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R

EV 

3.1

TCS3771

 

EVM 

U

SER

G

UIDE

 

T

EXAS 

A

DVANCED 

O

PTOELECTRONIC 

S

OLUTIONS 

(TAOS)

 PROVIDES CUSTOMER SUPPORT IN VARIED TECHNICAL AREAS

.

  

S

INCE 

TAOS

 DOES NOT 

TCS3771

 

L

IGHT

-

TO

-D

IGITAL 

A

MBIENT 

L

IGHT 

/

 

P

ROXIMITY 

S

ENSOR 

E

VALUATION 

S

YSTEM

 

Aug 2011 

 

 

 

E

STABLISHING 

B

ASIC 

F

UNCTIONALITY

 .................................... 3

 

TCS3771

 

EVM

 

G

RAPHICAL 

U

SER 

I

NTERFACE 

(GUI) ............. 4

 

SOFTWARE

 

OVERVIEW .................................................. 4

 

INPUT

 

SIDE,

 

“FUNCTIONAL”

 

TAB ............................ 6

 

INPUT

 

SIDE,

 

“REGISTER”

 

TAB .................................. 8

 

OUTPUT

 

SIDE,

 

“R

EGISTER

 

TAB ................................ 12

 

OUTPUT

 

SIDE,

 

“F

UNCTIONAL

 

TAB ........................... 13

 

OUTPUT

 

SIDE,

 

“P

ROX

H

ISTO

 

TAB .............................  13

 

OUTPUT

 

SIDE,

 

“P

LOT

 

TAB ........................................  14

 

R

ESOURCES

 .............................................................................. 14

 

 

POSSESS FULL ACCESS TO DATA CONCERNING ALL OF THE USES AND APPLICATIONS OF CUSTOMERS

 PRODUCTS

,

 

TAOS

 ASSUMES NO RESPONSIBILITY 

FOR CUSTOMER PRODUCT DESIGN OR THE USE OR APPLICATION OF CUSTOMERS

 PRODUCTS OR FOR ANY INFRINGEMENTS OF PATENTS OR RIGHTS OF 

OTHERS WHICH MAY RESULT FROM 

TAOS’

 ASSISTANCE

WWW

.

TAOSINC

.

COM

 

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Содержание TCS3771

Страница 1: ...FTWARE OVERVIEW 4 INPUT SIDE FUNCTIONAL TAB 6 INPUT SIDE REGISTER TAB 8 OUTPUT SIDE REGISTER TAB 12 OUTPUT SIDE FUNCTIONAL TAB 13 OUTPUT SIDE PROXHISTO TAB 13 OUTPUT SIDE PLOT TAB 14 RESOURCES 14 POSSESS FULL ACCESS TO DATA CONCERNING ALL OF THE USES AND APPLICATIONS OF CUSTOMERS PRODUCTS TAOS ASSUMES NO RESPONSIBILITY FOR CUSTOMER PRODUCT DESIGN OR THE USE OR APPLICATION OF CUSTOMERS PRODUCTS OR ...

Страница 2: ...B interface and the controller board processor is running If the green LED does not light up check the USB cable connections unplug the USB cable and try again If after re try no green LED check the PC for USB error messages See resources section at end of this document for additional assistance TEXAS ADVANCED OPTOELECTRONIC SOLUTIONS TAOS PROVIDES CUSTOMER SUPPORT IN VARIED TECHNICAL AREAS SINCE ...

Страница 3: ... bottom window is the main user interface child window and should be positioned on the screen for easy access The top window parent window is not typically needed and may be placed out of the way This window is the parent window PW to the child window CW and may be used to reset the CW Clicking on the red X on the PW will close both PW and CW Clicking on the red X on the CW will close only the CW ...

Страница 4: ...the motherboard indicates that the USB cable is connected and providing power to the system The Reset button can be pressed or the software can be restarted to reinitialize the The Reset button can be pressed or the software can be restarted to reinitialize the syst system for of specific device nctions easy For the TCS3771 devices the initial display screen is shown em for of specific device ncti...

Страница 5: ...ing field names will change in the output beginning at the time of the change but the log file name will not change after logging is started 5 Clear The Clear button will flush the previous optical sample readings and reset the elapsed time indicator see 7 6 Log Creates a text log file with data The name will be assigned as explained in 3 This will cause the system to write out any data currently ...

Страница 6: ...e ADC output registers overflow Digital saturation is reached at 65 536 thus the full scale output of the TCS3771 is 65 535 16 bits If the integration time is set less than 172ms however the dynamic range of the device will be limited to the following Integration Time 172ms Saturation 65 535 Integration Time 172ms Saturation Integration Time 2 7 x 1024 1 WAIT TIME When the software initializes a d...

Страница 7: ... settings for the sink current and or number of pulses can also be made using the device registers as documented later in this manual The photodiodes receiving the reflected optical energy are chosen in the second line The list box shows options for Neither Clear Red or Both The Prox Release Threshold and Prox Detect Threshold sliders allow a threshold with hysteresis to be selected to determine w...

Страница 8: ... Writing a one 1 activates the wait timer 5 AIEN ALS Interrupt Enable Writing a one 1 enables the ALS interrupt 6 PIEN Proximity Interrupt Enable Writing a one 1 enables the Proximity interrupt WTIME 0x03 Wait time in 2 4ms increments unless the WLONG bit is set in which case the wait time is multiplied by 12 The number to the right is the computed WTIME See the ATIME note in the ALS Sub Tab descr...

Страница 9: ...times the value shown in the list box will be one of the preselected values but it has not been selected If this happens the number will not be the same as the computed number for WTIME on the Control Sub Tab The computed value is the one that is correct This can be fixed by selecting a preselected value from the list box or by cycling the register value UP DOWN or DOWN UP This will set the list b...

Страница 10: ...shold AILT AIHT is exceeded before the interrupt is generated to be controlled Setting a zero means an interrupt is generated on every ALS reading The 25 button takes the current ambient light reading and automatically computes new values for the AILT and AIHT registers each with a 25 wider latitude Proximity Sub Tab The Proximity tab shows editable registers associated with proximity sensing cont...

Страница 11: ... s Also on this screen is a control that will automatically generate the register values to provide threshold settings 25 higher and lower than the Proximity Data Register value Proximity Interrupt Low Threshold 0x04 0x05 Low threshold for proximity interrupt 1 PILTL 0x08 The lower 8 bits of the 16 bit low threshold value 2 PILTH 0x09 The upper 8 bits of the 16 bit low threshold value Proximity In...

Страница 12: ...C bits of the Clear photodiode RDATA 0x16 0x17 1 IRDATA 0x16 The lower 8 ADC bits of the Red photodiode 2 IRDATAH 0x17 The upper 8 ADC bits of the Red photodiode GDATA 0x18 0x19 1 IRDATA 0x18 The lower 8 ADC bits of the Green photodiode 2 IRDATAH 0x19 The upper 8 ADC bits of the Green photodiode BDATA 0x1A 0x1B 1 IRDATA 0x1A The lower 8 ADC bits of the Blue photodiode 2 IRDATAH 0x1B The upper 8 AD...

Страница 13: ...put Stdev standard deviation of the displayed data Max Min difference between the maximum reading and the minimum reading Horizontal axis numbers show the minimum value and the maximum value along with the mean The red vertical line shows the proximity detection threshold and the green line shows the release threshold as set by the sliders on the functional input tab of the GUI TEXAS ADVANCED OPTO...

Страница 14: ... Start Guide QSG included with EVM media Application Notes available from website For additional information regarding the TCS3771 please refer to the datasheet For information regarding the installation of the TCS3771 EVM host application please refer to the Quick Start Guide Application notes dealing with various aspects of optical measurement and optical measurement applications are available A...

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