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parallax development board rs232 — Parallax Forums

parallax development board rs232

angel2indigoangel2indigo Posts: 7
edited 2011-06-15 10:16 in BASIC Stamp
hi, i've lost my usb connection and trying right now to connect the board with a rs 232 cable to a com port on my pc.
i do get an echo on com1 but the software says: No basic stamps found.

my questions are:
1 can i connect my develpment board with a rs232 cable to my pc to program the stamp module?
2 what are the correct com port settings?

thanks in advance

Comments

  • angel2indigoangel2indigo Posts: 7
    edited 2011-06-14 05:11
    sorry i've forgotten this:

    my questions are:
    1 can i connect my develpment board with a rs232 cable to my pc to program the stamp module?
    2 what are the correct com port settings?

    thanks in advance
  • Mike GreenMike Green Posts: 23,101
    edited 2011-06-14 08:01
    If what you have is a USB development board, you will have to remove the Stamp from the socket on the board and carefully put it in the breadboard area, then connect the Stamp to your PC using the diagram in the Basic Stamp Syntax and Reference Manual, page 28. You'll also have to connect power and ground, either +6V to +7.5V to Vin and Vss or regulated +5V to Vdd and Vss.
  • angel2indigoangel2indigo Posts: 7
    edited 2011-06-14 09:01
    thank you so much for your replay

    i have the professional development board with the bs2sx rev f chip(and others bs1 40 pinchip etc).

    is it possible to program the chip with a rs232 cable?

    thanks in advance
  • angel2indigoangel2indigo Posts: 7
    edited 2011-06-15 06:16
    i'm ot sure i have 2 0.1 F capacitors,

    can i use bigger ones?
  • Mike GreenMike Green Posts: 23,101
    edited 2011-06-15 08:50
    I thought the Parallax Professional Development Board only had the DB9 (RS232) programming connection and that the USB version just came with a plug-in USB to serial adapter. In that case, you're all set for programming the BS2SX and the BS2P40 using an RS232 cable and an RS232 serial port on your PC. How about posting a picture of your board or at least the Parallax part number from the board?
  • RDL2004RDL2004 Posts: 2,554
    edited 2011-06-15 09:43
    Some of the Professional Development Boards did have the USB connection. I couldn't find a part number on my board but it does have a 2005 copyright, so maybe it is an early version.

    Angel2indigo, if this is the board you have you should be able to use the DB 15 connector just to the right of the USB connector in the photo.
    pdb_usb.jpg
    1024 x 681 - 416K
  • PublisonPublison Posts: 12,366
    edited 2011-06-15 10:07
    RDL2004 wrote: »
    Some of the Professional Development Boards did have the USB connection. I couldn't find a part number on my board but it does have a 2005 copyright, so maybe it is an early version.

    Angel2indigo, if this is the board you have you should be able to use the DB 15 connector just to the right of the USB connector in the photo.

    Is there a number in the lower left hand corner? 28138?

    It seems they used the same number for USB and Non-USB board. Can't find the schematic for the USB board.

    Are you sure that's a DB-15 and not a DB-9?
  • RDL2004RDL2004 Posts: 2,554
    edited 2011-06-15 10:16
    My bad, it is a DB-9 and that number is there, 28138. It's just not real obvious that it's a part number. I was looking on the back and the upper right area where the Parallax logo and phone number are.


    edit: I dug out my Parallax binder and found the original documentation. I scanned the page with the USB circuit and made it into a pdf. It's the first time I ever used OpenOffice to export a pdf, so if you have problems with the pdf let me know and I'll try something else. I think the file size is way too big, but it's the best I could do at the moment.
    edit2: I checked and the USB connection was present on the board in the 2007 catalog, but gone in 2008.
    pdf
    pdf
    PDB_FTDI.pdf
    1M
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