I am using an Alfat oem board version 1.3 with the firmware version 1.0.8
i use an I2c comunication mode
I find some errors when i try write to usb mass storage devices, with M command.
The problem is the actual sized copied returned by the M command do not match with the data to be copied, When this happen i can not close the handle of the destiantion file, and every command i try to send to USb mass storage respond error code 0x03.
The issue not hapened every time i use a M command.