TWI.h

Purpose: Two-wire interface status codes, prescalers, and bus limits.

Namespace: atmega328p::twi

The TWI module supports master and slave operation, multi-master arbitration, and general call. It uses 7-bit addressing.

#include <atmega328p/TWI.h>
 
namespace mcu = atmega328p;
 
constexpr mcu::twi::Prescaler divider = mcu::twi::Prescaler::Divide4;
constexpr mcu::twi::StatusCode start =
    mcu::twi::StatusCode::StartTransmitted;
 
static_assert(mcu::twi::standard_mode_max_hz == 100000UL, "Standard mode");
static_assert(mcu::twi::fast_mode_max_hz == 400000UL, "Fast mode");

Slave operation has additional CPU-clock requirements. The header describes those limits but does not implement bus transactions.