_PROTECTED_WRITE(reg, value)
Write value value
to IO register
reg
that is protected through the Xmega configuration
change protection (CCP) mechanism. This implements the timed sequence that is required
for CCP.
#include <avr/io.h> _PROTECTED_WRITE(CLK_PSCTRL, CLK_PSADIV0_bm); _PROTECTED_WRITE(CLK_CTRL, CLK_SCLKSEL0_bm);