SD or SPI mode

[Sergiv]

As a type of connection is used for SD card? SPI or SD node?

 

[StephanieA]

Hello,

I'm a little confused about the question. My assumption is that you are asking about the protocol used for File I/O on ARM. If I am mistaken, please let me know.

File I/O will use SPI. This could cause some potential problems if you using the OLED and writing to file at the same time.This KB gives you all the information you need and verifies that File I/O uses SPI lines.

LabVIEW for ARM and Using the OLED and MicroSD Card Reader on the Luminary Board

[Sergiv]

thank you ! ' File I/O will use SPI. ' I wanted to know. do not tell you how to connect to the LPC2468 SD card ?

[StephanieA]

I'm glad I could help. Although I'm a bit confused about the 'do not tell you how to connect to the LPC2468 SD card.' On the board there should be a SD reader that you can connect the SD card to.Or is it that you've done this, and are trying to communicate with the card?

[Sergiv]

I use the debug board with LPC2468, her no card reader. but there is a loose pins, which can connect to the sd card

[Sergiv]

if SPI is used to work with the sd card, then why on MCB2400 used SD mode connection to the SD card?

[StephanieA]

I will say that I am not familiar with the LPC2468 pinouts. If there is a manual, I would recommend you look at it for instructions on how to connect the SD card.

As for the second question, where did you find information that the MCB2400 uses SD Mode?

[Sergiv]

this scheme is based on the MCB2400 LPC2468 - mcb2400-oem-schematics.pdf options for connecting an SD card - sdcard_appnote_foust.pdf

how to connect the sd card to lpc2468 (sd or spi mode)?

[Sergiv]

this is the right connection for use with SD card?

[StephanieA]

That schematic looks like a good thing to try. I personally have not wired up a board like this, nor do I have one to test it out. The best I can say is to try it out and let us know how it goes.