topic Re: SDXC LPC4357 in LPC Microcontrollers

SDXC LPC4357

lilipeeeee — Tue, 12 Mar 2024 08:24:46 GMT

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 :

Thanks

ZhangJennie — Mon, 18 Mar 2024 06:40:21 GMT

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 — Thu, 14 Mar 2024 02:08:17 GMT

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

lilipeeeee — Thu, 14 Mar 2024 02:11:25 GMT

Thank you for your help!

lilipeeeee — Thu, 14 Mar 2024 02:11:47 GMT

Thank you for your help

ZhangJennie — Thu, 14 Mar 2024 06:13:06 GMT

What's your IDE and version?

Which verion of lpcopen works under your IDE?

lilipeeeee — Thu, 14 Mar 2024 06:34:50 GMT

I use KeilV5.34 , verion : lpcopen3_02

lilipeeeee — Thu, 14 Mar 2024 06:54:43 GMT

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

ZhangJennie — Mon, 18 Mar 2024 06:43:56 GMT

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 — Mon, 18 Mar 2024 06:54:25 GMT

Thanks！