[waleed alhadidi]

Hi all,
I am building this dc servo controller :
http://elm-chan.org/works/smc/report_e.html

I am a manufacturing engineer and have no background on microcontrollers. I need to know how to input the parameters to the controller from the PC ? What program is used.
Till Now I have not programmed the at90s2313 MCU although i have the programmer but because in the firmware of th smc there are three files:
avr.inc
smc.asm
smc2.asm
and i don't know which one is the source code that i need to program th MCU and how will I enter the parameters. So I need help in this.
Thank you in advance.
Edit/Delete Message

[CountZero]

You will have to download Avrstudio from this link: http://www.atmel.com/dyn/products/to...p?tool_id=2725

I don't know the difference between the two versions, perhaps you can find that detail on the original page(also note that there is a even newer version for the more modern attiny2313).

You use one of the .asm files and assemble it to a .hex file in avrstudio(the .inc file is also needed). After that step you program the hex file into your microcontroller.

To get you started using AVR's go to these pages:

http://www.avrbeginners.net/
http://www.avrfreaks.net

[waleed alhadidi]

Thank you so much CountZero,
I will try to learn the avr programming by avr studio. but i still don't know how to input the online commands mentioned in the controller page
http://elm-chan.org/works/smc/report_e.html
It seems that a software is used to input these commands from the PC to the controller and this picture is put on the page showing the commands written in the PC
http://elm-chan.org/works/smc/term.png
So if any one can help me how to input these online commands i will be grateful.

Thank you again ContZero

[CountZero]

Any terminal should word, for instance hyperterm or whatever the one shipped with windows is called. Don't worry about that step yet... focus on assembling the file and programming your AVR

[waleed alhadidi]

Thank you CountZero I appreciate your help and patience, but I didn't understand this :

Any terminal should word, for instance hyperterm or whatever the one shipped with windows is called

Thank you again for your patience

[epineh]

Hyperterminal is the program you use to configure the PID settings, once the micro is programmed and working.

Use a serial cable, plug it all in and start Hyperterminal, you will have to set up the correct baud rate, usually 9600 for this kind of thing.

Once Hyperterminal is happy and connects to the Elm-Chan drive you should get some kind of menu that you can use to configure your PID settings.

You must have the micro programmed with the original code BEFORE you try this, as CountZero mentioned you will need to get this sorted before you can use hyperterminal. I think the latest asm file is smc3a, at least out of the ones I have stored on my HDD, and I assume the compiler will need the .inc files to program the micro (I haven't got that far yet).

Good Luck !

Russell.

*EDIT... just checked and the baud rate is 38.4k bps and the serial data format is N81.

[waleed alhadidi]

I am very grateful to you epineh for the help. You made it clear to me
but where can I get the (Hyperterminal) software from?
Thanks again

[epineh]

Hyperterminal comes with windows, goto : Start/All Programs/Accessories/Communication/Hyperterminal

This will only configure the PID settings and the operation modes, you will still need to program the AVR first, something like the STK500 and AVR Studio or search for an AVR programmer that you like.

Russell.

[waleed alhadidi]

Thank you Russell I will try that. I appreciate your help and patience with me.

[waleed alhadidi]

Can anyone explain how can i make one .hex file from two assembly file ?
I mean how can I put the .asm file with the .inc file in the hex file ?
Thank you

[CountZero]

Use AVRStudio

download from www.atmel.com

[epineh]

I have just made a new HEX file for the Elm Chan drive, I have made one little change, I set the default mode to 3 so when you reset the drive it will go into servo drive, this way you don't have to connect up serial comms to restart the drive, this will be especially handy while tuning, as the drive will be reset frequently.

Be warned though, this will make the drive go into servo operation as soon as it is powered up, so be ready for "interesting" things that may happen

Just rename the file to a .hex extension and it should be fine.

Also be aware that I haven't tested this yet, but I compiled the same way as I did the original code and that worked for me. I should be running the drives up in about a week.

Cheers.

Russell.

[epineh]

I just noticed in your first post you are using the AT90S2313, this is a different chip than the standard Elm Chan documentation lists, which is the ATTiny2313.

I am not sure if the AT90S2313 will work the same, I guess it should, but the include file for the original code is for the ATTINY2313 which is what I have compiled, that would have to be changed at least.

Russell.

[waleed alhadidi]

Thank u epineh . But the file u attached is too large for the AT90S2313 AVR because the datasheet says it has only 2K Bytes of programmable flash memory and the hex file u attached is 4K Byte size. Am I wrong or what ?
Thanks again

[waleed alhadidi]

I just noticed in your first post you are using the AT90S2313, this is a different chip than the standard Elm Chan documentation lists, which is the ATTiny2313.

But in the schematic the MCU is AT90s2313. Do u think that they draw in the schematic a MCU and give the code for another one ?

[CountZero]

I think he started using the 90S313 but has later switched to the tiny2313.

[CountZero]

Look at the firmware marked obsolete if you want to stick with the 90s2313

Edit: I pointed this out to you in my first reply in this thread..

[waleed alhadidi]

But I've just found that even the ATtiny2313 has 2K Bytes of in-system reprogrammable flash memory, Look at this datasheet :
http://www.atmel.com/dyn/resources/p...ts/doc2543.PDF
and this is the same problem with the AT90s2313

[CountZero]

Yes? they are compatible....

The size of HEX file is always much larger than the actual data in it. Open it and take a look at it (with a text editor).

[waleed alhadidi]

Do you mean I shouldn't care about the size of the text file that appears to me? If so then how can I know the actual size of data that will be input to the MCU?
Thank u so much