Assembly to PBasic

NWUpgrades

I am having an issue with a stepper motor controller that I had posted about on the Basic Stamp site. I was told that this code is in Assembly.· The problem is I am not the best at programming and was wondering if there is anyone that can convert the code to PBasic for me, or tell me whet I need to do. I have tried known working code that John sent me some time ago, but the motor will only go CW, unless I swap the wires from the motor to the controller, then I can get it to go CCW. I am using Pin 0 for Direction and Pin 1 for Step. Thanks in advance for any help.

Here is their code:
;16c54 step motor asm;Control by pulse and signals (JP1 Removed);==========================================MODE_A BTFSC PORTB,3 ;CP pouse in? GOTO MODE_A_BACK ;CP=1 no pouse BTFSC FLAG, 0 GOTO $+2 ;high-->low GOTO MODE_A ; BCF FLAG, 0 BTFSS PORTB,2 ;when RB2 =low voltage and RB2-DIR=high,TEMP=TEMP+1 ,contrarily TEMP=TEMP-1 GOTO A_LOOP1 INCF TEMP, F GOTO A_LOOP2 A_LOOP1 DECF TEMP, F A_LOOP2 CALL STEP_RUN ;one pouse step one,so differ frequency can adjust step motor speed. GOTO MODE_A MODE_A_BACK BSF FLAG, 0 ;normal RB3=H,FLAG D0=1 GOTO MODE_A

Franklin

Where is the code for STEP_RUN?

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- Stephen

NWUpgrades

I have no clue!!! Like I said, I am not that great at programming, and have never played with assembly. I had posted this question on the Basic Stamp forum and was directed here. I was just wondering if anyone can figure this out and translate it to PBasic.

Leon

It's (badly written) PIC assembler. It should be very easy to convert it to SX assembler (the SX uses the PIC instruction set).

Leon

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Amateur radio callsign: G1HSM
Suzuki SV1000S motorcycle

5ms?

Have a look

http://forums.parallax.com/forums/default.aspx?f=5&m=348254&g=348336#m348336

http://www.parallax.com/Store/Accessories/MotorServos/tabid/163/CategoryID/57/List/0/Level/a/ProductID/65/Default.aspx?SortField=ProductName,ProductName

http://forums.parallax.com/forums/default.aspx?f=5&m=353227&g=353231#m353231

http://search.parallax.com/search?q=stepper&ie=&site=parallax&output=xml_no_dtd&client=parallax&lr=&proxystylesheet=parallax&oe=

http://forums.parallax.com/forums/search.aspx?f=7

NWUpgrades

I do not need SX Assembler. I need PBasic.

NWUpgrades

Also, I have a TON of stepper motors and do not need any more. My project does not allow for using up an expensive Basic Stamp and the ULN2003 to control a motor. Any how, I have more the most part figured out a solution using the code John sent me. I just have to ground the controller to my Homework board as well as it's normal ground and it all works. Do not ask me how, because I am not that far advanced in electronics, but it does work and now I can move on.

PJMonty

NWUpgrades,

If you need PBasic, then you are posting in the wrong forum. I would suggest you locate a forum that deals with PBasic, as this forum aimed at SX users who program in SX assembly and SX/B. If any other programmers hang out here, then great, but don't expect to find many who aren't programming SX assembly or SX/B.

Thanks,
PeterM

RobotWorkshop

NWUpgrades said...
Also, I have a TON of stepper motors and do not need any more. My project does not allow for using up an expensive Basic Stamp and the ULN2003 to control a motor. Any how, I have more the most part figured out a solution using the code John sent me. I just have to ground the controller to my Homework board as well as it's normal ground and it all works. Do not ask me how, because I am not that far advanced in electronics, but it does work and now I can move on.

I think you missed the point of those links. If you navigate the Parallax website to the unipolar stepper motor they sell you can find examples on how to use it in the PDF documentation on that product page. It shows how to connect it to a BASIC Stamp and also shows code examples.

That assembly code you posted was just a fragment of a larger program and isn't worth messing with. Just figure out exactly what you want your program to do and use the examples that Parallax already provides as a guide.

http://www.parallax.com/Portals/0/Downloads/docs/prod/motors/Stepper_Motor_27964.pdf