When I plug the usb cable in the FRDM K22 in a linux environment, the status led becomes being on , and the folder MBED become available. But when I try to copy the .bin file to the virtual disk call MBED , the status led flashes and the GREEN led turns on, but after the copy done, the MBED becomes disconnected and then reconnected , but the copyed .bin file vanished. and the GREEN led still is on. Who can explain the meaning of green LED being on.
In that situation , I even can not download any .bin files into the ARM flash and get it running. and when i try to update the bootloader files in the bootloader folder, the same thing happens, which means it is impossible to upgrade the bootloader.
Experienced environment : Linux 4.12.11, K22 openSDA 2.1 , cmsis-dap v100