Osram AS7056 User manual

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Sensing is life
AS7056/57 Evaluation Kit
08/02/2022
Quick Start Guide

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AS7056/57 Evaluation Kit
Quick Start Guide
AS7056/57 EVK
Install Software
How to Use
AS7056/57 PC Software
Logging Data
FW Upgrade

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Contents of the AS705x Evaluation kit
AS705x Evaluation kit parts
Out of the Box
•1–AS705x EVK Mainboard
•2–Generic Bluetooth Board
•3–AS7056 Sensor board
•4–AS7057 Sensor board
•5–Optical Barrier & Cover Glass
•6–Optical Barrier & Cover Glass
•7–Micro USB cable included in the box
Fig. 1: AS705x Evaluation Kit out of the box
1
2
34
5 6
SFH2201
SFH7016
Optical Stack
SFH2704
SFH2201
AS7057 AFE
SFH2201
SFH2704
Optical Stack
SFH7015
SFH2201
AS7056 AFE
V00161
Fig. 2: AS7056 & AS7057 Sensor Boards

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Contents of the AS7056 Evaluation kit
Evaluation kits main parts
5432
1
6
78
9
Key
•1–AS7056 AFE
•2–Optical Module
•3–VCSEL laser diode
•4–AS7056 Sensor board with Optical
Module
•5–AS705x EVK Mainboard
•6–BLE Controller Board
•7–EVK power supply On/Off button
•8 –Power Supply Test Interface
•9–Power supply & I2C Connection /
Test Interface
Fig. 3: AS7056 Evaluation Kit top view

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AS7056/57 PC Software
Installation
To install, start the installer executable and follow the instructions as shown in Fig. 4 below (left to right).
Fig. 4: AS7056/57 Software Installation steps
•Note: The EVK software is available for download (please contact the ams OSRAM support team ([e-mail]) for the download link)

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Setup
Getting Started
1. Connect the micro USB to USB cable to the board and plug it
into your computer.
2. Afterwards, press the S1 button for 1 sec to turn on the sensor
board.
3. The green LED on the Bluetooth Microcontroller module and
USB connector board will light up as soon as the board is
powered.
4. The green LED (H1) on the mainboard will light up as soon as
the board is powered.
5. Start the EVK GUI software.
Fig. 5: AS7056 Evaluation Kit power ON
AS705x EVK Mainboard On/Off Button (S1)
ON: Press the button for 1 Sec
OFF: Press the button for 2 sec

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AS7056/57 PC Software
Overview of GUI
Fig. 6: Overview of SW GUI
The GUI consists of three main
segments highlighted with the three
rectangles.
•The one on the top has the
register map list option, load
and save configuration file, save
the log file with the timestamp,
enable moving average filter (if
needed) and update the
firmware.
•The one is the middle has
control functions with three tabs
-> Configuration, Overview,
Application and Measurement
•The status bar at the bottom is
connection information,
configuration file information,
measurement condition and
logging status.

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AS7056/57 PC Software
Overview of GUI –Configuration Tab
1. After launching the EVK GUI, the
“Configuration” tab is displayed.
2. A few configuration presets are
provided for the user to quickly
start using the device. These can
be chosen from the 'Configuration
Presets' Tab. Each file comes with
a description which lets the user
know which measurements could
be done using these.
3. Block diagram of the AS7056/57.
Blue color shows which sub-blocks
are is enabled and grey color
shows which sub-blocks are
disabled in a particular
configuration file. Each sub-block
can be accessed by clicking on it.
4. The estimated current consumption
of the AS7056/57 and LEDs during
measurement are displayed.
Standby mode is activated to put
the analog blocks to sleep after the
end of the measurement.
Fig. 7: Overview of SW GUI –Configuration Tab
4
1
2
3

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AS7056/57 PC Software
Overview of GUI –Overview Tab
1. Aquick overview of the
device parameters and
provides general information
about the setting
configurations, which can be
found in the "Overview" tab.
2. Which parameter value is set
for a specific measurement
configuration can be seen in
each parameter block. For
example –LED current, LED
combination, modulator,
sequencer parameters, SINC
filter, etc.
Fig. 8: Overview of SW GUI –Overview Tab
1
2

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AS7056/57 PC Software
Overview of GUI –Application Tab 1. Software and vital signs application
related parameters can be found under
the 'Application' tab. Click the
“Application” tab to operate the “PD
Offset & LED Current Control”,
“Application” and “Software Post-
Processing Filter” sections.
2. In the Controller settings, there is AGC
Configuration that controls the PD-offset
and LED current and algorithms like
HRM and SpO2. The parameters
related to HRM & SpO2 applications
can be individually reviewed and
adjusted on this tab by enabling or
disabling the Accelerometer along with
the different frequency.
3. Various applications such as Raw Data,
HRM or SpO2 can be activated.
4. Different SW post-processing filters
have been implemented to improve the
quality of the output signal. The plot
area displays the post-processing filter.
5. Advanced Automatic Offset Control
(AAOC)
Fig. 9: Overview of SW GUI –Application Tab
1
2
3
4
5

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AS7056/57 PC Software
Overview of GUI –Measurement Tab
1. The measurement can be started
after setting the parameter for a
specific application. Click on the
“Start Measurement” tab to run the
sensor module and observe the
“Chip Events”, “Application Output”,
“AGC Status”.
2. “Start Measurement” button
3. Proximity, VCSEL, MOD1&2,
Sequence runtime conditions can be
observed
4. Heart Rate & SpO2 values will be
displayed
5. AGC status for LED current and PD
offset can be observed
6. Set the signal calculation or enter
own formula
7. The PPG ADC count can also be
displayed on the graph
Fig. 10: Overview of SW GUI –Measurement Tab
2
3
4
5
6
1
7

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AS7056/57 EVK
Finger Positioning on the Optical Stack
Fig. 11: Finger positioning for PPG on AS7056
Place the EvalKit on the table/flat surface.
Rest forearms and hands on the table and let the finger tips rest.
Keep a light touch on the optical adapter –no need to squeeze or press down too firmly.
Abrupt movement/vibration during measurement should be avoided.
Measurement Conditions
Put Finger on the respective
positions
Right/Left - index/middle finger
Fix The Optical Stack

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AS7056/57 PC Software
Starting a PPG/finger measurement for HRM 1. Firstly, press the sensor button ”S1”for 1 second
to power-on the sensor.
2. Select the right COM port number or BLE number
from the drop-down menu.
3. Click the Connect button
4. When it is successfully connected, the right side
button of the status bar (AS7057) will change color
to blue.
5. The green LED on the Bluetooth module will start
to blink as soon as the board connects with the
GUI.
6. After connecting, Select the right configuration file
from the provided configuration presets (AS7057:
HRM 200 Hz on finger using PPG signal) in the
configuration tab.
7. In the Application tab, HRM algorithm has been
activated
8. Click the measurement tab, Click the Start
Measurement button.
9. Place a finger on the LED/PD module, and
subsequently, you will see the PPG raw data plot
in the Graph window and the heart rate in the
application output window.
Fig. 12: Selection of PPG with proximity configuration file

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AS7056/57 PC Software
Starting a PPG/finger measurement for SpO2 1. Firstly, press the sensor button ”S1”for 1 second
to power-on the sensor.
2. Select the right COM port number or BLE number
from the drop-down menu.
3. Click the Connect button
4. When it is successfully connected, the right side
button of the status bar (AS7057) will change color
to blue.
5. The green LED on the Bluetooth module will start
to blink as soon as the board connects with the
GUI.
6. After connecting, Select the right configuration file
from the provided configuration presets (AS7057:
SpO2 200 Hz on finger using PPG signal) in the
configuration tab.
7. In the Application tab, SpO2 algorithm has been
activated
8. Click the measurement tab, Click the Start
Measurement button.
9. Place a finger on the LED/PD module, and
subsequently, you will see the PPG raw data plot
in the Graph window and the heart rate & SpO2 in
the application output window.
Fig. 13: Selection of PPG with proximity configuration file

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AS7056/57 PC Software
Starting a PPG/finger measurement with Proximity 1. Firstly, press the sensor button ”S1”for 1 second
to power-on the sensor.
2. Select the right COM port number or BLE number
from the drop-down menu.
3. Click the Connect button
4. When it is successfully connected, the right side
button of the status bar (AS7056) will change color
to blue.
5. The green LED on the Bluetooth module will start
to blink as soon as the board connects with the
GUI.
6. After connecting, Select the right configuration file
from the provided configuration presets (AS7056:
PPG 100 Hz & Proximity 10 Hz for PPG signal
using sequencer 1 with the sequencer 1 and
proximity is using sequencer 2 in this case) in the
configuration tab.
7. In the Application tab, raw data output has been
activated
8. Click the measurement tab, Click the Start
Measurement button.
9. Place a finger on the LED/PD module, and
subsequently, you will see the PPG raw data plot
in the Graph window and proximity condition in
the Chip Events.
Fig. 14: Selection of PPG with proximity configuration file

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AS7056/57 PC Software
Starting a 2xPPG/finger measurement with Ambient Light
1. Firstly, press the sensor button ”S1”for 1 second
to power-on the sensor.
2. Select the right COM port number or BLE number
from the drop-down menu.
3. Click the Connect button
4. When it is successfully connected, the right side
button of the status bar (AS7056) will change color
to blue.
5. The green LED on the Bluetooth module will start
to blink as soon as the board connects with the
GUI.
6. After connecting, Select the right configuration file
from the provided configuration presets
(AS7056/57:PPG 100Hz with MOD1 SUB1-3 for
3-channel PPG configuration using the Red, IR
LEDs and ambient light in this case) in the
configuration tab.
7. In the Application tab, raw data output has been
activated
8. Click the measurement tab, Click the Start
Measurement button.
9. Place a finger on the LED/PD module, and
subsequently, you will see the 2xPPG and
ambient light raw data plot in the Graph window.
Fig. 15: Selection of 2xPPG with Ambient light configuration file

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AS7056/57 Advanced Automatic Offset Control (AAOC)
How to do the AAOC calibration
It is important to perform the AAOC calibration at
the beginning of the measurement in order to use
the AAOC function.
1. After connecting, Select the right configuration
file from the provided configuration presets
(AS7057: PPG Green AAOC to use the AAOC
feature) in the configuration tab.
2. Switch to the “Application”Tab and press the
“Advanced AOC”to access the calibration
process.
Fig. 16: AAOC Calibration

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AS7056/57 AAOC
How to do the AAOC calibration
•The present configuration uses Modulator1, an 8uA modulator
ADC FSR and a 32μA DAC FSR. These used parameters
must also be used for the calibration process. If there is a
change in the parameters, these changes must be used here.
The calibration is always performed only for one combination
of different availableADC and DAC FSRs.
•The number of subsamples used for calibration should be
higher than 10, and in this example 50 samples are used for
each calibration step.
•The sampling frequency is set to 1000 Hz to keep the
calibration process time as short as possible.
•Please note that the integration time also influence the quality
of the calibration process, which is the same as with normal
measurements. An integration time below 64 μs is not
recommended for calibration. The integration time used in the
example is set to 128 μs.
Fig. 17: AAOC Calibration

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AS7056/57 AAOC
How to do the AAOC calibration
• After pressing the “Start Calibration”button, the calibration
process starts and the progress is displayed in the status bar.
Depending on the settings used, the calibration can only take
a few seconds. The result of the calibration is a table of 15
values that are used to reconstruct the AAOC sample value in
the software.
Fig. 18: AAOC Calibration

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AS7056/57 AAOC
How to do the AAOC calibration
•Right-clicking in the calibration table opens the copy dialog
and the calibration table for DAC can be copied into the
Modulator 1 Sequence 1 text field.
• To enable AAOC signal reconstruction, the “Advanced
AOC” checkbox must be checked.
•In addition, the table could be saved and loaded.
Fig. 19: AAOC Calibration