Purpose: Memory protection and bootloader lock bit positions.

Namespace: atmega2560::lock_bits.

#include <atmega2560/LockBits.h>
 
namespace mcu = atmega2560;
 
static_assert(static_cast<unsigned>(mcu::lock_bits::Bit::BLB12) == 5, "ATmega2560 LockBits definition");

These are hardware definitions, not runtime register access or initialization.

Source: ATmega2560 datasheet (DS40002211A).