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bug in HAL_USB

Question asked by khan.daynial on Mar 16, 2017

I am using STM32Cube_FW_F4_V1.14.0 for USB as a device to store data. USB works fine in the start. I receives data from UART2 and save it on usb continuously. after some time complete system get hung and then become normal. after which I got the error form f_write that is (FR_DISK_ERR OR FR_LOCKED) i am still not able to get the matter. is it a BUG or any other problem   

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