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Propeller use a BOE (USB) of BS 2 to communicate whit PC ? — Parallax Forums

Propeller use a BOE (USB) of BS 2 to communicate whit PC ?

PodionPodion Posts: 90
edited 2011-12-27 11:30 in Propeller 1
Hello,

I just what to no if it's possible to use a BOE (USB) ( http://www.parallax.com/Store/Microcontrollers/BASICStampDevelopmentBoards/tabid/137/ProductID/126/List/0/Default.aspx?SortField=ProductName,ProductName ) of BS2 to communicate whit the PC using a prop chip 40pin ( http://www.parallax.com/Store/Microcontrollers/PropellerChips/tabid/142/CategoryID/18/List/0/SortField/0/Level/a/ProductID/332/Default.aspx ) ?:innocent: They use the same pin RXD, TXD, DTR ---- SOUT, SIN, ATN and VSS to communicate. I just to use the integrate USB interface on the board, is that possible ?

Thank You














Comments

  • BobCochran13BobCochran13 Posts: 10
    edited 2011-12-23 20:43
    There is an article in the January issue of Nuts and Volts magazine discussing how to interface a Propeller with a PC. It looks so interesting that I want to do it as well.
  • Jack HidleyJack Hidley Posts: 4
    edited 2011-12-23 21:58
    Bob,

    Is the article you are referring to the "The Spin Zone" on page 58? It is near the bottom of the link below.

    http://www.nutsvolts.com/index.php?/magazine/issue/2012/01
  • Mike GreenMike Green Posts: 23,101
    edited 2011-12-23 23:17
    Podion,
    I think what you're asking is whether you can use a USB BOE with a 40-pin Propeller chip for programming the Propeller. The answer is not really. First of all, the Propeller uses a 3.3V power supply and 3.3V logic signals while the BOE provides a 5V power source and the USB interface provides 5V logic signals. You would need to install a 3.3V regulator and some interface parts for the serial interface. At that point, you'd probably be better off getting a PropPlug for the PC interface and still adding a 3.3V regulator. You could install a SpinStamp into the BS2 socket. This has the 3.3V regulator on the SpinStamp module along with an EEPROM and crystal for the Propeller. You'd still need a PropClip or PropPlug for programming since the SOUT, SIN, ATN interface runs at 3.3V and isn't guaranteed to work with the USB interface of the BOE (although it probably does work) and you don't use the SOUT / SIN / ATN interface for programming.
  • BobCochran13BobCochran13 Posts: 10
    edited 2011-12-24 10:36
    Jack, yes the link you provided is the Spin Zone article I meant.

    Bob
  • BobCochran13BobCochran13 Posts: 10
    edited 2011-12-24 10:45
    Mike Green wrote: »
    Podion,
    I think what you're asking is whether you can use a USB BOE with a 40-pin Propeller chip for programming the Propeller. The answer is not really. First of all, the Propeller uses a 3.3V power supply and 3.3V logic signals while the BOE provides a 5V power source and the USB interface provides 5V logic signals. You would need to install a 3.3V regulator and some interface parts for the serial interface. At that point, you'd probably be better off getting a PropPlug for the PC interface and still adding a 3.3V regulator. You could install a SpinStamp into the BS2 socket. This has the 3.3V regulator on the SpinStamp module along with an EEPROM and crystal for the Propeller. You'd still need a PropClip or PropPlug for programming since the SOUT, SIN, ATN interface runs at 3.3V and isn't guaranteed to work with the USB interface of the BOE (although it probably does work) and you don't use the SOUT / SIN / ATN interface for programming.


    I have a 40-pin Propeller DIP as well, and a Prop Plug. I'm following the connection diagram in the Propeller Manual v1.2 to get started.
  • Mike GreenMike Green Posts: 23,101
    edited 2011-12-24 15:17
    That works (the Propeller Manual). You should also download the Propeller Education Kit (PEK) Labs. The first one is all about hooking up a DIP Propeller with voltage regulators, EEPROM, crystal, etc. on a breadboard. Look at the "sticky" thread for the PEK Labs at the top of this forum's thread list.
  • BobCochran13BobCochran13 Posts: 10
    edited 2011-12-24 19:38
    Thank you very much -- I missed the Labs downloads and hurried to correct my oversight. I really appreciate this. Happy holidays!
  • PodionPodion Posts: 90
    edited 2011-12-27 11:30
    Thank you all. I guess I'm going to buy a prop plug. This is rally the simples way to do this.
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