SDXC LPC4357

[lilipeeeee]

      I need the sdxc library for lpc 4357  use a 64GB sd card for my project。Does this device not support SDXC mode？？？？？

Can not open :

sdxc library for lpc 43s67

Bugreport: SD-Card on LPC18xx, LPC43xx, LPC17xx | www.LPCware.com 

Thanks

[lilipeeeee]

Thank you for your help!

[ZhangJennie]

Hi lilipeeeee,

This link no longer exists.

The bug fix is related an old version lpcopen. lpcopen v3.02 already fixes it.

in sdmmc_18xx_43xx.c there is this:

c_size = prv_get_bits(48, 63, (uint32_t *) g_card_info->card_info.csd) + 1;

To
c_size = prv_get_bits(48, 69, (uint32_t *) g_card_info->card_info.csd) + 1;

32G SD card works well with this fix.

Hope this helps,

Jun Zhang

[lilipeeeee]

Thank you for your help

[lilipeeeee]

I tested using this software version, but the result was that USB formatting failed and cannot be used

[ZhangJennie]

What's your IDE and version?

Which verion of lpcopen works under your IDE?

[lilipeeeee]

I tested using the program under this file  lpcopen3_02-----  "Periph-sdmmc" .  still can only recognize 32GB SDHC cards!

[lilipeeeee]

I use  KeilV5.34 , verion : lpcopen3_02

[ZhangJennie · Accepted solution]

HI lilipeeeee 

By checking,  LPC4357 does not support 64GB SDXC cards. The fix only works for 32GB SDHC.

Sorry for the inconvinience.

Have a nice day,

Jun Zhang

[lilipeeeee]

Thanks！