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Memory Stick Datalogger 27937 SPI mode — Parallax Forums

Memory Stick Datalogger 27937 SPI mode

bayuprioritybayupriority Posts: 2
edited 2013-04-09 00:57 in Learn with BlocklyProp
hi everyone,
im having problem with Memory Stick Datalogger 27937.
now im working with microcontroller atmega32 and im using code vision AVR.
i want to create file .txt from the microcontroller to the flash disk via Memory Stick Datalogger 27937.

i use SPI mode between datalogger and microcontroller,
and now i got little dizzy because i dont find any information abaout D7-D0 like the picture below (red circle) on datasheet.
please help me to find the answer, thank you :)

Timing.jpg
Timing.jpg
746 x 311 - 51K

Comments

  • LoopyBytelooseLoopyByteloose Posts: 12,537
    edited 2013-04-08 05:26
    D7 through D0 are just the data bits of one byte, with the highest bit, D7 going first. You are sending the data serialized over the SPI one byte at a time, but there is always the possibility of some confusion about D0 or D7 going first.

    The diagram shows how all the signals related to SPI are expected to interact.
  • bayuprioritybayupriority Posts: 2
    edited 2013-04-09 00:57
    Loopy Byteloose wrote: »
    D7 through D0 are just the data bits of one byte, with the highest bit, D7 going first. You are sending the data serialized over the SPI one byte at a time, but there is always the possibility of some confusion about D0 or D7 going first.

    The diagram shows how all the signals related to SPI are expected to interact.

    thank you for your answer loopy,
    so D7-D0 just the data bits? how about the address?
    honestly, it is my first time using datalogger. have you any link or something about this datalogger?
    i have read the pdf but i could not find the answer
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