LDC1000 Evaluation Module User Guide
Contents
1. 6 Quick Start Guide LDC 1000 Evaluation Module SNAU150 September 2013 Submit Documentation Feedback Copyright O 2013 Texas Instruments Incorporated 5 Chapter 3 14 TEXAS SNAU150 September 2013 INSTRUMENTS Inductive Sensing GUI User Guide 3 1 Inductive Sensing GUI Overview The inductive sensing GUI provides graphical configuration and streaming support for the LDC1000 The GUI package includes drivers for use with the LDC1000 Evaluation Modules EVM The EVM provides a device abstraction layer for the GUI to communicate with the LDC1000 through SPI and includes other extended functionality 3 2 Host platform Requirements The Inductive Sensing GUI supports e 32 bit and 64 bit Windows 7 32 bit and 64 bit Windows XP The host machine is required for device configuration and data streaming 3 3 EVM Information For the TI LDC1000 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 3 4 Hardware Setup Below are the steps which are necessary to prepare the EVM for the GUI e The GUI must be installed on the host e The EVM driver must be installed on the host e The EVM must be connected to a full speed USB port 1 0 or above 3 5 Icon Toolbar The icon toolbar contains various icons which navigate between sections and perform various functions e AA sn2. Z 1 347 kOhms Frequency 350 537 kHz LOC Configuration Amplitude LDC Configuration Response Time 6144 cydes ad Clock Configuration Clock Power Down CLK FD Clock Configuration Clock Selection CLK_SEL External Time Base Clock TBCLK Comparator Threshold High 5200 Comparator Threshold Low 4800 INT Pin Configuration IMTE Pin Mode Comparator Power Configuration Power Mode Status Comparator Status Proximity Data falls below Threshold Low Status Data Ready DRDY Status Data Ready Status Oscillator Status Oscillator Running Status Wake up Status Wake up Idle Figure 3 2 Configuration Section Register Settings Restore Defaults Proximity Data Raw 3111 Frequency Counter Data Raw In the configuration window select the parameter to change When entering the comparator thresholds press ENTER to confirm the change Changes are applied immediately Press Read 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 9 Register Settings In the register settings section all registers of the device can be accessed To read write registers streaming must be stopped SNAU150 September 2013 Submit Documentation Feedback Copyright 2013 Texas Instruments Incorporated Inductive Sensing GUI User Guide 9 Id TEXAS INSTRU
3. www ti com energy www ti com industrial www ti com medical www ti com security www ti com space avionics defense www ti com video Mailing Address Texas Instruments Post Office Box 655303 Dallas Texas 75265 Copyright 2013 Texas Instruments Incorporated Mouser Electronics Authorized Distributor Click to View Pricing Inventory Delivery amp Lifecycle Information Texas Instruments LDC1000EVM
4. 000 4 000 samples Samples Figure 2 1 Streaming Section SNAU150 September 2013 Quick Start Guide LDC1000 Evaluation Module 3 Submit Documentation Feedback Copyright 2013 Texas Instruments Incorporated Id TEXAS INSTRUMENTS LDC1000 Evaluation Module Overview www ti com Reloading the Device If the EVM is disconnected from the host at any time simply reconnect the device and the GUI will automatically discover and re establish the streaming abilities with the device Configuring the Device Manually 1 The GUI puts the device in streaming mode by default Click on Stop in the Streaming Section to stop streaming Average 19 558 uH Inductance o oo e ai Figure 2 2 Stop Streaming 2 Click on the Configuration Section icon in the main window toolbar Figure 2 3 Configuration Section 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 LDC1000 Evaluation Module SNAU150 September 2013 Submit Documentation Feedback Copyright O 2013 Texas Instruments Incorporated Id TEXAS INSTRUMENTS www ti com LDC1000 Evaluation Module Overview Configuration Reste Default Revision ID Comparator Threshold High Proximity Data Raw 1 5200 3111 Rp MAX Comparator Threshold Low Frequency Counter Data Raw 4800 348 Rp_MIN INT Pin Configuration INTE Pin Mode 1 347 kOhms Comparator
5. Figure 3 1 Icon Toolbar SNAU150 September 2013 Inductive Sensing GUI User Guide 7 Submit Documentation Feedback Copyright O 2013 Texas Instruments Incorporated Connecting and Disconnecting Name Description Connection Information Indicates whether an EVM is connected to the PC and if so provides details of the connected device Open Opens saved register settings and defaults Save Saves all current register settings and defaults Register Settings Show Register Settings Section Configuration Show Configuration Section Streaming Show Streaming Section Icon e EVM is connected n e EVM is disconnected a k ik 14 TEXAS INSTRUMENTS www ti com 3 6 Connecting and Disconnecting Device discovery connection and disconnection is performed automatically 3 Multiple EVMs If the user desires to connect to multiple EVMs multiple instances of the GUI can be launched Multiple instances cannot connect to the same EVM only one instance of the GUI can be connected to one EVM 3 8 General Configuration In the configuration section all registers of the device can be accessed To access this section streaming must be stopped 8 Inductive Sensing GUI User Guide Copyright 2013 Texas Instruments Incorporated SNAU150 September 2013 Submit Documentation Feedback 14 TEXAS INSTRUMENTS www ti com Configuration Revision ID 21 547 kOhms S MIN
6. 4K8RACTU 10V 10 X7R 0603 C18 1 CAP CER 20PF 50V 5 Kemet C0805C200J5GACTU NPO 0805 C_Tank 1 CAP CER 100PF 50V 1 AVX Corporation 06035A101FAT2A NPO 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 Fiducial mark There is N A N A nothing to buy or mount Ji 1 Connector USB Type A Molex 48037 2200 4POS R A SMD L1 1 INDUCTOR POWER TDK Corporation VLS201610ET 100M 10UH 45A SMD R1 R2 2 RES 33 ohm 5 Vishay Dale CRCW040233ROJNED 0 063W 0402 R5 1 RES 33k ohm 5 Vishay Dale CRCW040233KOJNED 0 063W 0402 R6 R7 2 RES 1K OHM 1 10W 5 Panasonic Electronic ERJ 2GEJ102X 0402 SMD Components R20 1 RES 1M ohm 5 Yageo RC0402JR 071ML 0 063W 0402 R40 1 RES 1 5K OHM 1 16W Vishay Dale CRCW04021K50JNED 5 0402 SMD 16 Bill of Materials SNAU150 September 2013 Submit Documentation Feedback Copyright 2013 Texas Instruments Incorporated 14 TEXAS INSTRUMENTS www ti com Designator Quantity Description Manufacturer Part Number U1 1 Micropower 150 mA Low Texas Instruments LP2985AIM5 3 3 NOPB Noise Ultra Low Dropout Regulator 5 pin SOT 23 Pb Free U2 1 4 CHANNEL ESD Texas Instruments TPD4E004DRY PROTECTION ARRAY FOR HIGH SPEED DATA INTERFACES DRY006A U3 1 MCU Texas Instruments MSP430F5
7. 528IRGCR 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 SNAU150 September 2013 Bill of Materials 17 Submit Documentation Feedback Copyright 2013 Texas Instruments Incorporated IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries TI reserve the right to make corrections enhancements improvements and other changes to its semiconductor products and services per JESD46 latest issue and to discontinue any product or service per JESD48 latest issue Buyers should obtain the latest relevant information before placing orders and should verify that such information is current and complete All semiconductor products also referred to herein as components are sold subject to Tl s terms and conditions of sale supplied at the time of order acknowledgment Tl warrants performance of its components to the specifications applicable at the time of sale in accordance with the warranty in Tl s terms and conditions of sale of semiconductor products Testing and other quality control techniques are used to the extent TI deems necessary to support this warranty Except where mandated by applicable law testing of all parameters of each component is not necessarily
8. LDC1000 Evaluation Module User s Guide vis TEXAS INSTRUMENTS Literature Number SNAU150 September 2013 1 1 z Chapter 1 PRE tea SNAU150 September 2013 LDC1000 Evaluation Module Overview The LDC1000 Evaluation Module is designed to provide an example LC tank and coil structure application to interface to a host computer The module can be used independently of the GUI by the on board embedded LED which demonstrates threshold detection Bue T oneal apa qe a i 12 O0 PP ww _ Co LO Ofa Be CC tO L JY ea ey E ee ra S OR eo ITE H E o j vf pa 207 i 3 A 19 eg D tls ety ci Figure 1 1 Evaluation Module The EVM includes an example PCB sensor which is 14mm in diameter and contains 2 layers A 100pF 1 COG cap is connected in parallel to the PCB coil in order to form an LC tank The EVM is perforated at two locations One between Coil and LDC1000 which provides the option to snap the PCB coil and connect a custom coil required in the application The second perforation is between LDC1000 and MSP430 and provides the option to connect the LDC1000 Sensor into a different system or use multiple of such sensors in one system for prototyping Figure 1 2 LDC1000 Sensor When the evaluation module first powers up from the USB port it will flash a series of green and red LED lights to indicate self test When self test is finished the green LED indicates
9. MENTS Data Streaming www ti com Register Name Dir Default Value Revision ID Rp_MAX Rp MIN Sensor Frequency LDC Configuration Clock Configuration Comparator Threshold High LSB 0x08 Comparator Threshold High MSB 0 07 Comparator Threshold Low LSR 0x08 Comparator Threshold Low MSE 0x09 INT Pin Configuration Power Configuration Status Proximity Data LSB Proximity Data MSB Frequency Counter LSB Frequency Counter Mid Byte D wi EE EE k Filter Column Register Name Y Double click on a row to read write Figure 3 3 Register Settings Double click on a register in the table to read write If a register is read only the selected register is read immediately and the table value updated If the register is read write a dialog pops up and the user can choose a new register value If the value is not changed it will default to a read Set the High Threshold MSB Current Value Figure 3 4 Read Write Register Dialog Press Read 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 10 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 10 Inductive Sensing GUI User Guide SNAU150 September 2013 Submit Documentation Feedback Copyright O 2013 Texas Instruments I
10. September 2013 INSTRUMENTS Schematics 4 1 LDC1000 Schematics 3903 DOS 600 00 3095 00 Figure 4 2 Top Layer 14 Schematics SNAU150 September 2013 Submit Documentation Feedback Copyright 2013 Texas Instruments Incorporated 14 TEXAS INSTRUMENTS www ti com LDC1000 Schematics 3903 ouvoa O O O 0 Figure 4 3 Bottom Layer SNAU150 September 2013 Schematics 15 Submit Documentation Feedback Copyright O 2013 Texas Instruments Incorporated Chapter 5 MENT S SNAU150 September 2013 Designator Quantity Description Manufacturer Part Number C1 1 CAP CERM 2 2uF 10V Kemet C0603C225K8PACTU 10 X5R 0603 C2 1 CAP CER 10UF 10V 10 TDK Corporation C1608X5R1A106K080AC X5R 0603 C3 C5 C11 C12 C16 6 CAP CER 0 1UF 16V 5 Murata Electronics North GRM155R71C104JA88D C19 X7R 0402 America C4 1 CAP CERM 0 01uF TDK C1608C0G1E103J 25V 5 COG NPO 0603 C6 1 CAP CER 220PF 50V 1 TDK Corporation C1005C0G1H221F050BA NPO 0402 C7 1 CAP CERM 2200pF Kemet C0603X222K5RACTU 50V 10 X7R 0603 C8 C9 2 CAP CER 18PF 100V 5 MuRata GRM1885C2A180JA01D NPO 0603 C10 1 CAP CERM 220pF 50V AVX 06035A221FAT2A 1 COG NPO 0603 C13 C15 2 CAP CERM 1uF 10V MuRata GRM155R61A105KE15D 10 X5R 0402 C14 1 CAP CER 0 056UF 16V Kemet CO402C563J4RACTU 5 X7R 0402 C17 1 CAP CERM 0 47uF Kemet C0603C47
11. and Loading www ti com 3 10 3 Threshold Display To display Rp Thresholds right click the plot and select Toggle Markers 30 000 _ 29 000 E S z 20 000 oom to E Autoscale a ONE 15 000 Toggle Markers E IER E 10 000 Save Data Reset 2 000 Help 0 0 1 000 2 000 3 000 4 000 Samples Figure 3 7 Toggling Markets 3 11 Saving and Loading 3 11 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 csv and can be modified using a text or spreadsheet editor 3 11 2 Plot Data Right click a plot and select Save Data Data can be saved to a new file or an existing one If an existing file is chosen data will be appended 12 Inductive Sensing GUI User Guide SNAU150 September 2013 Submit Documentation Feedback Copyright O 2013 Texas Instruments Incorporated A TEXAS INSTRUMENTS www ti com Saving and Loading Inductance m a Z E 3 E m Autoscale A LZ Save Data Reset 2 Help D 2 000 4 000 6 000 8 000 10 00012 00014 000 Samples Figure 3 8 Saving Data from a plot SNAU150 September 2013 Inductive Sensing GUI User Guide 13 Submit Documentation Feedback Copyright 2013 Texas Instruments Incorporated z Chapter 4 14 TEXAS SNAU150
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14. ncorporated Id TEXAS INSTRUMENTS www ti com Data Streaming Streaming uC Sampling Rate 10000H2 Samples 4096 Stop Figure 3 5 Streaming Configuration The sampling rate can only be set when streaming is stopped 3 10 1 Average Point Min Max Values Average is the default display type To toggle between sample point min and max values right click the display Average The average of all the data points currently in the plot Point The newest data point value currently in the plot Min The minimum data point value currently in the plot Max The maximum data point value currently in the plot A larger number of samples would result in a larger averaging window 3 10 2 Zooming and Scaling Plots are interactive Zooming options are available by right clicking the plot and selecting an option from the context menu 30 000 _ 25 000 be a T 20 000 30 2 2 15 000 5 E 7 S Zoom to 10 000 Autoscale 2 000 Toggle Markers n I Save Data 0 1 000 2 000 Reset Samples T Help Figure 3 6 Plot Context Menu Zoom to Zooms to window Autoscale Autoscales the data in the plot Reset Resets the Zoom window to its default setting Help Displays shortcut keys and mouse mappings for scaling and zooming SNAU150 September 2013 Inductive Sensing GUI User Guide 11 Submit Documentation Feedback Copyright O 2013 Texas Instruments Incorporated 14 TEXAS INSTRUMENTS Saving
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16. the status of the LDC1000 INT pin When INT is asserted the green LED is lit By default INT is configured for threshold detection LDC1000 Evaluation Module SNAU150 September 2013 Submit Documentation Feedback Copyright 2013 Texas Instruments Incorporated Chapter 2 PRE eee SNAU150 September 2013 Quick Start Guide LDC1000 Evaluation Module 2 1 LDC1000 Evaluation Module Overview The LDC1000 Evaluation Module EVM enables the user to test out analog and digital capabilities of the LDC1000 Inductance to Digital Converter The EVM is a USB device used with a host computer and accessed using the Inductive Sensing Graphical User Interface GUI software which is documented in Chapter 3 To quickly get started on the LDC1000 GUI follow the steps below to load and configure a device 2 1 1 Evaluation Module Set Up Requirements 1 The LDC1000 GUI and drivers must be installed on the host 2 The USB port of the EVM must be connected to the host Loading and Running 1 Plug the EVM into the host computer The host computer should automatically detect the device as LDC1000EVM 2 Launch the GUI It should automatically detect the target read all the configuration registers and begin streaming data Streaming uC Sampling Rate 10000Hz Samples 4096 Stop Average 3406 Average 50 30 000 25 000 40 E 20 000 230 15 000 5 E 2 20 5 10 000 E CL 5 000 10 0 0 1 000 2 000 3 000 4 000 0 1 000 2 000 3
17. z Frequency Fower Configuration Power Mode 350 537 kHz LDC Configuration Amplitude Status Comparator Status Proximity Data falls below Threshold Low LDC Configuration Response Time ad Status Data Ready DRDY Status 6144 cydes Data Ready Clock Configuration Clock Power Down CLK_PD Status Oscillator Status Oscilator Running Clock Configuration Clock Selection CLK SEL Status Wake up Status External Time Base Clock TBCLK Wake up Idle Figure 2 4 Configuration Section Saving Device Configuration 1 Click on the Save icon in the toolbar aer L Figure 2 5 Save Icon 2 Type a name for the file Configuring the Device 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 SNAU150 September 2013 Quick Start Guide LDC1000 Evaluation Module 5 Submit Documentation Feedback Copyright 2013 Texas Instruments Incorporated 14 TEXAS INSTRUMENTS LDC1000 Evaluation Module Overview www ti com 4 After the configuration file is loaded current values are written once to all supported registers To 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
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