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.
I hope this helps.
