usbd sdcard I use the example from sdk15（usb msc）and have some problems

RE: usbd sdcard I use the example from sdk15（usb msc）and have some problems

ovrebekk — Wed, 11 Jul 2018 12:46:27 GMT

You should be able to access the SD card locally when the USB link is removed, that is correct.

Is this what you are trying to do?

Best regards
Torbjørn

RE: usbd sdcard I use the example from sdk15（usb msc）and have some problems

syc776 — Wed, 11 Jul 2018 01:59:05 GMT

Can you help me? Did you read my message?

RE: usbd sdcard I use the example from sdk15（usb msc）and have some problems

syc776 — Mon, 09 Jul 2018 10:18:46 GMT

thanks for your reply now i have another probllem

when detect usb is present change usb mode,at this time i can not operate for sdcard(from fat32 mcu),

when i need to operate sdcard ,i can remove usb

like this is ok?

RE: usbd sdcard I use the example from sdk15（usb msc）and have some problems

Turbo J — Mon, 09 Jul 2018 10:00:03 GMT

Both at the same time is impossible, because they won't "see" each other's changes properly. FatFS only works when it has FULL control over the filesystem - and the PC has the same limitation.

These inconsistencies may or may not be the cause of your hard faults -impossible to tell without looking at your source code.