stm32F4discovery usb problem

[mohamedgl2003]

Posted on June 01, 2013 at 17:05

I have implemented the code of this link

http://www.st.com/web/en/catalog/tools/FM116/SC959/SS1532/PF252419

that allows sending and receiving a file from a flash drive via the usb stm .. but the problem is that an indication in the code tells me that if the red LED flashes one of infinitely these problems exist (USB key disconnected, binary file not available or FATFS file system error), my red LED flashes infinitely malgrés the flash is connected and formatted (FAT) and I put the two files .bin necessary for the  download.  and upload ..

[Tesla DeLorean]

Posted on June 01, 2013 at 22:24

If you don't understand what's going wrong you'll need to add more diagnostic and telemetry output, and do some debugging.

[mohamedgl2003]

Posted on June 03, 2013 at 06:16

    my flash is connected and the green LED next to the USB port is on ... so normally the problem is either binary file not available or FATFS file system error...