Page 891 - Mechatronics with Experiments

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MATLAB , SIMULINK , STATEFLOW, AND AUTO-CODE GENERATION 877
1 X_cmd
X_cmd
2 X_fbk DAC 1
X_fbk DAC

3 V_fbk
V_fbk
PD control
Simulation version

X_cmd

ADC X_fbk DAC DAC

ADC_TYPE1_M1_CON1 DAC_TYPE1_M1_C1
V_fbk
PD control
Real time version
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FIGURE A.48: An example model in Simulink : Simulation version (non-real time) and
real-time version with appropriate I/O software drivers for the target ECM (electronic control
module) to be used by the auto-code generation tools.

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3. Provide initial values in the MATLAB workspace for the parameters and variables
so that these initialization values can be included in the generated auto-code.
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There are three auto-code generation tools in MATLAB :
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1. Simulink Coder,
2. Embedded Coder, and
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3. MATLAB Coder.
The main auto-code generation tool is the Simulink ® Coder.The MATLAB ® Coder
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generates C/C++ code from MATLAB language files. The Embedded Coder generates
optimized code specific to various microcontrollers and digital signal processors, making
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use of the Simulink Coder and MATLAB Coder tools in the process. Once the auto-code
generation tools are configured for a target embedded micro controller, they can be saved
and re-used without having to deal with any configuration issues.
Let us consider the following target microcontroller for auto-code generation:
Microchip dsPIC33F. For development purposes, the following hardware and software
tools are needed:

1. Microchip dsPIC33F Starter Kit which has a development board with the target
microcontroller. The board also has a built-in debugger.
2. PC with USB interface to communicate with the development board.
The additional software tools needed for this auto-code generation for the target microcon-
troller are (Figure A.1):
1. Microchip dsPIC33F Blockset for Simulink ® (which would be integrated into the
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Simulink environment in Figure A.1).