Example of a Device Driver integrated in Simulink using a Custom block

Hi,

Can someone point to any example/sample code demonstrating integration of a board specific device driver code ( for example read data from a serial bus like CAN/SPI, or even simpler read data from ADC etc.. ) into SIMULINK with a custom block.

Which is a better choice for such a requirement , S-Function block or a C Function block?

I want to possibly simulate and also generate the glue code to integrate with the low level driver with the embedded coder.

Thanks in advance

AAA

Answer 1

[akshatsood]

Dear @Archit,

I understand that you are looking for guidance on integrating board-specific device driver code into Simulink using a custom block. You mentioned tasks such as reading data from interfaces like CAN, SPI, or ADC, and you are considering whether to use an S-Function block or a C Function block for this purpose.

S-Function Block: provides extensive flexibility for integrating complex device drivers and managing detailed hardware interactions. Also, supports both simulation and automatic code generation.

C Function Block: simplifies the integration process for less complex tasks, enabling direct incorporation of C code into models. Ideal for rapid prototyping and simple hardware interactions.

Recommendation

• For Complex Integrations: S-Function blocks are preferable if you need comprehensive control over hardware interactions and plan to generate production code with Embedded Coder.
• For Simpler Tasks: C Function blocks are suitable for simpler integrations or when you are prototyping.

https://www.mathworks.com/help/simulink/slref/custom-code-and-hand-coded-blocks-using-the-s-function-api.html

I hope this helps.

[Archit]

Hi Akshat,

Thanks a lot for the quick and clear answer.it clarifies my query.

Can you point to some example demonstrating this type of custom block integration?

Also, can i try out such an example on the Online version of Matlab? I understand that i won't be able to try out the device driver interfacing in the online version, but any example showing the process to create a custom block and integrate into an existing model and integrate some dummy C code will help.

thanks again!

Regards,

AAA

[akshatsood]

Dear @Archit

Please refer this: https://www.mathworks.com/matlabcentral/fileexchange/39354-device-drivers