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Compatible SD Shield?

Started by cce1911, May 05 2013 03:53 PM

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#1 cce1911

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Posted 05 May 2013 - 03:53 PM

I purchased a Seedstudio SD shield (http://www.seeedstud...l?cPath=132_134

) but it does not appear to work. Has anyone used this shield with the Netduino?

 

If not, what shield do you suggest?

 

I need to store 18 configuration values (double) from one power up to the next...

-Capel


#2 NooM

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Posted 05 May 2013 - 08:00 PM

for 18 doubles an eeprom would be my choice.

they are cheap and easy to use.

 

for the sd shield: i dont see a reason for it not to work. you have to call storagedevice.mount() and than you can use it.

(ofc mount with the right parameters)

 

"but it does not appear to work" is no good description to really help you. post your code and what excat error you got

 

edit: also wich netduino you have, and wich sd card?  netduino is limited to <= 2gb cards


My PlayGround and some Code

#3 cce1911

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Posted 05 May 2013 - 08:15 PM

NooM,

I have the N2 with a 2gb SD card.

 

The reason I say it does not appear to work is because my app works when the I/O is connected to the N2, but when I plug in the SD shield and move all the I/O wires to it, the app will not run. Nowhere does the documentation say it is Netduino compatible, I was assuming it was when I bought it, now I'm trying to confirm this assumption. I have not written any code to read/write to the SD card, yet.

 

You can see my initial schematic here: http://forums.netdui...uttons-and-lcd/

 

I'm not familiar with eeproms, would you point me to some tutorials? I like the sound of cheap:)


#4 NooM

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Posted 06 May 2013 - 12:45 AM

sorry i dont know any tutorials, but netmf toolbox has a eeprom driver

 

i think the not working issue is becouse some of the display pins might collide with the sd shield one.

 

if you have the v3 its 3.3v compatible, the version 4 needs 5volt.

maybe you try the sd shield alone, to figure out if it works, and than add the display

 

D10 – Used for CS of SPI
D11 – Used for MOSI of SPI
D12 – Used for MISO of SPI
D13 – Used for SCK of SPI


My PlayGround and some Code

#5 cce1911

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Posted 06 May 2013 - 02:43 AM

I definitely have a conflict with the SPI pins. If I free up D10-D13 I'm 2 pins short of what I need for the project.


#6 NooM

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Posted 06 May 2013 - 04:08 AM

the display is spi too ? so it uses the same for mosi, miso and sck - but needs a different chipselect.


My PlayGround and some Code
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