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Upload to BS2 fails & reboot board — Parallax Forums

Upload to BS2 fails & reboot board

akalatiakalati Posts: 31
edited 2008-02-25 00:40 in BASIC Stamp
Hey all,

I have v2.3.9 software running on an old Win95 Toshiba Libretto 70CT laptop, connected to a Homework BS2.· Debug window opens and talks to BS2 beautifully.· However, when I attempt an identify it will fail to ID anything on the port and at the same time, I see the BS2 board reset itself.· Upload never works (also resets as above).

Any ideas what's going on here?· Did a firmware upgrade on laptop, just to be safe; config'd COM ports many times, removing/disabling LPT, IR, modem, PC cards, etc.· Still no go.· Are there specific port settings that have to be defined in Windows?

The Libretto 70CT is the perfect unit to take along on demos of the BS2, since it's so compact.· It'd be great to get it working.

Any other ideas would be appreciated.·

Thanks,
Andy
·

Comments

  • Mike GreenMike Green Posts: 23,101
    edited 2008-02-22 04:45
    The Stamp is supposed to reset on an upload or identify. That's how the upload/identify routines get control. The Stamp Editor toggles DTR which generates a reset pulse. You can also get a reset at other times when you're opening the programming port.
  • akalatiakalati Posts: 31
    edited 2008-02-22 07:29
    What I meant is that the stamp resets, but the code never uploads. Doesn't see the BS and errors out (even though the debug sees communications just fine).
  • Chris SavageChris Savage Parallax Engineering Posts: 14,406
    edited 2008-02-22 17:10
    Andy,

    The most important piece of information is the fact that it’s generating an error. What is the message? Is an error generated when you identify or just when you program?

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    Chris Savage
    Parallax Tech Support
  • akalatiakalati Posts: 31
    edited 2008-02-22 20:14
    When I run, an error, "No BASIC stamps found" ; when I ID, no error. Both cases, the board resets. On rare occasions, an ID will actually return a device name in Device Type.

    This is on a Libretto 70CT, Win95, serial cable on COM1, software rev 2.3.9. Debug window shows all communications (so maybe the problem is when I transmit to the stamp? Then again, during debug, if I press a key, I see an xmit/recv to the stamp without a reset).

    Note that same stamp, board, and cable works fine on another PC. What can could the board to reset like that all of the time?

    Thanks.
  • akalatiakalati Posts: 31
    edited 2008-02-22 20:18
    Obviously, I also checked and rechecked all port settings in BIOS, Windows. Disabled LPT, IR, etc. Moved the onboard serial to COM2. Upgraded to latest firmware. None of these helped.
  • Chris SavageChris Savage Parallax Engineering Posts: 14,406
    edited 2008-02-22 20:54
    Did you disable the FIFO Buffers on the COM Port you're using?

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    Chris Savage
    Parallax Tech Support
  • akalatiakalati Posts: 31
    edited 2008-02-25 00:24
    No. Where do I do that in Win95? Device manager for the COM port? Or is it in BIOS?
  • akalatiakalati Posts: 31
    edited 2008-02-25 00:40
    Found it. Changed it. Fixed it! Thanks much Chris.
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