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MATLAB (Simulink) Based UI Development for Low Level Drivers of Model Based Application | Automotive Tier-I Supplier

 

Customer:

An US Tier-1 supplier of automotive and industrial products.

 

Business Challenge:

  • Our customer was engaged in a model based development project.
  • The customer identified the need for the development of a configurable interface for managing the settings of Low Level Drivers (LLD), Application Model functionality testing and code generation.

 

Embitel Solution:

  • Our Automotive software team developed the required User Interface (UI) in MATLAB, Simulink using s-functions and GUIDE.
  • The S-Function Interface, supported by the UI, is a solution to manage configuration/settings of the low-level drivers.
  • These Low level device drivers (LLD) had been manually coded to support functions of various blocks of the Model Based Application layer.
  • For code generation and testing of LLD, various block modules had been designed like signal conversion modules (for example ADC) , electrical signal control modules (example, current and voltage) and more
  • Each block (within the mentioned module) was assigned multiple S-Functions. We also developed UI screens for each S-Function, to support configuration of LLD settings.
  • For an instance, the communication protocol block has different UI message IDs for different functions such as configuring baud rates, transmit/receive channel and more. When the user selects a message ID from the UI, the supported scripts call the relevant LLD function. The LLD function loads the data requested by the user for further processing.
  • These s-function blocks are used for simulation testing (MIL) and are further used for code file generation once the simulation is successful.

S Function Architecture
 
Embitel Impact:

  • The stability and performance of the whole system (LLD configuration with the model based application) improved due to simulation testing in virtual environment.
  • Our automotive software development team, followed software development best practice and automated the whole process of s-function generation, model creation and code generation using tool and scripts.
  • To save the overall process time, our expert engineers automated some sub-steps required for block creation.
  • With minimal changes, these scripts are reusable across multiple MATLAB or Simulink projects.

 

Tools Used:

  • Matlab, Simulink 2015b
  • Windriver Compiler