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can use BS2 to drive flash memory ??? — Parallax Forums

can use BS2 to drive flash memory ???

YHYYHY Posts: 3
edited 2007-08-29 20:48 in BASIC Stamp
I want to use BS2 and eb500 to send data.
The data in the flash memory.
The flash memory is an external device.


My question：
Can use·BS2 to·drive the flash memory then access data through·the computer ?!?!
I don't know this idea may or may not realize.


Hope someone can·help me.
give me some suggestions.
Thanks a lot.
·

Comments

  • allanlane5allanlane5 Posts: 3,815
    edited 2007-08-29 13:32
    No, the USB protocol requires a 'master' and a 'slave' device. The complexity of the 'master' device requires a PC with a hard disk -- though people are working on this part of the solution.

    In any event, currently a BS2 cannot be a USB 'master' device, so you can't directly read or write a USB Flash Memory module this way.

    However, you CAN use the computer to access the USB Flash memory, then send to the BS2 from the computer.
  • Mike GreenMike Green Posts: 23,101
    edited 2007-08-29 13:55
    Actually, the Parallax Data Logger might be able to do this for you. It's a device that can act as a USB host and can access data on a USB flash drive. It's usable with a Stamp ... There are example programs on the Parallax webstore page for it. Have a look.
  • BeanBean Posts: 8,129
    edited 2007-08-29 14:01
    I'm with Mike. Here is the link http://www.parallax.com/detail.asp?product_id=27937

    Bean.

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  • NewzedNewzed Posts: 2,503
    edited 2007-08-29 16:35
    Mike, will the Data Logger work with my Cruzer mini 128Mb SanDisk?

    Sid

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  • pwillardpwillard Posts: 321
    edited 2007-08-29 17:11
    Has anyone had success with the FTDI Viniculum chipset products? IE: VDRIVE?

    http://www.vinculum.com/prd_vdrive1.html

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    There's nothing like a new idea and a warm soldering iron.
  • UnsoundcodeUnsoundcode Posts: 1,532
    edited 2007-08-29 17:18
    pwillard, I have the Vdrive 2 and Stamp communicating quite happily, although I don't have the Parallax logger as of now I believe they operate with the same commands.

    They provide a large amount of storage (to 4G) and allow for many applications where the EEPROM is just not large enough. Such as·databases for RFID or barcodes for example.

    Jeff T.
  • Mike GreenMike Green Posts: 23,101
    edited 2007-08-29 17:25
    Newzed,
    The data logger (and any Vinculum chip based device) should work with any USB flash memory drive, for that matter you can plug in a USB hard disk and it should work ... any device that works like a "mass storage device" as far as USB is concerned. The only concern is size ... The Vinculum only works with FAT16 so devices larger than 4GB (I think) are not usable currently.
  • allanlane5allanlane5 Posts: 3,815
    edited 2007-08-29 20:48
    Wow! Well, there you go, I did not know that had been released. Way to go Parallax!
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