Data Structures
class	ArduinoI2CBus

class	I2CBus
	This Class provides the methods to read and write bytes from an I2CBus. More...

class	I2CDevice
	This Class provides the methods to read/write bytes from/to an i2c device. More...

class	I2CRegister
	This class is used to create I2CRegister objects that act as proxies to read/write internal registers on an I2C device. More...

class	I2CRegister16
	This class is used to create I2CRegister16 objects that act as proxies to read/write internal registers (specified with a 16 bit address) on an I2C device. More...

class	IDFI2CBus

class	InternalI2CBus

struct	ReadBuffer
	the ReadBuffer structure stores a pointer to a read buffer and its length More...

class	SmallBufferWithHeapFallback
	Helper class for efficient buffer allocation - uses stack for small sizes, heap for large. More...

struct	WriteBuffer
	the WriteBuffer structure stores a pointer to a write buffer and its length More...

Enumerations
enum	ErrorCode { NO_ERROR = 0 , ERROR_OK = 0 , ERROR_INVALID_ARGUMENT = 1 , ERROR_NOT_ACKNOWLEDGED = 2 , ERROR_TIMEOUT = 3 , ERROR_NOT_INITIALIZED = 4 , ERROR_TOO_LARGE = 5 , ERROR_UNKNOWN = 6 , ERROR_CRC = 7 }
	Error codes returned by I2CBus and I2CDevice methods. More...

enum	RecoveryCode { RECOVERY_FAILED_SCL_LOW , RECOVERY_FAILED_SDA_LOW , RECOVERY_COMPLETED , RECOVERY_FAILED_SCL_LOW , RECOVERY_FAILED_SDA_LOW , RECOVERY_COMPLETED }

enum	RecoveryCode { RECOVERY_FAILED_SCL_LOW , RECOVERY_FAILED_SDA_LOW , RECOVERY_COMPLETED , RECOVERY_FAILED_SCL_LOW , RECOVERY_FAILED_SDA_LOW , RECOVERY_COMPLETED }

Enumeration Type Documentation

◆ ErrorCode

Error codes returned by I2CBus and I2CDevice methods.

Enumerator
NO_ERROR	No error found during execution of method.
ERROR_OK	No error found during execution of method.
ERROR_INVALID_ARGUMENT	method called invalid argument(s)
ERROR_NOT_ACKNOWLEDGED	I2C bus acknowledgment not received.
ERROR_TIMEOUT	timeout while waiting to receive bytes
ERROR_NOT_INITIALIZED	call method to a not initialized bus
ERROR_TOO_LARGE	requested a transfer larger than buffers can hold
ERROR_UNKNOWN	miscellaneous I2C error during execution
ERROR_CRC	bytes received with a CRC error

Definition at line 31 of file i2c_bus.h.

Definition at line 12 of file i2c_bus_arduino.h.

Definition at line 12 of file i2c_bus_esp_idf.h.

uint16_t esphome::i2c::htoi2cs ( uint16_t hostshort )

inline

Definition at line 129 of file i2c.h.

uint16_t esphome::i2c::i2ctohs ( uint16_t i2cshort )

inline

Definition at line 128 of file i2c.h.