Implementation of MAX30009 driver. More...

#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include "max30009.h"
#include "no_os_alloc.h"
#include "no_os_delay.h"
#include "no_os_error.h"
#include "no_os_print_log.h"

Include dependency graph for max30009.c:

Macros
#define	MAX30009_SPI_READ 0x80

#define	MAX30009_SPI_WRITE 0x00

Functions
int	max30009_reg_read_multiple (struct max30009_dev device, uint8_t reg_addr, uint8_t data, uint32_t len)
	Read multiple bytes from register.

int	max30009_reg_read (struct max30009_dev device, uint8_t reg_addr, uint8_t data)
	Read a single byte from register.

int	max30009_reg_write_multiple (struct max30009_dev device, uint8_t reg_addr, uint8_t data, uint32_t len)
	Write multiple bytes to register.

int	max30009_reg_write (struct max30009_dev *device, uint8_t reg_addr, uint8_t data)
	Write a single byte to register.

int	max30009_reg_update (struct max30009_dev *device, uint8_t reg_addr, uint8_t mask, uint8_t value)
	Update specific bits in a register.

int	max30009_soft_reset (struct max30009_dev *device)
	Perform software reset.

int	max30009_verify_part_id (struct max30009_dev *device)
	Read device part ID.

int	max30009_set_power_mode (struct max30009_dev *device, bool shutdown)
	Set power mode (shutdown or active)

int	max30009_init (struct max30009_dev *device, struct max30009_init_param init_param)
	Initialize the MAX30009 device.

int	max30009_remove (struct max30009_dev *device)
	Remove the MAX30009 device and free resources.

int	max30009_get_status (struct max30009_dev device, struct max30009_status status)
	Get device status.

int	max30009_check_lead_off (struct max30009_dev device, bool leads_on)
	Check lead-off detection status.

int	max30009_fifo_flush (struct max30009_dev *device)
	Flush FIFO contents.

int	max30009_fifo_get_count (struct max30009_dev device, uint16_t count)
	Get FIFO data count.

int	max30009_fifo_get_ovf_count (struct max30009_dev device, uint16_t count)
	Get FIFO overflow data count.

int	max30009_read_fifo_data (struct max30009_dev device, uint8_t data, uint32_t len)
	Read data from FIFO.

int	max30009_fifo_decode_sample (uint8_t raw_data, struct max30009_fifo_sample sample)
	Decode a 3-byte FIFO sample into type and data.

int	max30009_get_fifo_pointers (struct max30009_dev device, uint8_t write_ptr, uint8_t *read_ptr)
	Get FIFO read and write pointers.

int	max30009_set_fifo_watermark (struct max30009_dev *device, uint8_t watermark)
	Set FIFO watermark level.

int	max30009_get_fifo_watermark (struct max30009_dev device, uint8_t watermark)
	Gets the FIFO watermark level of the device.

int	max30009_set_fifo_rollover (struct max30009_dev *device, bool rollover)
	Set FIFO rollover mode.

int	max30009_set_a_full_type (struct max30009_dev *device, bool type)
	Set almost-full interrupt type.

int	max30009_insert_fifo_marker (struct max30009_dev *device)
	Insert marker into FIFO data stream.

int	max30009_clear_fifo_status (struct max30009_dev *device)
	Clear FIFO status flags.

int	max30009_timing_system_reset (struct max30009_dev *device)
	Trigger timing system reset for PLL synchronization.

int	max30009_set_master_mode (struct max30009_dev *device, bool is_master)
	Set master/slave mode for PLL synchronization.

int	max30009_configure_int_pin (struct max30009_dev *device, uint8_t func_cfg, uint8_t out_cfg)
	Configure INT pin function and output.

int	max30009_configure_trig_pin (struct max30009_dev *device, uint8_t input_cfg, uint8_t output_cfg)
	Configure TRIG pin input and output.

int	max30009_configure_i2c_broadcast (struct max30009_dev *device, bool enable, uint8_t broadcast_addr)
	Configure I2C broadcast address.

int	max30009_disable_i2c (struct max30009_dev *device)
	Disable I2C interface (SPI only mode)

int	max30009_pll_set_dividers (struct max30009_dev *device, uint16_t mdiv, enum max30009_pll_ndiv ndiv, enum max30009_pll_kdiv kdiv)
	Configure PLL dividers.

int	max30009_pll_enable (struct max30009_dev *device, bool enable)
	Enable or disable PLL.

int	max30009_pll_set_lock_window (struct max30009_dev *device, bool lock_window)
	Set PLL lock window.

int	max30009_set_clock_source (struct max30009_dev *device, bool use_external, bool use_32768_hz)
	Configure clock source.

int	max30009_clock_fine_tune (struct max30009_dev *device, uint8_t tune_val)
	Fine tune internal clock frequency.

int	max30009_bioz_enable (struct max30009_dev *device, bool enable)
	Enable or disable BioZ measurement.

int	max30009_bioz_i_enable (struct max30009_dev *device, bool enable)
	Enable or disable BioZ I channel.

int	max30009_bioz_q_enable (struct max30009_dev *device, bool enable)
	Enable or disable BioZ Q channel.

int	max30009_bioz_bg_enable (struct max30009_dev *device, bool enable)
	Enable or disable BioZ bandgap.

int	max30009_set_dac_osr (struct max30009_dev *device, enum max30009_dac_osr osr)
	Set DAC oversampling ratio.

int	max30009_set_adc_osr (struct max30009_dev *device, enum max30009_adc_osr osr)
	Set ADC oversampling ratio.

int	max30009_set_digital_hpf (struct max30009_dev *device, enum max30009_dhpf dhpf)
	Set digital high-pass filter.

int	max30009_set_digital_lpf (struct max30009_dev *device, enum max30009_dlpf dlpf)
	Set digital low-pass filter.

int	max30009_set_analog_hpf (struct max30009_dev *device, enum max30009_ahpf ahpf)
	Set analog high-pass filter.

int	max30009_set_drive_mode (struct max30009_dev *device, enum max30009_drive_mode mode)
	Set drive mode (current, voltage, H-bridge, or standby)

int	max30009_set_drive_current_detailed (struct max30009_dev *device, uint8_t idrv_range, uint8_t vdrv_mag)
	Set drive current with detailed control.

int	max30009_enable_external_resistor (struct max30009_dev *device, bool enable)
	Enable or disable external resistor for current drive.

int	max30009_enable_rapid_lead_off (struct max30009_dev *device, bool enable)
	Enable or disable rapid lead-off detection.

int	max30009_enable_fast_start (struct max30009_dev *device, bool enable, bool manual)
	Enable or disable fast start mode.

int	max30009_set_ina_mode (struct max30009_dev *device, bool low_power)
	Set INA (Instrumentation Amplifier) mode.

int	max30009_disable_differential_mode (struct max30009_dev *device, bool disable)
	Disable differential mode (enable single-ended)

int	max30009_set_amp_range (struct max30009_dev *device, uint8_t amp_range)
	Set amplifier range.

int	max30009_set_amp_bandwidth (struct max30009_dev *device, uint8_t amp_bw)
	Set amplifier bandwidth.

int	max30009_enable_external_cap (struct max30009_dev *device, bool enable)
	Enable or disable external capacitor.

int	max30009_enable_dc_restore (struct max30009_dev *device, bool enable)
	Enable or disable DC restore circuit.

int	max30009_enable_drive_reset (struct max30009_dev *device, bool enable)
	Enable or disable drive reset.

int	max30009_enable_dac_reset (struct max30009_dev *device, bool enable)
	Enable or disable DAC reset.

int	max30009_set_comparison_mode (struct max30009_dev *device, uint8_t cmp_mode)
	Set comparison mode for threshold detection.

int	max30009_enable_bioz_threshold (struct max30009_dev *device, bool enable)
	Enable or disable BioZ threshold detection.

int	max30009_set_bioz_thresholds (struct max30009_dev *device, uint8_t low_thresh, uint8_t high_thresh)
	Set BioZ threshold values.

int	max30009_set_demod_clk_phases (struct max30009_dev *device, bool i_clk_phase, bool q_clk_phase)
	Set demodulation clock phases.

int	max30009_enable_ina_chopping (struct max30009_dev *device, bool enable)
	Enable or disable INA chopping.

int	max30009_set_channel_freq_select (struct max30009_dev *device, bool fsel)
	Set channel frequency select.

int	max30009_enable_standby_mode (struct max30009_dev *device, bool keep_rx_on)
	Enable or disable standby mode.

int	max30009_enable_calibration (struct max30009_dev *device, bool enable)
	Enable or disable calibration mode.

int	max30009_enable_calibration_mux (struct max30009_dev *device, bool enable)
	Enable or disable calibration MUX.

int	max30009_calibration_connect_only (struct max30009_dev *device, bool cal_only)
	Set calibration connect-only mode.

int	max30009_set_bia_load_resistor (struct max30009_dev *device, enum max30009_bia_rsel rsel)
	Set BIA (Body Impedance Analysis) load resistor.

int	max30009_enable_bia_bist (struct max30009_dev *device, bool enable)
	Enable or disable BIA BIST (Built-In Self Test)

int	max30009_set_gsr_load_resistor (struct max30009_dev *device, enum max30009_gsr_rsel rsel)
	Set GSR (Galvanic Skin Response) load resistor.

int	max30009_enable_gsr_load (struct max30009_dev *device, bool enable)
	Enable or disable GSR load resistor.

int	max30009_enable_internal_load (struct max30009_dev *device, bool enable)
	Enable or disable internal load resistor.

int	max30009_enable_external_load (struct max30009_dev *device, bool enable)
	Enable or disable external load connection.

int	max30009_assign_electrodes (struct max30009_dev *device, uint8_t bip_assign, uint8_t bin_assign, uint8_t drvp_assign, uint8_t drvn_assign)
	Assign electrodes to measurement channels.

int	max30009_read_bist_error (struct max30009_dev device, uint8_t error)
	Read BIST error value.

int	max30009_lead_off_config (struct max30009_dev *device, bool enable, uint8_t threshold)
	Configure lead-off detection.

int	max30009_set_lead_off_current (struct max30009_dev *device, enum max30009_loff_current current)
	Set lead-off detection current magnitude.

int	max30009_set_lead_off_polarity (struct max30009_dev *device, bool positive)
	Set lead-off detection current polarity.

int	max30009_enable_external_lead_off (struct max30009_dev *device, bool enable)
	Enable or disable external lead-off detection.

int	max30009_enable_drive_oor_detect (struct max30009_dev *device, bool enable)
	Enable or disable drive out-of-range detection.

int	max30009_enable_ultra_low_power_lead_on (struct max30009_dev *device, bool enable)
	Enable or disable ultra-low-power lead-on detection.

int	max30009_get_detailed_lead_status (struct max30009_dev device, struct max30009_lead_status status)
	Get detailed lead detection status.

int	max30009_set_lead_bias (struct max30009_dev *device, enum max30009_rbias_val rbias_value, bool enable_bip, bool enable_bin)
	Configure lead bias resistor and enable for receive electrodes.

int	max30009_set_pll_config (struct max30009_dev device, struct max30009_pll_config pll_config)
	Set complete PLL configuration.

int	max30009_get_pll_config (struct max30009_dev device, struct max30009_pll_config pll_config)
	Get complete PLL configuration.

int	max30009_set_fifo_config (struct max30009_dev device, struct max30009_fifo_config fifo_config)
	Set complete FIFO configuration.

int	max30009_get_fifo_config (struct max30009_dev device, struct max30009_fifo_config fifo_config)
	Get complete FIFO configuration.

int	max30009_set_bioz_config (struct max30009_dev device, struct max30009_bioz_config bioz_config)
	Set complete BioZ configuration.

int	max30009_get_bioz_config (struct max30009_dev device, struct max30009_bioz_config bioz_config)
	Get complete BioZ configuration.

int	max30009_set_bioz_mux_config (struct max30009_dev device, struct max30009_bioz_mux_config mux_config)
	Set complete BioZ MUX configuration.

int	max30009_get_bioz_mux_config (struct max30009_dev device, struct max30009_bioz_mux_config mux_config)
	Get complete BioZ MUX configuration.

int	max30009_set_lead_detect_config (struct max30009_dev device, struct max30009_lead_detect_config lead_config)
	Set complete lead detection configuration.

int	max30009_get_lead_detect_config (struct max30009_dev device, struct max30009_lead_detect_config lead_config)
	Get complete lead detection configuration.

int	max30009_interrupt_config (struct max30009_dev *device, uint8_t int1_mask, uint8_t int2_mask)
	Configure interrupt enables.

int	max30009_enable_interrupt (struct max30009_dev *device, enum max30009_interrupt interrupt, bool enable)
	Enable or disable a specific interrupt.

int	max30009_clear_status (struct max30009_dev *device)
	Clear interrupt status registers.

Detailed Description

Implementation of MAX30009 driver.

Author: Edelweise Escala (edelw.nosp@m.eise.nosp@m..esca.nosp@m.la@a.nosp@m.nalog.nosp@m..com)

SPDX-License-Identifier: BSD-3-Clause

Macro Definition Documentation

◆ MAX30009_SPI_READ

#define MAX30009_SPI_READ 0x80

◆ MAX30009_SPI_WRITE

#define MAX30009_SPI_WRITE 0x00

Function Documentation

◆ max30009_assign_electrodes()

int max30009_assign_electrodes	(	struct max30009_dev *	device,
		uint8_t	bip_assign,
		uint8_t	bin_assign,
		uint8_t	drvp_assign,
		uint8_t	drvn_assign )

Assign electrodes to measurement channels.

Parameters

device	- Device descriptor
bip_assign	- BIP (positive receive) electrode assignment
bin_assign	- BIN (negative receive) electrode assignment
drvp_assign	- DRVP (positive drive) electrode assignment
drvn_assign	- DRVN (negative drive) electrode assignment

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

◆ max30009_bioz_bg_enable()

int max30009_bioz_bg_enable	(	struct max30009_dev *	device,
		bool	enable )

Enable or disable BioZ bandgap.

Parameters

device	- MAX30009 device descriptor
enable	- True to enable bandgap, false to disable

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

◆ max30009_bioz_enable()

int max30009_bioz_enable	(	struct max30009_dev *	device,
		bool	enable )

Enable or disable BioZ measurement.

Parameters

device	- MAX30009 device descriptor
enable	- True to enable BioZ, false to disable

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

◆ max30009_bioz_i_enable()

int max30009_bioz_i_enable	(	struct max30009_dev *	device,
		bool	enable )

Enable or disable BioZ I channel.

Parameters

device	- MAX30009 device descriptor
enable	- True to enable I channel, false to disable

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

◆ max30009_bioz_q_enable()

int max30009_bioz_q_enable	(	struct max30009_dev *	device,
		bool	enable )

Enable or disable BioZ Q channel.

Parameters

device	- MAX30009 device descriptor
enable	- True to enable Q channel, false to disable

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

◆ max30009_calibration_connect_only()

int max30009_calibration_connect_only	(	struct max30009_dev *	device,
		bool	cal_only )

Set calibration connect-only mode.

Parameters

device	- Device descriptor
cal_only	- True for connect-only mode, false for normal

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

◆ max30009_check_lead_off()

int max30009_check_lead_off	(	struct max30009_dev *	device,
		bool *	leads_on )

Check lead-off detection status.

Parameters

device	- MAX30009 device descriptor
leads_on	- True if leads connected

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

◆ max30009_clear_fifo_status()

int max30009_clear_fifo_status ( struct max30009_dev * device )

Clear FIFO status flags.

Parameters

device - Device descriptor

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

◆ max30009_clear_status()

int max30009_clear_status ( struct max30009_dev * device )

Clear interrupt status registers.

Parameters

device - MAX30009 device descriptor

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

Note: Reading the status registers clears them

◆ max30009_clock_fine_tune()

int max30009_clock_fine_tune	(	struct max30009_dev *	device,
		uint8_t	tune_val )

Fine tune internal clock frequency.

Parameters

device	- Device descriptor
tune_val	- Fine tune value (0-31, ±0.78% adjustment range)

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

◆ max30009_configure_i2c_broadcast()

int max30009_configure_i2c_broadcast	(	struct max30009_dev *	device,
		bool	enable,
		uint8_t	broadcast_addr )

Configure I2C broadcast address.

Parameters

device	- Device descriptor
enable	- True to enable broadcast, false to disable
broadcast_addr	- Broadcast address (7-bit, shifted left by 1)

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

Note: Allows multiple devices to respond to broadcast address

◆ max30009_configure_int_pin()

int max30009_configure_int_pin	(	struct max30009_dev *	device,
		uint8_t	func_cfg,
		uint8_t	out_cfg )

Configure INT pin function and output.

Parameters

device	- Device descriptor
func_cfg	- Function configuration (0-3)
out_cfg	- Output configuration (0-3)

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

◆ max30009_configure_trig_pin()

int max30009_configure_trig_pin	(	struct max30009_dev *	device,
		uint8_t	input_cfg,
		uint8_t	output_cfg )

Configure TRIG pin input and output.

Parameters

device	- Device descriptor
input_cfg	- Input configuration (0 or 1)
output_cfg	- Output configuration (0-3)

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

◆ max30009_disable_differential_mode()

int max30009_disable_differential_mode	(	struct max30009_dev *	device,
		bool	disable )

Disable differential mode (enable single-ended)

Parameters

device	- Device descriptor
disable	- True to disable differential mode, false for differential

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

◆ max30009_disable_i2c()

int max30009_disable_i2c ( struct max30009_dev * device )

Disable I2C interface (SPI only mode)

Parameters

device - Device descriptor

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

Note: After disabling I2C, device only responds to SPI

◆ max30009_enable_bia_bist()

int max30009_enable_bia_bist	(	struct max30009_dev *	device,
		bool	enable )

Enable or disable BIA BIST (Built-In Self Test)

Parameters

device	- Device descriptor
enable	- True to enable BIST, false to disable

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

◆ max30009_enable_bioz_threshold()

int max30009_enable_bioz_threshold	(	struct max30009_dev *	device,
		bool	enable )

Enable or disable BioZ threshold detection.

Parameters

device	- Device descriptor
enable	- True to enable threshold detection, false to disable

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

◆ max30009_enable_calibration()

int max30009_enable_calibration	(	struct max30009_dev *	device,
		bool	enable )

Enable or disable calibration mode.

Parameters

device	- Device descriptor
enable	- True to enable calibration, false to disable

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

◆ max30009_enable_calibration_mux()

int max30009_enable_calibration_mux	(	struct max30009_dev *	device,
		bool	enable )

Enable or disable calibration MUX.

Parameters

device	- Device descriptor
enable	- True to enable calibration MUX, false to disable

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

◆ max30009_enable_dac_reset()

int max30009_enable_dac_reset	(	struct max30009_dev *	device,
		bool	enable )

Enable or disable DAC reset.

Parameters

device	- Device descriptor
enable	- True to enable DAC reset, false to disable

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

◆ max30009_enable_dc_restore()

int max30009_enable_dc_restore	(	struct max30009_dev *	device,
		bool	enable )

Enable or disable DC restore circuit.

Parameters

device	- Device descriptor
enable	- True to enable DC restore, false to disable

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

◆ max30009_enable_drive_oor_detect()

int max30009_enable_drive_oor_detect	(	struct max30009_dev *	device,
		bool	enable )

Enable or disable drive out-of-range detection.

Parameters

device	- Device descriptor
enable	- True to enable drive OOR detection, false to disable

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

◆ max30009_enable_drive_reset()

int max30009_enable_drive_reset	(	struct max30009_dev *	device,
		bool	enable )

Enable or disable drive reset.

Parameters

device	- Device descriptor
enable	- True to enable drive reset, false to disable

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

◆ max30009_enable_external_cap()

int max30009_enable_external_cap	(	struct max30009_dev *	device,
		bool	enable )

Enable or disable external capacitor.

Parameters

device	- Device descriptor
enable	- True to enable external capacitor, false to disable

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

◆ max30009_enable_external_lead_off()

int max30009_enable_external_lead_off	(	struct max30009_dev *	device,
		bool	enable )

Enable or disable external lead-off detection.

Parameters

device	- Device descriptor
enable	- True to enable external lead-off detection, false to disable

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

◆ max30009_enable_external_load()

int max30009_enable_external_load	(	struct max30009_dev *	device,
		bool	enable )

Enable or disable external load connection.

Parameters

device	- Device descriptor
enable	- True to enable external load connection, false to disable

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

◆ max30009_enable_external_resistor()

int max30009_enable_external_resistor	(	struct max30009_dev *	device,
		bool	enable )

Enable or disable external resistor for current drive.

Parameters

device	- Device descriptor
enable	- True to enable external resistor, false to disable

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

◆ max30009_enable_fast_start()

int max30009_enable_fast_start	(	struct max30009_dev *	device,
		bool	enable,
		bool	manual )

Enable or disable fast start mode.

Parameters

device	- Device descriptor
enable	- True to enable fast start, false to disable
manual	- True for manual trigger, false for automatic

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

Note: Fast start reduces settling time for faster measurements

◆ max30009_enable_gsr_load()

int max30009_enable_gsr_load	(	struct max30009_dev *	device,
		bool	enable )

Enable or disable GSR load resistor.

Parameters

device	- Device descriptor
enable	- True to enable GSR load, false to disable

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

◆ max30009_enable_ina_chopping()

int max30009_enable_ina_chopping	(	struct max30009_dev *	device,
		bool	enable )

Enable or disable INA chopping.

Parameters

device	- Device descriptor
enable	- True to enable chopping (improves CMRR), false to disable

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

◆ max30009_enable_internal_load()

int max30009_enable_internal_load	(	struct max30009_dev *	device,
		bool	enable )

Enable or disable internal load resistor.

Parameters

device	- Device descriptor
enable	- True to enable internal load, false to disable

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

◆ max30009_enable_interrupt()

int max30009_enable_interrupt	(	struct max30009_dev *	device,
		enum max30009_interrupt	interrupt,
		bool	enable )

Enable or disable a specific interrupt.

Parameters

device	- MAX30009 device descriptor
interrupt	- Interrupt type from max30009_interrupt enum
enable	- True to enable, false to disable

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

◆ max30009_enable_rapid_lead_off()

int max30009_enable_rapid_lead_off	(	struct max30009_dev *	device,
		bool	enable )

Enable or disable rapid lead-off detection.

Parameters

device	- Device descriptor
enable	- True to enable rapid mode, false for normal

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

Note: Rapid mode detects lead-off faster but with higher current consumption

◆ max30009_enable_standby_mode()

int max30009_enable_standby_mode	(	struct max30009_dev *	device,
		bool	keep_rx_on )

Enable or disable standby mode.

Parameters

device	- Device descriptor
keep_rx_on	- True to keep receive path on in standby, false to power down completely

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

Note: Standby mode reduces power consumption while maintaining quick wake-up

◆ max30009_enable_ultra_low_power_lead_on()

int max30009_enable_ultra_low_power_lead_on	(	struct max30009_dev *	device,
		bool	enable )

Enable or disable ultra-low-power lead-on detection.

Parameters

device	- Device descriptor
enable	- True to enable ULP lead-on detection, false to disable

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

◆ max30009_fifo_decode_sample()

int max30009_fifo_decode_sample	(	uint8_t *	raw_data,
		struct max30009_fifo_sample *	sample )

Decode a 3-byte FIFO sample into type and data.

Parameters

raw_data	- 3-byte raw FIFO data
sample	- Pointer to store decoded sample (type and data)

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

FIFO Data Format (24 bits total):

Bits 23-20: TAG[3:0] - Sample type identifier
Bits 19-0: DATA[19:0] - 20-bit signed measurement data

TAG Values:

0x1: BioZ In-Phase sample
0x2: BioZ Quadrature sample
0xE: Marker (0xFFFFFE - all 1s except bit 0)
0xF: Invalid sample (0xFFFFFF - all 1s)

◆ max30009_fifo_flush()

int max30009_fifo_flush ( struct max30009_dev * device )

Flush FIFO contents.

Parameters

device - MAX30009 device descriptor

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

◆ max30009_fifo_get_count()

int max30009_fifo_get_count	(	struct max30009_dev *	device,
		uint16_t *	count )

Get FIFO data count.

Parameters

device	- MAX30009 device descriptor
count	- Pointer to store FIFO data count (0-256)

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

◆ max30009_fifo_get_ovf_count()

int max30009_fifo_get_ovf_count	(	struct max30009_dev *	device,
		uint16_t *	count )

Get FIFO overflow data count.

Parameters

device	- MAX30009 device descriptor
count	- Pointer to store FIFO overflow data count (0-128)

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

◆ max30009_get_bioz_config()

int max30009_get_bioz_config	(	struct max30009_dev *	device,
		struct max30009_bioz_config *	bioz_config )

Get complete BioZ configuration.

Parameters

device	- Device descriptor
bioz_config	- Pointer to store BioZ configuration

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

◆ max30009_get_bioz_mux_config()

int max30009_get_bioz_mux_config	(	struct max30009_dev *	device,
		struct max30009_bioz_mux_config *	mux_config )

Get complete BioZ MUX configuration.

Parameters

device	- Device descriptor
mux_config	- Pointer to store BioZ MUX configuration

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

◆ max30009_get_detailed_lead_status()

int max30009_get_detailed_lead_status	(	struct max30009_dev *	device,
		struct max30009_lead_status *	status )

Get detailed lead detection status.

Parameters

device	- Device descriptor
status	- Pointer to store detailed lead status information

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

◆ max30009_get_fifo_config()

int max30009_get_fifo_config	(	struct max30009_dev *	device,
		struct max30009_fifo_config *	fifo_config )

Get complete FIFO configuration.

Parameters

device	- Device descriptor
fifo_config	- Pointer to store FIFO configuration

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

◆ max30009_get_fifo_pointers()

int max30009_get_fifo_pointers	(	struct max30009_dev *	device,
		uint8_t *	write_ptr,
		uint8_t *	read_ptr )

Get FIFO read and write pointers.

Parameters

device	- Device descriptor
write_ptr	- Pointer to store write pointer value (0-255)
read_ptr	- Pointer to store read pointer value (0-255)

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

◆ max30009_get_fifo_watermark()

int max30009_get_fifo_watermark	(	struct max30009_dev *	device,
		uint8_t *	watermark )

Gets the FIFO watermark level of the device.

Parameters

device	- Device descriptor.
watermark	- Pointer to a variable where the current FIFO watermark level

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

◆ max30009_get_lead_detect_config()

int max30009_get_lead_detect_config	(	struct max30009_dev *	device,
		struct max30009_lead_detect_config *	lead_config )

Get complete lead detection configuration.

Parameters

device	- Device descriptor
lead_config	- Pointer to store lead detection configuration

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

◆ max30009_get_pll_config()

int max30009_get_pll_config	(	struct max30009_dev *	device,
		struct max30009_pll_config *	pll_config )

Get complete PLL configuration.

Parameters

device	- Device descriptor
pll_config	- Pointer to store PLL configuration

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

◆ max30009_get_status()

int max30009_get_status	(	struct max30009_dev *	device,
		struct max30009_status *	status )

Get device status.

Parameters

device	- MAX30009 device descriptor
status	- Pointer to store device status information

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

◆ max30009_init()

int max30009_init	(	struct max30009_dev **	device,
		struct max30009_init_param *	init_param )

Initialize the MAX30009 device.

Parameters

device	- Pointer to the device descriptor pointer
init_param	- Initialization parameters

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

◆ max30009_insert_fifo_marker()

int max30009_insert_fifo_marker ( struct max30009_dev * device )

Insert marker into FIFO data stream.

Parameters

device - Device descriptor

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

Note: Marker is used to identify specific data points in FIFO stream

◆ max30009_interrupt_config()

int max30009_interrupt_config	(	struct max30009_dev *	device,
		uint8_t	int1_mask,
		uint8_t	int2_mask )

Configure interrupt enables.

Parameters

device	- MAX30009 device descriptor
int1_mask	- Interrupt enable mask for INTERRUPT_ENABLE1 register
int2_mask	- Interrupt enable mask for INTERRUPT_ENABLE2 register

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

◆ max30009_lead_off_config()

int max30009_lead_off_config	(	struct max30009_dev *	device,
		bool	enable,
		uint8_t	threshold )

Configure lead-off detection.

Parameters

device	- MAX30009 device descriptor
enable	- True to enable lead-off detection, false to disable
threshold	- Lead-off detection threshold (0-15)

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

◆ max30009_pll_enable()

int max30009_pll_enable	(	struct max30009_dev *	device,
		bool	enable )

Enable or disable PLL.

Parameters

device	- Device descriptor
enable	- True to enable PLL, false to disable

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

◆ max30009_pll_set_dividers()

int max30009_pll_set_dividers	(	struct max30009_dev *	device,
		uint16_t	mdiv,
		enum max30009_pll_ndiv	ndiv,
		enum max30009_pll_kdiv	kdiv )

Configure PLL dividers.

Parameters

device	- Device descriptor
mdiv	- M divider value (0-1023, PLL_CLK = (MDIV+1) × REF_CLK)
ndiv	- N divider value (MAX30009_NDIV_512 or MAX30009_NDIV_1024)
kdiv	- K divider value (MAX30009_KDIV_1 to MAX30009_KDIV_8192)

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

◆ max30009_pll_set_lock_window()

int max30009_pll_set_lock_window	(	struct max30009_dev *	device,
		bool	lock_window )

Set PLL lock window.

Parameters

device	- Device descriptor
lock_window	- True to enable extended lock window, false for normal

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

◆ max30009_read_bist_error()

int max30009_read_bist_error	(	struct max30009_dev *	device,
		uint8_t *	error )

Read BIST error value.

Parameters

device	- Device descriptor
error	- Pointer to store BIST error value

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

◆ max30009_read_fifo_data()

int max30009_read_fifo_data	(	struct max30009_dev *	device,
		uint8_t *	data,
		uint32_t	len )

Read data from FIFO.

Parameters

device	- MAX30009 device descriptor
data	- Buffer to store FIFO data
len	Number of bytes to read from the FIFO.

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

◆ max30009_reg_read()

int max30009_reg_read	(	struct max30009_dev *	device,
		uint8_t	reg_addr,
		uint8_t *	data )

Read a single byte from register.

Parameters

device	- MAX30009 device descriptor
reg_addr	- Register address to read from
data	- Pointer to variable where read byte will be stored

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

◆ max30009_reg_read_multiple()

int max30009_reg_read_multiple	(	struct max30009_dev *	device,
		uint8_t	reg_addr,
		uint8_t *	data,
		uint32_t	len )

Read multiple bytes from register.

Parameters

device	- MAX30009 device descriptor
reg_addr	- Register address to read from
data	- Pointer to buffer where read data will be stored
len	- Number of bytes to read

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

◆ max30009_reg_update()

int max30009_reg_update	(	struct max30009_dev *	device,
		uint8_t	reg_addr,
		uint8_t	mask,
		uint8_t	value )

Update specific bits in a register.

Parameters

device	- MAX30009 device descriptor
reg_addr	- Register address to update
mask	- Bit mask indicating which bits to update
value	- New value for the field, given in raw (unshifted) form. It is shifted into the mask position internally via no_os_field_prep, so callers must NOT pre-shift with no_os_field_prep.

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

◆ max30009_reg_write()

int max30009_reg_write	(	struct max30009_dev *	device,
		uint8_t	reg_addr,
		uint8_t	data )

Write a single byte to register.

Parameters

device	- MAX30009 device descriptor
reg_addr	- Register address to write to
data	- Byte value to be written

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

◆ max30009_reg_write_multiple()

int max30009_reg_write_multiple	(	struct max30009_dev *	device,
		uint8_t	reg_addr,
		uint8_t *	data,
		uint32_t	len )

Write multiple bytes to register.

Parameters

device	- MAX30009 device descriptor
reg_addr	- Register address to write to
data	- Pointer to buffer containing data to be written
len	- Number of bytes to write

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

◆ max30009_remove()

int max30009_remove ( struct max30009_dev * device )

Remove the MAX30009 device and free resources.

Parameters

device - MAX30009 device descriptor

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

◆ max30009_set_a_full_type()

int max30009_set_a_full_type	(	struct max30009_dev *	device,
		bool	type )

Set almost-full interrupt type.

Parameters

device	- Device descriptor
type	- True for asserted when count >= threshold, False for count > threshold

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

◆ max30009_set_adc_osr()

int max30009_set_adc_osr	(	struct max30009_dev *	device,
		enum max30009_adc_osr	osr )

Set ADC oversampling ratio.

Parameters

device	- Device descriptor
osr	- ADC OSR value (MAX30009_ADC_OSR_8 through _1024)

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

◆ max30009_set_amp_bandwidth()

int max30009_set_amp_bandwidth	(	struct max30009_dev *	device,
		uint8_t	amp_bw )

Set amplifier bandwidth.

Parameters

device	- Device descriptor
amp_bw	- Amplifier bandwidth setting (0-3)

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

◆ max30009_set_amp_range()

int max30009_set_amp_range	(	struct max30009_dev *	device,
		uint8_t	amp_range )

Set amplifier range.

Parameters

device	- Device descriptor
amp_range	- Amplifier range setting (0-3)

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

Note: Optimizes ADC dynamic range for different electrode impedances

◆ max30009_set_analog_hpf()

int max30009_set_analog_hpf	(	struct max30009_dev *	device,
		enum max30009_ahpf	ahpf )

Set analog high-pass filter.

Parameters

device	- Device descriptor
ahpf	- Analog HPF setting (BYPASS, or 100Hz-10kHz)

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

◆ max30009_set_bia_load_resistor()

int max30009_set_bia_load_resistor	(	struct max30009_dev *	device,
		enum max30009_bia_rsel	rsel )

Set BIA (Body Impedance Analysis) load resistor.

Parameters

device	- Device descriptor
rsel	- Resistor selection (280, 600, 900, or 5100 ohms)

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

◆ max30009_set_bioz_config()

int max30009_set_bioz_config	(	struct max30009_dev *	device,
		struct max30009_bioz_config *	bioz_config )

Set complete BioZ configuration.

Parameters

device	- Device descriptor
bioz_config	- BioZ configuration structure

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

◆ max30009_set_bioz_mux_config()

int max30009_set_bioz_mux_config	(	struct max30009_dev *	device,
		struct max30009_bioz_mux_config *	mux_config )

Set complete BioZ MUX configuration.

Parameters

device	- Device descriptor
mux_config	- BioZ MUX configuration structure

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

◆ max30009_set_bioz_thresholds()

int max30009_set_bioz_thresholds	(	struct max30009_dev *	device,
		uint8_t	low_thresh,
		uint8_t	high_thresh )

Set BioZ threshold values.

Parameters

device	- Device descriptor
low_thresh	- Low threshold value (0-255)
high_thresh	- High threshold value (0-255)

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

◆ max30009_set_channel_freq_select()

int max30009_set_channel_freq_select	(	struct max30009_dev *	device,
		bool	fsel )

Set channel frequency select.

Parameters

device	- Device descriptor
fsel	- Frequency select bit

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

◆ max30009_set_clock_source()

int max30009_set_clock_source	(	struct max30009_dev *	device,
		bool	use_external,
		bool	use_32768_hz )

Configure clock source.

Parameters

device	- Device descriptor
use_external	- True for external clock, false for internal oscillator
use_32768_hz	- True for 32.768 kHz, false for 32.0 kHz

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

◆ max30009_set_comparison_mode()

int max30009_set_comparison_mode	(	struct max30009_dev *	device,
		uint8_t	cmp_mode )

Set comparison mode for threshold detection.

Parameters

device	- Device descriptor
cmp_mode	- Comparison mode (0-3)

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

◆ max30009_set_dac_osr()

int max30009_set_dac_osr	(	struct max30009_dev *	device,
		enum max30009_dac_osr	osr )

Set DAC oversampling ratio.

Parameters

device	- Device descriptor
osr	- DAC OSR value (MAX30009_DAC_OSR_32, _64, _128, or _256)

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

Note: Affects stimulus frequency: F_BIOZ = PLL_CLK / (KDIV × DAC_OSR)

◆ max30009_set_demod_clk_phases()

int max30009_set_demod_clk_phases	(	struct max30009_dev *	device,
		bool	i_clk_phase,
		bool	q_clk_phase )

Set demodulation clock phases.

Parameters

device	- Device descriptor
i_clk_phase	- I channel clock phase (true for inverted)
q_clk_phase	- Q channel clock phase (true for inverted)

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

◆ max30009_set_digital_hpf()

int max30009_set_digital_hpf	(	struct max30009_dev *	device,
		enum max30009_dhpf	dhpf )

Set digital high-pass filter.

Parameters

device	- Device descriptor
dhpf	- Digital HPF setting

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

Note: Used to remove DC offset from bioimpedance signal

◆ max30009_set_digital_lpf()

int max30009_set_digital_lpf	(	struct max30009_dev *	device,
		enum max30009_dlpf	dlpf )

Set digital low-pass filter.

Parameters

device	- Device descriptor
dlpf	- Digital LPF setting

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

Note: Used for anti-aliasing and noise reduction

◆ max30009_set_drive_current_detailed()

int max30009_set_drive_current_detailed	(	struct max30009_dev *	device,
		uint8_t	idrv_range,
		uint8_t	vdrv_mag )

Set drive current with detailed control.

Parameters

device	- Device descriptor
idrv_range	- Current range setting (0-3)
vdrv_mag	- Voltage magnitude setting (0-3)

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

◆ max30009_set_drive_mode()

int max30009_set_drive_mode	(	struct max30009_dev *	device,
		enum max30009_drive_mode	mode )

Set drive mode (current, voltage, H-bridge, or standby)

Parameters

device	- Device descriptor
mode	- Drive mode (SINE_CURRENT, SINE_VOLTAGE, H_BRIDGE, or STANDBY)

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

◆ max30009_set_fifo_config()

int max30009_set_fifo_config	(	struct max30009_dev *	device,
		struct max30009_fifo_config *	fifo_config )

Set complete FIFO configuration.

Parameters

device	- Device descriptor
fifo_config	- FIFO configuration structure

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

◆ max30009_set_fifo_rollover()

int max30009_set_fifo_rollover	(	struct max30009_dev *	device,
		bool	rollover )

Set FIFO rollover mode.

Parameters

device	- Device descriptor
rollover	- True to enable rollover mode, false to stop when full

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

Note: In rollover mode, new data overwrites oldest data when FIFO is full

◆ max30009_set_fifo_watermark()

int max30009_set_fifo_watermark	(	struct max30009_dev *	device,
		uint8_t	watermark )

Set FIFO watermark level.

Parameters

device	- Device descriptor
watermark	- Watermark level (number of samples before FIFO generates an interrupt).

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

◆ max30009_set_gsr_load_resistor()

int max30009_set_gsr_load_resistor	(	struct max30009_dev *	device,
		enum max30009_gsr_rsel	rsel )

Set GSR (Galvanic Skin Response) load resistor.

Parameters

device	- Device descriptor
rsel	- Resistor selection (25.7k, 101k, 505k, or 1M ohms)

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

◆ max30009_set_ina_mode()

int max30009_set_ina_mode	(	struct max30009_dev *	device,
		bool	low_power )

Set INA (Instrumentation Amplifier) mode.

Parameters

device	- Device descriptor
low_power	- True for low-power mode, false for low-noise mode

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

◆ max30009_set_lead_bias()

int max30009_set_lead_bias	(	struct max30009_dev *	device,
		enum max30009_rbias_val	rbias_value,
		bool	enable_bip,
		bool	enable_bin )

Configure lead bias resistor and enable for receive electrodes.

Parameters

device	- Device descriptor
rbias_value	- Bias resistor value (50M, 100M, 200M ohms)
enable_bip	- True to enable bias on BIP (positive receive) electrode
enable_bin	- True to enable bias on BIN (negative receive) electrode

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

Note: Lead bias pulls electrodes to mid-supply for proper DC operating point

◆ max30009_set_lead_detect_config()

int max30009_set_lead_detect_config	(	struct max30009_dev *	device,
		struct max30009_lead_detect_config *	lead_config )

Set complete lead detection configuration.

Parameters

device	- Device descriptor
lead_config	- Lead detection configuration structure

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

◆ max30009_set_lead_off_current()

int max30009_set_lead_off_current	(	struct max30009_dev *	device,
		enum max30009_loff_current	current )

Set lead-off detection current magnitude.

Parameters

device	- Device descriptor
current	- Lead-off current setting (5nA, 11nA, 22nA, 55nA, or 110nA)

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

◆ max30009_set_lead_off_polarity()

int max30009_set_lead_off_polarity	(	struct max30009_dev *	device,
		bool	positive )

Set lead-off detection current polarity.

Parameters

device	- Device descriptor
positive	- True for positive polarity, false for negative polarity

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

◆ max30009_set_master_mode()

int max30009_set_master_mode	(	struct max30009_dev *	device,
		bool	is_master )

Set master/slave mode for PLL synchronization.

Parameters

device	- Device descriptor
is_master	- True for master mode (generates FCLK_SYS), False for slave mode (uses external FCLK_SYS)

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

◆ max30009_set_pll_config()

int max30009_set_pll_config	(	struct max30009_dev *	device,
		struct max30009_pll_config *	pll_config )

Set complete PLL configuration.

Parameters

device	- Device descriptor
pll_config	- PLL configuration structure

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

◆ max30009_set_power_mode()

int max30009_set_power_mode	(	struct max30009_dev *	device,
		bool	shutdown )

Set power mode (shutdown or active)

Parameters

device	- MAX30009 device descriptor
shutdown	- True to enter shutdown mode, false for active mode

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

◆ max30009_soft_reset()

int max30009_soft_reset ( struct max30009_dev * device )

Perform software reset.

Parameters

device - MAX30009 device descriptor

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

Note: Follows the datasheet-required soft-reset sequence: BIOZ_BG_EN=1, SHDN=0, REF_CLK_SEL=0, PLL_EN=0, wait >=1ms, RESET=1. Re-enable the PLL after soft reset via max30009_pll_enable().

◆ max30009_timing_system_reset()

int max30009_timing_system_reset ( struct max30009_dev * device )

Trigger timing system reset for PLL synchronization.

Parameters

device - Device descriptor

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

Note: Use this after PLL configuration changes to synchronize timing system

◆ max30009_verify_part_id()

int max30009_verify_part_id ( struct max30009_dev * device )

Read device part ID.

Parameters

device - MAX30009 device descriptor

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

Macros

Functions

Detailed Description

Macro Definition Documentation

◆ MAX30009_SPI_READ

◆ MAX30009_SPI_WRITE

Function Documentation

◆ max30009_assign_electrodes()

◆ max30009_bioz_bg_enable()

◆ max30009_bioz_enable()

◆ max30009_bioz_i_enable()

◆ max30009_bioz_q_enable()

◆ max30009_calibration_connect_only()

◆ max30009_check_lead_off()

◆ max30009_clear_fifo_status()

◆ max30009_clear_status()

◆ max30009_clock_fine_tune()

◆ max30009_configure_i2c_broadcast()

◆ max30009_configure_int_pin()

◆ max30009_configure_trig_pin()

◆ max30009_disable_differential_mode()

◆ max30009_disable_i2c()

◆ max30009_enable_bia_bist()

◆ max30009_enable_bioz_threshold()

◆ max30009_enable_calibration()

◆ max30009_enable_calibration_mux()

◆ max30009_enable_dac_reset()

◆ max30009_enable_dc_restore()

◆ max30009_enable_drive_oor_detect()

◆ max30009_enable_drive_reset()

◆ max30009_enable_external_cap()

◆ max30009_enable_external_lead_off()

◆ max30009_enable_external_load()

◆ max30009_enable_external_resistor()

◆ max30009_enable_fast_start()

◆ max30009_enable_gsr_load()

◆ max30009_enable_ina_chopping()

◆ max30009_enable_internal_load()

◆ max30009_enable_interrupt()

◆ max30009_enable_rapid_lead_off()

◆ max30009_enable_standby_mode()

◆ max30009_enable_ultra_low_power_lead_on()

◆ max30009_fifo_decode_sample()

◆ max30009_fifo_flush()

◆ max30009_fifo_get_count()

◆ max30009_fifo_get_ovf_count()

◆ max30009_get_bioz_config()

◆ max30009_get_bioz_mux_config()

◆ max30009_get_detailed_lead_status()

◆ max30009_get_fifo_config()

◆ max30009_get_fifo_pointers()

◆ max30009_get_fifo_watermark()

◆ max30009_get_lead_detect_config()

◆ max30009_get_pll_config()

◆ max30009_get_status()

◆ max30009_init()

◆ max30009_insert_fifo_marker()

◆ max30009_interrupt_config()

◆ max30009_lead_off_config()

◆ max30009_pll_enable()

◆ max30009_pll_set_dividers()

◆ max30009_pll_set_lock_window()

◆ max30009_read_bist_error()

◆ max30009_read_fifo_data()

◆ max30009_reg_read()

◆ max30009_reg_read_multiple()

◆ max30009_reg_update()

◆ max30009_reg_write()

◆ max30009_reg_write_multiple()

◆ max30009_remove()

◆ max30009_set_a_full_type()

◆ max30009_set_adc_osr()

◆ max30009_set_amp_bandwidth()

◆ max30009_set_amp_range()

◆ max30009_set_analog_hpf()

◆ max30009_set_bia_load_resistor()

◆ max30009_set_bioz_config()

◆ max30009_set_bioz_mux_config()

◆ max30009_set_bioz_thresholds()

◆ max30009_set_channel_freq_select()