Rapid Prototyping with 16/32 bits MCU

to add the C:\program files\...C30...\bin directory in the path,
have a look on http://www.computerhope.com/issues/ch000549.htm

Hi NigmaTech, Make sure that the bin directory of the C30 compiler is added in the windows path. Matlab must find the .exe file present in the C30 repertory because this directory should be in the windows path. It it is not present, you should add it manually ! If too many people get the problem, I ...

Hi, I will not have time to do it soon. I have to clean up the existing labview files I have. I attach an old project where labview was used to watch the variables (like the matlab interface rs232gui) and to send new configuration parameters. This was for a plane. Few screenshoot are available on my...

Hi Greg, Thanks for all theses information. I noticed theses facts (C32 not added in the windows path when installing with MPLAB, but option is available if installing C32 with its standalone installer. Also please note that the PIC24 (1) and dsPIC C30 (2) compilers appear to write to the same direc...

Hello Greg, I noticed that you also got a problem with the C30 installation. Did you solve the problem? Could you share the solution if there is some trick to apply while installing C30 ? Feel free to register and to then edit the "installation page" of the website's wiki. About the C32, there was a...

It is probably possible to drive an LCD. What is the interface of the LCD ?
If you have to create a complexe sequential logic, you could also use stateflow.

In the worst case, use the "C Call function block" to write the driver for the LCD.
( only available in the registred version of the blockset)

Hi carbon9, Few comments about the model: A simulation of the model shows that the led should be blinking at a rate of 1Hz (duty cycle of 0.5s). You do not get 1Hz because your quartz configuration (master block dialog box) may not be configured correctly (i.e. information provided to the simulink m...

Hi Gladiac, dsPIC30F6014 and dsPIC30F6014A should be compatible. I guess that dsPIC30F6014A is a revised version of the dsPIC30F6014 microcontroller with few correction. I may add the dsPIC30F6014A pic to the blockset, but is it necessary ? (C program would use different library and definition file,...

I am not sure xPC is the solution: As far as I know, Virtual reality blockset will not work on xPC Target. The solution may be to find (on the web) the Simulink block that is able to send data throw Serial port. It is the hard part! Otherwise, you can write your own block function for simulink and u...

Wiki is being setup. It will replace soon the static website. An overview is available at http://www.kerhuel.eu/wiki I think this structure will help to improve the doc. As modification is made easily, I will add information as I get questions on the forum. You are also free to correct pages if you ...

Hi Stefano, I do not see any image inside your last post. From the microchip doc : The external quartz you can use with a PIC32 chip must be within the [3.5 40]MHz range. If you use an External Clock, it must be within the [0 72]Mhz range. You can use PLL multiplier to speed up internally the clock....

Hi Stefano, the file "dspicliste.mat" substituting the existing value with the new value [1 2] This solution is correct in this very specific case. However, in most case, it will not work since severals entry have to be coherent so as to generate a correct C code. The entry has been corrected in the...

Hi Stefano,

Thanks for reporting this bug. It should be corrected now.
Please, have a look on the experimental version of the blockset on the Release Note Page (Bottom).

Lubin

Hello, The C32 has a lot of multipliers or diviser factor allowing to configure the chip so as to get the desired MIPS. On the master block, you have to : - Set correctly the quartz mounted on your board. ( Quartz or External Clock Frequency ) - Set the desired MIPS ( Desired Instruction Per Seconds...

Hi, Thanks for reporting this problem. It should be solved on the very last version of the blockset 0.98c, experimental now. (download if only from the release note page ; Bottom of the page)

Are you looking for this block ?

: Block_Interface_TxMatlab.png (1.13 KiB) Viewed 7828 times

Double click on this block is the equivelent to type at the matlab prompt :
>> rs232gui

You may get erratic result when setting in the UART configuration block a buffer with more than 256 bytes. The default is 32. Workaround: Set the buffer for both RX or Tx to a value lower or equal to 128 bytes (may work also with 256 bytes) This bug will be corrected in the next blockset version (0....

Hi Salemimoh, few elements that may help : - Do not install the blockset in a subdirectory of matlab - Check that the blockset has been added to the path of matlab (File ==> Set Path ...) The root of the blockset and its two subdirectory blocks and dspic must be in the path. (automatically done by t...

To import data received using Interface Tx-Matlab, I can see two methods : First of all, receve data in the matlab workspace using the graphical interface. To remove NaN values from the R matrix, use the custom made function : R = padr(R,1); Then, either you save data using a file format that Excel ...

The generated code for the configuration of the ADC with your model is : 124 /* S-Function "dsPIC_ADC" initialization Block: <Root>/ADC Input */ 125 /* Initialise ADC converter */ 126 /* 0 mean each 1 conversion */ 127 #define NoSamplesADC 1 128 #define ADCSval 3 129 #define SAMCval (1 << 8) 130 #de...

Hi Nigma,

This would be quite surpising to have an inversion on pin AN7 ==> AN3.
Could you upload the model (.mdl file) so as to have a look ?
What are the parameters for Vref+ and Vref- ?

Lubin

Hi Mariano, This is a bug ! Thanks for reporting. A quick glance at the doc of the 33F256MC710 : I find only one buffer register for the ADC of this PIC. It seems that DMA data transfert must be used if you are doing more than one ADC conversion. I have idea to workaround that problem. I guess that ...

Hi NigmaTech, All required dsPIC peripheral for this application are suported by the blockset. The blockset will help to build in no time the software for the dsPIC. You will have two Simulink model : - model onboard the dsPIC - model for the user interface running on your PC You have to create your...

wam wrote:can I get exactly same signal from PWM1L

Yes,
However, one difference between PWM motor and OC (Output Compare) block is that the PWM signal period cannot be changed during execution (with the PWM block). Since your period is fixed (Frequency set to 4Khz), It is OK.

Hi Defe, This model should work. You should get a duty cycle of 1/3. If it doesn't, try forcing the sampling rate of the constant to .001 for example. Using the OC block, you will be able to get a PWM signal with variable duty cycle and period. You just have to care about scaling theses two values w...

Hi Pick,

The blockset support matlab, starting from version 2006a, i.e. Matlab V7.2 (january 2006)
It is not gonna to work on earlier matlab version.

Lubin

Hi Defe,

Could you upload your Simulink model file ? or a screenshoot as you like...

Hello Mariano,

All basic initialization task are done in the c file wih the same name as your model. Let say <ModelName>.c
At the bottom of this file is the initialization function :
void <ModelName>_initialize(boolean_T firstTime)>

I hope this will help.

Lubin

Hi Mariano, About the first proposition: see what are the actual values being set for the involved registers This is difficult since for most peripheral, Theses register's values are not computed at the matlab workspace level but directly in the C code generated. Btw, isn’t it possible to avoid the ...

Same question as Mariano,

see : viewtopic.php?f=5&t=110#p299

I think I will do it. When will you need it ?

Hi Julien, Thanks for your interrest for the blockset. My understanding is than Matlab could not acces to the PIC30 compiler. The compiler path must be added into the environment variables. To check if Matlab find the C30 compiler, you can type at the matlab prompt : >> !pic30-gcc The normal respons...

Hi Julien, The new release (V0.98) of the blockset now support the PIC30 v3.10. Therefore, you have to install this version of the compiler (available on the website of Microchip) in order to have the blockset working. Do not forget to add the block "Configure Model for dsPIC" and to double click on...

Hi Wam,

The project seems quite small and could do it with the demo version of the blockset.
I do not get the meaning of :

wam wrote:triangular waveform and obtain the output from PWM1L

You 'd rather start your project and post question about the model you create if you are in trouble.

Lubin

Hi, Up to now, some bugs were reported about the C call function One bug appears when using C Function Call with one input and No output. Most of these bugs are now fixed and will be released very soon in the next version (0.98) Anyway, it may greatly help if you could upload on the forum a simple e...

Hi, I corrected the bug : if you have only one input vector, you do not need to add an (unused) output to the function. This will be available in the next version (i.e. 0.97b) Remark about the inline parameters : When the C call function use input vectors with more than 2 elements (an array in C lan...

Hi Kovak, It would be interesting to get your solution to the problem ! For the second question I want to do a notch filter with a dsPIC for an university project. The scheme is: Matlab ECG signal --> dsPIC filter ---> Matlab Graph Is it possible to do this? I don't want to create and flash the dsPI...

Hi Mariano, I confirm the bug. Will fix that shortly ! I propose the following solution (while I am working on that bug !) - add an output to the C function call block (like char or whatever) - uncheck the "inline parameters" in Simulation ==> Configuration Parameters ==> Optimization This solution ...

Hi kova, Could you provide the complete compilation message (including the error) ? Note that he last version of the C30 compiler (V 3.10 and 3.10b) is not supported yet. It seems that microchip has changed the repertory where some difinition files are stored. This change make the matlab script unab...

Hi Mariano, Hi Masaki, in your function declarations (i.e. you C file) you SHOULD NOT include the extern keyword If you declare the variable (in the sense that you want the C file to provide a memory place to store it) in the C file, you are true (i.e. needs to remove extern keyword). However, there...

Hi Kova, It seems that you are using a version of the blockset for dsPIC that is not adapted to your matlab version. (so .p files are not recognized) You must use a version of the dsPIC blockset that is supported by your matlab version... ==> use the version of the dsPIC blockset that support Matlab...

Hi, As I know that I do not spend enough time in writing tutorial and docs; the website quite bad to demonstrate the possibilities that Simulink provides with the Real Time Workshop Embedded Coder. II was thinking few weeks ago to set up a Wiki so as to be able to gather, with help of others, exampl...

Hi Mariano,

You could try sending a mail to Claudiu (mail at the bottom of his webpage : http://www.etc.ugal.ro/cchiculita/softw ... loader.htm)
It works once for me

Thanks for sharing that information about PGC/PGD...

Hi Mariano, I have no idea if the chip can be programmed using any PGC/PGD pin. It may be only for debugging ? If anyone else tried... I mostly use the very usefull "tinybld" bootloader working with UART1 or 2. (I add a "reset" mechanism in my simulink model that reset automatically the dsPIC when i...

Hi Mariano, I am wondering to do some modification to the SPI module to get an interrupt driven SPI block. My ideas are clear now on how I am going to do it. It may be usefull to know more precisely how you want to use it in order to check that my implementation will fit your needs. I may addapt it ...

Hi Mariano, I understand that you are going to use MPLAB (i.e. no bootloader) to program and debug your microcontroller chip. You will set-up a project, import c and library files (.a) generated by Matlab/Simulink and the blockset for dsPIC, and compile the whole project using MPLAB. (This will enab...

I guess I did not choose the right function name to call.

This model compile.

Mariano_EEPROM2.zip: model with external call to C function using assembly language file (.s file); (18.05 KiB) Downloaded 654 times

Lubin

Hi Mariano, I converged to the same solution. You were quicker! Anyway, the model compile without any 'C function Call' block, but when I am trying to access to one function, It is not ok ! It has maybe to do with the .h file that we do not declare... SPIMasterTest.o(.text+0xe2):C:\prog\Matlab2\RTWd...

The C30 compiler V3.10 has been released few days ago. I did not test it on the blockset yet. There may be few problems.
I'll try to look at it soon.

Lubin

Try to check "Wait for incomming data (slave mode)" and uncheck "Wait for previous operation to finish, and reset before read".
The block menu is not very clear yet. I'll try to make it more clear in the next version...

Hi Julien, Could you provide your matlab version ; matlab installation directory ; Could you also check on the forum for similar problems ? (for example, Is the gmake.exe program available from the matlab prompt ? ) try typing !gmake and see what happen... is the C30 compiler installed ? Where is it...

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