RCM5700/5600W and SD card

Rabbit
1

Hi,

I am new to RCM. I need to use SD card and FAT file system on RCM5700.

How should I interface my SD card board (with CS, SDI, SDO, SCK, CD, WD pins) to the RCM5700?

??? Write detect WD
??? CS
??? CD
PB0 PB0_SCLKB SCK
PC4 PC4_TXB SDI
PC5 PC5_RXB SD0

From the RCM4300 schematics I could see:
RCM4300 to sd card interface:
TXDD+ SD_POWEN Power to SD
TXD+ SD_CS CS
TXD- SD_LED LED indicator
RXD+ SD_DET Card detect CD
PB0 PB0_SCLKB SCK
PC4 PC4_TXB SDI
PC5 PC5_RXB SD0

Which parts of the sdflash.lib, fat_config.lib should I change make it work?

Thank you.

Regards,
Luke

2

I don’t know about the electrical connections and the changes required to the libs but I do recall that you need some amount of battery backed RAM to run the FAT file system properly.

Regards,
Peter

3

Thanks Peter for your information. Digi also provided me with the same info.

I still need help on the h/w interface and modification in the libs.

Regards,
Luke

4

The best help you can get is to see the chapter “B.1 Adding SD Card Interface” of the attached pdf