Implementation of AD9250 Driver. More...

#include <stdlib.h>
#include "ad9250.h"
#include "no_os_error.h"
#include "no_os_alloc.h"

Include dependency graph for ad9250.c:

Functions
int32_t	ad9250_set_bits_to_reg (struct ad9250_dev *dev, uint32_t register_address, uint8_t bits_value, uint8_t mask)
	Sets a bit/group of bits inside a register without modifying other bits. More...

int32_t	ad9250_is_shadow_register (int32_t register_address)
	Checks if the register is shadowed. More...

int32_t	ad9250_setup (struct ad9250_dev **device, struct ad9250_init_param init_param)
	Configures the device. More...

int32_t	ad9250_remove (struct ad9250_dev *dev)
	Free the resources allocated by ad9250_setup(). More...

int32_t	ad9250_read (struct ad9250_dev *dev, int32_t register_address)
	Reads the value of the selected register. More...

int32_t	ad9250_write (struct ad9250_dev *dev, int32_t register_address, int32_t register_value)
	Writes a value to the selected register. More...

int32_t	ad9250_transfer (struct ad9250_dev *dev)
	Initiates a transfer and waits for the operation to end. Note: This function may be called after a shadowed register was written, so that the internal update can actually take place. More...

int32_t	ad9250_soft_reset (struct ad9250_dev *dev)
	Resets all registers to their default values. More...

int32_t	ad9250_chip_pwr_mode (struct ad9250_dev *dev, int32_t mode)
	Configures the power mode of the chip. More...

int32_t	ad9250_select_channel_for_config (struct ad9250_dev *dev, int32_t channel)
	Selects a channel as the current channel for further configurations. More...

int32_t	ad9250_test_mode (struct ad9250_dev *dev, int32_t mode)
	Sets the ADC's test mode. More...

int32_t	ad9250_offset_adj (struct ad9250_dev *dev, int32_t adj)
	Sets the offset adjustment. More...

int32_t	ad9250_output_disable (struct ad9250_dev *dev, int32_t en)
	Disables (1) or enables (0) the data output. Note: This function modifies a shadowed register, therefore a call of ad9250_transfer() is required for the internal update to take place. More...

int32_t	ad9250_output_invert (struct ad9250_dev *dev, int32_t invert)
	Activates the inverted (1) or normal (0) output mode. Note: This function modifies a shadowed register, therefore a call of ad9250_transfer() is required for the internal update to take place. More...

int32_t	ad9250_output_format (struct ad9250_dev *dev, int32_t format)
	Specifies the output format. Note: This function modifies a shadowed register, therefore a call of ad9250_transfer() is required for the internal update to take place. More...

int32_t	ad9250_reset_pn9 (struct ad9250_dev *dev, int32_t rst)
	Sets (1) or clears (0) the reset short PN sequence bit(PN9). More...

int32_t	ad9250_reset_pn23 (struct ad9250_dev *dev, int32_t rst)
	Sets (1) or clears (0) the reset long PN sequence bit(PN23). More...

int32_t	ad9250_set_user_pattern (struct ad9250_dev *dev, int32_t pattern_no, int32_t user_pattern)
	Configures a User Test Pattern. More...

int32_t	ad9250_bist_enable (struct ad9250_dev *dev, int32_t enable)
	Enables the Build-In-Self-Test. More...

int32_t	ad9250_bist_reset (struct ad9250_dev *dev, int32_t reset)
	Resets the Build-In-Self-Test. More...

int32_t	ad9250_jesd204b_set_frames (struct ad9250_dev *dev, int32_t k_frames)
	Sets number of frames per multiframe (K). More...

int32_t	ad9250_jesd204b_setup (struct ad9250_dev *dev)
	Configures the JESD204B interface. More...

int32_t	ad9250_jesd204b_pwr_mode (struct ad9250_dev *dev, int32_t mode)
	Configures the power mode of the JESD204B data transmit block. More...

int32_t	ad9250_jesd204b_select_test_injection_point (struct ad9250_dev *dev, int32_t inj_point)
	Selects the point in the processing path of a lane, where the test data will be inserted. More...

int32_t	ad9250_jesd204b_test_mode (struct ad9250_dev *dev, int32_t test_mode)
	Selects a JESD204B test mode. More...

int32_t	ad9250_jesd204b_invert_logic (struct ad9250_dev *dev, int32_t invert)
	Inverts the logic of JESD204B bits. More...

int32_t	ad9250_fast_detect_setup (struct ad9250_dev *dev)
	Configures the Fast-Detect module. More...

int32_t	ad9250_dcc_enable (struct ad9250_dev *dev, int32_t enable)
	Enables DC correction for use in the output data signal path. More...

int32_t	ad9250_dcc_bandwidth (struct ad9250_dev *dev, int32_t bw)
	Selects the bandwidth value for the DC correction circuit. More...

int32_t	ad9250_dcc_freeze (struct ad9250_dev *dev, int32_t freeze)
	Freezes DC correction value. More...

Variables
const int32_t	shadow_regs [SHADOW_REGISTER_COUNT]

Detailed Description

Implementation of AD9250 Driver.

Author: DNechita (Dan.N.nosp@m.echi.nosp@m.ta@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.

THIS SOFTWARE IS PROVIDED BY ANALOG DEVICES, INC. “AS IS” AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL ANALOG DEVICES, INC. BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 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.

Function Documentation

◆ ad9250_bist_enable()

int32_t ad9250_bist_enable	(	struct ad9250_dev *	dev,
		int32_t	enable
	)

Enables the Build-In-Self-Test.

Parameters

dev	- The device structure.
enable	- enable option.

Returns: Returns negative error code or the state of the enable bit.

◆ ad9250_bist_reset()

int32_t ad9250_bist_reset	(	struct ad9250_dev *	dev,
		int32_t	reset
	)

Resets the Build-In-Self-Test.

Parameters

dev	- The device structure.
reset	- reset option.

Returns: Returns negative error code or the state of the reset bit.

◆ ad9250_chip_pwr_mode()

int32_t ad9250_chip_pwr_mode	(	struct ad9250_dev *	dev,
		int32_t	mode
	)

Configures the power mode of the chip.

Parameters

dev	- The device structure.
mode	- The power mode. Example: 00 � normal operation(default); 01 � power-down; 10 - standby.

Returns: Returns negative error code or the set power mode.

◆ ad9250_dcc_bandwidth()

int32_t ad9250_dcc_bandwidth	(	struct ad9250_dev *	dev,
		int32_t	bw
	)

Selects the bandwidth value for the DC correction circuit.

Parameters

dev	- The device structure.
bw	- DC correction bandwidth. Example: 0 - 2387.32 Hz at Sample Rate of 245.76 MSPS 1 - 1193.66 Hz at Sample Rate of 245.76 MSPS ... 13 - 0.29 Hz at Sample Rate of 245.76 MSPS

Returns: Returns negative error code or the state of the bandwidth bits.

◆ ad9250_dcc_enable()

int32_t ad9250_dcc_enable	(	struct ad9250_dev *	dev,
		int32_t	enable
	)

Enables DC correction for use in the output data signal path.

Parameters

dev	- The device structure.
enable	- enable option. Example: 0 - correction off 1 - correction on

Returns: Returns negative error code or the status of the enable bit.

◆ ad9250_dcc_freeze()

int32_t ad9250_dcc_freeze	(	struct ad9250_dev *	dev,
		int32_t	freeze
	)

Freezes DC correction value.

Parameters

dev	- The device structure.
freeze	- freeze option. Example: 0 - calculates the correction value 1 - freezes the DC correction at its current state

Returns: Returns negative error code or the status of the freeze bit.

◆ ad9250_fast_detect_setup()

int32_t ad9250_fast_detect_setup ( struct ad9250_dev * dev )

Configures the Fast-Detect module.

Parameters

dev	- The device structure.

Returns: Returns negative error code or 0 in case of success.

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◆ ad9250_is_shadow_register()

int32_t ad9250_is_shadow_register ( int32_t register_address )

Checks if the register is shadowed.

Parameters

register_address - The address of the register to be checked.

Returns: Returns the index of the shadow register or 0 if the register is not shadowed.

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◆ ad9250_jesd204b_invert_logic()

int32_t ad9250_jesd204b_invert_logic	(	struct ad9250_dev *	dev,
		int32_t	invert
	)

Inverts the logic of JESD204B bits.

Parameters

dev	- The device structure.
invert	- Invert option. Example: 1 - Activates the inverted mode 0 - Activates the normal mode

Returns: Returns negative error code or the set mode.

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◆ ad9250_jesd204b_pwr_mode()

int32_t ad9250_jesd204b_pwr_mode	(	struct ad9250_dev *	dev,
		int32_t	mode
	)

Configures the power mode of the JESD204B data transmit block.

Parameters

dev	- The device structure.
mode	- The power mode. Example: 00 � normal operation(default); 01 � power-down; 10 - standby.

Returns: Returns negative error code or the set power mode.

◆ ad9250_jesd204b_select_test_injection_point()

int32_t ad9250_jesd204b_select_test_injection_point	(	struct ad9250_dev *	dev,
		int32_t	inj_point
	)

Selects the point in the processing path of a lane, where the test data will be inserted.

Parameters

dev	- The device structure.
inj_point	- The point in the processing path of a lane. Example: 1 - a 10-bit data is inserted at 8B/10B ENCODER output 2 - a 8-bit at scrambler input

Returns: Returns negative error code or the status of the data injection point bit.

◆ ad9250_jesd204b_set_frames()

int32_t ad9250_jesd204b_set_frames	(	struct ad9250_dev *	dev,
		int32_t	k_frames
	)

Sets number of frames per multiframe (K).

Parameters

dev	- The device structure.
k_frames	- Number of frames. Must be a multiple of 4. Range: Ceil(17/F) to 32, where F - is the number of octets per frame.

Returns: Returns negative error code or actual number of frames that can be set.

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◆ ad9250_jesd204b_setup()

int32_t ad9250_jesd204b_setup ( struct ad9250_dev * dev )

Configures the JESD204B interface.

Parameters

dev	- The device structure.

Returns: Returns negative error code or 0 in case of success.

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◆ ad9250_jesd204b_test_mode()

int32_t ad9250_jesd204b_test_mode	(	struct ad9250_dev *	dev,
		int32_t	test_mode
	)

Selects a JESD204B test mode.

Parameters

dev	- The device structure.
test_mode	- mode option. Example: 0 - test mode disabled 1 - alternating checker board 2 - 1/0 word toggle 3 - PN23 sequence 4 - PN9 sequence 5 - continuous/repeat user test mode 6 - single user test mode 7 - reserved 8 - modified RPAT test sequence 12 - PN7 sequence 13 - PN15 sequence

Returns: Returns the set test mode or negative error code.

◆ ad9250_offset_adj()

int32_t ad9250_offset_adj	(	struct ad9250_dev *	dev,
		int32_t	adj
	)

Sets the offset adjustment.

Parameters

dev	- The device structure.
adj	- The offset adjust value in LSBs from +31 to -32.

Returns: Returns negative error code or the set offset adjustment.

◆ ad9250_output_disable()

int32_t ad9250_output_disable	(	struct ad9250_dev *	dev,
		int32_t	en
	)

Disables (1) or enables (0) the data output. Note: This function modifies a shadowed register, therefore a call of ad9250_transfer() is required for the internal update to take place.

Parameters

dev	- The device structure.
en	- Enable option. Example: 1 - Disables the data output; 0 - Enables the data output(default).

Returns: Returns negative error code or the output disable state.

◆ ad9250_output_format()

int32_t ad9250_output_format	(	struct ad9250_dev *	dev,
		int32_t	format
	)

Specifies the output format. Note: This function modifies a shadowed register, therefore a call of ad9250_transfer() is required for the internal update to take place.

Parameters

dev	- The device structure.
format	- The output format. Example: 0 � offset binary(default); 1 � two's complement;

Returns: Returns negative error code or the set output format.

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◆ ad9250_output_invert()

int32_t ad9250_output_invert	(	struct ad9250_dev *	dev,
		int32_t	invert
	)

Activates the inverted (1) or normal (0) output mode. Note: This function modifies a shadowed register, therefore a call of ad9250_transfer() is required for the internal update to take place.

Parameters

dev	- The device structure.
invert	- Invert option. Example: 1 - Activates the inverted output mode; 0 - Activates the normal output mode(default).

Returns: Returns negative error code or the set output mode.

◆ ad9250_read()

int32_t ad9250_read	(	struct ad9250_dev *	dev,
		int32_t	register_address
	)

Reads the value of the selected register.

Parameters

dev	- The device structure.
register_address	- The address of the register to read.

Returns: reg_value - The register's value or negative error code.

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◆ ad9250_remove()

int32_t ad9250_remove ( struct ad9250_dev * dev )

Free the resources allocated by ad9250_setup().

Parameters

dev	- The device structure.

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

◆ ad9250_reset_pn23()

int32_t ad9250_reset_pn23	(	struct ad9250_dev *	dev,
		int32_t	rst
	)

Sets (1) or clears (0) the reset long PN sequence bit(PN23).

Parameters

dev	- The device structure.
rst	- Enable option. Example: 1 - The PN sequence is held in reset; 0 - The PN sequence resumes from the seed value(0x3AFF).

Returns: Returns negative error code or the set PN23 status.

◆ ad9250_reset_pn9()

int32_t ad9250_reset_pn9	(	struct ad9250_dev *	dev,
		int32_t	rst
	)

Sets (1) or clears (0) the reset short PN sequence bit(PN9).

Parameters

dev	- The device structure.
rst	- Enable option. Example: 1 - The PN sequence is held in reset; 0 - The PN sequence resumes from the seed value(0x92).

Returns: Returns negative error code or the set PN9 status.

◆ ad9250_select_channel_for_config()

int32_t ad9250_select_channel_for_config	(	struct ad9250_dev *	dev,
		int32_t	channel
	)

Selects a channel as the current channel for further configurations.

Parameters

dev	- The device structure.
channel	- Channel option. Example 1 - channel A 2 - channel B 3 - channel A and channel B

Returns: Returns negative error code or the selected channel.

◆ ad9250_set_bits_to_reg()

int32_t ad9250_set_bits_to_reg	(	struct ad9250_dev *	dev,
		uint32_t	register_address,
		uint8_t	bits_value,
		uint8_t	mask
	)

Sets a bit/group of bits inside a register without modifying other bits.

Parameters

dev	- The device structure.
register_address	- The address of the register to be written.
bits_value	- The value of the bit/bits.
mask	- The bit/bits position in the register.

Returns: Returns negative error code or 0 in case of success.

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◆ ad9250_set_user_pattern()

int32_t ad9250_set_user_pattern	(	struct ad9250_dev *	dev,
		int32_t	pattern_no,
		int32_t	user_pattern
	)

Configures a User Test Pattern.

Parameters

dev	- The device structure.
pattern_no	- Selects the patterns to be configured. Range 1..4.
user_pattern	- Users's pattern.

Returns: Returns negative error code or the selected user pattern.

◆ ad9250_setup()

int32_t ad9250_setup	(	struct ad9250_dev **	device,
		struct ad9250_init_param	init_param
	)

Configures the device.

Parameters

device	- The device structure.
init_param	- The structure that contains the device initial parameters.

Returns: Returns negative error code or 0 in case of success.

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◆ ad9250_soft_reset()

int32_t ad9250_soft_reset ( struct ad9250_dev * dev )

Resets all registers to their default values.

Parameters

dev	- The device structure.

Returns: Returns negative error code or 0 in case of success.

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◆ ad9250_test_mode()

int32_t ad9250_test_mode	(	struct ad9250_dev *	dev,
		int32_t	mode
	)

Sets the ADC's test mode.

Parameters

dev	- The device structure.
mode	- ADC test mode. Example: 0 -> off(default) 1 -> midscale short 2 -> +FS short 3 -> -FS short 4 -> checkerboard output 5 -> PN sequence long 6 -> PN 9 short 7 -> one/zero word toggle 8 -> user test mode 9 to 14 -> unused 15 -> ramp output

Returns: Returns the set test mode or negative error code.

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◆ ad9250_transfer()

int32_t ad9250_transfer ( struct ad9250_dev * dev )

Initiates a transfer and waits for the operation to end. Note: This function may be called after a shadowed register was written, so that the internal update can actually take place.

Parameters

dev	- The device structure.

Returns: Negative error code or 0 in case of success.

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◆ ad9250_write()

int32_t ad9250_write	(	struct ad9250_dev *	dev,
		int32_t	register_address,
		int32_t	register_value
	)

Writes a value to the selected register.

Parameters

dev	- The device structure.
register_address	- The address of the register to write to.
register_value	- The value to write to the register.

Returns: Returns 0 in case of success or negative error code.

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Variable Documentation

◆ shadow_regs

const int32_t shadow_regs[SHADOW_REGISTER_COUNT]

Initial value:

Functions

Variables

Detailed Description

Function Documentation

◆ ad9250_bist_enable()

◆ ad9250_bist_reset()

◆ ad9250_chip_pwr_mode()

◆ ad9250_dcc_bandwidth()

◆ ad9250_dcc_enable()

◆ ad9250_dcc_freeze()

◆ ad9250_fast_detect_setup()

◆ ad9250_is_shadow_register()

◆ ad9250_jesd204b_invert_logic()

◆ ad9250_jesd204b_pwr_mode()

◆ ad9250_jesd204b_select_test_injection_point()

◆ ad9250_jesd204b_set_frames()

◆ ad9250_jesd204b_setup()

◆ ad9250_jesd204b_test_mode()

◆ ad9250_offset_adj()

◆ ad9250_output_disable()

◆ ad9250_output_format()

◆ ad9250_output_invert()

◆ ad9250_read()

◆ ad9250_remove()

◆ ad9250_reset_pn23()

◆ ad9250_reset_pn9()

◆ ad9250_select_channel_for_config()

◆ ad9250_set_bits_to_reg()

◆ ad9250_set_user_pattern()

◆ ad9250_setup()

◆ ad9250_soft_reset()

◆ ad9250_test_mode()

◆ ad9250_transfer()

◆ ad9250_write()

Variable Documentation

◆ shadow_regs