#include <stdint.h>
#include <stdbool.h>
#include <stdlib.h>
#include <errno.h>
#include "no_os_units.h"
#include "no_os_util.h"
#include "no_os_delay.h"
#include "no_os_alloc.h"
#include "no_os_pwm.h"
#include "no_os_i2c.h"
#include "no_os_gpio.h"
#include "no_os_crc8.h"
#include "ltp8800.h"

Include dependency graph for ltp8800.c:

Functions
	NO_OS_DECLARE_CRC8_TABLE (ltp8800_crc_table)

int	ltp8800_init (struct ltp8800_dev *device, struct ltp8800_init_param init_param)
	Initialize the device structure. More...

int	ltp8800_remove (struct ltp8800_dev *dev)
	Free or remove device instance. More...

int	ltp8800_send_byte (struct ltp8800_dev *dev, uint16_t cmd)
	Send a PMBus command to the device. More...

int	ltp8800_read_byte (struct ltp8800_dev dev, uint16_t cmd, uint8_t data)
	Perform a raw PMBus read byte operation. More...

int	ltp8800_write_byte (struct ltp8800_dev *dev, uint16_t cmd, uint8_t value)
	Perform a raw PMBus write byte operation. More...

int	ltp8800_read_word (struct ltp8800_dev dev, uint16_t cmd, uint16_t word)
	Perform a raw PMBus read word operation. More...

int	ltp8800_write_word (struct ltp8800_dev *dev, uint16_t cmd, uint16_t word)
	Perform a raw PMBus write word operation. More...

int	ltp8800_read_word_data (struct ltp8800_dev dev, uint16_t cmd, int data)
	Perform a PMBus read word operation and converts to actual value. More...

int	ltp8800_write_word_data (struct ltp8800_dev *dev, uint16_t cmd, int data)
	Converts value to register data and do PMBus write word operation. More...

int	ltp8800_read_block_data (struct ltp8800_dev dev, uint16_t cmd, uint8_t data, size_t nbytes)
	Perform a PMBus read block operation. More...

int	ltp8800_read_value (struct ltp8800_dev dev, enum ltp8800_value_type value_type, int value)
	Read a value. More...

int	ltp8800_read_status (struct ltp8800_dev dev, enum ltp8800_status_type status_type, struct ltp8800_status status)
	Read statuses. More...

int	ltp8800_vout_value (struct ltp8800_dev *dev, int vout_command)
	Set output voltage command. More...

int	ltp8800_vout_settings (struct ltp8800_dev *dev, enum ltp8800_vout_settings settings)
	Set output voltage and its upper limit. More...

int	ltp8800_set_vin (struct ltp8800_dev *dev, int vin_on, int vin_off)
	Set input voltage window at which power conversion will proceed. More...

int	ltp8800_set_fault_limit (struct ltp8800_dev *dev, enum ltp8800_limit_type limit, int limit_val)
	Set overvalue and undervalue limits. More...

int	ltp8800_sync_config (struct ltp8800_dev *dev, bool enable)
	Enable or disable sync pin. More...

int	ltp8800_interleave_order (struct ltp8800_dev *dev, uint8_t order)
	Set phase order for polyphase application. More...

int	ltp8800_loop_compensation (struct ltp8800_dev *dev, uint8_t pole, uint8_t zero, uint8_t hf_gain, uint8_t lf_gain)
	Program loop compensation for regulator transient response. More...

int	ltp8800_set_device_state (struct ltp8800_dev *dev, bool state)
	Set device state. More...

int	ltp8800_store_user_settings (struct ltp8800_dev *dev)
	Store user settings to EEPROM. More...

int	ltp8800_restore_user_settings (struct ltp8800_dev *dev)
	Restore user settings. More...

Function Documentation

◆ ltp8800_init()

int ltp8800_init	(	struct ltp8800_dev **	device,
		struct ltp8800_init_param *	init_param
	)

Initialize the device structure.

Parameters

device	- Device structure
init_param	- Initialization parameters

Returns: 0 in case of success, negative error code otherwise

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◆ ltp8800_interleave_order()

int ltp8800_interleave_order	(	struct ltp8800_dev *	dev,
		uint8_t	order
	)

Set phase order for polyphase application.

Parameters

dev	- Device structure
order	- Order number. The resulting phase offset of the device is equivalent to this value multiplied by 22.5 degrees.

Returns: 0 in case of success, negative error code otherwise

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◆ ltp8800_loop_compensation()

int ltp8800_loop_compensation	(	struct ltp8800_dev *	dev,
		uint8_t	pole,
		uint8_t	zero,
		uint8_t	hf_gain,
		uint8_t	lf_gain
	)

Program loop compensation for regulator transient response.

Parameters

dev	- Device structure
pole	- Pole setting
zero	- Zero setting
hf_gain	- High frequency gain setting
lf_gain	- Low frequence gain setting

Returns: 0 in case of success, negative error code otherwise

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◆ ltp8800_read_block_data()

int ltp8800_read_block_data	(	struct ltp8800_dev *	dev,
		uint16_t	cmd,
		uint8_t *	data,
		size_t	nbytes
	)

Perform a PMBus read block operation.

Parameters

dev	- Device structure
cmd	- PMBus command
data	- Address of the read block
nbytes	- Size of the block in bytes

Returns: 0 in case of success, negative error code otherwise

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◆ ltp8800_read_byte()

int ltp8800_read_byte	(	struct ltp8800_dev *	dev,
		uint16_t	cmd,
		uint8_t *	data
	)

Perform a raw PMBus read byte operation.

Parameters

dev	- Device structure
cmd	- PMBus command
data	- Address of the byte read

Returns: 0 in case of success, negative error code otherwise

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◆ ltp8800_read_status()

int ltp8800_read_status	(	struct ltp8800_dev *	dev,
		enum ltp8800_status_type	status_type,
		struct ltp8800_status *	status
	)

Read statuses.

Parameters

dev	- Device structure
status_type	- Status type. Example values: LTP8800_STATUS_BYTE_TYPE LTP8800_STATUS_VOUT_TYPE LTP8800_STATUS_IOUT_TYPE LTP8800_STATUS_INPUT_TYPE LTP8800_STATUS_CML_TYPE
status	- Address of the status structure

Returns: 0 in case of success, negative error code otherwise

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◆ ltp8800_read_value()

int ltp8800_read_value	(	struct ltp8800_dev *	dev,
		enum ltp8800_value_type	value_type,
		int *	value
	)

Read a value.

Parameters

dev	- Device structure
value_type	- Value type. Example values: LTP8800_VIN LTP8800_VOUT LTP8800_IIN LTP8800_IOUT LTP8800_TEMP LTP8800_FREQUENCY
value	- Address of the read value

Returns: 0 in case of success, negative error code otherwise

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◆ ltp8800_read_word()

int ltp8800_read_word	(	struct ltp8800_dev *	dev,
		uint16_t	cmd,
		uint16_t *	word
	)

Perform a raw PMBus read word operation.

Parameters

dev	- Device structure
cmd	- PMBus command
word	- Address of the read word

Returns: 0 in case of success, negative error code otherwise

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◆ ltp8800_read_word_data()

int ltp8800_read_word_data	(	struct ltp8800_dev *	dev,
		uint16_t	cmd,
		int *	data
	)

Perform a PMBus read word operation and converts to actual value.

Parameters

dev	- Device structure
cmd	- PMBus command
data	- Address of data read

Returns: 0 in case of success, negative error code otherwise

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◆ ltp8800_remove()

int ltp8800_remove ( struct ltp8800_dev * dev )

Free or remove device instance.

Parameters

dev	- The device structure

Returns: 0 in case of success, negative error code otherwise

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◆ ltp8800_restore_user_settings()

int ltp8800_restore_user_settings ( struct ltp8800_dev * dev )

Restore user settings.

Parameters

dev	- Device structure

Returns: 0 in case of success, negative error code otherwise

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◆ ltp8800_send_byte()

int ltp8800_send_byte	(	struct ltp8800_dev *	dev,
		uint16_t	cmd
	)

Send a PMBus command to the device.

Parameters

dev	- Device structure
cmd	- PMBus command

Returns: 0 in case of success, negative error code otherwise

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◆ ltp8800_set_device_state()

int ltp8800_set_device_state	(	struct ltp8800_dev *	dev,
		bool	state
	)

Set device state.

Parameters

dev	- Device structure
state	- Set to true to enable device, false to disable

Returns: 0 in case of success, negative error code otherwise

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◆ ltp8800_set_fault_limit()

int ltp8800_set_fault_limit	(	struct ltp8800_dev *	dev,
		enum ltp8800_limit_type	limit,
		int	limit_val
	)

Set overvalue and undervalue limits.

Parameters

dev	- Device structure
limit	- Limit value type. Example: LTP8800_VIN_OV_FAULT_LIMIT_TYPE LTP8800_VIN_UV_FAULT_LIMIT_TYPE LTP8800_IIN_OC_FAULT_LIMIT_TYPE LTP8800_POUT_OP_FAULT_LIMIT_TYPE
limit_val	- Limit value in milli-units for voltage and current, and microseconds for timing.

Returns: 0 in case of success, negative error code otherwise

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◆ ltp8800_set_vin()

int ltp8800_set_vin	(	struct ltp8800_dev *	dev,
		int	vin_on,
		int	vin_off
	)

Set input voltage window at which power conversion will proceed.

Parameters

dev	- Device structure
vin_on	- Input voltage in millivolts at which conversion will start
vin_off	- Input voltage in millivolts at which conversion will stop

Returns: 0 in case of success, negative error code otherwise

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◆ ltp8800_store_user_settings()

int ltp8800_store_user_settings ( struct ltp8800_dev * dev )

Store user settings to EEPROM.

Parameters

dev	- Device structure

Returns: 0 in case of success, negative error code otherwise

◆ ltp8800_sync_config()

int ltp8800_sync_config	(	struct ltp8800_dev *	dev,
		bool	enable
	)

Enable or disable sync pin.

Parameters

dev	- Device structure
enable	- Set to true to enable, or false to disable

Returns: 0 in case of success, negative error code otherwise

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◆ ltp8800_vout_settings()

int ltp8800_vout_settings	(	struct ltp8800_dev *	dev,
		enum ltp8800_vout_settings	settings
	)

Set output voltage and its upper limit.

Parameters

dev	- Device structure
settings	- Gain settings

Returns: 0 in case of success, negative error code otherwise

◆ ltp8800_vout_value()

int ltp8800_vout_value	(	struct ltp8800_dev *	dev,
		int	vout_command
	)

Set output voltage command.

Parameters

dev	- Device structure
vout_command	- Output voltage in millivolts

Returns: 0 in case of success, negative error code otherwise

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◆ ltp8800_write_byte()

int ltp8800_write_byte	(	struct ltp8800_dev *	dev,
		uint16_t	cmd,
		uint8_t	value
	)

Perform a raw PMBus write byte operation.

Parameters

dev	- Device structure
cmd	- PMBus command
value	- Byte to be written

Returns: 0 in case of success, negative error code otherwise

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◆ ltp8800_write_word()

int ltp8800_write_word	(	struct ltp8800_dev *	dev,
		uint16_t	cmd,
		uint16_t	word
	)

Perform a raw PMBus write word operation.

Parameters

dev	- Device structure
cmd	- PMBus command
word	- Word to write

Returns: 0 in case of success, negative error code otherwise

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◆ ltp8800_write_word_data()

int ltp8800_write_word_data	(	struct ltp8800_dev *	dev,
		uint16_t	cmd,
		int	data
	)

Converts value to register data and do PMBus write word operation.

Parameters

dev	- Device structure
cmd	- PMBus command
data	- Value to write

Returns: 0 in case of success, negative error code otherwise

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◆ NO_OS_DECLARE_CRC8_TABLE()

NO_OS_DECLARE_CRC8_TABLE ( ltp8800_crc_table )

Functions

Function Documentation

◆ ltp8800_init()

◆ ltp8800_interleave_order()

◆ ltp8800_loop_compensation()

◆ ltp8800_read_block_data()

◆ ltp8800_read_byte()

◆ ltp8800_read_status()

◆ ltp8800_read_value()

◆ ltp8800_read_word()

◆ ltp8800_read_word_data()

◆ ltp8800_remove()

◆ ltp8800_restore_user_settings()

◆ ltp8800_send_byte()

◆ ltp8800_set_device_state()

◆ ltp8800_set_fault_limit()

◆ ltp8800_set_vin()

◆ ltp8800_store_user_settings()

◆ ltp8800_sync_config()

◆ ltp8800_vout_settings()

◆ ltp8800_vout_value()

◆ ltp8800_write_byte()

◆ ltp8800_write_word()

◆ ltp8800_write_word_data()

◆ NO_OS_DECLARE_CRC8_TABLE()