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Forum Index : Microcontroller and PC projects : SD Card and SnadPic

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palcal

Guru

Joined: 12/10/2011
Location: Australia
Posts: 1997

Posted: 10:00pm 29 Oct 2015

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The advanced manual has instructions on how to use the SD card with the SnadPic board and the reconfig. of the CD pin. This done I get a message 'cannot access the SD card'. On further investigation the card data and clock pins are supposed to be connected to Pins 5 ,4 and 47 however on the SnadPic board they are connected to
Pins 10, 11 and 12. (pg. 10 of the SnadPic manual, which I have confirmed.
Where to from here?

Paul.

Edit I think I may be looking at connections to the 64 pinner, 10,11,12 on the 100 pinner are SPI 2 so maybe this is not my problem.

Edit.
Disregard my ramblings I think I try and do things too quickly.
IT HELPS TO FORMAT THE #@%*+#$!Y CARD.

Paul.Edited by palcal 2015-10-31

"It is better to be ignorant and ask a stupid question than to be plain Stupid and not ask at all"

WhiteWizzard
Guru

Joined: 05/04/2013
Location: United Kingdom
Posts: 2948

Posted: 11:57pm 29 Oct 2015

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If you still have problems after formatting the SD card then can I suggest that you set the MM with just the appropriate CS pin only (OPTION SDCARD cs i.e. no card-detect or write-protect pin parameters). This will then confirm comms with the SD card is working correctly (and formatted correctly!).

IF you have OPTION SDCARD cs,CD then the CD pin needs to see a 'low' (when the card is inserted) otherwise you will see the above message. This has caught me out many times (when sitting in front of multiple set-ups) as the CD pin is pulled high by the firmware.

Good luck . . . .

WW

Grogster

Admin Group

Joined: 31/12/2012
Location: New Zealand
Posts: 9643

Posted: 04:49am 30 Oct 2015

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palcal said Edit.
Disregard my ramblings I think I try and do things too quickly.
IT HELPS TO FORMAT THE #@%*+#$!Y CARD.

Yeah, that might have something to do with it!

Smoke makes things work. When the smoke gets out, it stops!

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