Analog Devices EVAL-ADPD7000 Manuel utilisateur

User Guide | EVAL-ADPD7000

UG-2108

Evaluating the ADPD7000 Multimodal Sensor Front End

PLEASE SEE THE LAST PAGE FOR AN IMPORTANT

WARNING AND LEGAL TERMS AND CONDITIONS. Rev. 0 | 1 of 24

FEATURES

►Board supports ADPD7000 population

►6 separately driven LEDs are included: 3 green LEDs around the

center and 3 packaged LEDs, each of which includes 1 infrared

LED and 1 red LED

►4 channels of photodiode input: two channels with a single PD

and two channels with a double PD

►Works with the VSM Client evaluation software allowing the

following:

►Time domain graphing and logging

►Selection of supported functions, including PPG, BIA, EDA,

and ECG

►Real-time data display with various combinations of the sup-

ported functions

EVALUATION KIT CONTENTS

►EVAL-ADPD7000Z evaluation board

►EVAL-VSMUCZ microcontroller board

►Soft cable to connect the EVAL-ADPD7000Z and EVAL-

VSMUCZ

ADDITIONAL EQUIPMENT NEEDED

►USB to Type-C cable

►3.7 V battery

ONLINE RESOURCES

►ADPD7000 data sheet

►VSM Client software (available on the EVAL-ADPD7000 product

page)

GENERAL DESCRIPTION

This user guide describes the operation of the EVAL-ADPD7000Z

demonstration kit, which is an evaluation module for the

ADPD7000.

The ADPD7000 is a fully Integrated analog front end (AFE) for

wearable vital signal monitoring (VSM) devices. The key functions

of the ADPD7000 include photoplethysmography (PPG), electrocar-

diogram (ECG), body impedance analysis (BIA), and electrodermal

activity (EDA).

This demonstration kit includes both software and hardware. The

EVAL-ADPD7000Z can evaluate the AFE feature and verify the

system design based on the AFE. According to the requirements of

the application, the user can use a cable connection or Bluetooth

connection to establish communication between the PC and the

EVAL-ADPD7000Z demonstration kit.

This document also describes an example configuration of the

different functions of the ADPD7000.

For full details on the ADPD7000, see the ADPD7000 data sheet,

which must be consulted in conjunction with this user guide when

using the EVAL-ADPD7000Z.

EVALUATION BOARD PHOTOGRAPH

Figure 1. EVAL-ADPD7000Z Evaluation Board Photograph

User Guide EVAL-ADPD7000

TABLE OF CONTENTS

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Features................................................................ 1

Evaluation Kit Contents......................................... 1

Additional Equipment Needed............................... 1

Online Resources.................................................. 1

General Description...............................................1

Evaluation Board Photograph................................1

Preparation and Setup...........................................3

EVAL-ADPD7000Z Components........................3

PCB Connection.................................................3

Software Installation.............................................. 4

Power on the System............................................ 5

Power on the Cable Connection ........................5

Power on the Bluetooth Connection...................5

Add Device via Bluetooth................................... 5

VSM Client.............................................................7

Find the Device on the VSM Client.................... 7

Configure the Device..........................................8

Receive the Data................................................9

Human Measurement.......................................... 11

PPG Measurement........................................... 11

ECG Measurement...........................................11

BIA Measurement.............................................12

EDA Measurement...........................................12

Evaluation Board Schematics and Artwork......... 14

REVISION HISTORY

5/2023—Revision 0: Initial Version

User Guide EVAL-ADPD7000

PREPARATION AND SETUP

analog.com Rev. 0 | 3 of 24

EVAL-ADPD7000Z COMPONENTS

Figure 2 shows the components needed for evaluation.

Figure 2. EVAL-ADPD7000Z Demonstration Kit Components

PCB CONNECTION

Take the following steps to connect the printed circuit board (PCB).

1. Connect the battery to the connector on the EVAL-VSMUCZ

board. Ensure that the S1′ switch is OFF (see Figure 3).

Figure 3. Battery Connected to the EVAL-ADPD7000Z

2. Connect the EVAL-VSMUCZ board to the EVAL-ADPD7000Z

(see Figure 4 and Figure 5). Ensure that the EVAL-VSMUCZ

and EVAL-ADPD7000Z have the same pin order, and that the

pin numbers match.

Figure 4. EVAL-VSMUCZ Connection

Figure 5. EVAL-ADPD7000Z Connection

The blue tape shown in Figure 5 is used for electrical isolation

between the board and the skin.

User Guide EVAL-ADPD7000

SOFTWARE INSTALLATION

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The VSM Client software is the graphical user interface (GUI)

used for the EVAL-ADPD7000Z demonstration kit. The VSM Client

software is available on the EVAL-ADPD7000Z product page.

Take the following steps to install the VSM Client software:

1. Download and launch the VSM Client installer.

2. Read the software license agreement and click I Agree (see

Figure 6).

Figure 6. License Agreement

3. Select Only for me and click Next> (see Figure 7). Do not

select Anyone who uses this computer (all users) because

this option can cause the installation to suspend or fail.

Figure 7. Choose Installation Options

4. Click Browse... to choose the installation location and then click

Next > (see Figure 8).

Figure 8. Choose Installation Location

5. When the installation is complete, click Finish to complete the

installation process (see Figure 9).

Figure 9. Installation Complete

User Guide EVAL-ADPD7000

POWER ON THE SYSTEM

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After preparing the hardware and installing the software, the EVAL-

ADPD7000Z is ready to power on.

POWER ON THE CABLE CONNECTION

Connect the USB to the Type-C cable from the PC to J5 on the

EVAL-VSMUCZ to power on the EVAL-ADPD7000Z automatically.

The two indicator lights on the EVAL-VSMUCZ (DS1 and DS4) turn

on. If the S1′ switch in Figure 10 is set to on, the battery is charged

by the PC. Figure 10 shows the cable connection.

Figure 10. Cable Connection

POWER ON THE BLUETOOTH CONNECTION

Take the following steps to power on the system without the USB

cable:

1. On the EVAL-VSMUCZ, set the S1' switch to On. The stand-

alone DS1' indicator light emitting diode (LED) in Figure 10

turns on.

2. Press (for about 2 seconds) the S3 button on the EVAL-

VSMUCZ to power on the system. The two indicator lights

on the EVAL-VSMUCZ (DS1 and DS4) turn on.

ADD DEVICE VIA BLUETOOTH

Take the following steps to add the EVAL-VSMUCZ via Bluetooth

(these steps are shown using Windows® 10):

1. Click the Bluetooth Devices icon in the system tray and select

Add a Bluetooth Device (see Figure 11).

Figure 11. Add a Bluetooth Device

2. The Settings window opens (see Figure 12). Under Bluetooth

& other devices, click Add Bluetooth or other device.

Figure 12. Add Bluetooth Device from Settings Window

3. The Add a device window opens (see Figure 13). Select

Bluetooth.

Figure 13. Choose Bluetooth Device Type

User Guide EVAL-ADPD7000

POWER ON THE SYSTEM

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4. Select the EVAL-VSMUCZ from the list of devices (in this

example, Figure 14 shows the device as B8-7425A2). The

device is now connected (see Figure 15).

Figure 14. Select EVAL-VSMUCZ

Figure 15. Device Connected

After adding the EVAL-VSMUCZ, two Bluetooth serial ports

appear in the Device Manager window. For example, the

Standard Serial over Bluetooth link (COM10) and Standard

Serial over Bluetooth link (COM11) shown in Figure 16. The

user selects one of these two ports in the VSM Client software.

Figure 16. Device Manager

User Guide EVAL-ADPD7000

VSM CLIENT

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FIND THE DEVICE ON THE VSM CLIENT

Take the following steps to find the device on the VSM Client

software:

1. After installing the VSM Client, power on the EVAL-ADPD7000Z

and launch the VSM Client.

2. Click Click to connect in the start interface of the VSM Client

(see Figure 17).

Figure 17. Start Interface of the VSM Client

3. In the Hardware Connection pane, select the communication

(COM) port according to the connection method as follows:

a. If using a Bluetooth connection, two ports are available. In

the example shown in Figure 18, these ports are COM156

Microsoft BTHENUM and COM157 Microsoft BTHENUM.

Select one of the two ports. If the following steps cannot

be completed successfully with the selected port, select a

different port.

Figure 18. Bluetooth Connection COM Port

b. If using a cable connection, only one port is available (see

Figure 19). In the example shown in Figure 19, the port

is COM155 Microsoft USB. The COM serial port numbers

shown are examples only. Refer to the Device Manager for

the COM serial port numbers.

Figure 19. Cable Connection COM Port

The COM serial port numbers shown are examples only.

Refer to the Device Manager for the COM serial port

numbers.

4. Toggle the connection switch to Connect (see Figure 20).

When connected, a Success to connect target! pop-up ap-

pears at the top of the VSM Client window (see Figure 21),

and the Click to connect button changes to display Connect-

ed 7000. In addition, if using a Bluetooth connection, when

connected, a blue light in the black board of the EVAL-VSMUCZ

comes on. To disconnect the device, toggle the connection

switch to Disconnect. The following pop-up messages can

appear if the connection is unsuccessful:

a. Failed to connect target: undefined. Please try to recon-

nect. If this pop-up appears (see Figure 22), select the

other COM port and reconnect.

b. Fail to get firmware version! if this pop-up appears (see

Figure 23), the firmware version may not match the soft-

ware version. Update the firmware in the kit. For details on

updating the firmware, see the EVAL-ADPD7000Z product

page.

Figure 20. Toggle Connection Switch

Figure 21. Connection Successful

Figure 22. Failed to Connect Target Error

Figure 23. Failed to Get Firmware Version Error

5. From the Type dropdown menu, select one or more among the

four functions: ECG, PPG, BIOZ, or EDA (see Figure 24). Click

Select to enter the configuration interface.

User Guide EVAL-ADPD7000

VSM CLIENT

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Figure 24. Select Function

CONFIGURE THE DEVICE

Take the following steps to configure the device:

1. Click Load cfg File in the configuration interface of the VSM

Client to load a basic configuration file (see Figure 25). To

export the current configuration file, click Export cfg File to

save the script in the configuration file folder (see Figure 27). To

change the loaded .dcfg file, click Reset before continuing.

Figure 25. Configuration Interface

2. Click Click/Drag a .dcfg file to load to open the .dcfg file in

the Load Configuration window (see Figure 26). According

to the application or measurement conditions, the user can

choose the following initial configuration from the C:\Analog

Devices\VSM Client\VSM_Client\Cfg\ADPD7000 location:

a. ADPD7000_BIOZ_ms6.dcfg: BIA magnitude and phase

measurement

b. ADPD7000_ECG.dcfg: ECG channel signal measurement

c. ADPD7000_PPG_SLOTA_ch4.dcfg: PPG signal measure-

ment using LED1A

Figure 26. Choose Configuration File

The configuration files in the configuration file folder may

differ from those shown in Figure 27.

Figure 27. Configuration File Folder

3. Click Load (see Figure 28) to load the configuration file.

Figure 28. Load Configuration

4. After loading the configuration file, the Highlevel Configura-

tion tab shows the current device data (see Figure 29). This tab

shows the most used controls, which can be configured. To rest

the data, click Reset.

Figure 29. Highlevel Configuration Tab

5. To read or write to an individual register, click to the Register

Configuration tab. To check a register, enter the address in

the Register Address field and click Read (see Figure 30). To

change a register, enter the value in the Register Value field

and click Write (see Figure 31). See the ADPD7000 data sheet

for the detailed values of the registers.

Figure 30. Reading Individual Register

User Guide EVAL-ADPD7000

VSM CLIENT

analog.com Rev. 0 | 9 of 24

Figure 31. Writing Individual Register

6. If a Fail to read register or Fail to write register pop-up

appears (see Figure 32), check whether the device is discon-

nected or broken. If it still fails, reopen the VSM Client software

and restart the EVAL-VSMUCZ board.

Figure 32. Error Message when Configuring Individual Register

RECEIVE THE DATA

Take the following steps to receive data from the first in, first out

(FIFO) after running the EVAL-ADPD7000Z:

1. After connecting the device and loading the configuration file,

click Plot View to view the Plot View interface and click the run

button (see Figure 33).

Figure 33. Plot View Interface

2. The waveform appears in the Plot View page (see Figure 34).

Figure 34. Waveform

3. To adjust the dots number on the x-axis, select a value from the

X-axis dots number dropdown menu (see Figure 35).

Figure 35. Change X-Axis Dots Number

4. To view the waveforms of different slots and channels, select

the check boxes under the PPG Show Lines: (see Figure

36). Figure 36 shows slotA-Channel1 and slotA-Channel4

selected.

Figure 36. Select Slot and Channel Waveforms

5. Click Start Export to begin exporting the data received (see

Figure 37), and click Stop Export to stop exporting the data lo-

cally (see Figure 38). The exported data is saved in an .xlsx file.

If the export is successful, a Success to export data pop-up

appears (see Figure 39) noting the location of the .xlsx file as

follows: C:\Analog Devices\VSM Client\VSM_Client\Export.

In the Export folder, the file name notes the date, time, and

corresponding function of the export (see Figure 40).

Figure 37. Start Export

User Guide EVAL-ADPD7000

VSM CLIENT

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Figure 38. Stop Export

Figure 39. Export Successful

Figure 40. Export Folder

6. Click the pause button to stop receiving data (see Figure 41).

Figure 41. Stop Receiving Data

7. Click the Stop Plot Data button to clear the plot (see Figure

42).

Figure 42. Clear Plot Data

8. On the EVAL-ADPD7000Z, place a white reflective card before

LED and PD pair to get a DC waveform (see Figure 43) that

can be used to measure the performance of the system such

as signal-to-noise ratio (SNR), noise, and ambient light rejection

(ALR).

Figure 43. DC Waveform

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