Simulink - Embedded Target for PIC

Simulink Blockset Embedded Target microchip devices: Pic24 / Pic 30 / Pic 32 /Pic33

Link to blocks details .

Embedded Target for PIC / dsPIC is a blockset for Matlab® that adds to simulink® Blocks specific to dsPIC and PIC32 peripheral.

Watch the Screencast (April 2009). Better quality movie is available here

realized by Mariano Lizarraga for the SLUG team

Presentation

The blockset generates C code from a Simulink model for a wide list of Microchip microcontrollers. The generated C code is compiled on the fly to obtain the executable binary file (.hex and .coff file) ready to download into the targeted microcontroller. The downloaded binary program behaves like the Simulink model.

This rapid prototyping tool for 16 bits PIC MCU allows to :

• generate and compile C code from a Simulink model and/or a Stateflow flow chart
• make the development easier, faster, bug free
• make the software easy to update
• Benefit from the Simulink graphical environment to describe complex calculation and complex models
• optimize fixed point calculation using the user friendly matlab fixed point toolbox
• monitor, log and plot data sent by the microcontroller with a matlab graphical user interface
• Use the logged data (from sensors) to optimize the embedded software using the Simulink simulation capabilities
• import your specific written C functions into the Simulink model and in the microcontroller
• Open C files as a "ready to use" project within MPLAB 8 or MPLAB X IDE.

When programming a microcontroller, a lot of time is usually spent on peripheral configuration and on real time problems like sampling rate, multitasking... This blockset gives you the possibility to get ride of these tasks and to concentrate only on the math part (control, filter, logic ...) of the Simulink model. You can simulate the model that will be implemented into the microcontroller. You do not need much knowledge about PIC/dsPIC programming. The blockset support most peripheral present on the microcontroller and configure automatically selected peripherals (configure also timers and model time step).

Debugging and monitoring on chip program with Matlab

Debugging and monitoring variables is very easy through UART thanks to one simulink block and the Graphical User Interface associated:

• The block "Interface Tx-matlab" implements a high level protocol using one UART port of the microcontroller. This block allows to send data from the microcontroller to the PC host in real time.
• A matlab graphical user interface can receive theses data through the Serial port of the PC/mac (can be a USB emulated serial port) and plot them in real time.

It makes real time Monitoring and debugging very easy.

It also allows logging data into the matlab workspace. The logged data can be used to feed a Simulink model for simulation. Thus, real microcontroller input data recorded (from ADC, IC...) are used for the simulink simulation or .m script file allowing to test or improve the simulink model using real data logged (noise and characteristics are the real one). Once the simulated model is tune, you can just re-program the microcontroller with the new improved model. The simulation result will be very close to the real model running in the microcontroller since input data come from the same peripheral and the microcontroller's running model is equivalent to the PC simulation model.

Capabilities

The blocks added to the simulink® library allow to connect most of the PIC24, dsPIC30, dsPIC33, and PIC32 peripherals (PWM, ADC, IC, OC, SPI, I2C, CAN, UART ...) to any other Simulink blocks.

C code generated for these peripheral is merged with the C code generated by the Real Time Workshop Embedded Coder® toolbox.

Possible target is most of the dsPIC30f, dsPIC33, PIC24H and few PIC32. ( see details on the download page)

Supported Chip:

See Release Notes and known bug for details PIC 24F ' PIC 32F** ' PIC 30F ' PIC 30F ' PIC 33FJ GP ' PIC 33FJ MC ' PIC 33FJ GP ' PIC 33FJ MC* 24fJ128GA006 32MX360F256L 30f2010 30f5011 33fJ128GP206 33fJ256MC510 33fj128GP202 33fj128MC202 24fJ128GA008 32MX360F512L 30f2011 30f5013 33fJ128GP306 33fJ256MC710 33fj128GP204 33fj128MC204 24fJ128GA010 32MX460F256L 30f2012 30f5015 33fJ128GP310 33fJ64MC506 33fj128GP802 33fj128MC802 24fJ64GA006 32MX460F512L 30f3010 30f5016 33fJ128GP706 33fJ64MC508 33fj128GP804 33fj128MC804 24fJ64GA008 32MX775F256L 30f3011 30f6010 33fJ128GP708 33fJ64MC510 33fj32GP302 33fj32MC302 24fJ64GA010 32MX775F256L 30f3012 30f6011 33fJ128GP710 33fJ64MC706 33fj32GP304 33fj32MC304 24fJ96GA006 32MX795F512L 30f3013 30f6012 33fJ256GP506 33fJ64MC710 33fj64GP202 33fj64MC202 24fJ96GA008 32MX320 30f3014 30f6013 33fJ256GP510 33fJ128MC506 33fj64GP204 33fj64MC204 24fJ96GA010 32MX340 30f4011 30f6014 33fJ256GP710 33fJ128MC510 33fj64GP802 33fj64MC802 24fJ16GA002 30f4012 30f6015 33fJ64GP206 33fJ128MC706 33fj64GP804 33fj64MC804 24fJ32GA002 30f4013 33fJ64GP306 33fJ128MC708 24fJ48GA002 33fJ64GP310 33fJ128MC710 24fJ64GA002 33fJ64GP706 24fJ16GA004 33fJ64GP708 24fJ32GA002 33fJ64GP710 24fJ48GA002 24fJ64GA002 Newly added chip  64MC204, 128MC204, 128GP202, 32MC202, 32MC204, 16MC304 , 33FJ256GP710A * PIC 32F SPI function not suported yet; * Compiler known and fixed bugs  * Check your compiler installation and version  at the matlab prompt ==> !pic30-gcc -v for pic30 and !pic32-gcc -v for pic32. **Check pic32 compiler v 1.04 Workaround **Check pic30 compiler PWM 2 Workaround from version v 3.12 to current version (3.25)...

The blockset for simulink works with the GCC compiler from Microchip®. MPLAB is not required but can be used for the programming the microcontroller (imports the .hex file and program the target).

Many MathWorks toolbox like "Stateflow®" and "Stateflow coder®" or "fixed point blockset" can be used with the blockset "Embedded Target for dsPIC".

See Examples for more details on the blockset capabilities.

Others Blockset for dsPIC

• Here is a Review of similar tools for PIC or dsPIC.

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