Purpose: Data-space addresses of ATmega2560 peripheral registers.

Namespace: atmega2560::register_map.

These are data-space addresses (for LDS/STS), not the shorter IN/OUT instruction operands. The register table extends through 0x136.

#include <atmega2560/RegisterMap.h>
 
namespace mcu = atmega2560;
 
static_assert(mcu::register_map::UDR3 == 0x136, "ATmega2560 RegisterMap definition");
static_assert(mcu::register_map::SPMCSR == 0x57, "ATmega2560 SPMCSR address");
static_assert(mcu::register_map::TIMSK5 == 0x73, "ATmega2560 TIMSK5 address");

Corrected addresses

Register	Data-space address
SPMCSR	0x57
PCMSK0	0x6B
PCMSK1	0x6C
PCMSK2	0x6D
TIMSK0	0x6E
TIMSK1	0x6F
TIMSK2	0x70
TIMSK3	0x71
TIMSK4	0x72
TIMSK5	0x73
XMCRA	0x74
XMCRB	0x75

Addressing rules

These values use the data-space address from datasheet Section 33. For example, PORTB is 0x25 and UDR3 is 0x136.

The IN and OUT opcodes use I/O addresses; add 0x20 to the I/O address when referring to the corresponding data-space address. Extended peripheral registers require load/store instructions. This library does not issue either instruction.

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

Source: ATmega2560 datasheet (DS40002211A), Section 33.