This discussion has been locked.
You can no longer post new replies to this discussion. If you have a question you can start a new discussion

LPC23xx SDHC support

Hi everyone,

I know this is probably NXP related question, but I suppose there are many skilled guys knowing answer...

I would need to support SDHC cards on LPC2368. There is SD/MMC peripheral available. I didn't know it suppoorts also SDHC. After some research I understood the SDHC means only some more commands (comparing to SD) and thus it is only firmware related thing, so the NXP's hardware peripheral should support both types.

Is this correct assumption?
Would SDHC work when I implement SD 2.0 commands?

Thanks for opinions

Regards

Pavel Faltynek

Parents
  • When I test SDHC card(8G) in LPC17xx, I found a problem. I format the SDHC card with rlarm lib and then I check the total space of SDHC card. It just shows about 3.7G not about 8.0G but I can really save about 8.0G data in the SDHC card. The following is the message from LPC17xx after SDHC card is formatted. Does anybody know why ?

    File System Directory...
    No files...

    3,720,314,880 bytes free.

Reply
  • When I test SDHC card(8G) in LPC17xx, I found a problem. I format the SDHC card with rlarm lib and then I check the total space of SDHC card. It just shows about 3.7G not about 8.0G but I can really save about 8.0G data in the SDHC card. The following is the message from LPC17xx after SDHC card is formatted. Does anybody know why ?

    File System Directory...
    No files...

    3,720,314,880 bytes free.

Children