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UART buffer chips? (for BS2-IC) — Parallax Forums

UART buffer chips? (for BS2-IC)

ArchiverArchiver Posts: 46,084
edited 2004-02-09 13:54 in General Discussion
Well, I got my serial port working and am able to read from my GPS
receiver (Thanks for the sample code Jon !).

I am working with BS2-IC which has no scratchpad RAM, and only 26
bytes of vars. So I'm looking at UART buffer chips. I found MAX3100
which provides 8 char buffer and SPI interface.

Question: I'd like to extend the buffer (to say 32 chars). Are there
chips that provide a larger buffer? or can I cascade MAX3100 or
other UART chips together?

Thanks, Caesar.

Comments

  • ArchiverArchiver Posts: 46,084
    edited 2004-02-08 05:46
    Caesar-

    Here's one alternative that has worked for many:

    http://groups.yahoo.com/group/basicstamps/message/30187

    Regards,

    Steve


    On 7 Feb 04 at 19:44, caesarsamsi wrote:

    > ...I am working with BS2-IC which has no scratchpad RAM, and only 26
    > bytes of vars. So I'm looking at UART buffer chips. I found MAX3100
    > which provides 8 char buffer and SPI interface.
    >
    > Question: I'd like to extend the buffer (to say 32 chars). Are there
    > chips that provide a larger buffer?...
  • ArchiverArchiver Posts: 46,084
    edited 2004-02-09 07:00
    Thanks very much Steve ! I'll try this out.

    --- In basicstamps@yahoogroups.com, "S Parkis" <parkiss@e...> wrote:
    > Caesar-
    >
    > Here's one alternative that has worked for many:
    >
    > http://groups.yahoo.com/group/basicstamps/message/30187
    >
    > Regards,
    >
    > Steve
    >
    >
    > On 7 Feb 04 at 19:44, caesarsamsi wrote:
    >
    > > ...I am working with BS2-IC which has no scratchpad RAM, and
    only 26
    > > bytes of vars. So I'm looking at UART buffer chips. I found
    MAX3100
    > > which provides 8 char buffer and SPI interface.
    > >
    > > Question: I'd like to extend the buffer (to say 32 chars). Are
    there
    > > chips that provide a larger buffer?...
  • ArchiverArchiver Posts: 46,084
    edited 2004-02-09 13:54
    Considering the effort you're may end up going through to create an
    external buffer, getting a BS2p may be a simpler solution for your GPS
    project. It runs faster too, and we have lots of code for it that you
    can quickly adopt.

    -- Jon Williams
    -- Applications Engineer, Parallax
    -- Dallas Office

    Original Message
    From: caesarsamsi [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=eUvQV1WxSoDASqNd2y1Jr4FIPsNjszBUU25yNkaWv3dxJoLk3ZsTFzOC_5GcRp0V7B96U_tKT2-0x7__vw]cmsamsi@h...[/url
    Sent: Saturday, February 07, 2004 1:45 PM
    To: basicstamps@yahoogroups.com
    Subject: [noparse][[/noparse]basicstamps] UART buffer chips? (for BS2-IC)


    Well, I got my serial port working and am able to read from my GPS
    receiver (Thanks for the sample code Jon !).

    I am working with BS2-IC which has no scratchpad RAM, and only 26
    bytes of vars. So I'm looking at UART buffer chips. I found MAX3100
    which provides 8 char buffer and SPI interface.

    Question: I'd like to extend the buffer (to say 32 chars). Are there
    chips that provide a larger buffer? or can I cascade MAX3100 or
    other UART chips together?

    Thanks, Caesar.
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