Data Structures
class	ModbusBinaryOutput

class	ModbusBinarySensor

class	ModbusCommandItem

class	ModbusController
	Modbus controller class. More...

class	ModbusFloatOutput

class	ModbusNumber

class	ModbusSelect

class	ModbusSensor

class	ModbusSwitch

class	ModbusTextSensor

struct	RegisterRange

class	SensorItem

class	SensorItemsComparator

Typedefs
using	SensorSet = std::set< SensorItem *, SensorItemsComparator >

using	value_to_data_t = std::function< float >(float)

Enumerations
enum	ModbusFunctionCode { ModbusFunctionCode::CUSTOM = 0x00, ModbusFunctionCode::READ_COILS = 0x01, ModbusFunctionCode::READ_DISCRETE_INPUTS = 0x02, ModbusFunctionCode::READ_HOLDING_REGISTERS = 0x03, ModbusFunctionCode::READ_INPUT_REGISTERS = 0x04, ModbusFunctionCode::WRITE_SINGLE_COIL = 0x05, ModbusFunctionCode::WRITE_SINGLE_REGISTER = 0x06, ModbusFunctionCode::READ_EXCEPTION_STATUS = 0x07, ModbusFunctionCode::DIAGNOSTICS = 0x08, ModbusFunctionCode::GET_COMM_EVENT_COUNTER = 0x0B, ModbusFunctionCode::GET_COMM_EVENT_LOG = 0x0C, ModbusFunctionCode::WRITE_MULTIPLE_COILS = 0x0F, ModbusFunctionCode::WRITE_MULTIPLE_REGISTERS = 0x10, ModbusFunctionCode::REPORT_SERVER_ID = 0x11, ModbusFunctionCode::READ_FILE_RECORD = 0x14, ModbusFunctionCode::WRITE_FILE_RECORD = 0x15, ModbusFunctionCode::MASK_WRITE_REGISTER = 0x16, ModbusFunctionCode::READ_WRITE_MULTIPLE_REGISTERS = 0x17, ModbusFunctionCode::READ_FIFO_QUEUE = 0x18 }

enum	ModbusRegisterType : uint8_t { ModbusRegisterType::CUSTOM = 0x0, ModbusRegisterType::COIL = 0x01, ModbusRegisterType::DISCRETE_INPUT = 0x02, ModbusRegisterType::HOLDING = 0x03, ModbusRegisterType::READ = 0x04 }

enum	SensorValueType : uint8_t { SensorValueType::RAW = 0x00, SensorValueType::U_WORD = 0x1, SensorValueType::U_DWORD = 0x2, SensorValueType::S_WORD = 0x3, SensorValueType::S_DWORD = 0x4, SensorValueType::BIT = 0x5, SensorValueType::U_DWORD_R = 0x6, SensorValueType::S_DWORD_R = 0x7, SensorValueType::U_QWORD = 0x8, SensorValueType::S_QWORD = 0x9, SensorValueType::U_QWORD_R = 0xA, SensorValueType::S_QWORD_R = 0xB, SensorValueType::FP32 = 0xC, SensorValueType::FP32_R = 0xD }

enum	RawEncoding { RawEncoding::NONE = 0, RawEncoding::HEXBYTES = 1, RawEncoding::COMMA = 2 }

Functions
void	number_to_payload (std::vector< uint16_t > &data, int64_t value, SensorValueType value_type)
	Convert float value to vector<uint16_t> suitable for sending. More...

int64_t	payload_to_number (const std::vector< uint8_t > &data, SensorValueType sensor_value_type, uint8_t offset, uint32_t bitmask)
	Convert vector<uint8_t> response payload to number. More...

ModbusFunctionCode	modbus_register_read_function (ModbusRegisterType reg_type)

ModbusFunctionCode	modbus_register_write_function (ModbusRegisterType reg_type)

uint8_t	c_to_hex (char c)

uint8_t	byte_from_hex_str (const std::string &value, uint8_t pos)
	Get a byte from a hex string hex_byte_from_str("1122",1) returns uint_8 value 0x22 == 34 hex_byte_from_str("1122",0) returns 0x11. More...

uint16_t	word_from_hex_str (const std::string &value, uint8_t pos)
	Get a word from a hex string. More...

uint32_t	dword_from_hex_str (const std::string &value, uint8_t pos)
	Get a dword from a hex string. More...

uint64_t	qword_from_hex_str (const std::string &value, uint8_t pos)
	Get a qword from a hex string. More...

template<typename T >
T	get_data (const std::vector< uint8_t > &data, size_t buffer_offset)
	Extract data from modbus response buffer. More...

bool	coil_from_vector (int coil, const std::vector< uint8_t > &data)
	Extract coil data from modbus response buffer Responses for coil are packed into bytes . More...

template<typename N >
N	mask_and_shift_by_rightbit (N data, uint32_t mask)
	Extract bits from value and shift right according to the bitmask if the bitmask is 0x00F0 we want the values frrom bit 5 - 8. More...

float	payload_to_float (const std::vector< uint8_t > &data, const SensorItem &item)
	Convert vector<uint8_t> response payload to float. More...

std::vector< uint16_t >	float_to_payload (float value, SensorValueType value_type)

Typedef Documentation

◆ SensorSet

using esphome::modbus_controller::SensorSet = typedef std::set<SensorItem *, SensorItemsComparator>

Definition at line 285 of file modbus_controller.h.

◆ value_to_data_t

using esphome::modbus_controller::value_to_data_t = typedef std::function<float>(float)

Definition at line 12 of file modbus_number.h.

Enumeration Type Documentation

◆ ModbusFunctionCode

enum esphome::modbus_controller::ModbusFunctionCode

strong

Enumerator
CUSTOM
READ_COILS
READ_DISCRETE_INPUTS
READ_HOLDING_REGISTERS
READ_INPUT_REGISTERS
WRITE_SINGLE_COIL
WRITE_SINGLE_REGISTER
READ_EXCEPTION_STATUS
DIAGNOSTICS
GET_COMM_EVENT_COUNTER
GET_COMM_EVENT_LOG
WRITE_MULTIPLE_COILS
WRITE_MULTIPLE_REGISTERS
REPORT_SERVER_ID
READ_FILE_RECORD
WRITE_FILE_RECORD
MASK_WRITE_REGISTER
READ_WRITE_MULTIPLE_REGISTERS
READ_FIFO_QUEUE

Definition at line 18 of file modbus_controller.h.

◆ ModbusRegisterType

enum esphome::modbus_controller::ModbusRegisterType : uint8_t

strong

Enumerator
CUSTOM
COIL
DISCRETE_INPUT
HOLDING
READ

Definition at line 40 of file modbus_controller.h.

◆ RawEncoding

enum esphome::modbus_controller::RawEncoding

strong

Enumerator
NONE
HEXBYTES
COMMA

Definition at line 12 of file modbus_textsensor.h.

◆ SensorValueType

enum esphome::modbus_controller::SensorValueType : uint8_t

strong

Enumerator
RAW
U_WORD
U_DWORD
S_WORD
S_DWORD
BIT
U_DWORD_R
S_DWORD_R
U_QWORD
S_QWORD
U_QWORD_R
S_QWORD_R
FP32
FP32_R

Definition at line 48 of file modbus_controller.h.

Function Documentation

◆ byte_from_hex_str()

uint8_t esphome::modbus_controller::byte_from_hex_str	(	const std::string &	value,
		uint8_t	pos
	)

inline

Get a byte from a hex string hex_byte_from_str("1122",1) returns uint_8 value 0x22 == 34 hex_byte_from_str("1122",0) returns 0x11.

Parameters

value	string containing hex encoding
position	offset in bytes. Because each byte is encoded in 2 hex digits the position of the original byte in the hex string is byte_pos * 2

Returns: byte value

Definition at line 112 of file modbus_controller.h.

◆ c_to_hex()

uint8_t esphome::modbus_controller::c_to_hex ( char c )

inline

Definition at line 102 of file modbus_controller.h.

◆ coil_from_vector()

bool esphome::modbus_controller::coil_from_vector	(	int	coil,
		const std::vector< uint8_t > &	data
	)

inline

Extract coil data from modbus response buffer Responses for coil are packed into bytes .

coil 3 is bit 3 of the first response byte coil 9 is bit 2 of the second response byte

Parameters

coil	number of the cil
data	modbus response buffer (uint8_t)

Returns: content of coil register

Definition at line 181 of file modbus_controller.h.

◆ dword_from_hex_str()

uint32_t esphome::modbus_controller::dword_from_hex_str	(	const std::string &	value,
		uint8_t	pos
	)

inline

Get a dword from a hex string.

Parameters

value	string containing hex encoding
position	offset in bytes. Because each byte is encoded in 2 hex digits the position of the original byte in the hex string is byte_pos * 2

Returns: dword value

Definition at line 134 of file modbus_controller.h.

◆ float_to_payload()

std::vector<uint16_t> esphome::modbus_controller::float_to_payload	(	float	value,
		SensorValueType	value_type
	)

inline

Definition at line 489 of file modbus_controller.h.

◆ get_data()

template<typename T >

T esphome::modbus_controller::get_data	(	const std::vector< uint8_t > &	data,
		size_t	buffer_offset
	)

Extract data from modbus response buffer.

Parameters

T	one of supported integer data types int_8,int_16,int_32,int_64
data	modbus response buffer (uint8_t)
buffer_offset	offset in bytes.

Returns: value of type T extracted from buffer

Definition at line 155 of file modbus_controller.h.

◆ mask_and_shift_by_rightbit()

template<typename N >

N esphome::modbus_controller::mask_and_shift_by_rightbit	(	N	data,
		uint32_t	mask
	)

Extract bits from value and shift right according to the bitmask if the bitmask is 0x00F0 we want the values frrom bit 5 - 8.

the result is then shifted right by the position if the first right set bit in the mask Useful for modbus data where more than one value is packed in a 16 bit register Example: on Epever the "Length of night" register 0x9065 encodes values of the whole night length of time as D15 - D8 = hour, D7 - D0 = minute To get the hours use mask 0xFF00 and 0x00FF for the minute

Parameters

data	an integral value between 16 aand 32 bits,
bitmask	the bitmask to apply

Definition at line 196 of file modbus_controller.h.

◆ modbus_register_read_function()

ModbusFunctionCode esphome::modbus_controller::modbus_register_read_function ( ModbusRegisterType reg_type )

inline

Definition at line 65 of file modbus_controller.h.

◆ modbus_register_write_function()

ModbusFunctionCode esphome::modbus_controller::modbus_register_write_function ( ModbusRegisterType reg_type )

inline

Definition at line 84 of file modbus_controller.h.

◆ number_to_payload()

void esphome::modbus_controller::number_to_payload	(	std::vector< uint16_t > &	data,
		int64_t	value,
		SensorValueType	value_type
	)

Convert float value to vector<uint16_t> suitable for sending.

Parameters

data	target for payload
value	float value to convert
value_type	defines if 16/32 or FP32 is used

Returns: vector containing the modbus register words in correct order

Definition at line 523 of file modbus_controller.cpp.

◆ payload_to_float()

float esphome::modbus_controller::payload_to_float	(	const std::vector< uint8_t > &	data,
		const SensorItem &	item
	)

inline

Convert vector<uint8_t> response payload to float.

Parameters

data	payload with data
item	SensorItem object

Returns: float value of data

Definition at line 476 of file modbus_controller.h.

◆ payload_to_number()

int64_t esphome::modbus_controller::payload_to_number	(	const std::vector< uint8_t > &	data,
		SensorValueType	sensor_value_type,
		uint8_t	offset,
		uint32_t	bitmask
	)

Convert vector<uint8_t> response payload to number.

Parameters

data	payload with the data to convert
sensor_value_type	defines if 16/32/64 bits or FP32 is used
offset	offset to the data in data
bitmask	bitmask used for masking and shifting

Returns: 64-bit number of the payload

Definition at line 562 of file modbus_controller.cpp.

◆ qword_from_hex_str()

uint64_t esphome::modbus_controller::qword_from_hex_str	(	const std::string &	value,
		uint8_t	pos
	)

inline

Get a qword from a hex string.

Parameters

value	string containing hex encoding
position	offset in bytes. Because each byte is encoded in 2 hex digits the position of the original byte in the hex string is byte_pos * 2

Returns: qword value

Definition at line 144 of file modbus_controller.h.

◆ word_from_hex_str()

uint16_t esphome::modbus_controller::word_from_hex_str	(	const std::string &	value,
		uint8_t	pos
	)

inline

Get a word from a hex string.

Parameters

value	string containing hex encoding
position	offset in bytes. Because each byte is encoded in 2 hex digits the position of the original byte in the hex string is byte_pos * 2

Returns: word value

Definition at line 124 of file modbus_controller.h.

Data Structures

Typedefs

Enumerations

Functions

Typedef Documentation

◆ SensorSet

◆ value_to_data_t

Enumeration Type Documentation

◆ ModbusFunctionCode

◆ ModbusRegisterType

◆ RawEncoding

◆ SensorValueType

Function Documentation

◆ byte_from_hex_str()

◆ c_to_hex()

◆ coil_from_vector()

◆ dword_from_hex_str()

◆ float_to_payload()

◆ get_data()

◆ mask_and_shift_by_rightbit()

◆ modbus_register_read_function()

◆ modbus_register_write_function()

◆ number_to_payload()

◆ payload_to_float()

◆ payload_to_number()

◆ qword_from_hex_str()

◆ word_from_hex_str()