AMS TMF882X User manual

User Guide
UG000495
TMF882X
EVM User Guide
TMF882X-EVM
v4-00 •2021-Dec-01

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Content Guide
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Content Guide
1Introduction ................................... 3
1.1 Kit Content....................................................3
1.2 Ordering Information ....................................4
2Setting Up the EVM ....................... 5
2.1 Setting Up the EVM Hardware.....................5
3Using the EVM Software............... 8
3.1 Controls for All Tabs...................................10
3.2 EVM GUI "Main" Tab..................................14
3.3 EVM GUI "3D" Tab.....................................20
3.4 EVM GUI "Interrupt" Tab............................21
3.5 EVM GUI "File Upload" Tab.......................22
3.6 Automation of Measurements.....................23
4Drivers ..........................................28
5Schematics, Layers and BOM.....29
5.1 Daughter Card............................................29
6Revision Information...................32
7Legal Information.........................33

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Introduction
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1 Introduction
The Time-of-Flight (hereafter referred to as ‘ToF’) EVM demonstration kit provides a way to evaluate
ToF optical sensor(s) from ams AG. This document is a basic user guide to the setup and operation of
the ToF EVM software.
1.1 Kit Content
Below is a checklist of what is included in the ToF EVM kit.
●ToF sensor EVM enclosure and sample glass (some EVMs come without an enclosure)
●USB type A to micro-USB cable(s)
●USB flash drive with EVM GUI software
●EVM documentation (including this guide)
Figure 1:
Kit Content

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1.2 Ordering Information
Ordering Code
Description
TMF8821-EVM
TMF8821 EVM
TMF8828-EVM
TMF8828 EVM
As TMF8821 is a superset of the functions of TMF8820, ams recommends to use the TMF8821 EVM
for evaluating the performance of TMF8820 and TMF8821.
The TMF8828 is a superset of the TMF8821, ams recommends to use the TMF8828 EVM for
evaluating the performance of TMF8820, TMF8821, and TMF8828.

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Setting Up the EVM
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2 Setting Up the EVM
This section describes the setup steps necessary to start using the EVM software.
2.1 Setting Up the EVM Hardware
The ToF sensor enclosure is already assembled and ready to plug in to a PC. The EVM with the
enclosure exposes only one micro-USB connector:
Figure 2:
EVM with Enclosure
On EVMs without enclosure (or if the enclosure has been removed) plug in the micro-USB connector
to the USB connector closer to the center of the Raspberry PI Zero W board (see Figure 3)

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Figure 3:
EVM Without Enclosure –Front Side (TMF882X facing to table)
The TMF882X is shown when placing the Raspberry PI Zero W on the backside (see Figure 4)
Figure 4:
EVM Without Enclosure –Back Side (TMF882X facing to ceiling)
2.1.1 Install the EVM USB Windows (one-time only)
When the EVM is plugged into the PC Windows should recognize the EVM as a “Removable Disk”. If
your PC does not automatically install the necessary USB driver, the mountable drive contains USB
drivers for both Windows and Mac. Install this necessary USB driver:
●ams_raspirndis_setup.exe
This step is only necessary during first-time setup, but will need to be repeated if using the EVM
software on a new PC.

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Setting Up the EVM
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2.1.2 Installing the EVM Graphical User Interface
The ToF EVM GUI software is included on the USB flash drive. Launch the Windows installer and
choose the desired installation options. The EVM graphical user interface executable is titled
TMF882X_EVM_GUI.exe.

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Using the EVM Software
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3 Using the EVM Software
This section describes the operation and capabilities of the EVM Graphical User Interface (EVM GUI).
Figure 5:
EVM GUI Overview in 3x3, 3x6, and 4x4 Pixel Mode
1Main Tab Selector (see section 3.1.2)
2Histogram Display Selector (see section
3.1.3)
6Distance Bar Chart (see section 3.2.1)
7Histograms Plot (see section 3.2.1)
8“Histograms” Box (see section 3.2.2)
3“Control” Box (see section 3.1.4)
4“Data Logging” Box (see section 3.1.5)
5Connection Status Indicators (see section
3.1.6)
9“Display” Box (see section 3.2.2)
10 “Information” Box (see section 3.2.2)
11 “Measurement” Box (see section 3.2.2)
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Figure 6:
EVM GUI Overview in 8x8 Pixel Mode
1Main Tab Selector (see section 3.1.2)
3“Control” Box (see section 3.1.4)
4“Data Logging” Box (see section 3.1.5)
5Connection Status Indicators (see section
3.1.6)
6Distance Bar Chart (see section 3.2.1)
10 “Information” Box (see section 3.2.2)
11 “Measurement” Box (see section 3.2.2)
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3.1 Controls for All Tabs
3.1.1 Menu
The global menu contains these entries:
"File" Menu
●"Save Configuration" - save all EVM GUI settings (control values)
●"Load Configuration" - loads all EVM GUI settings (control values)
●"Exit" - leave the EVM GUI
"Help" Menu
●"About Dialog" - shows version information and copyright notices
3.1.2 Main Tab Selector [1]
Select your view context here:
●The "Main" tab shows histograms (also in a histogram matrix) and data for the object in the
sensor's field of view as a bar chart (distance and confidence)
●The "3D" tab shows a 3D graphical representation the same object data(distance and
confidence)
●The "Interrupt" tab is similar to the 3D tab and allows you to set object detection parameters
(e.g. relevant object distance)
●You can update the firmware on the EVM module with the "File Upload" tab
3.1.3 Histogram Display Selector [2]
Figure 7:
Histogram Display Selector
You can display histograms either in a combined graph as shown above or separately for each of the
channels by selecting "Histogram Matrix".