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Texas Instruments FDC1004 (Rev. C) User guides
User's Guide
SNAU163C – August 2014 – Revised October 2016
FDC1004EVM User's Guide
The FDC1004EVM evaluation kit is a plug and play system to test and evaluate the FDC1004, 4-Channel
capacitive to digital converter. The EVM is a breakable PCB which consists of 3 sections. The first section
is a USB to I2C converter based on MSP430F5528 micro-controller, the second section contains the
FDC1004 and the third section is a touchless sensor (to demonstrate the sensitivity of the FDC1004) . The
third section can be removed and replace with customized sensors to evaluate the capabilities of the
FDC1004 in various applications. The FDC1004EVM can be used with the Sensing Solutions EVM GUI.
The software is able to configure the FDC1004’s registers, graph the measured values, and export the
data in CSV format.
The EVM contains one FDC1004 (See Table 1).
Table 1. Ordering
DEVICE
IC
Package
U1
FDC1004DSC
SON 10pin
1
2
3
4
Contents
Setup .......................................................................................................................... 3
1.1
FDC1004EVM ....................................................................................................... 3
1.2
Input/Output Connector Description .............................................................................. 3
1.3
HW Setup ............................................................................................................ 5
Sensing Solutions EVM GUI ............................................................................................... 5
2.1
System Requirements .............................................................................................. 5
2.2
Installation Instructions ............................................................................................. 5
2.3
Starting the GUI ................................................................................................... 12
2.4
Navigating the GUI ................................................................................................ 13
2.5
Connecting the EVM .............................................................................................. 15
2.6
Configuring the EVM Using the Register Page................................................................ 15
2.7
Configuring the EVM Using the Configuration Page.......................................................... 22
2.8
Streaming Measurement Data ................................................................................... 23
2.9
Updating the EVM Firmware ..................................................................................... 35
Board Layout ................................................................................................................ 39
Schematic ................................................................................................................... 40
List of Figures
1
FDC1004EVM : Sections ................................................................................................... 3
2
User Account Control Prompt .............................................................................................. 6
3
Software Installer Wizard ................................................................................................... 6
4
Software Installer License Agreement .................................................................................... 7
5
Software Installation Directory ............................................................................................. 7
6
Software Installer Ready .................................................................................................... 8
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7
Software Installer In Progress .............................................................................................. 9
8
Device Driver Installer Wizard
9
Device Driver Installer In Progress....................................................................................... 10
10
Device Driver Installer Completed
.............................................................................................
9
44
.......................................................................................
Software Installer Completed .............................................................................................
Splash Screen ..............................................................................................................
Introduction Page ..........................................................................................................
Mouse Hovered Over Menu Button ......................................................................................
Menu Display After Clicking Button ......................................................................................
FDC1004 Connected to GUI ..............................................................................................
Selecting Auto-Read Interval on Register Page .......................................................................
Selecting a Register's Current Value for Editting on Register Page ................................................
Hovering Mouse Over Register Bit Value on Register Page ........................................................
Selecting a Register on Register Page ..................................................................................
Reading the Current Device Register Value on Register Page .....................................................
Save Register Values to File on Register Page ........................................................................
Loading Previously Saved Register Values from File on Register Page ...........................................
Configuration Page.........................................................................................................
Select the Data Graph on Data Streaming Page ......................................................................
Select Log File Button on Data Streaming Page.......................................................................
Selected Log File Shown on Data Streaming Page ...................................................................
Start Button on Data Streaming Page ...................................................................................
Stop Button on Data Streaming Page ...................................................................................
Show Statistics Button on Data Streaming Page ......................................................................
Hide Statistics Button on Data Streaming Page .......................................................................
Show Graph Configuration Button on Data Streaming Page .........................................................
Graph Configuration Button on Data Streaming Page ................................................................
Hide Graph Configuration Button on Data Streaming Page ..........................................................
Changing Number of Samples Displayed in Data Graph ............................................................
Displaying Previous Data Samples on the Data Streaming Page ...................................................
Select TI-TXT File Button on Firmware Upload Page ................................................................
Selecting TI-TXT Firmware File for Upload to EVM ..................................................................
Upload Firmware Button on Firmware Upload Page .................................................................
Firmware Upload in Progress ............................................................................................
Firmware Upload Success ...............................................................................................
Top Layer Routing .........................................................................................................
Bottom Layer Routing .....................................................................................................
FDC1004EVM Schematic .................................................................................................
1
Ordering ....................................................................................................................... 1
2
J1, J2 Pin Out ................................................................................................................ 3
3
J4 Pin Out
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
11
11
12
13
14
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
38
39
39
39
40
List of Tables
4
5
.................................................................................................................... 3
J5 Pin Out .................................................................................................................... 5
Bill of Materials ............................................................................................................. 41
Trademarks
All trademarks are the property of their respective owners.
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Setup
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1
Setup
This section provides a general description about FDC1004EVM, its I/O connectors and how to properly
setup the evaluation module.
1.1
FDC1004EVM
The FDC1004EVM is divided in three sections:
1. USB to I2C section: this has the purpose to interface the communication of FDC1004 to a USB port.
2. FDC1004 section: this section embeds FDC1004 capacitive to digital converter.
3. Sensor section: this section contains a capacitive sensor that can be used for both human proximity
and simple gesture recognitions..
The EVM has precut lines on the borders of each section that allow for a flexible and specific system
design. As an example of the flexibility of this design, the sensor can be replaced with a customer sensor,
or the MCU section can be separated to allow for a remote placement of the FDC1004.
USB to I2C
FDC1004
SENSOR
Figure 1. FDC1004EVM : Sections
1.2
Input/Output Connector Description
J1, J2: 4x1 Header: the I/O ports of sections between the USBtoI2C and the FDC1004 sections. This
provides the I2C communication channel and the power connections between these two sections should
the EVM be separated into sections. A simple 4 wire cable can be used to interface the sections.
Table 2. J1, J2 Pin Out
Pin
Pin
Description
J1.1
J2.1
GND
J1.2
J2.2
VDD
J1.3
J2.3
SCL
J1.4
J2.4
SDA
J3: USB interface to connect the EVM to a PC; it also provides power to the EVM.
J4: 10x1 Headers. This is not populated by default. It provides an easy method to change sensors or to
remotely place the sensor away from the FDC1004. This connector with its counterpart, J5, allows the
communication of the two modules through a 10-wire cable.
Table 3. J4 Pin Out
Pin
Description
J4.1
GND
J4.2
SHLD1
J4.3
CIN1
J4.4
CIN2
J4.5
SHLD1
J4.6
SHLD2
J4.7
CIN3
J4.8
CIN4
J4.9
SHLD2
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Table 3. J4 Pin Out (continued)
J4.10
GND
J5: 10x1 Header, for the electrical connection between the FDC1004 and the sensor section.
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Setup
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Table 4. J5 Pin Out
Pin
Description
J5.1
GND
J5.2
SHLD1
J5.3
CIN1
J5.4
Not Connected
J5.5
SHLD1
J5.6
SHLD2
J5.7
Not Connected
J5.8
CIN4
J5.9
SHLD2
J5.10
GND
1.3
HW Setup
The power supply of FDC1004 is provided by the LDO (U4), which is sourced from the USB 5.0V. The I2C
communication with FDC1004 is fully managed by the MSP430F5528IRGC microcontroller (U3). The
FDC1004 has a fixed I2C address.
2
Sensing Solutions EVM GUI
The Sensing Solutions EVM GUI provides direct device register access, user-friendly configuration, and
data streaming.
2.1
System Requirements
The host machine is required for device configuration and data streaming. The following steps are
necessary to prepare the EVM for the GUI:
• The GUI and EVM driver must be installed on a host computer
• - The EVM must be connected to a full speed USB port (USB 1.0 or above)
The Sensing Solutions EVM GUI supports the following operating systems (both 32-bit and 64-bit):
• Windows XP
• Windows 7
• Windows 8 and 8.1
• Windows 10
2.2
Installation Instructions
The Sensing Solutions GUI and EVM driver installer is packaged in a zip file. Follow these steps to install
the software:
1. Download the software ZIP file from the EVM tool page
2. Extract the downloaded ZIP file
3. Run the included executable
4. If prompted by the User Account Control about making changes to the computer, click "Yes"
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Figure 2. User Account Control Prompt
5. After the setup wizard starts, click "Next"
Figure 3. Software Installer Wizard
6. Read the license agreement, select "I accept the agreement", and click "Next"
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Figure 4. Software Installer License Agreement
7. Use the preselected installation directory and click "Next"
Figure 5. Software Installation Directory
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8. Start the installation by clicking "Next"
Figure 6. Software Installer Ready
9. Wait for the installation to complete
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Figure 7. Software Installer In Progress
10. When the "Device Driver Installation Wizard" appears, click "Next" to install the EVM driver
Figure 8. Device Driver Installer Wizard
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11. Wait for the driver installation to complete
Figure 9. Device Driver Installer In Progress
12. After the driver installation is completed, click "Finish"
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Figure 10. Device Driver Installer Completed
13. Click "Finish" to complete the installation
Figure 11. Software Installer Completed
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Sensing Solutions EVM GUI
2.3
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Starting the GUI
Follow these steps to start the GUI:
1. Select the Windows start menu
2. Select "All programs"
3. Select "Texas Instruments"
4. Select "Sensing Solutions EVM GUI"
5. Click "Sensing Solutions EVM GUI"
6. Splash screen will appear for at least two seconds
Figure 12. Splash Screen
7. After the splash screen is displayed the main window will open
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Figure 13. Introduction Page
2.4
Navigating the GUI
To navigate to different pages of the GUI follow these steps:
1. Click “Menu” in the upper left corner
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Figure 14. Mouse Hovered Over Menu Button
2. Select the desired page from the menu shown on the left
Figure 15. Menu Display After Clicking Button
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2.5
Connecting the EVM
Follow these steps to connect the EVM to the GUI:
1. Attach the EVM to the computer via USB
2. The GUI always shows the connection status on the bottom left corner of the GUI
Figure 16. FDC1004 Connected to GUI
2.6
Configuring the EVM Using the Register Page
The register page allows users to control the device directly with the register values. The user may also
use this page to read the currect register values on the device.
2.6.1
Automatically Update GUI Register Values Using Auto-Read
Autoread will periodically request the register values on the device. Click the dropdown box next to “Auto
Read” to select the update interval.
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Figure 17. Selecting Auto-Read Interval on Register Page
2.6.2
Manually Update Device Register Values
There are two methods to change register values: update the entire register value or change a single bit
within the register. The recommended update mode is always “Immediate” and not “Deferred”. To update
register values, follow these steps.
1. Double-click the current value of the register that needs to be changed. The text will turn into an
editable text box
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Figure 18. Selecting a Register's Current Value for Editting on Register Page
2. Type the new hexadecimal value into the box and click enter. The text box changes to normal text and
the GUI will send a command to the EVM to update the device register
To change individual bit values rather that entire register values follow these steps.
1. Hover the mouse over the desired bit to change
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Figure 19. Hovering Mouse Over Register Bit Value on Register Page
2. Double-click the bit to toggle its value and the register’s current value will update automatically
2.6.3
Reading Register Values without Auto-Read
To read register values follow these steps.
1. Select the register to update by clicking any column of the register row in the table
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Figure 20. Selecting a Register on Register Page
2. Click the “Read Register” button to update the selected register’s current value and bit values in the
table
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Figure 21. Reading the Current Device Register Value on Register Page
2.6.4
Saving Device Configurations
To save the current register settings of the device follow these steps.
1. Click the button immediately right to the “Auto-Read” selection dropdown
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Figure 22. Save Register Values to File on Register Page
2. Choose a name for the JSON file and the directory to save it within. Then click “Save”
2.6.5
Loading Previously Saved Configurations
To load previously saved register settings from a JSON file follow these steps.
1. Click the button furthest right from the “Auto-Read” selection dropdown
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Figure 23. Loading Previously Saved Register Values from File on Register Page
2. Select the JSON file with the desired settings and click “Open”
2.7
Configuring the EVM Using the Configuration Page
The Sensing Solutions GUI is capable on configuring the device more intuitively than the direct register
values. The "Configuration" page provides an easy-to-use tool for updating the device configuration and
provides additional information about how the device will perform.
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Figure 24. Configuration Page
The FDC1004 measures in a round robin mode and can make up to four measurements. If all four
measurements are enabled and the sample rate is 400 samples per second new data for all four
measurements would be available at a rate of 100 Hz. If a single measurement were enabled rather than
all four, again with the sampling rate set to 400 samples per second, new data for the single measurement
would be available at a rate of 400 Hz.
To make a single measurement only once, select the measurement channel and click "Take
Measurement". This will disable the "Enable continuous multi-channel measurements" setting. Continuous
measurements must be enabled for the data streaming function of the GUI and EVM.
Please reference the FDC1004 datasheet for more information regarding individual measurement settings.
2.8
Streaming Measurement Data
The Sensing Solutions GUI and EVM provide a tool to capture, display, and log measurement data. The
section describes how to use the data measurement tools from the "Data Streaming" page accessible
from the GUI menu.
2.8.1
Choosing the Graph and Visible Channels
Select the drop down menu on top of the y-axis to choose the graph to display.
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Figure 25. Select the Data Graph on Data Streaming Page
To select which channel measurements are displayed in the graph, check or uncheck the available
channels shown next to the graph units. Selecting or not selecting the channels only affects the graph and
not the data logged to a file. If a channel is not enabled in the Configuration page it will not appear on the
Data Streaming page.
2.8.2
Logging Data to a File
Follow these steps to log measurement data to a file.
1. Click the button in the upper right under next to "Click to Select Log File"
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Figure 26. Select Log File Button on Data Streaming Page
2. Select a file name and directory to save the data to and then click the “Save” button
3. Whenever data streaming is running the data for all channels will be logged to this file. The selected
file is shown next to the button.
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Figure 27. Selected Log File Shown on Data Streaming Page
2.8.3
Starting and Stopping Data Streaming
To start data streaming click the “Start” button.
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Figure 28. Start Button on Data Streaming Page
To stop data streaming click the “Stop” button.
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Figure 29. Stop Button on Data Streaming Page
2.8.4
Data Statistics
Click the “Show Statistics” button to view the measurement statistics.
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Figure 30. Show Statistics Button on Data Streaming Page
Click the “Hide Statistics” button to hide the measurement statistics.
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Figure 31. Hide Statistics Button on Data Streaming Page
2.8.5
Configuring the Graph
To configure the graph, click the "Show Graph Configuration" button.
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Figure 32. Show Graph Configuration Button on Data Streaming Page
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Figure 33. Graph Configuration Button on Data Streaming Page
The configuration window displays the actual frame rate of the graph, the rate at which data is added to
the graph, the vertical scaling, and the sample buffer size. The display rate is the rate at which the graph
updates on the computer display and is not configurable. It is automatically optimized by the GUI.
The "New Data Sample Rate" allows the user to choose when new data is added to the graph. Selecting
"EVM Output Rate" will display data on the graph as fast as is available from the EVM. This should not be
confused with the actual sampling rate of the device on the EVM which could be different. The "Add
sample to graph every ... ms" will add a new sample to the graph at the specified rate.
The "Verical Scaling" allows the user to either manually set the minimum and maximum values of the yaxis on the graph or use auto-scaling. The "Autoscale & Lock" button scales the graph based on the data
of the current display and then locks those vertical scaling settings.
The "Sample Counts" allows the user to specify the number of samples displayed on the graph and the
total number of samples stored in the buffer. Please note the buffer size does not affect data logging to a
file.
To hide the configuration window, click the "Hide Graph Configuration" button.
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Figure 34. Hide Graph Configuration Button on Data Streaming Page
2.8.6
Navigating the Data Streaming Buffer
The Sensing Solutions EVM GUI stores a buffer of data samples and then displays a subset of those
samples. The data buffer can be navigated using the horizontal slider below the graph. To show more
samples on the graph, click either the slider on the left or right side of the green bar and drag it closer or
further from the other slider. The number of samples displayed is shown between the left and right sliders
in the green bar.
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Figure 35. Changing Number of Samples Displayed in Data Graph
By clicking on the green bar and dragging the mouse left or right, previous samples in the buffer can be
displayed.
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Figure 36. Displaying Previous Data Samples on the Data Streaming Page
2.9
Updating the EVM Firmware
To upload new firmware to the EVM, navigate to the "Firmware" page from the GUI menu and follow these
steps. The images below show uploading the FDC2214 EVM firmware, but the steps are identical for any
LDC, FDC, or HDC EVM when using their respective firmware files.
1. Click the button to select a TI-TXT firmware file
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Figure 37. Select TI-TXT File Button on Firmware Upload Page
2. Select the firmware file and click “Open”
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Figure 38. Selecting TI-TXT Firmware File for Upload to EVM
3. Click the “Upload Firmware” button
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Figure 39. Upload Firmware Button on Firmware Upload Page
4. Wait for the firmware to upload. Do NOT disconnect the EVM from the PC at this time! Also note that
the GUI will disconnect from the EVM. The upload process should not take more than one minute. If
the upload fails or lasts longer than one minute, unplug the EVM and restart the GUI.
Figure 40. Firmware Upload in Progress
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Figure 41. Firmware Upload Success
3
Board Layout
Figure 42 and Figure 43 show the board layout of the FDC1004EVM.
Sensor layout has been designed to demonstrate the possible trade-off between sensor sensitivity and
protection from interferences. SHLD1 surrounds "LEFT" sensor and it has a bigger area than SHLD2 that
surrounds "RIGHT" sensor. As a consequence, the "LEFT" sensor is better shielded from interferences
but at the cost of lower sensitivity.
Figure 42. Top Layer Routing
Figure 43. Bottom Layer Routing
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Schematic
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Schematic
Figure 44. FDC1004EVM Schematic
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Table 5. Bill of Materials
Qty
Designator
Description
Footprint
Manufacturer Part
Number
1
C1
CAP, CERM, 0.1uF, 6.3V, +/-10%, X5R, 0402
402
C1005X5R0J104K050BA
1
C2
CAP CER 10UF 10V 10% X5R 0603
603
C1608X5R1A106K080AC
4
C3, C5,
C11, C19
CAP CER 0.1UF 16V 5% X7R 0402
402
0402YC132KAT2A
1
C4
CAP, CERM, 0.01uF, 25V, +/-5%, C0G/NP0, 0603
603
C1608C0G1E103J080AA
1
C6
CAP CER 220PF 50V 1% NP0 0402
402
0402YC132KAT2A
1
C7
CAP, CERM, 2200pF, 50V, +/-10%, X7R, 0603
603
C0603X222K5RACTU
2
C8, C9
CAP CER 18PF 100V 5% NP0 0603
603
GRM1885C2A300JA01D
1
C10
CAP, CERM, 220pF, 50V, +/-1%, C0G/NP0, 0603
603
06035A221FAT2A
1
C15
CAP, CERM, 2.2uF, 10V, +/-10%, X5R, 0603
603
C0603C225K8PACTU
1
C17
CAP, CERM, 0.47uF, 10V, +/-10%, X7R, 0603
603
C0603C474K8RACTU
1
C20
CAP, CERM, 1uF, 6.3V, +/-20%, X5R, 0402
402
C1005X5R0J105M050BB
2
CS1, CS2
CAP, CERM, 51pF, 50V, +/-5%, C0G/NP0, 0402
402
GRM1555C1H510JA01D
1
D1
LED SMARTLED GREEN 570NM 0603
603
LG L29K-G2J1-24-Z
1
D2
LED 660NM SUPER RED DIFF 0603SMD
603
SML-LX0603SRW-TR
1
D21
Diode, Zener, 5.6V, 500mW, SOD-123
SOD-123
MMSZ5232B-7-F
2
J1, J2
Header, TH, 100mil, 4x1, Gold plated, 230 mil above
insulator
TSW-104-07-G-S
TSW-104-07-G-S
1
J3
Connector, USB Type A, 4POS R/A, SMD
CONN_USB_04803722
00
480372200
1
J4
Receptacle, 50mil 10x1, R/A, TH
CONN_851-43-010-20001000
851-43-010-20-001000
1
L1
INDUCTOR POWER 10UH .45A SMD
VLS201610E
VLS201610ET-100M
1
R5
RES, 33k ohm, 5%, 0.063W, 0402
402
CRCW040233K0JNED
2
R6, R7
RES 1K OHM 1/10W 5% 0402 SMD
402
CRCW040233R0JNED
2
R8, R9
RES, 33 ohm, 5%, 0.063W, 0402
402
CRCW040233R0JNED
2
R10, R11
RES, 4.99k ohm, 1%, 0.063W, 0402
402
CRCW04024K99FKED
1
R20
RES,1M ohm, 5%, 0.063W, 0402
402
RC0402JR-071ML
1
R40
RES 1.5K OHM 1/16W 5% 0402 SMD
402
CRCW04021K50JNED
1
U1
4-Channel Capacitance-to-Digital Converter for
Capacitive Sensing Solutions, DSC0010B
DSC0010B
FDC1004DSC
1
U2
4-CHANNEL ESD-PROTECTION ARRAY FOR
HIGH-SPEED DATA INTERFACES, DRY006A
DRY0006A
TPD4E004DRY
1
U3
Mixed Signal MicroController, RGC0064B
RGC0064B
MSP430F5528IRGCT
1
U4
Micropower 150 mA Low-Noise Ultra Low-Dropout
Regulator, 5-pin SOT-23, Pb-Free
MF05A_N
LP2985AIM5-3.3/NOPB
1
Y1
CRYSTAL 24.000MHZ 18PF SMD
ABMM
ABMM-24.000MHZ-B2-T
SNAU163C – August 2014 – Revised October 2016
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FDC1004EVM User's Guide
41
Revision History
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NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from B Revision (August 2014) to C Revision ................................................................................................ Page
•
•
42
Changed Sensing Solutions EVM GUI section ........................................................................................ 5
Changed Updated Part Number ....................................................................................................... 41
Revision History
SNAU163C – August 2014 – Revised October 2016
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Revision History
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Changes from A Revision (August 2014) to B Revision ...................................................................................................... Page
• Added Description of the sensor ....................................................................................................... 39
SNAU163C – August 2014 – Revised October 2016
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Revision History
43
Revision History
www.ti.com
Changes from Original (August 2014) to A Revision ........................................................................................................... Page
• Changed photo of board ................................................................................................................. 1
44
Revision History
SNAU163C – August 2014 – Revised October 2016
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Copyright © 2014–2016, Texas Instruments Incorporated
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