WireI2C Class Reference

I2CInterface implementation that delegates to the Arduino Wire library. More...

#include <WireI2C.h>

Inheritance diagram for WireI2C:

Public Member Functions
	WireI2C ()
void	begin () override
	Initialize the I2C bus by calling Wire.begin().
void	writeRegister (uint8_t addr, uint8_t reg, uint8_t val) override
	Write val to register reg on device at 7-bit address addr.
void	writeByte (uint8_t addr, uint8_t data) override
	Write a single data byte to a device (no register address byte).
Public Member Functions inherited from I2CInterface
virtual	~I2CInterface ()

Detailed Description

I2CInterface implementation that delegates to the Arduino Wire library.

Create one instance per I2C bus and pass a pointer to MCP23017Driver.

WireI2C bus;
MCP23017Driver gpio(&bus, 0x20, myMapper);

Constructor & Destructor Documentation

WireI2C()

WireI2C::WireI2C ( )

inline

Member Function Documentation

begin()

void WireI2C::begin ( )

overridevirtual

Initialize the I2C bus by calling Wire.begin().

No-op on host builds.

Reimplemented from I2CInterface.

writeByte()

void WireI2C::writeByte ( uint8_t  addr, uint8_t  data  )

overridevirtual

Write a single data byte to a device (no register address byte).

Used by TCA9548AInterface to select a mux channel with a bare one-byte control word. Sequence: beginTransmission → write(data) → endTransmission. No-op on host builds (MockI2C test path uses the I2CInterface default).

Parameters

[in]	addr	7-bit I2C device address.
[in]	data	Control byte to write.

Reimplemented from I2CInterface.

writeRegister()

void WireI2C::writeRegister ( uint8_t  addr, uint8_t  reg, uint8_t  val  )

overridevirtual

Write val to register reg on device at 7-bit address addr.

Sequence: beginTransmission → write(reg) → write(val) → endTransmission. No-op on host builds.

Parameters

[in]	addr	7-bit I2C device address.
[in]	reg	Register index.
[in]	val	Byte to write.

Implements I2CInterface.

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The documentation for this class was generated from the following files:

• src/drivers/WireI2C.h
• src/drivers/WireI2C.cpp