esphome::one_wire::OneWireBus Class Reference

#include <one_wire_bus.h>

Inheritance diagram for esphome::one_wire::OneWireBus:

Public Member Functions
virtual void	write8 (uint8_t val)=0
	Write a word to the bus. LSB first.
virtual void	write64 (uint64_t val)=0
	Write a 64 bit unsigned integer to the bus. LSB first.
void	skip ()
	Write a command to the bus that addresses all devices by skipping the ROM.
virtual uint8_t	read8 ()=0
	Read an 8 bit word from the bus.
virtual uint64_t	read64 ()=0
	Read an 64-bit unsigned integer from the bus.
bool	select (uint64_t address)
	Select a specific address on the bus for the following command.
const std::vector< uint64_t > &	get_devices ()
	Return the list of found devices.
void	search ()
	Search for 1-Wire devices on the bus.
const LogString *	get_model_str (uint8_t model)
	Get the description string for this model.

Protected Member Functions
void	dump_devices_ (const char *tag)
	log the found devices
bool	reset_ ()
	Reset the bus, should be done before all write operations.
virtual int	reset_int ()=0
	Bus Reset.
virtual void	reset_search ()=0
	Reset the device search.
virtual uint64_t	search_int ()=0
	Search for a 1-Wire device on the bus. Returns 0 if all devices have been found.

Protected Attributes
std::vector< uint64_t >	devices_

Detailed Description

Definition at line 10 of file one_wire_bus.h.

Member Function Documentation

dump_devices_()

void esphome::one_wire::OneWireBus::dump_devices_ ( const char * tag )

protected

log the found devices

Definition at line 80 of file one_wire_bus.cpp.

get_devices()

const std::vector< uint64_t > & esphome::one_wire::OneWireBus::get_devices

(

)

Return the list of found devices.

Definition at line 18 of file one_wire_bus.cpp.

get_model_str()

const LogString * esphome::one_wire::OneWireBus::get_model_str

(

uint8_t

model

)

Get the description string for this model.

Definition at line 63 of file one_wire_bus.cpp.

read64()

virtual uint64_t esphome::one_wire::OneWireBus::read64 ( )

pure virtual

Read an 64-bit unsigned integer from the bus.

Implemented in esphome::ds2484::DS2484OneWireBus, and esphome::gpio::GPIOOneWireBus.

read8()

virtual uint8_t esphome::one_wire::OneWireBus::read8 ( )

pure virtual

Read an 8 bit word from the bus.

Implemented in esphome::ds2484::DS2484OneWireBus, and esphome::gpio::GPIOOneWireBus.

reset_()

bool esphome::one_wire::OneWireBus::reset_ ( )

protected

Reset the bus, should be done before all write operations.

Takes approximately 1ms.

Returns

Whether the operation was successful.

Definition at line 20 of file one_wire_bus.cpp.

reset_int()

virtual int esphome::one_wire::OneWireBus::reset_int ( )

protectedpure virtual

Bus Reset.

Returns

-1: signal fail, 0: no device detected, 1: device detected

Implemented in esphome::ds2484::DS2484OneWireBus, and esphome::gpio::GPIOOneWireBus.

reset_search()

virtual void esphome::one_wire::OneWireBus::reset_search ( )

protectedpure virtual

Reset the device search.

Implemented in esphome::ds2484::DS2484OneWireBus, and esphome::gpio::GPIOOneWireBus.

search()

void esphome::one_wire::OneWireBus::search

(

)

Search for 1-Wire devices on the bus.

Definition at line 35 of file one_wire_bus.cpp.

search_int()

virtual uint64_t esphome::one_wire::OneWireBus::search_int ( )

protectedpure virtual

Search for a 1-Wire device on the bus. Returns 0 if all devices have been found.

Implemented in esphome::ds2484::DS2484OneWireBus, and esphome::gpio::GPIOOneWireBus.

select()

bool IRAM_ATTR esphome::one_wire::OneWireBus::select

(

uint64_t

address

)

Select a specific address on the bus for the following command.

Definition at line 27 of file one_wire_bus.cpp.

skip()

void esphome::one_wire::OneWireBus::skip

(

)

Write a command to the bus that addresses all devices by skipping the ROM.

Definition at line 59 of file one_wire_bus.cpp.

write64()

virtual void esphome::one_wire::OneWireBus::write64 ( uint64_t val )

pure virtual

Write a 64 bit unsigned integer to the bus. LSB first.

Implemented in esphome::ds2484::DS2484OneWireBus, and esphome::gpio::GPIOOneWireBus.

write8()

virtual void esphome::one_wire::OneWireBus::write8 ( uint8_t val )

pure virtual

Write a word to the bus. LSB first.

Implemented in esphome::ds2484::DS2484OneWireBus, and esphome::gpio::GPIOOneWireBus.

Field Documentation

devices_

std::vector<uint64_t> esphome::one_wire::OneWireBus::devices_

protected

Definition at line 40 of file one_wire_bus.h.

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

• esphome/components/one_wire/one_wire_bus.h
• esphome/components/one_wire/one_wire_bus.cpp