested in and utilize that in your model.
I have been trying to find out how to deploy a Simulink model. There are possibilities and problems as well.
If I use Simulink Coder how can I find the generated code on my computer? Where is it saved as a file or package of files?
Can we deploy Simulink as .NET Assembly? If we can, where can I find a detailed documentation about it.
Is there any other way to use my Simulink model standalone?
Thank you for any effort.
By default all the code gets placed into a folder, in the current directory, called ModelName_CodeTarget, where ModelName is the name of your model and CodeTarget is the particular type of code you are generating. (This folder is created during the build process if it doesn't already exist.)
There is no mechanism for automatically generating a .Net assembly. Simulink Coder generates C code; what you do with it is then up to you (just as it would be with hand written code). Note that the process is fully customizable, so you could create your own build process to autmatically wrap the C code into an assembly (but it would be a very advanced maneuvre to do this).
There are a couple of Simulink Coder "targets" that generate standalone executable files. For instance, the GRT (Generic Real-Time) target generates a simple .exe file; the RSIM target (the Rapid Simulation Target) generates an exe where you can specify different .mat files that can be used to specify different model parameters for different simulation runs, and have the results of the different runs stored to different output .mat files.
Most of these questions are answered by looking at the early chapters of the Simulink Coder documentation.
It would be worth you taking some time to look at it to get a feel for how the code generation process works.
I have a simple model from simulink and I would like to generate code using the code generator in the simulink and then compile it using gcc into a .ELF object file. How can I proceed?
Thanks
You need the product called Simulink Coder (around matlab 2011b) or Real-time Workshop (for older matlab versions). Typing ver at the matlab command window will show what products and licences you have installed.
If Simulink Coder or RTW are installed, you use the menu Simulation->Configuration Parameters to set up the model for code generation.
If you have Embedded Coder you can set System Target File to ert.tlc, and this will produce a very concise main() routine to call your model code. Otherwise, use grt.tlc which produces a lot more bloat then ert, but is the only useful one available for on Windows.
There are a lot of options to go through and check - it really needs someone with a bit of experience to be present!
As you are requesting an ELF file, is this for an embedded system? If so, there is a lot more work to be done. If the target is not one of the already supported targets, then you need a target package, which will take either a lot of time and experience, or money to buy one.
Custom target development - a world of it's own:
http://www.mathworks.co.uk/help/toolbox/rtw/ug/bse3b2z.html