Purpose: Physical terminal numbers for each package.

Namespace: atmega328p::package

Each package has a Terminal enum. The enum values are terminal numbers, so they can be used directly without static_cast.

#define MCU_PACKAGE_PDIP28
#include <atmega328p/PackagePins.h>
 
namespace mcu = atmega328p;
 
static_assert(mcu::package::pdip28::PB5 == 19, "PDIP-28 PB5");
static_assert(mcu::package::pdip28::PC6 == 1, "PDIP-28 PC6");

For code that uses the selected package, use mcu::package::selected::PB5.

Logical pin identifiers in Pin.h are independent of physical package terminals. ADC6 and ADC7 are bonded out only in the 32-terminal packages.