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uM-FPU64 SPI driver object — Parallax Forums

uM-FPU64 SPI driver object

cessnapilotcessnapilot Posts: 182
edited 2011-11-12 17:39 in Propeller 1
A driver object for the Micromega uM-FPU64 with 2-wire SPI connection has been uploaded to OBEX.

http://obex.parallax.com/objects/803/

The demo focuses on 64-bit integer and float operations.

Cheers,

Istvan
FPU64_SPI.jpg
1024 x 769 - 130K

Comments

  • hover1hover1 Posts: 1,929
    edited 2011-11-11 09:29
    cessnapilot wrote: »
    A driver object for the Micromega uM-FPU64 with 2-wire SPI connection has been uploaded to OBEX.

    http://obex.parallax.com/objects/803/

    The demo focuses on 64-bit integer and float operations.

    Cheers,

    Istvan

    Nicely done. That was a good amount of work.

    My chip is still in the mail. Can't wait to try the demo.

    Thanks!

    Jim
  • Keith YoungKeith Young Posts: 569
    edited 2011-11-11 20:18
    I'm very interested in using this! Is there a recommended place to get this chip from?

    Also how important are the capacitors? Not sure where to get the 6u2 Tant.

    Thanks,

    Keith
  • cessnapilotcessnapilot Posts: 182
    edited 2011-11-11 23:00
    roughwood:

    Look at Micromega Corporation web site.

    Parallax sells the 32-bit uM-FPU version 3.1. That would be a good start. Most of the code is transferable from v3.1 to v64.

    Between 4.7 and 10 uF any good quality tantalum or ceramic will do. (According to manual.)

    Cheers,

    Istvan
  • Duane DegnDuane Degn Posts: 10,588
    edited 2011-11-12 17:39
    roughwood wrote: »
    I'm very interested in using this! Is there a recommended place to get this chip from?

    It looks like you can buy them directly from Micromega ($24.95 each). There is a $15 shipping fee.

    I'd think they'd be showing up at Parallax or SparkFun soon.

    Thank you Istvan for writting this object. I look forward to buying a chip and trying it out.

    Duane
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