Rapid Prototyping with 16/32 bits MCU

Hi Jirka I implemented the Dead time on the PWM motor peripheral. Please test the new blockset version and let me know if the way it is implemented is usefull for BLDC motor control. download link : http://www.kerhuel.eu/wiki/Download It would be great to get an example of BLDC control using this bl...

Hey Corey, Thanks for this interresting question. These measurement are absolutly normal. - You changed the sampling time of the ADC inside the ADC block. - The model time-step was fixed at 100Khz (T = 10us) (quite high). PR1 = 400 : 400 instructions are executed within 10us - The 20% or 25% load yo...

Hi Corey, I am glad that you enjoy the blockset I created. As you probably noticed, Microchip blockset started its blockset ( inspired partly based on my work), and is now a great challenger. This kind of testimonial is exactly what I am looking for. Please feel free to copy it or write similar rema...

Ok, I can open the model with the block with matlab 2007b, but it will not compile because it needs an S function that is in the communication blockset that is not installed. Thus, I still cannot test it with matlab 2007b until I install the comm blockset. Anyway, the first model you upload compiled...

It's the same model as the one you posted ! anyway, I used C30 directly from simulink (through the blockset) You can import all necessary file in MPLAB, but you need to configure the whole project. Do remember to add the required library. It may be better to let matlab to compile all necessary libra...

In Simulation==>Configuration Parameters ==> dsPIC options (last item on the left) and Optimisation parameter: OPTIM_GCC : There are the following optimisations parameters: -O3 -fschedule-insns -fschedule-insns2 Thus, if your C30 version is expired, compilation optimisations are not working anymore....

I was able to test your model on a 2009b matlab with the communication blockset and it compiled without requiring any modifications. I do not have installed the communication blockset (for the integer to Bit Converter block) on the 2007a matlab version. However, you may post one more time the model,...

Hey Lizaveta, Sorry for the delay; I compiled successfully your model on matlab 2009b, with Microchip C30 v3_11. I get the .hex file without problems. However, I do not upload it on the forum as it seems to be a compilation test; the model will not do anything interesting. I think you will get alway...

Hi Jirka,

I compiled successfully this model on my system without doing anything particular.

Could you try to download the latest blockset version and test it again ?

Let me know if you still get the error.

Lubin

Hi Jirka, Thanks for the screen shoot. This seems to be a bug from the blockset since the error message talk about PWM motor 2 peripheral, but the PWM motor dialog is set on PWM motor 1 ! Thus, I'll try to look at this soon. Could you upload your simulink .mdl file, It will help to track that bug. F...

Can i ask, maybe later you'll be able to test it, cause I need it very much I have to find a matlab version with theses blocks available. Anyway, for the complex signal, there is a simulink block that convert complex signal into real part and imaginary part (theses two values are two reals), you ma...

I do not have the communication blockset (with PSK modulation and so on). Thus, I cannot test the model right now. Perhaps the AWGN channel block is too complicated for the dsPIC your are using. Try several optimisation options in the real time workshop pannel options. (Simulation ==> Real time work...

The error is there : untitled.c:145: error: unrecognizable insn: (0x018c9eb0) (insn 234 42 44 2 (set (reg:SF 2 w2) (unspec:SF [ (mem:SF (plus:P16APSV (subreg:P16APSV (plus:HI (reg/f:HI 15 w15) (const_int -36 [0xffffffdc])) 0) (const_int 24 [0x18])) [0 S4 A16]) (reg:HI 19 PSVPAG) ] 62)) -1 (nil) (nil...

Hi Alan,

It is not possible to replace RAM by EEPROM.
however, you may try to activate simulink optimization, try to check the box "inline parameters". This may save a lot of RAM memory.

Lubin

Bug find and solved.

Please download and try the last blockst version, let me know if it's working as expected !

Lubin

Ok, I reproduced the bug, I'll look at it very soon. It may be a new bug that appears in the last blockset update
I'll post a message when it's repaired (I hope in few days)

Thanks for repporting it !

Lubin

As far as I remember, I tested GP710 and MC710

Lubin

Please let me know the result, I will have a close look if you still encounter this problem.

Lubin

Try to clean up the matlab path

Which matlab version are you using ?
I should test that !

Lubin

Hi Cavalcante, did you updated the blockset ? This error appears if the new blockset find an old file from the old blockset (in the matlab path before the new blockst path), or if a file has been modified (or is corrupted) Solution is to delete all files from the blockst installation directory , ins...

Hi Cathia, Could not compile to test (no c files attached). However, you could try this : in Simulation ==> Configuration Parameters ==> Optimization (left) ==> Check box Inline parameters . Tips : You may have a better view of what's happening with : Format ==> Sample Time Display ==> Color (update...

Hi Cathia, C function call is only working on registred version of the blockset. Thus, check that you have a registred version (are you working in ASU team that use a registred version ?) Else, you may be using the blockset build (or copied !) by Microchip. Anyway, inf time should activate the block...

Hi Casparus, about the fust corrupted package, I do not know what it is. unisntall the blockset, clean up the maltab path and re-install the blockset. It may solve that problem. Some time ago, when I clicked on the Help button of a block, I was directed to the help page of the block. When I click no...

Would it be possible to integrate the extra blocks you added to get this to work into the input capture block itself? The strategy is to give user the more flexiblity . Thus, any "high level" function that could be done efficiently with simulink should be done this way. I mean, there will be no dif...

Hi Quan, I respond quicky, sorry if there are imprecision. OC works with a counter. For a given periode (set within the block) the counter will count from 0 to a number, let say it is 1000 here, this number is given in OCmax (it depends on your quartz). - The ADC starts conversion when the counter i...

Could you please have a look on the block's page : http://www.kerhuel.eu/wiki/Block/Output_Compare_HW

Unfortunatly, I will not have time to draw something (that would make it clearer)

If there are unclear point, please let me know.

Lubin

Hi, Thanks for the suggestion. Here is the solution I am using (see attached file : figure and model) Model time step is 1ms. The RC PWM signal arrived with a period of 20ms. Thus, The resetable integrator is set to 0 each time one pulse arrived. It increment 1 each ms. If there is no RC connection ...

Hello, ECAN has lots of possibility and it is still difficult to start to work on it. It's even more difficult now because I'm writing my PhD report and have some change planned in my private life (getting married soon). Btw, if anyone has knowledge on ECAN and Simulink, I would be happy to discuss ...

Datatype of the output of the block ADC is always uint16. Anyway, this uint16 store the value in the format you selected. Thus, you should use a type convert block, with Stored Integer Value (SI) (in opposition to Real Word Value) to convert the simulink representation of the data. Thanks for reppor...

Dear sathishr , It's a very long time I made the blocks CAN and I have not been using them since. Anyway, It works well when I tested it. Anyway, I do not understand how you can check the received data with this model. You should try for example to send CAN received data to the PC through the UART p...

Hi Lucien, Do you have a blockst version with the C call function unrestricted ?
If not, send me an email with the matlab version you are using, I'll provide you with that.

Lubin

Hi Chad,

Did you tried the "magic" yellow block called something like "configure Simulink model for dsPIC" ? add this block to your model, dbl click on it and it usually solved path problems.

Lubin

Hi,

The C function block is not available in the blockset demo version. This may however change soon...

Lubin

Hi Chad, This model compiles just fine with matlab 2007b. I attached the obtained .hex file. Anyway, if you have path error, you may add the yellow block "Configure Model for dsPIC" in the Simulink Configuration subblocks of the dsPIC blockset and click on it. This block check and configure if neces...

Hello Chad,

Does the models in the example folder compile ?
Could you upload the model you tried to compile ? (it seems it is not an example)

Lubin

Hi Casparus, I tested the model with matlab 2008b and I get the same error. It seems that matlab 2008b generate code that make the compiler to bug. I do not have solution for that. As the problem is due to the filter block fdatool, you may easily find a workaround : from the fdatool, generate a simu...

Dear Tina, In addition, I replaced my main C code file with your main C code file and I obtained the same error. Was I suppose to do it another way? This is no worth as the C code file you replace has just been replaced by the one generated by RTW Embedded Coder (i.e. Simulink). You could replace C ...

Hi Casparus, I open the model (with matlab 2009a) and compile it without problems. I attached the .hex file generated. I was wondering if the time-step is not to fast. at 30Khz, it would be better to use fixed point filter. You may considere using the busy flag port (see master block options) It see...

Hi Tina, Thanks for description of the error. I could not reproduce it, using Matlab 2006a and pic30-gcc V3.12 (type at matlab prompt >> !pic30-gcc -v ) and model provided in the example directory dsPIC dsPIC_33f_Explorer16.mdl as is. I attach the correct C code file generated on my system. This fil...

you're welcome.

There is a workaround when using PWM2 peripheral on some MC chip. This error comes from microchip definition file. I'll publish it soon.

Lubin

Dear John, The demo models are done with the blockset I developped. Thus, you should install my blockset to make them works, a version is freely available on my website . Microchip blockset can be installed next to my blockset. Please install them both, test them booth, and let us know what are the ...

Support for theses chip were started but is now stopped as it seems to be quite a lots of differences.
Few students from Supelec (french engineering school) attempted to use it, but I did not get news from them.

Lubin

I could not reproduce this problem.

Please Make sure you install properly the blockset and that you did not install it in the Matlab directory.

Then, if you still have that problem, could you provide more info about your configuration?

Lubin

The website, based on mediawiki has been upgraded from mediaWiki V 1.13 to mediaWiki V 1.15 Mediawiki is much more difficult than the forum phpbb to update as no automatic system are done to keep the changes you may have done on your own system... Anyway, everything seems All right. If you see any p...

Forum :

partially updated : from phpbb 3.0.4 to phpbb 3.0.5.
Not finished yet, may encounter few problems next few days (this is a testing message also...)

Hi John,

Could you post a model that generate this error ?

Thanks
Lubin

Hello John,

Thanks for that bug repport.
It will be corrected in the next version.

Tell me which matlab version you're using, I'll send you by mail the corrected version for testing purpose.

Lubin

A technical incident makes the website off from june 15 until june 20 (5 days in 2009).

Trafic generated by the website reach the limit allowed by my webserver. Thus, the webserver just cut off the connection until I raise the traffic limition.

Apologize for this incident.

Lubin

Hi Milan, I just simplified URL of the website but I did not find the solution to keep the old url compatible. Converting old URL to new one is simple : remove from the URL : index.php5?title= Thus, the new URL is : http://www.kerhuel.eu/wiki/Miniature_Inertial_Measurement_Unit_-_IMU#Download Hope t...

Hi Val, I respond very quickly: I cannot find the simulink model on the page of the the autopilote model Ok, I did not upload it yet. my mistake. Will do it soon. Please give me the name of the examples. http://www.kerhuel.eu/wiki/Explorer_16_Board I suppose the time step in the solver must be the s...

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