OPAMP

Interfaces for operational amplifiers (OPAMP). More...

Files
file	opamp.h
	Main header file for OPAMP (Operational Amplifier) driver API.

Data Structures
struct	opamp_driver_api
	@driver_ops{OPAMP} More...

Enumerations
enum	opamp_gain {   OPAMP_GAIN_1_7 = 0 , OPAMP_GAIN_1_3 , OPAMP_GAIN_1 , OPAMP_GAIN_5_3 ,   OPAMP_GAIN_2 , OPAMP_GAIN_11_5 , OPAMP_GAIN_3 , OPAMP_GAIN_4 ,   OPAMP_GAIN_13_3 , OPAMP_GAIN_7 , OPAMP_GAIN_8 , OPAMP_GAIN_15 ,   OPAMP_GAIN_16 , OPAMP_GAIN_31 , OPAMP_GAIN_32 , OPAMP_GAIN_33 ,   OPAMP_GAIN_63 , OPAMP_GAIN_64 }
	OPAMP gain factors. More...

Functions
int	opamp_set_gain (const struct device *dev, enum opamp_gain gain)
	Set opamp gain.
enum	opamp_functional_mode {   OPAMP_FUNCTIONAL_MODE_DIFFERENTIAL = 0 , OPAMP_FUNCTIONAL_MODE_INVERTING , OPAMP_FUNCTIONAL_MODE_NON_INVERTING , OPAMP_FUNCTIONAL_MODE_FOLLOWER ,   OPAMP_FUNCTIONAL_MODE_STANDALONE }
	@def_driverbackendgroup{OPAMP,opamp_interface} More...
typedef int(*	opamp_api_set_gain_t) (const struct device *dev, enum opamp_gain gain)
	Callback API to set opamp gain.

Detailed Description

Interfaces for operational amplifiers (OPAMP).

Since

4.3

Version

0.1.0

Typedef Documentation

opamp_api_set_gain_t

typedef int(* opamp_api_set_gain_t) (const struct device *dev, enum opamp_gain gain)

#include </__w/bridle/bridle/workspace/zephyr/include/zephyr/drivers/opamp.h>

Callback API to set opamp gain.

See opamp_set_gain() for argument description

Enumeration Type Documentation

opamp_functional_mode

enum opamp_functional_mode

#include </__w/bridle/bridle/workspace/zephyr/include/zephyr/drivers/opamp.h>

@def_driverbackendgroup{OPAMP,opamp_interface}

OPAMP functional mode.

Values correspond 1:1 to the functional-mode property in dts/bindings/opamp/opamp-controller.yaml.

Enumerator
OPAMP_FUNCTIONAL_MODE_DIFFERENTIAL	Differential amplifier mode.
OPAMP_FUNCTIONAL_MODE_INVERTING	Inverting amplifier mode.
OPAMP_FUNCTIONAL_MODE_NON_INVERTING	Non-inverting amplifier mode.
OPAMP_FUNCTIONAL_MODE_FOLLOWER	Follower mode.
OPAMP_FUNCTIONAL_MODE_STANDALONE	Standalone mode. The gain is set by external resistors. The API call to set the gain is ignored in this mode or has no impact.

opamp_gain

enum opamp_gain

#include </__w/bridle/bridle/workspace/zephyr/include/zephyr/drivers/opamp.h>

OPAMP gain factors.

Enumerator
OPAMP_GAIN_1_7	x 1/7.
OPAMP_GAIN_1_3	x 1/3.
OPAMP_GAIN_1	x 1.
OPAMP_GAIN_5_3	x 5/3.
OPAMP_GAIN_2	x 2.
OPAMP_GAIN_11_5	x 11/5.
OPAMP_GAIN_3	x 3.
OPAMP_GAIN_4	x 4.
OPAMP_GAIN_13_3	x 13/3.
OPAMP_GAIN_7	x 7.
OPAMP_GAIN_8	x 8.
OPAMP_GAIN_15	x 15.
OPAMP_GAIN_16	x 16.
OPAMP_GAIN_31	x 31.
OPAMP_GAIN_32	x 32.
OPAMP_GAIN_33	x 33.
OPAMP_GAIN_63	x 63.
OPAMP_GAIN_64	x 64.

Function Documentation

opamp_set_gain()

int opamp_set_gain	(	const struct device *	dev,
		enum opamp_gain	gain )

#include </__w/bridle/bridle/workspace/zephyr/include/zephyr/drivers/opamp.h>

Set opamp gain.

Parameters

dev	Pointer to the device structure for the driver instance.
gain	Opamp gain, refer to enum opamp_gain.

Return values

0	If opamp gain has been successfully set.
-errno	Negative errno in case of failure.