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SX Key and Debugger — Parallax Forums

SX Key and Debugger

cory33cory33 Posts: 4
edited 2009-05-20 02:44 in General Discussion
Hello,

I am new to SX chips and developement...
I have done some microcontroller programming in assembly and basic..in the past

I purchased an SX key (usb)·with tech board / kit......

I am just starting out and I have had no problems programming some of the basic intro programs on to the chip.
However, when I try to run the debugger (loading the debug demo program) and just try to·step through to get a feel for things, the SX chip sits in "sleeping" mode....I am unable to step or run through anything, and all I can do is reset the program....

I am probably missing something simple...??

anyone?

·

Comments

  • StarManStarMan Posts: 306
    edited 2009-05-18 18:17
    Do you have a resonator plugged into the socket of the board?
  • cory33cory33 Posts: 4
    edited 2009-05-18 18:50
    Hey,

    No...it specifies that the USB generates the oscillator..
    When I do a read device after I have programmed the chip..
    it shows ---Crystal-HS1
  • Capt. QuirkCapt. Quirk Posts: 872
    edited 2009-05-18 23:31
    In order to debug, you must remove the resonator.

    Before you can Debug,·click on the clock icon in the SXB ide, with the SX-key in·place. Then set the value, equal to your resonator.·Now you will be able to program and debug with the "bug" (spider) icon.

    This Nuts n Volts artical has a good DeBug example in it (the BREAK_NOW· subroutine).
  • cory33cory33 Posts: 4
    edited 2009-05-19 02:43
    Thanks..

    However, the clock freq is set to 50Mhz in the debugdemo program·..

    After I program the chip.....I check the clock and it·matches at 50Mhz..?

    I do not have an external resonator installed....??

    I have also tried debuging other programs and I get the same results

    just sits in "sleeping" when I attempt to step through the program????
  • PJMontyPJMonty Posts: 983
    edited 2009-05-19 17:55
    Cory,

    Can you list step by step exactly what you are doing when trying to debug? I mean a list like this:

    1 - Apply power to the board.

2 - Load program using File->Open

3 - Remove resonator from board

4 - Program chip using Run->Debug



    etc, etc

    If you provide a detailed description of each step you take, it's possible for someone to spot the problem.

    Thanks,
    PeterM
  • cory33cory33 Posts: 4
    edited 2009-05-20 02:44
    Sure thing:

    I have the SX tool Kit 45180 with SX key (usb) and I have installed SX editor
    3.2.9.2h beta..I can load and run programs but the debugger doesn't work.

    I plug the USB cord into my SXKEY
    and then·into my laptop...
    and SXKey into the tech board...
    I power up the tech·board..
    (no external oscillator installed)

    I run the editor....
    I open the following program (below)...Debug_demo.src (from sample programs provided)
    I select debug (ctrl-d)...
    It shows that it is erasing and then programming...
    the debug screens open up and the status window shows "idle" at the top
    I select step, walk, or run...
    and they all cause the sx28 to go from·idle to "sleeping" at the top
    If I reset the board...it goes back to idle......

    I have tried other basic programs with the same result...
    I have tried other computers and other USB ports with the same result..

    Parallax sent me a new SX key.... and it does the same thing..

    I have been able to just simply run programs and they appear to work..
    but I won't be able to get to far with any programming on my own if the debugger doesn't work..




    ;=======================================================================
    ;TITLE:········ debug_demo.src
    ;
    ;PURPOSE:······ Modifies three registers to demonstrate the SX-Key's
    ;·············· debug display.· Use Run -> Debug (or CTRL+D) to program
    ;·············· the SX, then click the Step or Poll button to see the
    ;·············· results.
    ;
    ;AUTHOR:······· Parallax, Inc.
    ;
    ;REVISIONS:
    ;· 06/09/98·Original release.
    ;· 09/17/04·Updated to support SASM.
    ;
    ;CONNECTIONS:
    ;· None.
    ;
    ;DETAILS:
    ;· Program the SX chip using the Run -> Debug (or CTRL+D) option.· Then
    ;· click the Step button to step through each instruction (taking note
    ;· of the changes on screen) or use the Poll button to run full speed
    ;· with updates to the display every loop iteration.· The Watch window
    ;· shows the values of registers IncReg, DecReg and NotReg in decimal.
    ;· NOTE: You must disconnect any crystal or resonator from the SX chip
    ;· in order to properly debug since the SX-Key will need to provide the
    ;· clock signal.
    ;=======================================================================
    ;
    DEVICE DIRECTIVES
    ··DEVICE··SX28,OSCHS2,TURBO
    IFDEF·__SASM· ;SASM Directives
    ··DEVICE··STACKX,OPTIONX
    ··IRC_CAL··IRC_SLOW

    ELSE··;Parallax Assember Directives
    ··DEVICE··STACKX_OPTIONX
    ENDIF
    ··RESET··Main
    ;
    VARIABLES

    IncReg··EQU·8···;The register to increment
    DecReg··EQU·9···;The register to decrement
    NotReg··EQU·10···;The register to invert
    ;
    DEBUG SETTINGS
    ··FREQ·50_000_000

    ;Create watch window to display values of registers in unsigned decimal.
    ··WATCH·IncReg,8,UDEC
    ··WATCH·DecReg,8,UDEC
    ··WATCH·NotReg,8,UDEC
    ;
    MAIN PROGRAM
    Main
    ;Increment IncReg, decrement DecReg and invert NotReg in a loop.
    ··inc·IncReg···;Increment IncReg
    ··dec·DecReg···;Decrement DecReg
    ··not·NotReg···;Invert NotReg
    ··break····;Break to update display
    ··jmp·Main···;loop


    ·
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