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Texas Instruments LDC1000 User Manual Download Page 15

Additional Resources

Figure 3-12. Custom Sensor Connection

By default, the Evaluation Module is fitted with a 100pF 1% NP0 sensor capacitor in parallel to the PCB
coil. When the sensor capacitor value is changed as a result of replacing the default LC tank with a
custom inductive sensor, it is necessary to input the new capacitor value into the Sensor Capacitor field in
the GUI to ensure that the inductance data is calculated correctly.

Figure 3-13. Sensor Capacitor Setting

3.11 Additional Resources

Several resources are included in the GUI installation directory (typically C:\Program Files (x86)\Texas
Instruments LDC1000 EVM). These resources can be useful for development of LDC10xx projects.

3.11.1 PCB Information

In the installation directory, refer to the PCB subdirectory. In the PCB/Fabrication Drawing subdirectory the
schematic, Bill of Materials, and a printout of the layout is included. The Gerbers and manufacturing files
are included the PCB/Gerber subdirectory.

3.11.2 Firmware Resources

In the installation directory, refer to Firmware subdirectory. The firmware image is provided, along with the
source code and Code Composer project workspace for the LDC10xx EVM firmware.

3.11.3 Matlab Interface

A Matlab interface library is included in the installation. Refer to installation directory and then navigate to
Matlab\Doc\html\index.html for documentation on the provided functions.

15

SNAU150A – September 2013 – Revised March 2014

Inductive Sensing GUI User Guide

Submit Documentation Feedback

Copyright © 2013–2014, Texas Instruments Incorporated

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Summary of Contents for LDC1000

Page 1: ...LDC1000 LDC1041 LDC1051 Evaluation Module User s Guide Literature Number SNAU150A September 2013 Revised March 2014 ...

Page 2: ...urations The first perforation between the coil and the LDC10xx can be used to snap off the PCB coil and connect a custom coil The second perforation is between the LDC10xx and the MSP430 and provides the option to connect the LDC10xx and the sensor to a different system or to use multiple sensors in one system for prototyping Figure 1 2 LDC1000 Sensor When the evaluation module first powers up fr...

Page 3: ...LDC10xx GUI follow the steps below to load and configure a device 2 1 1 Evaluation Module Set Up Requirements 1 The LDC10xx GUI and drivers must be installed on the host 2 Available USB port on host computer Loading and Running 1 Plug the EVM into the host computer The host computer should automatically detect the device as a LDC10xxEVM 2 Launch the GUI It should automatically detect the presence ...

Page 4: ...mode by default Click on Stop in the streaming section to stop continuous LDC10xx conversion Figure 2 2 Stop Streaming 2 Click on the Configuration icon in the main window toolbar Figure 2 3 Configuration Icon 3 Select the parameter to change When entering the comparator thresholds press ENTER to confirm the change Changes are applied immediately 4 Quick Start Guide LDC10xx Evaluation Module SNAU1...

Page 5: ...evice with Configuration File Defaults 1 The GUI puts the device in streaming mode by default Click on Stop in the streaming section to stop streaming 2 Click on the Open icon in the toolbar Figure 2 6 Open Icon 3 Select the configuration file 5 SNAU150A September 2013 Revised March 2014 Quick Start Guide LDC10xx Evaluation Module Submit Documentation Feedback Copyright 2013 2014 Texas Instruments...

Page 6: ...o restore defaults defined in the configuration file click on Restore Defaults to write all current registers with the new configuration file defaults Figure 2 7 Restore Defaults 6 Quick Start Guide LDC10xx Evaluation Module SNAU150A September 2013 Revised March 2014 Submit Documentation Feedback Copyright 2013 2014 Texas Instruments Incorporated ...

Page 7: ...o prepare the EVM for the GUI The GUI must be installed on the host The EVM driver must be installed on the host The EVM must be connected to a full speed USB port USB 1 0 or above 3 3 EVM Information For the TI LDC10xx EVM The EVM allows the GUI to Configuring register data through SPI CSB SCLK SDO SDI Stream register data through SPI Stream register data through SPI Detect interrupts through SPI...

Page 8: ...the COM port number at the top of the GUI This EVM is the highest priority Remove and replace each EVM individually until the COM port number changes Note the new COM port number 3 This EVM is the next highest priority Repeat this process until no EVMs are connected and the EVM with the lowest priority has been identified 4 When all of the EVMs are to be used simultaneously open one GUI for each E...

Page 9: ...tore from Defaults to write values from the default column if they exist to the current register values Press Save Values as Defaults to set the current configuration settings as the default settings 3 7 Register Settings In the register settings section all registers of the device can be accessed To read write registers streaming must be stopped 9 SNAU150A September 2013 Revised March 2014 Induct...

Page 10: ...ad All to refresh all configuration status and data Press Restore Defaults to write values from the default column if they exist to the current register value 3 8 Data Streaming Data is streamed from the EVM to the GUI when streaming is started The sampling rate of the EVM and the number of samples to plot can be configured The sampling rate is the rate at which the micro controller on the EVM ret...

Page 11: ...ly in the plot Max Mode The maximum data point value currently in the plot A larger number of samples would result in a larger averaging window 3 8 2 Zooming and Scaling Plots are interactive Zooming options are available by right clicking the plot and selecting an option from the context menu Figure 3 6 Plot Context Menu Zoom to Zooms to window Autoscale Autoscales the data in the plot Reset Rese...

Page 12: ...a To display the raw frequency count output data instead of the inductance data right click on the Inductance plot and select Toggle Data Type Figure 3 8 Switching Display Units Between Inductance and Frequency Count 12 Inductive Sensing GUI User Guide SNAU150A September 2013 Revised March 2014 Submit Documentation Feedback Copyright 2013 2014 Texas Instruments Incorporated ...

Page 13: ... Configuration 3 8 6 LED The Red and Green LEDs on the LDC10xxEVM can be turned on or off using this menu 3 9 Saving and Loading 3 9 1 Configurations Configurations can be saved and loaded To save a configuration click on the Save icon To load a configuration click on the Open icon Configurations include all register names current values and default values They are saved in Comma Separated Files c...

Page 14: ...ng to Continuous Once the mode is set press the Log Data button to save the file A file save dialogue will open asking for the file name It is recommended to add txt to the end of the filename if a text editor is to be used to analyze the data or use an extension of csv if a spreadsheet program is to be used When the Logging save mode is continuous the GUI will continuously save the data from the ...

Page 15: ...ent of LDC10xx projects 3 11 1 PCB Information In the installation directory refer to the PCB subdirectory In the PCB Fabrication Drawing subdirectory the schematic Bill of Materials and a printout of the layout is included The Gerbers and manufacturing files are included the PCB Gerber subdirectory 3 11 2 Firmware Resources In the installation directory refer to Firmware subdirectory The firmware...

Page 16: ...ed in the installation The Labview subdirectory contains VIs to read and write LDC10xx registers and to stream data from the LDC10xxEVM 16 Inductive Sensing GUI User Guide SNAU150A September 2013 Revised March 2014 Submit Documentation Feedback Copyright 2013 2014 Texas Instruments Incorporated ...

Page 17: ... 2014 Schematics 4 1 LDC10xx EVM Schematics Figure 4 1 EVM Layout Figure 4 2 Top Layer Figure 4 3 Bottom Layer 17 SNAU150A September 2013 Revised March 2014 Schematics Submit Documentation Feedback Copyright 2013 2014 Texas Instruments Incorporated ...

Page 18: ...4K8RACTU 10V 10 X7R 0603 C18 1 CAP CER 20PF 50V 5 Kemet C0805C200J5GACTU NP0 0805 C_Tank 1 CAP CER 100PF 50V 1 AVX Corporation 06035A101FAT2A NP0 0603 D1 1 LED SMARTLED GREEN OSRAM Opto LG L29K G2J1 24 Z 570NM 0603 Semiconductors Inc D2 1 LED 660NM SUPER RED Lumex Opto Components SML LX0603SRW TR DIFF 0603SMD Inc D21 1 Diode Zener 5 6V Diodes Inc MMSZ5232B 7 F 500mW SOD 123 FID1 FID2 FID3 3 Fiduci...

Page 19: ...ES DRY006A U3 1 MCU Texas Instruments MSP430F5528IRGCR U4 1 Inductance to Digital Texas instruments LDC1000 Converter Y1 1 CRYSTAL 24 000MHZ Abracon Corporation ABMM 24 000MHZ B2 T 18PF SMD J2 0 TERM BLOCK 2POS FCI 20020327 D021B01LF 3 81MM PCB HORIZ J4 0 Header TH 100mil 2x1 Samtec Inc TSW 102 07 G S Gold plated 230 mil above insulator 19 SNAU150A September 2013 Revised March 2014 Bill of Materia...

Page 20: ...on new data logging feature 3 Added New Section 14 Changed Changed Schematic to Vector graphic for better display 17 NOTE Page numbers for previous revisions may differ from page numbers in the current version NOTE Page numbers for previous revisions may differ from page numbers in the current version 20 Revision History SNAU150A September 2013 Revised March 2014 Submit Documentation Feedback Copy...

Page 21: ...esponsible for compliance with all legal regulatory and safety related requirements concerning its products and any use of TI components in its applications notwithstanding any applications related information or support that may be provided by TI Buyer represents and agrees that it has all the necessary expertise to create and implement safeguards which anticipate dangerous consequences of failur...

Page 22: ...Mouser Electronics Authorized Distributor Click to View Pricing Inventory Delivery Lifecycle Information Texas Instruments LDC1000EVM LDC1051EVM ...

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