Module i2c 

I2C device addressing per the NXP I2C-bus specification (UM10204).

An I2C transfer begins with the controller sending the device’s address. The exact bytes are pinned down by the specification, and they are easy to get subtly wrong: the 7-bit address shares its byte with the read/write bit, so the value a datasheet prints is not the byte that goes on the wire, and the 10-bit extension spends a reserved prefix and spreads its bits across two bytes. This module builds those bytes exactly and rejects an address that is out of range or, on request, one the specification reserves.

Structs

Address

An I2C device address, 7-bit or 10-bit, validated to its range.

AddressFrame

The bytes an Address puts on the bus to address a device.

Enums

Direction

Whether an I2C transfer reads from or writes to the device.

Constants

RESERVED_BELOW

The first 7-bit address above the reserved block at the bottom of the range.

RESERVED_FROM

The lowest 7-bit address the specification keeps for itself.