AMS TMD2636 EVM Manual de usuario

User Guide

UG001002

TMD2636

TMD2636 EVM

Miniature Proximity Sensor Module

v1-00 •2021-Jan-18

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Content Guide

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Content Guide

1Introduction ................................... 3

1.1 Kit Content....................................................3

1.2 Ordering Information ....................................3

2Getting Started .............................. 4

3Hardware Description ................... 5

4Software Description .................... 6

4.1 Connect Software to Hardware....................6

4.2System Menus..............................................7

4.3 System Level Controls .................................9

4.4 Auto Polling ..................................................9

4.5 Device ID Information...................................9

4.6 Log Status and Control Information............10

4.7 “Prox” Tab...................................................11

5Resources ....................................14

6Revision Information...................15

7Legal Information.........................16

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Introduction

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1 Introduction

The TMD2636 evaluation kit comes with everything needed to evaluate the TMD2636. The device

features advanced proximity measurement in a tiny and extremely thin optical land grid array module.

1.1 Kit Content

Figure 1:

Evaluation Kit Contents

No.

Item

Description

TMD2636 Daughter Card

PCB with TMD2636 sensor installed

EVM Controller Board

Used to communicate USB to I2C

USB Cable (A to Micro-B)

Connects EVM controller to PC

Flash Drive

Include application installer and documents

1.2 Ordering Information

Ordering Code

Description

TMD2636 EVM

Miniature Proximity Sensor Module

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Getting Started

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2 Getting Started

The software should be installed prior to connecting any hardware to the computer. Follow the

instructions found in the Quick Start Guide (QSG). This loads the required driver for the USB interface

and the device’s graphical user interface (GUI).

The balance of this document identifies and describes the controls available on the GUI. In

combination with the TMD2636 datasheet, the QSG and application notes available on the ams

website, www.ams.com, there should be enough information to allow evaluation of the TMD2636

device.

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Hardware Description

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3 Hardware Description

The hardware consists of the EVM Controller, the TMD2636 EVM daughter card, and a USB interface

cable. The EVM controller board provides power and I2C communication to the daughter card through

a seven-pin connector. When the EVM controller is connected to the PC through USB, a green LED

lights on to indicate the system is getting power.

For schematics, layout and BOM information please see the documents included with the install

located in the TMD2636 EVM folder (All Programs -> ams -> TMD2636 EVM -> Documents).

Figure 2:

Evaluation Kit Hardware

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Software Description

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4 Software Description

The main window (Figure 3) contains the system menus, system level controls, device information and

logging status. The main window contains only one tab “Prox” to configure the parameters to run

proximity. The prox data and its average data is also plotted in this tab. The application polls the prox

raw data continuously.

Figure 3:

GUI Main Window

4.1 Connect Software to Hardware

On startup, the software automatically connects to the hardware. On successful initialization, the

software displays a main window, containing controls pertinent to the connected device. If the software

detects an error, an error window appears. If “Device not found or is unsupported” appears, verify the

correct daughterboard is properly connected to the EVM controller board. If “Cannot connect to EVM

board” appears, verify the USB cable is connected. When the EVM controller board is connected to

the USB, a green LED lights on power up to indicate the USB cable is connected and providing power

to the system. The LED will remain lit until the any software application opens the controller. The light

will then be switched off so that it will not interfere with any light measurements.

If the EVM board disconnects from the USB bus while the program is running, it displays an error

message and then terminates. Reconnect the EVM board and restart the program.

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4.2 System Menus

At the top of the window there are pull-down menus labeled “File”, “Log”, and “Help”. The File menu

provides basic application-level control. The Log menu controls the logging function, and the Help

menu provides version and copyright information for the application.

4.2.1 File Menu

The File menu contains the following functions:

Figure 4:

File Menu

The Reread Registers function forces the program to re-read all of the control registers from the

device and display them on the screen. This does not read the output data, because the program

reads those registers continually while it is running.

Click on the Exit command to close the main window and terminate the application. Any unsaved log

data is cleared from memory. The application can also be close by clicking the red “X” in the upper

right hand corner.

4.2.2 Log Menu

The Log menu controls the logging function and saves the log data to a file. Log data accumulates in

memory until discarded or written to a data file.

Figure 5:

Log Menu

Click Start Logging to start the logging function. Each time the program polls the output information

from the device, it creates a new log entry showing the raw data values, the values of various control

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registers, and the values entered by the user into the text fields near the bottom right corner of the

window.

Click Stop Logging to stop the logging function. Once logging stops, the user may store the data in a

file, or continue collecting additional data by clicking Start Logging again.

The Log a Single Entry command causes logging to start, collect one single entry, and immediately

stop again. This function is not available when logging is already running.

Click Clear Log to discard any previously collected data. If there is data in memory, which has not

been saved to disk, this function displays a prompt asking to verify it is OK to discard the data. If the

log is active when this function executes, the log continues running after the existing data is discarded.

Click Save Log to save the collected log data to a csv file. This stops the logging function, if it is

active, and displays a file dialog box to specify where to store the logged data. The Log Status and

Control Information section below describes the default file name, but you may change the file name if

desired.

4.2.3 Help Menu

The Help menu contains a single function: About.

Figure 6:

Help Menu

The About function displays a dialog box (Figure 7) showing the version and copyright information for

the application and library. Click the OK button to close this window and continue.

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Figure 7:

About Window

4.3 System Level Controls

Immediately below the top menu bar there are checkboxes used to control the system level functions

of the TMD2636 device.

The Power On checkbox controls the PON function of the TMD2636. When this box is checked, the

power is on and the device is running measurements according the settings in the Prox tab. When this

box is unchecked, the power is off and the device does not operate.

The Prox Enable checkbox enable the proximity measurement when checked and disable proximity

measurement when unchecked.

4.4 Auto Polling

The application automatically polls the TMD2636 raw data of the Prox. The Poll Interval at the right

upper corner of the form displays the actually time between reads of the device.

4.5 Device ID Information

The lower left corner of the window displays the ID number of the EVM Controller board, identifies the

device being used.

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4.6 Log Status and Control Information

The lower right corner of the window contains status information and controls for the logging function:

Figure 8:

Logging Status

This section contains text boxes that are stored in the log file data and used to build the file name for

the log file. If the data in these fields are changed, the new values are stored with any new data

logged. The default file name is based on these values at the time the log file is written. If nothing is

entered in these boxes they default to a period (“.”).

Sample default file name:

TMD2636_1-2-3_Log_HH_MM_SS.csv

From Application

From User Input

The Count value displayed is a count of the number of samples currently in the log buffer.

The Elapsed Time value indicates the elapsed time since data logging started.

The numeric box in the bottom right-hand corner sets a limit to the size of the collected dataset. You

may select a value from the pull-down list, or enter a value manually. When the number of entries in

the log reaches this value, the program will automatically stop logging and display a file dialog box to

specify where to store the logged data. You may change the file name if desired. The maximum value

that may be entered in this field is 32000.

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