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Data storage

aridaiosaridaios Posts: 57
edited 2006-02-11 19:34 in BASIC Stamp
Dear friends,

I need to use a data storage device with a RTC.
As I was looking for help on the web I found a product from Rogue Robotics, (http://www.roguerobotics.com/products/electronics/ummc)
- uMMC Serial Data Module .
It seems as a good solution for my needs.
Does·anyone have any example code that could help me?

Thank you friends

Michael

Comments

  • Bruce BatesBruce Bates Posts: 3,045
    edited 2006-02-09 15:07
    Michael -

    Unless you're looking for a large amount of removable memory for storage, most chip manufacturers who make RTC chips realize that there will be some users who need to store a limited amount of information in non-volatile memory. Due to that need, they make RTC chips with memory on board. I suspect the uMMC may a bit of overkill, and costly overkill at that.

    Regards,

    Bruce Bates

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  • aridaiosaridaios Posts: 57
    edited 2006-02-09 15:57
    ·Bruce,



    My project is a wind data logger. The amount of data is large·and I intent to replace the memory card

    every some time for data processing in the office. That's why I am looking for example code for this product

    Regards

    Michael
  • Jon WilliamsJon Williams Posts: 6,491
    edited 2006-02-09 16:13
    Michael,

    You should contact the folks at Rogue, they're very nice. I worked with the mMP3 player and found that it worked well and when I had questions they were quick to answer them.

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    Jon Williams
    Applications Engineer, Parallax
  • Bruce BatesBruce Bates Posts: 3,045
    edited 2006-02-09 16:22
    Michael -

    You should be able to adapt the code found here:
    http://www.roguerobotics.com/node/71

    Any further questions should probably be directed to that Rogue Robotics Forum, since that device is not supported by Parallax.

    Regards,

    Bruce Bates

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  • aridaiosaridaios Posts: 57
    edited 2006-02-09 19:51
    Thanks Bruce,

    I will start with this example and then contact Rogue Robotics.



    Michael
  • NewzedNewzed Posts: 2,503
    edited 2006-02-10 23:17
    I have a dandy little storage device with an RTC.· It is built as a piggyback (plugs in under the Stamp) and has a DS1302 on one side of the board and an AT45DB041 EEPROM on the other side.· The EEPROM will store 2048 pages of 264 bytes per page.· When writing long bursts of data the 264-byte buffer is automatically written to the main memory, clears itself and then starts over.· If the data burst is less than 264 bytes, upon completion of the burst the buffer is automatically written to main memory.· A max of 12 bytes can be written to the EEPROM, which includes hours minutes and seconds from the RTC.· Works great.·

    The 12-byte limitation is due to the amount of variable RAM in a Stamp.

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    Sid Weaver
    Do you have a Stamp Tester yet?
    http://hometown.aol.com/newzed/index.html

    ·
  • aridaiosaridaios Posts: 57
    edited 2006-02-11 05:41
    It·would be right for me but I definately need a MMC/SD card to store my data in.

    Thanks
    Michael·
  • BobNBobN Posts: 11
    edited 2006-02-11 19:34
    If you are going to be creating your own PCB, then perhaps take a look at:

    http://www.ghielectronics.com/index.htm

    They have both the Alfat and soon to be uAlfat that may work for you.

    Cheers,

    - Bob -
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