MAX77985/MAX77986 charger setup for EVAL-POWRMS project. More...

#include "no_os_i2c.h"

Include dependency graph for powrms_max77986.h:

Macros
#define	MAX77986_I2C_ADDR 0x6B

#define	MAX77986_REG_CHG_CNFG_00 0x16

#define	MAX77986_REG_CHG_CNFG_04 0x1A

#define	MAX77986_REG_CHG_CNFG_06 0x1C

#define	MAX77986_REG_CHG_CNFG_07 0x1D

#define	MAX77986_REG_CHG_CNFG_08 0x1E

#define	MAX77986_REG_CHG_CNFG_09 0x1F

#define	MAX77986_CHG_CNFG_06_UNLOCK 0x0C

#define	MAX77986_CHG_CNFG_04_VAL 0xE4

#define	MAX77986_CHG_CNFG_08_VAL 0x50

#define	MAX77986_CHG_CNFG_09_VAL 0x6D

#define	MAX77986_CHG_CNFG_07_VAL 0x20

#define	MAX77986_CHG_CNFG_00_VAL 0x14

Functions
int	max77986_init (struct no_os_i2c_desc *desc, const struct no_os_i2c_init_param param)
	Initialize the MAX77986 over I2C in MODE 6 with maximum current.

int	max77986_remove (struct no_os_i2c_desc *desc)
	Free the resources allocated by max77986_init().

Detailed Description

MAX77985/MAX77986 charger setup for EVAL-POWRMS project.

Author: Robert Budai (rober.nosp@m.t.bu.nosp@m.dai@a.nosp@m.nalo.nosp@m.g.com)

SPDX-License-Identifier: BSD-3-Clause

Macro Definition Documentation

◆ MAX77986_CHG_CNFG_00_VAL

#define MAX77986_CHG_CNFG_00_VAL 0x14

◆ MAX77986_CHG_CNFG_04_VAL

#define MAX77986_CHG_CNFG_04_VAL 0xE4

◆ MAX77986_CHG_CNFG_06_UNLOCK

#define MAX77986_CHG_CNFG_06_UNLOCK 0x0C

◆ MAX77986_CHG_CNFG_07_VAL

#define MAX77986_CHG_CNFG_07_VAL 0x20

◆ MAX77986_CHG_CNFG_08_VAL

#define MAX77986_CHG_CNFG_08_VAL 0x50

◆ MAX77986_CHG_CNFG_09_VAL

#define MAX77986_CHG_CNFG_09_VAL 0x6D

◆ MAX77986_I2C_ADDR

#define MAX77986_I2C_ADDR 0x6B

◆ MAX77986_REG_CHG_CNFG_00

#define MAX77986_REG_CHG_CNFG_00 0x16

◆ MAX77986_REG_CHG_CNFG_04

#define MAX77986_REG_CHG_CNFG_04 0x1A

◆ MAX77986_REG_CHG_CNFG_06

#define MAX77986_REG_CHG_CNFG_06 0x1C

◆ MAX77986_REG_CHG_CNFG_07

#define MAX77986_REG_CHG_CNFG_07 0x1D

◆ MAX77986_REG_CHG_CNFG_08

#define MAX77986_REG_CHG_CNFG_08 0x1E

◆ MAX77986_REG_CHG_CNFG_09

#define MAX77986_REG_CHG_CNFG_09 0x1F

Function Documentation

◆ max77986_init()

int max77986_init	(	struct no_os_i2c_desc **	desc,
		const struct no_os_i2c_init_param *	param )

Initialize the MAX77986 over I2C in MODE 6 with maximum current.

Brings up the adapter->SYS synchronous buck (no battery) regulated to a fixed 5.0 V with the adapter input current limit set to its maximum (5.5 A). The charger config registers are unlocked first, the voltage and current limits configured, the BATT-to-SYS FET forced off, and MODE = 0x6 enabled last.

Parameters

desc	- Will be set to the allocated I2C descriptor on success. The caller owns it and must release it with max77986_remove().
param	- I2C bus initialization parameters (slave address 0x6B).

Returns: 0 on success, negative error code on failure.

◆ max77986_remove()

int max77986_remove ( struct no_os_i2c_desc * desc )

Free the resources allocated by max77986_init().