Header file of ltc2672 Driver. More...

#include <stdint.h>
#include <stdbool.h>
#include "no_os_spi.h"
#include "no_os_error.h"
#include "no_os_units.h"

Include dependency graph for ltc2672.h:

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Classes
struct	ltc2672_dev
	Structure holding ltc2672 descriptor. More...

struct	ltc2672_init_param
	Structure holding the parameters for ltc2672 initialization. More...

Macros
#define	LTC2672_16_DONT_CARE 0xFFF0

#define	LTC2672_MUX_DONT_CARE 0xFFFE0

#define	LTC2672_DUMMY 0xFFFF

#define	LTC2672_FAULT_REG_MASK 0xFF0000

#define	LTC2672_BASE_CURRENT 3.125

#define	LTC2672_VMINUS_FIXED_CURRENT -80

#define	LTC2672_OFF_CURRENT 0

#define	LTC2672_300MA_CURRENT 300

#define	LTC2672_16BIT_RESO 65535

#define	LTC2672_12BIT_RESO 4095

#define	LTC2672_TOTAL_CHANNELS 5

#define	LTC2672_MAX_CONFIG_MASK 15

#define	LTC2672_MAX_TOGGLE_MASK 31

#define	LTC2672_BIT_SHIFT_12BIT 4

#define	LTC2672_NUM_MUX_SELECTS 22

#define	LTC2672_NUM_CURRENT_SPANS 10

#define	LTC2672_NUM_FAULTS 7

#define	LTC2672_COMMAND32_GENERATE(comm, add, dat) (0xFF << 24) \| (comm << 20) \| (add << 16) \| (dat)

#define	LTC2672_COMMAND24_GENERATE(comm, add, dat) (comm << 20) \| (add << 16) \| (dat)

#define	LTC2672_SPAN_SET(span_code) LTC2672_16_DONT_CARE \| span_code

#define	LTC2672_MUX_SET(mux_code) LTC2672_MUX_DONT_CARE \| mux_code

#define	LTC2672_MUX32_GENERATE(comm, dat) (0xFF << 24) \| (comm << 20) \| (dat)

#define	LTC2672_MUX24_GENERATE(comm, dat) (comm << 20) \| (dat)

Enumerations
enum	ltc2672_commands { LTC2672_CODE_TO_CHANNEL_X, LTC2672_PWRUP_UPD_CHANNEL_X, LTC2672_CODE_TO_CHANNEL_X_PWRUP_UPD_CHANNEL_ALL, LTC2672_CODE_PWRUP_UPD_CHANNEL_X, LTC2672_PWRDWN_CHANNEL_X, LTC2672_PWRDWN_DEV, LTC2672_SPAN_TO_CHANNEL_X, LTC2672_CNFG_CMD, LTC2672_CODE_TO_CHANNEL_ALL, LTC2672_PWRUP_UPD_CHANNEL_ALL, LTC2672_CODE_PWRUP_UPD_CHANNEL_ALL, LTC2672_MON_MUX, LTC2672_TOGGLE_SEL, LTC2672_TOGGLE_GLBL, LTC2672_SPAN_TO_CHANNEL_ALL, LTC2672_NO_OP }

enum	ltc2672_device_id { LTC2672_12, LTC2672_16 }

enum	ltc2672_dac_ch { LTC2672_DAC0, LTC2672_DAC1, LTC2672_DAC2, LTC2672_DAC3, LTC2672_DAC4 }

enum	ltc2672_out_range { LTC2672_OFF, LTC2672_50VREF, LTC2672_100VREF, LTC2672_200VREF, LTC2672_400VREF, LTC2672_800VREF, LTC2672_1600VREF, LTC2672_3200VREF, LTC2672_VMINUS_VREF, LTC2672_4800VREF = 0XF }

enum	ltc2672_mux_commands { LTC2672_MUX_DISABLED, LTC2672_MUX_IOUT0, LTC2672_MUX_IOUT1, LTC2672_MUX_IOUT2, LTC2672_MUX_IOUT3, LTC2672_MUX_IOUT4, LTC2672_MUC_VCC, LTC2672_MUX_VREF = 0x08, LTC2672_MUX_VREF_LO, LTC2672_MUX_DIE_TEMP, LTC2672_MUX_VDD0 = 0x10, LTC2672_MUX_VDD1, LTC2672_MUX_VDD2, LTC2672_MUX_VDD3, LTC2672_MUX_VDD4, LTC2672_MUX_VMINUS = 0X16, LTC2672_MUX_GND, LTC2672_MUX_VOUT0, LTC2672_MUX_VOUT1, LTC2672_MUX_VOUT2, LTC2672_MUX_VOUT3, LTC2672_MUX_VOUT4 }

enum	ltc2672_faults { LTC2672_OPEN_OUT0, LTC2672_OPEN_OUT1, LTC2672_OPEN_OUT2, LTC2672_OPEN_OUT3, LTC2672_OPEN_OUT4, LTC2672_OVER_TEMP, LTC2672_UNUSED, LTC2672_INV_LENGTH }

Functions
int	ltc2672_init (struct ltc2672_dev *, struct ltc2672_init_param )
	Device and communication init function. More...

int	ltc2672_remove (struct ltc2672_dev *)
	Remove resources allocated by the init function. More...

int	ltc2672_transaction (struct ltc2672_dev *device, uint32_t, bool)
	Write raw register value. More...

uint32_t	ltc2672_current_to_code (struct ltc2672_dev *device, uint32_t, enum ltc2672_dac_ch)
	get dac code value from current of a selected DAC channel More...

int	ltc2672_set_code_channel (struct ltc2672_dev *device, uint16_t code, enum ltc2672_dac_ch out_ch)
	sets the dac code for channel More...

int	ltc2672_set_current_channel (struct ltc2672_dev *, uint32_t, enum ltc2672_dac_ch)
	set the current for a selected DAC channel More...

int	ltc2672_set_code_all_channels (struct ltc2672_dev *device, uint16_t code)
	sets the same dac code for all channels More...

int	ltc2672_set_current_all_channels (struct ltc2672_dev *, uint32_t)
	sets the same current for all channels More...

int	ltc2672_set_span_channel (struct ltc2672_dev *, enum ltc2672_out_range, enum ltc2672_dac_ch)
	sets output span for channel More...

int	ltc2672_set_span_all_channels (struct ltc2672_dev *, enum ltc2672_out_range)
	sets the same output span for all channels More...

int	ltc2672_chip_power_down (struct ltc2672_dev *)
	power down ltc2672 More...

int	ltc2672_power_down_channel (struct ltc2672_dev *, enum ltc2672_dac_ch)
	power down a channel More...

int	ltc2672_power_down_all_channels (struct ltc2672_dev *)
	power down ALL channels More...

int	ltc2672_monitor_mux (struct ltc2672_dev *, enum ltc2672_mux_commands)
	configures mux output depending on target measurement More...

int	ltc2672_setup_toggle_channel (struct ltc2672_dev *, enum ltc2672_dac_ch, uint32_t, uint32_t)
	setup toggle parameters for a channel More...

int	ltc2672_enable_toggle_channel (struct ltc2672_dev *, uint32_t)
	enables or disables selected channel/s for toggling More...

int	ltc2672_global_toggle (struct ltc2672_dev *, bool)
	enables or disables global toggle bit More...

int	ltc2672_config_command (struct ltc2672_dev *, uint8_t)
	configures the fault detection bits More...

Detailed Description

Header file of ltc2672 Driver.

Author: JSanBuen (jose..nosp@m.sanb.nosp@m.uenav.nosp@m.entu.nosp@m.ra@an.nosp@m.alog.nosp@m..com)

Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
Neither the name of Analog Devices, Inc. nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.
The use of this software may or may not infringe the patent rights of one or more patent holders. This license does not release you from the requirement that you obtain separate licenses from these patent holders to use this software.
Use of the software either in source or binary form, must be run on or directly connected to an Analog Devices Inc. component.

THIS SOFTWARE IS PROVIDED BY ANALOG DEVICES "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL ANALOG DEVICES BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, INTELLECTUAL PROPERTY RIGHTS, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

Macro Definition Documentation

◆ LTC2672_12BIT_RESO

#define LTC2672_12BIT_RESO 4095

◆ LTC2672_16_DONT_CARE

#define LTC2672_16_DONT_CARE 0xFFF0

◆ LTC2672_16BIT_RESO

#define LTC2672_16BIT_RESO 65535

◆ LTC2672_300MA_CURRENT

#define LTC2672_300MA_CURRENT 300

◆ LTC2672_BASE_CURRENT

#define LTC2672_BASE_CURRENT 3.125

◆ LTC2672_BIT_SHIFT_12BIT

#define LTC2672_BIT_SHIFT_12BIT 4

◆ LTC2672_COMMAND24_GENERATE

#define LTC2672_COMMAND24_GENERATE	(	comm,
		add,
		dat
	)	(comm << 20) \| (add << 16) \| (dat)

◆ LTC2672_COMMAND32_GENERATE

#define LTC2672_COMMAND32_GENERATE	(	comm,
		add,
		dat
	)	(0xFF << 24) \| (comm << 20) \| (add << 16) \| (dat)

◆ LTC2672_DUMMY

#define LTC2672_DUMMY 0xFFFF

◆ LTC2672_FAULT_REG_MASK

#define LTC2672_FAULT_REG_MASK 0xFF0000

◆ LTC2672_MAX_CONFIG_MASK

#define LTC2672_MAX_CONFIG_MASK 15

◆ LTC2672_MAX_TOGGLE_MASK

#define LTC2672_MAX_TOGGLE_MASK 31

◆ LTC2672_MUX24_GENERATE

#define LTC2672_MUX24_GENERATE	(	comm,
		dat
	)	(comm << 20) \| (dat)

◆ LTC2672_MUX32_GENERATE

#define LTC2672_MUX32_GENERATE	(	comm,
		dat
	)	(0xFF << 24) \| (comm << 20) \| (dat)

◆ LTC2672_MUX_DONT_CARE

#define LTC2672_MUX_DONT_CARE 0xFFFE0

◆ LTC2672_MUX_SET

#define LTC2672_MUX_SET ( mux_code ) LTC2672_MUX_DONT_CARE | mux_code

◆ LTC2672_NUM_CURRENT_SPANS

#define LTC2672_NUM_CURRENT_SPANS 10

◆ LTC2672_NUM_FAULTS

#define LTC2672_NUM_FAULTS 7

◆ LTC2672_NUM_MUX_SELECTS

#define LTC2672_NUM_MUX_SELECTS 22

◆ LTC2672_OFF_CURRENT

#define LTC2672_OFF_CURRENT 0

◆ LTC2672_SPAN_SET

#define LTC2672_SPAN_SET ( span_code ) LTC2672_16_DONT_CARE | span_code

◆ LTC2672_TOTAL_CHANNELS

#define LTC2672_TOTAL_CHANNELS 5

◆ LTC2672_VMINUS_FIXED_CURRENT

#define LTC2672_VMINUS_FIXED_CURRENT -80

Enumeration Type Documentation

◆ ltc2672_commands

enum ltc2672_commands

Enumerator
LTC2672_CODE_TO_CHANNEL_X
LTC2672_PWRUP_UPD_CHANNEL_X
LTC2672_CODE_TO_CHANNEL_X_PWRUP_UPD_CHANNEL_ALL
LTC2672_CODE_PWRUP_UPD_CHANNEL_X
LTC2672_PWRDWN_CHANNEL_X
LTC2672_PWRDWN_DEV
LTC2672_SPAN_TO_CHANNEL_X
LTC2672_CNFG_CMD
LTC2672_CODE_TO_CHANNEL_ALL
LTC2672_PWRUP_UPD_CHANNEL_ALL
LTC2672_CODE_PWRUP_UPD_CHANNEL_ALL
LTC2672_MON_MUX
LTC2672_TOGGLE_SEL
LTC2672_TOGGLE_GLBL
LTC2672_SPAN_TO_CHANNEL_ALL
LTC2672_NO_OP

◆ ltc2672_dac_ch

enum ltc2672_dac_ch

Enumerator
LTC2672_DAC0
LTC2672_DAC1
LTC2672_DAC2
LTC2672_DAC3
LTC2672_DAC4

◆ ltc2672_device_id

enum ltc2672_device_id

Enumerator
LTC2672_12
LTC2672_16

◆ ltc2672_faults

enum ltc2672_faults

Enumerator
LTC2672_OPEN_OUT0
LTC2672_OPEN_OUT1
LTC2672_OPEN_OUT2
LTC2672_OPEN_OUT3
LTC2672_OPEN_OUT4
LTC2672_OVER_TEMP
LTC2672_UNUSED
LTC2672_INV_LENGTH

◆ ltc2672_mux_commands

enum ltc2672_mux_commands

Enumerator
LTC2672_MUX_DISABLED
LTC2672_MUX_IOUT0
LTC2672_MUX_IOUT1
LTC2672_MUX_IOUT2
LTC2672_MUX_IOUT3
LTC2672_MUX_IOUT4
LTC2672_MUC_VCC
LTC2672_MUX_VREF
LTC2672_MUX_VREF_LO
LTC2672_MUX_DIE_TEMP
LTC2672_MUX_VDD0
LTC2672_MUX_VDD1
LTC2672_MUX_VDD2
LTC2672_MUX_VDD3
LTC2672_MUX_VDD4
LTC2672_MUX_VMINUS
LTC2672_MUX_GND
LTC2672_MUX_VOUT0
LTC2672_MUX_VOUT1
LTC2672_MUX_VOUT2
LTC2672_MUX_VOUT3
LTC2672_MUX_VOUT4

◆ ltc2672_out_range

enum ltc2672_out_range

Enumerator
LTC2672_OFF
LTC2672_50VREF
LTC2672_100VREF
LTC2672_200VREF
LTC2672_400VREF
LTC2672_800VREF
LTC2672_1600VREF
LTC2672_3200VREF
LTC2672_VMINUS_VREF
LTC2672_4800VREF

Function Documentation

◆ ltc2672_chip_power_down()

int ltc2672_chip_power_down ( struct ltc2672_dev * device )

power down ltc2672

Power down the LTC2672-XX

Parameters

device - ltc2672 descriptor

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

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◆ ltc2672_config_command()

int ltc2672_config_command	(	struct ltc2672_dev *	device,
		uint8_t	mask
	)

configures the fault detection bits

Configures the fault/s to be detected

Parameters

device	- ltc2672 descriptor
mask	- mask that describes desired configuration

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

◆ ltc2672_current_to_code()

uint32_t ltc2672_current_to_code	(	struct ltc2672_dev *	device,
		uint32_t	dac_current,
		enum ltc2672_dac_ch	out_ch
	)

get dac code value from current of a selected DAC channel

Convert current into dac code

Parameters

device	- ltc2672 descriptor
dac_current	- current in uA
out_ch	- DAC channel

Returns: code value

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◆ ltc2672_enable_toggle_channel()

int ltc2672_enable_toggle_channel	(	struct ltc2672_dev *	device,
		uint32_t	mask
	)

enables or disables selected channel/s for toggling

Enable channel/s to toggle

Parameters

device	- ltc2672 descriptor
mask	- mask that describes which channel/s to toggle

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

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◆ ltc2672_global_toggle()

int ltc2672_global_toggle	(	struct ltc2672_dev *	device,
		bool	is_enable
	)

enables or disables global toggle bit

Sets or resets the global toggle bit

Parameters

device	- ltc2672 descriptor
is_enable	- sets or resets the global toggle bit

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

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◆ ltc2672_init()

int ltc2672_init	(	struct ltc2672_dev **	device,
		struct ltc2672_init_param *	init_param
	)

Device and communication init function.

Device and communication init function

Parameters

device	- ltc2672 descriptor to be initialized
init_param	- Initial parameter for descriptor

Returns: 0 in case of success, errno errors otherwise

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◆ ltc2672_monitor_mux()

int ltc2672_monitor_mux	(	struct ltc2672_dev *	device,
		enum ltc2672_mux_commands	mux_comm
	)

configures mux output depending on target measurement

Configure the LTC2672-XX MUX pin output for selected measurement

Parameters

device	- ltc2672 descriptor
mux_comm	- multiplexer command code

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

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◆ ltc2672_power_down_all_channels()

int ltc2672_power_down_all_channels ( struct ltc2672_dev * device )

power down ALL channels

Power down all DAC channels

Parameters

device - ltc2672 descriptor

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

◆ ltc2672_power_down_channel()

int ltc2672_power_down_channel	(	struct ltc2672_dev *	device,
		enum ltc2672_dac_ch	out_ch
	)

power down a channel

Power down a selected DAC channel

Parameters

device	- ltc2672 descriptor
out_ch	- DAC channel output to set

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

◆ ltc2672_remove()

int ltc2672_remove ( struct ltc2672_dev * device )

Remove resources allocated by the init function.

Free resources allocated by the init function

Parameters

device - ltc2672 descriptor

Returns: 0 in case of success, errno errors otherwise

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◆ ltc2672_set_code_all_channels()

int ltc2672_set_code_all_channels	(	struct ltc2672_dev *	device,
		uint16_t	code
	)

sets the same dac code for all channels

Set the dac code for all DAC channels

Parameters

device	- ltc2672 descriptor
code	- The code to be written

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

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◆ ltc2672_set_code_channel()

int ltc2672_set_code_channel	(	struct ltc2672_dev *	device,
		uint16_t	code,
		enum ltc2672_dac_ch	out_ch
	)

sets the dac code for channel

Set the dac code for a selected DAC channel

Parameters

device	- ltc2672 descriptor
code	- The code to be written
out_ch	- channel to set the code

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

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◆ ltc2672_set_current_all_channels()

int ltc2672_set_current_all_channels	(	struct ltc2672_dev *	device,
		uint32_t	current
	)

sets the same current for all channels

Set the current for all DAC channels

Parameters

device	- ltc2672 descriptor
current	- current to set in uA

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

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◆ ltc2672_set_current_channel()

int ltc2672_set_current_channel	(	struct ltc2672_dev *	device,
		uint32_t	current,
		enum ltc2672_dac_ch	out_ch
	)

set the current for a selected DAC channel

Set the current for a selected DAC channel

Parameters

device	- ltc2672 descriptor
current	- current to set in uA
out_ch	- channel to set the current

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

◆ ltc2672_set_span_all_channels()

int ltc2672_set_span_all_channels	(	struct ltc2672_dev *	device,
		enum ltc2672_out_range	ch_span
	)

sets the same output span for all channels

Set the output span for all DAC channels

Parameters

device	- ltc2672 descriptor
ch_span	- max current span

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

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◆ ltc2672_set_span_channel()

int ltc2672_set_span_channel	(	struct ltc2672_dev *	device,
		enum ltc2672_out_range	ch_span,
		enum ltc2672_dac_ch	out_ch
	)

sets output span for channel

Set the output span for a selected DAC channel

Parameters

device	- ltc2672 descriptor
ch_span	- max current span
out_ch	- DAC channel output to set

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

◆ ltc2672_setup_toggle_channel()

int ltc2672_setup_toggle_channel	(	struct ltc2672_dev *	device,
		enum ltc2672_dac_ch	out_ch,
		uint32_t	current_reg_a,
		uint32_t	current_reg_b
	)

setup toggle parameters for a channel

Setup selected channel's reg A and B

Parameters

device	- ltc2672 descriptor
out_ch	- channel to toggle
current_reg_a	- current to write in register A
current_reg_b	- current to write in register B

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

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◆ ltc2672_transaction()

int ltc2672_transaction	(	struct ltc2672_dev *	device,
		uint32_t	comm,
		bool	is_32
	)

Write raw register value.

Configure LTC2672 and get response

Parameters

device	- ltc2672 descriptor
comm	- command byte to send
is_32	- flag if command is 32 bit (True) or 24 bit (False) format

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

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Classes

Macros

Enumerations

Functions

Detailed Description

Macro Definition Documentation

◆ LTC2672_12BIT_RESO

◆ LTC2672_16_DONT_CARE

◆ LTC2672_16BIT_RESO

◆ LTC2672_300MA_CURRENT

◆ LTC2672_BASE_CURRENT

◆ LTC2672_BIT_SHIFT_12BIT

◆ LTC2672_COMMAND24_GENERATE

◆ LTC2672_COMMAND32_GENERATE

◆ LTC2672_DUMMY

◆ LTC2672_FAULT_REG_MASK

◆ LTC2672_MAX_CONFIG_MASK

◆ LTC2672_MAX_TOGGLE_MASK

◆ LTC2672_MUX24_GENERATE

◆ LTC2672_MUX32_GENERATE

◆ LTC2672_MUX_DONT_CARE

◆ LTC2672_MUX_SET

◆ LTC2672_NUM_CURRENT_SPANS

◆ LTC2672_NUM_FAULTS

◆ LTC2672_NUM_MUX_SELECTS

◆ LTC2672_OFF_CURRENT

◆ LTC2672_SPAN_SET

◆ LTC2672_TOTAL_CHANNELS

◆ LTC2672_VMINUS_FIXED_CURRENT

Enumeration Type Documentation

◆ ltc2672_commands

◆ ltc2672_dac_ch

◆ ltc2672_device_id

◆ ltc2672_faults

◆ ltc2672_mux_commands

◆ ltc2672_out_range

Function Documentation

◆ ltc2672_chip_power_down()

◆ ltc2672_config_command()

◆ ltc2672_current_to_code()

◆ ltc2672_enable_toggle_channel()

◆ ltc2672_global_toggle()

◆ ltc2672_init()

◆ ltc2672_monitor_mux()

◆ ltc2672_power_down_all_channels()

◆ ltc2672_power_down_channel()

◆ ltc2672_remove()

◆ ltc2672_set_code_all_channels()

◆ ltc2672_set_code_channel()

◆ ltc2672_set_current_all_channels()

◆ ltc2672_set_current_channel()

◆ ltc2672_set_span_all_channels()

◆ ltc2672_set_span_channel()

◆ ltc2672_setup_toggle_channel()

◆ ltc2672_transaction()