one_wire_host.h File Reference

1-Wire host (master) library More...

#include <stdint.h>
#include <stdbool.h>
#include <furi_hal_gpio.h>

Go to the source code of this file.

Typedefs
typedef struct OneWireHost	OneWireHost

Enumerations
enum	OneWireHostSearchMode { OneWireHostSearchModeConditional = 0 , OneWireHostSearchModeNormal = 1 }

Functions
OneWireHost *	onewire_host_alloc (const GpioPin *gpio_pin)
	Allocate OneWireHost instance.
void	onewire_host_free (OneWireHost *host)
	Destroy OneWireHost instance, free resources.
bool	onewire_host_reset (OneWireHost *host)
	Reset the 1-Wire bus.
bool	onewire_host_read_bit (OneWireHost *host)
	Read one bit.
uint8_t	onewire_host_read (OneWireHost *host)
	Read one byte.
void	onewire_host_read_bytes (OneWireHost *host, uint8_t *buffer, uint16_t count)
	Read one or more bytes.
void	onewire_host_write_bit (OneWireHost *host, bool value)
	Write one bit.
void	onewire_host_write (OneWireHost *host, uint8_t value)
	Write one byte.
void	onewire_host_write_bytes (OneWireHost *host, const uint8_t *buffer, uint16_t count)
	Write one or more bytes.
void	onewire_host_start (OneWireHost *host)
	Start working with the bus.
void	onewire_host_stop (OneWireHost *host)
	Stop working with the bus.
void	onewire_host_reset_search (OneWireHost *host)
	Reset previous search results.
void	onewire_host_target_search (OneWireHost *host, uint8_t family_code)
	Set the family code to search for.
bool	onewire_host_search (OneWireHost *host, uint8_t *new_addr, OneWireHostSearchMode mode)
	Search for devices on the 1-Wire bus.
void	onewire_host_set_overdrive (OneWireHost *host, bool set)
	Enable overdrive mode.

Detailed Description

1-Wire host (master) library

Enumeration Type Documentation

OneWireHostSearchMode

enum OneWireHostSearchMode

Enumerator
OneWireHostSearchModeConditional	Search for alarmed device.
OneWireHostSearchModeNormal	Search for all devices.

Function Documentation

onewire_host_alloc()

OneWireHost * onewire_host_alloc

(

const GpioPin *

gpio_pin

)

Allocate OneWireHost instance.

Parameters

[in]

gpio_pin

connection pin

Returns

pointer to OneWireHost instance

onewire_host_free()

void onewire_host_free

(

OneWireHost *

host

)

Destroy OneWireHost instance, free resources.

Parameters

[in]

host

pointer to OneWireHost instance

onewire_host_read()

uint8_t onewire_host_read

(

OneWireHost *

host

)

Read one byte.

Parameters

[in]

host

pointer to OneWireHost instance

Returns

received byte value

onewire_host_read_bit()

bool onewire_host_read_bit

(

OneWireHost *

host

)

Read one bit.

Parameters

[in]

host

pointer to OneWireHost instance

Returns

received bit value

onewire_host_read_bytes()

void onewire_host_read_bytes	(	OneWireHost *	host,
		uint8_t *	buffer,
		uint16_t	count )

Read one or more bytes.

Parameters

[in]	host	pointer to OneWireHost instance
[out]	buffer	received data buffer
[in]	count	number of bytes to read

onewire_host_reset()

bool onewire_host_reset

(

OneWireHost *

host

)

Reset the 1-Wire bus.

Parameters

[in]

host

pointer to OneWireHost instance

Returns

true if presence was detected, false otherwise

onewire_host_reset_search()

void onewire_host_reset_search

(

OneWireHost *

host

)

Reset previous search results.

Parameters

[in]

host

pointer to OneWireHost instance

onewire_host_search()

bool onewire_host_search	(	OneWireHost *	host,
		uint8_t *	new_addr,
		OneWireHostSearchMode	mode )

Search for devices on the 1-Wire bus.

Parameters

[in]	host	pointer to OneWireHost instance
[out]	new_addr	pointer to the buffer to contain the unique ROM of the found device
[in]	mode	search mode

Returns

true on success, false otherwise

onewire_host_set_overdrive()

void onewire_host_set_overdrive	(	OneWireHost *	host,
		bool	set )

Enable overdrive mode.

Parameters

[in]	host	pointer to OneWireHost instance
[in]	set	true to turn overdrive on, false to turn it off

onewire_host_start()

void onewire_host_start

(

OneWireHost *

host

)

Start working with the bus.

Parameters

[in]

host

pointer to OneWireHost instance

onewire_host_stop()

void onewire_host_stop

(

OneWireHost *

host

)

Stop working with the bus.

Parameters

[in]

host

pointer to OneWireHost instance

onewire_host_target_search()

void onewire_host_target_search	(	OneWireHost *	host,
		uint8_t	family_code )

Set the family code to search for.

Parameters

[in]	host	pointer to OneWireHost instance
[in]	family_code	device family code

onewire_host_write()

void onewire_host_write	(	OneWireHost *	host,
		uint8_t	value )

Write one byte.

Parameters

[in]	host	pointer to OneWireHost instance
	value	byte value to write

onewire_host_write_bit()

void onewire_host_write_bit	(	OneWireHost *	host,
		bool	value )

Write one bit.

Parameters

[in]	host	pointer to OneWireHost instance
	value	bit value to write

onewire_host_write_bytes()

void onewire_host_write_bytes	(	OneWireHost *	host,
		const uint8_t *	buffer,
		uint16_t	count )

Write one or more bytes.

Parameters

[in]	host	pointer to OneWireHost instance
[in]	buffer	pointer to the data to write
[in]	count	size of the data to write