#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 "lt7182s.h"

Include dependency graph for lt7182s.c:

Functions
	NO_OS_DECLARE_CRC8_TABLE (lt7182s_crc_table)

int	lt7182s_init (struct lt7182s_dev *device, struct lt7182s_init_param init_param)
	Initialize the device structure.

int	lt7182s_remove (struct lt7182s_dev *dev)
	Free or remove device instance.

int	lt7182s_set_page (struct lt7182s_dev *dev, int page)
	Set page of the device. Page 0x0 - Channel 0 Page 0x1 - Channel 1 Page 0xff - Both channels.

int	lt7182s_send_byte (struct lt7182s_dev *dev, int page, uint8_t cmd)
	Send a PMBus command to the device.

int	lt7182s_read_byte (struct lt7182s_dev dev, int page, uint8_t cmd, uint8_t data)
	Perform a raw PMBus read byte operation.

int	lt7182s_write_byte (struct lt7182s_dev *dev, int page, uint8_t cmd, uint8_t value)
	Perform a raw PMBus write byte operation.

int	lt7182s_read_word (struct lt7182s_dev dev, int page, uint8_t cmd, uint16_t word)
	Perform a raw PMBus read word operation.

int	lt7182s_write_word (struct lt7182s_dev *dev, int page, uint8_t cmd, uint16_t word)
	Perform a raw PMBus write word operation.

int	lt7182s_read_word_data (struct lt7182s_dev dev, int page, uint8_t cmd, int data)
	Perform a PMBus read word operation and converts to actual value.

int	lt7182s_write_word_data (struct lt7182s_dev *dev, int page, uint8_t cmd, int data)
	Converts value to register data and do PMBus write word operation.

int	lt7182s_read_block_data (struct lt7182s_dev dev, int page, uint8_t cmd, uint8_t data, size_t nbytes)
	Perform a PMBus read block operation.

int	lt7182s_read_value (struct lt7182s_dev dev, int channel, enum lt7182s_value_type value_type, int value)
	Read a value.

int	lt7182s_read_status (struct lt7182s_dev dev, int channel, enum lt7182s_status_type status_type, struct lt7182s_status status)
	Read statuses.

int	lt7182s_vout_value (struct lt7182s_dev *dev, int channel, int vout_command, int vout_max)
	Set output voltage and its upper limit.

int	lt7182s_vout_tr (struct lt7182s_dev *dev, int channel, int tr)
	Set output voltage transition rate.

int	lt7182s_vout_margin (struct lt7182s_dev *dev, int channel, int margin_high, int margin_low)
	Set output voltage margin.

int	lt7182s_set_vin (struct lt7182s_dev *dev, int channel, int vin_on, int vin_off)
	Set input voltage window at which power conversion will proceed.

int	lt7182s_set_timing (struct lt7182s_dev *dev, int channel, enum lt7182s_timing_type timing_type, int time)
	Set timing values.

int	lt7182s_switch_freq (struct lt7182s_dev *dev, int freq)
	Set switching frequency.

int	lt7182s_pwm_mode (struct lt7182s_dev *dev, int channel, enum lt7182s_pwm_mode pwm_mode)
	Set output PWM mode.

int	lt7182s_pwm_phase (struct lt7182s_dev *dev, int channel, int phase)
	Set output PWM phase.

int	lt7182s_set_limit (struct lt7182s_dev *dev, int channel, enum lt7182s_limit_type limit, int limit_val)
	Set overvalue and undervalue limits.

int	lt7182s_set_operation (struct lt7182s_dev *dev, int channel, enum lt7182s_operation_type operation)
	Set channel operation.

int	lt7182s_set_channel_state (struct lt7182s_dev *dev, int channel, bool state)
	Set channel state using the RUN pin.

int	lt7182s_sync_config (struct lt7182s_dev *dev, bool input_clk, bool output_clk)
	Configure SYNC pin for clock synchronization.

int	lt7182s_adc_control (struct lt7182s_dev *dev, bool low_freq_telemetry, bool debug_telemetry)
	Configure ADC control.

int	lt7182s_nvm_cmd (struct lt7182s_dev *dev, enum lt7182s_nvm_cmd_type cmd)
	Perform commands for non-volatile memory/EEPROM.

int	lt7182s_clear_faults (struct lt7182s_dev *dev)
	Clear all asserted faults.

int	lt7182s_software_reset (struct lt7182s_dev *dev)
	Perform a device software reset.

Function Documentation

◆ lt7182s_adc_control()

int lt7182s_adc_control	(	struct lt7182s_dev *	dev,
		bool	low_freq_telemetry,
		bool	debug_telemetry )

Configure ADC control.

Parameters

dev	- Device structure
low_freq_telemetry	- Enable for low frequency telemetry (every 100ms)
debug_telemetry	- Enable for debug telemetry with EXTVcc and Ith

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

◆ lt7182s_clear_faults()

int lt7182s_clear_faults ( struct lt7182s_dev * dev )

Clear all asserted faults.

Parameters

dev	- Device structure

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

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◆ lt7182s_init()

int lt7182s_init	(	struct lt7182s_dev **	device,
		struct lt7182s_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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◆ lt7182s_nvm_cmd()

int lt7182s_nvm_cmd	(	struct lt7182s_dev *	dev,
		enum lt7182s_nvm_cmd_type	cmd )

Perform commands for non-volatile memory/EEPROM.

Parameters

dev	- Device structure
cmd	- NVM commands. Example: LT7182S_LOCK_USER LT7182S_UNLOCK_USER LT7182S_STORE_USER LT7182S_COMPARE_USER LT7182S_RESTORE_USER

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

◆ lt7182s_pwm_mode()

int lt7182s_pwm_mode	(	struct lt7182s_dev *	dev,
		int	channel,
		enum lt7182s_pwm_mode	pwm_mode )

Set output PWM mode.

Parameters

dev	- Device structure
channel	- Output channel
pwm_mode	-

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

◆ lt7182s_pwm_phase()

int lt7182s_pwm_phase	(	struct lt7182s_dev *	dev,
		int	channel,
		int	phase )

Set output PWM phase.

Parameters

dev	- Device structure
channel	- Channel
phase	- Phase in milli-degrees

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

◆ lt7182s_read_block_data()

int lt7182s_read_block_data	(	struct lt7182s_dev *	dev,
		int	page,
		uint8_t	cmd,
		uint8_t *	data,
		size_t	nbytes )

Perform a PMBus read block operation.

Parameters

dev	- Device structure
page	- Page/channel of the command
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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◆ lt7182s_read_byte()

int lt7182s_read_byte	(	struct lt7182s_dev *	dev,
		int	page,
		uint8_t	cmd,
		uint8_t *	data )

Perform a raw PMBus read byte operation.

Parameters

dev	- Device structure
page	- Page or channel of the command
cmd	- PMBus command
data	- Address of the byte read

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

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◆ lt7182s_read_status()

int lt7182s_read_status	(	struct lt7182s_dev *	dev,
		int	channel,
		enum lt7182s_status_type	status_type,
		struct lt7182s_status *	status )

Read statuses.

Parameters

dev	- Device structure
channel	- Channel of the status to read
status_type	- Status type. Example values: LT7182S_STATUS_BYTE_TYPE LT7182S_STATUS_VOUT_TYPE LT7182S_STATUS_IOUT_TYPE LT7182S_STATUS_INPUT_TYPE LT7182S_STATUS_CML_TYPE
status	- Address of the status structure

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

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◆ lt7182s_read_value()

int lt7182s_read_value	(	struct lt7182s_dev *	dev,
		int	channel,
		enum lt7182s_value_type	value_type,
		int *	value )

Read a value.

Parameters

dev	- Device structure
channel	- Channel selected
value_type	- Value type. Example values: LT7182S_VIN LT7182S_VOUT LT7182S_IIN LT7182S_IOUT LT7182S_TEMP LT7182S_FREQUENCY
value	- Address of the read value

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

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◆ lt7182s_read_word()

int lt7182s_read_word	(	struct lt7182s_dev *	dev,
		int	page,
		uint8_t	cmd,
		uint16_t *	word )

Perform a raw PMBus read word operation.

Parameters

dev	- Device structure
page	- Page/channel of the command
cmd	- PMBus command
word	- Address of the read word

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

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◆ lt7182s_read_word_data()

int lt7182s_read_word_data	(	struct lt7182s_dev *	dev,
		int	page,
		uint8_t	cmd,
		int *	data )

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

Parameters

dev	- Device structure
page	- Page/channel of the command
cmd	- PMBus command
data	- Address of data read

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

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◆ lt7182s_remove()

int lt7182s_remove ( struct lt7182s_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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◆ lt7182s_send_byte()

int lt7182s_send_byte	(	struct lt7182s_dev *	dev,
		int	page,
		uint8_t	cmd )

Send a PMBus command to the device.

Parameters

dev	- Device structure
page	- Page or channel of the command
cmd	- PMBus command

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

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◆ lt7182s_set_channel_state()

int lt7182s_set_channel_state	(	struct lt7182s_dev *	dev,
		int	channel,
		bool	state )

Set channel state using the RUN pin.

Parameters

dev	- Device structure
channel	- Channel
state	- true for ON, false for OFF

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

◆ lt7182s_set_limit()

int lt7182s_set_limit	(	struct lt7182s_dev *	dev,
		int	channel,
		enum lt7182s_limit_type	limit,
		int	limit_val )

Set overvalue and undervalue limits.

Parameters

dev	- Device structure
channel	- Channel
limit	- Limit value type. Example: LT7182S_VOUT_OV_FAULT_LIMIT_TYPE LT7182S_OT_WARN_LIMIT_TYPE LT7182S_TON_MAX_FAULT_LIMIT_TYPE LT7182S_IIN_OC_WARN_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

◆ lt7182s_set_operation()

int lt7182s_set_operation	(	struct lt7182s_dev *	dev,
		int	channel,
		enum lt7182s_operation_type	operation )

Set channel operation.

Parameters

dev	- Device structure
channel	- Channel
operation	- Operation. Accepted values are: LT7182S_OPERATION_OFF LT7182S_OPERATION_ON LT7182S_OPERATION_MARGIN_HIGH LT7182S_OPERATION_MARGIN_LOW LT7182S_OPERATION_SEQ_OFF

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

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◆ lt7182s_set_page()

int lt7182s_set_page	(	struct lt7182s_dev *	dev,
		int	page )

Set page of the device. Page 0x0 - Channel 0 Page 0x1 - Channel 1 Page 0xff - Both channels.

Parameters

dev	- Device structure
page	- Page to set

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

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◆ lt7182s_set_timing()

int lt7182s_set_timing	(	struct lt7182s_dev *	dev,
		int	channel,
		enum lt7182s_timing_type	timing_type,
		int	time )

Set timing values.

Parameters

dev	- Device structure
channel	- Channel
timing_type	- Timing value type. Example: LT7182S_TON_DELAY_TYPE LT7182S_TON_RISE_TYPE LT7182S_TOFF_DELAY_TYPE LT7182_RETRY_DELAY_TYPE
time	- Time value in microseconds

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

◆ lt7182s_set_vin()

int lt7182s_set_vin	(	struct lt7182s_dev *	dev,
		int	channel,
		int	vin_on,
		int	vin_off )

Set input voltage window at which power conversion will proceed.

Parameters

dev	- Device structure
channel	- Channel
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

◆ lt7182s_software_reset()

int lt7182s_software_reset ( struct lt7182s_dev * dev )

Perform a device software reset.

Parameters

dev	- Device structure

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

◆ lt7182s_switch_freq()

int lt7182s_switch_freq	(	struct lt7182s_dev *	dev,
		int	freq )

Set switching frequency.

Parameters

dev	- Device structure
freq	- Frequency to set in Hz. Value should be between 400 kHz and 4000 kHz.

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

◆ lt7182s_sync_config()

int lt7182s_sync_config	(	struct lt7182s_dev *	dev,
		bool	input_clk,
		bool	output_clk )

Configure SYNC pin for clock synchronization.

Parameters

dev	- Device structure
input_clk	- Enable to use SYNC clock input
output_clk	- Enable to use SYNC output clock

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

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◆ lt7182s_vout_margin()

int lt7182s_vout_margin	(	struct lt7182s_dev *	dev,
		int	channel,
		int	margin_high,
		int	margin_low )

Set output voltage margin.

Parameters

dev	- Device structure
channel	- Channel
margin_high	- Upper margin in millivolts
margin_low	- Lower margin in millivolts

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

◆ lt7182s_vout_tr()

int lt7182s_vout_tr	(	struct lt7182s_dev *	dev,
		int	channel,
		int	tr )

Set output voltage transition rate.

Parameters

dev	- Device structure
channel	- Channel
tr	- Transition rate in V/s or mV/ms

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

◆ lt7182s_vout_value()

int lt7182s_vout_value	(	struct lt7182s_dev *	dev,
		int	channel,
		int	vout_command,
		int	vout_max )

Set output voltage and its upper limit.

Parameters

dev	- Device structure
channel	- Channel
vout_command	- Output voltage in millivolts
vout_max	- Output voltage upper limit in millivolts

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

◆ lt7182s_write_byte()

int lt7182s_write_byte	(	struct lt7182s_dev *	dev,
		int	page,
		uint8_t	cmd,
		uint8_t	value )

Perform a raw PMBus write byte operation.

Parameters

dev	- Device structure
page	- Page/channel of the command
cmd	- PMBus command
value	- Byte to be written

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

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◆ lt7182s_write_word()

int lt7182s_write_word	(	struct lt7182s_dev *	dev,
		int	page,
		uint8_t	cmd,
		uint16_t	word )

Perform a raw PMBus write word operation.

Parameters

dev	- Device structure
page	- Page/channel of the command
cmd	- PMBus command
word	- Word to write

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

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◆ lt7182s_write_word_data()

int lt7182s_write_word_data	(	struct lt7182s_dev *	dev,
		int	page,
		uint8_t	cmd,
		int	data )

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

Parameters

dev	- Device structure
page	- Page/channel of the command
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 ( lt7182s_crc_table )

Functions

Function Documentation

◆ lt7182s_adc_control()

◆ lt7182s_clear_faults()

◆ lt7182s_init()

◆ lt7182s_nvm_cmd()

◆ lt7182s_pwm_mode()

◆ lt7182s_pwm_phase()

◆ lt7182s_read_block_data()

◆ lt7182s_read_byte()

◆ lt7182s_read_status()

◆ lt7182s_read_value()

◆ lt7182s_read_word()

◆ lt7182s_read_word_data()

◆ lt7182s_remove()

◆ lt7182s_send_byte()

◆ lt7182s_set_channel_state()

◆ lt7182s_set_limit()

◆ lt7182s_set_operation()

◆ lt7182s_set_page()

◆ lt7182s_set_timing()

◆ lt7182s_set_vin()

◆ lt7182s_software_reset()

◆ lt7182s_switch_freq()

◆ lt7182s_sync_config()

◆ lt7182s_vout_margin()

◆ lt7182s_vout_tr()

◆ lt7182s_vout_value()

◆ lt7182s_write_byte()

◆ lt7182s_write_word()

◆ lt7182s_write_word_data()

◆ NO_OS_DECLARE_CRC8_TABLE()