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stm32F4discovery usb problem

Question asked by jacks.michael on Jun 1, 2013
Latest reply on Jun 3, 2013 by jacks.michael
I have implemented the code of this link 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 ..