1-Wire Interface

1-Wire Interface More...

Topics
	1-Wire Sensor API
	1-Wire Sensor API
	1-Wire data link layer
	1-Wire data link layer
	1-Wire network layer
	1-Wire network layer

Enumerations
enum	w1_settings_type { W1_SETTING_SPEED , W1_SETTING_STRONG_PULLUP , W1_SETINGS_TYPE_COUNT }
	Defines the 1-Wire master settings types, which are runtime configurable. More...

Functions
static int	w1_lock_bus (const struct device *dev)
	Lock the 1-wire bus to prevent simultaneous access.
static int	w1_unlock_bus (const struct device *dev)
	Unlock the 1-wire bus.

Detailed Description

1-Wire Interface

Since

3.2

Version

0.1.0

Enumeration Type Documentation

w1_settings_type

enum w1_settings_type

#include <zephyr/drivers/w1.h>

Defines the 1-Wire master settings types, which are runtime configurable.

Enumerator
W1_SETTING_SPEED	Overdrive speed is enabled in case a value of 1 is passed and disabled passing 0.
W1_SETTING_STRONG_PULLUP	The strong pullup resistor is activated immediately after the next written data block by passing a value of 1, and deactivated passing 0.
W1_SETINGS_TYPE_COUNT	Number of different settings types.

Function Documentation

w1_lock_bus()

static int w1_lock_bus ( const struct device * dev )

inlinestatic

#include <zephyr/drivers/w1.h>

Lock the 1-wire bus to prevent simultaneous access.

This routine locks the bus to prevent simultaneous access from different threads. The calling thread waits until the bus becomes available. A thread is permitted to lock a mutex it has already locked.

Parameters

[in]

dev

Pointer to the device structure for the driver instance.

Return values

0	If successful.
-errno	Negative error code on error.

w1_unlock_bus()

static int w1_unlock_bus ( const struct device * dev )

inlinestatic

#include <zephyr/drivers/w1.h>

Unlock the 1-wire bus.

This routine unlocks the bus to permit access to bus line.

Parameters

[in]

dev

Pointer to the device structure for the driver instance.

Return values

0	If successful.
-errno	Negative error code on error.