USB MSC Using SDCARD

[Alihussain Vohra]

I am using stm32f072rb discovery board. I am connecting memory card using SPI. I want to use USB MSC and want to see the SDCard data on PC. How can I do that? I used the USB_MSC_Standalone example but not working. I am attaching the code. The disk is not showing on windows but usb device is showing mass storage in device manager.

@Community member​ 

[Alihussain Vohra]

Now I am able to detect SD card on my android phone but not able to read on windows10. The speed of data transfer is very slow. How can I increase the speed of transfer?

[Tesla DeLorean]

SPI is likely to be quite slow, should be able to clock microsd cards between 25 to 50 MHz.

Larger sector count transfers will be more efficient.

There might be a MSC MEDIA PACKET SIZE define, plus you dont have a lot of RAM to buffer.

[Alihussain Vohra]

Thanks @Community member​ . I will update SPI to maximum clock to 24MHz and check. I have updated MSC MEDIA PACKET to 8kb but no effect is seen on Speed of transfer. Do you have any idea about why it is not detecting on windows10?