secured chip erase using openocd

Development Boards MicroMod
1

Hi all,

Now I am working with a project.

I am using openocd with ftdi debugger(ft2232h) and ATSAMC20 controller.

I secures the Flash via the Set Security Bit (SSB) command : at91samd set-security

How to erase a secured chip using openocd with ftdi.?

i tried at91samd chip-erase command, but not work.

please help me.