Problem with SDHC card 4 bits

Created Mon, 04 Feb 2013 13:39:39 +0000 by jbcard

jbcard

Mon, 04 Feb 2013 13:39:39 +0000

Hello,

I can not run a micro SD card SDHC 4 Gb sandDisk. I use pins 8 cs, 10-13 but the card is not recognized with cardinfo. Is that this card is recognized in the library SD? Is read/write mode 4 bits it is planned in a future extension library ?

John

pito

Tue, 05 Feb 2013 20:15:00 +0000

Do you mean an SDIO interface? Pic32 chips do not support that currently..

EmbeddedMan

Wed, 06 Feb 2013 17:06:02 +0000

Does Arduino? I don't know of any lower cost micros that do support that interface (in hardware anyway).

*Brian

pito

Thu, 07 Feb 2013 00:11:36 +0000

stm32f407 does for example.. not sure it is a low cost micro, though :)

EmbeddedMan

Thu, 07 Feb 2013 01:39:32 +0000

Yeah, 168Mhz, $10 (cheapest single qty price), it's not quite an AVR, and it's a step up from a PIC32 as well. But maybe the next family of PIC32s will have a nice 4-bit SD port - that would be cool.

*Brian

Jacob Christ

Thu, 07 Feb 2013 14:44:54 +0000

I think using that 4-bit port on an sd card requires paying royalties to Microsoft, but if it was added to a processor Microchip could pay and pass cost on to users like they do with there haptic feedback parts.

That would be cool. Being able to use 4bit interface as a little guy and not having to worry about M$ because M€ paid the bill.

Jacob