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Texas Instruments LED171596AEVM Скачать руководство пользователя страница 14

EVM Software

www.ti.com

14

SNVU546C – October 2017 – Revised May 2018

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Copyright © 2017–2018, Texas Instruments Incorporated

Using the LED171596AEVM Evaluation Module

3.12.1

Establishing I2C/SPI Communication

I2C or SPI is can be selected. IFSEL pin need to be set to high when I2C is selected because
IFSEL_LATCH is used for selecting between I2C-compatible and SPI after rising edge of EN pin.

Figure 21. I2C/SPI Selection

3.12.2

EN and IFSEL/Latch Pin Control

EN and IFSEL_LATCH pins can be controlled by using the Enable Pin button and the IFSeL Pin button
respectively, but the Enable Pin button is not valid if a Tiva Launchpad is not connected to PC. The button
color is turned red when the pin value is set to high and gray is low. IFSEL pin selects I2C-compatible or
SPI interfaces at rising edge of EN pin (see

Figure 22

). After detecting interface “IFSEL Pin” is turned to a

latch pin to support latch input for brightness and current register buffers when in normal mode. As a
default, “Latch pin” button is disabled because the evaluation software supports automatic latch pin control
every time when a value written to SRAM. “Latch pin” button is enable when automatic latch is disabled
(see

Section 3.12.8

).

Figure 22. Enable Pin, IFSET/Latch Pin

3.12.3

LED Brightness and Current Control

Individual LED’s current and brightness can be controlled through the LED buttons, LED brightness
trackbar/text, and LED current trackbar/text. There are buttons and texts, which are ordered in the same
order as the LEDs on the LED171596AEVM. Simply, a LED can be turned on or turned off is available
when a button is clicked. Brightness 0 is written into the LEDxx_BRI(0x160 + LED number) reigster when
the LED is turned off, LED brightness/current values configured by trackbars are written to
LEDxx_BRI(0x160 + LED number) register and LEDxx_CUR(0x100+LED number) register at once.
Therefore, LED must be turned off and then turn on to change the brightness or the current settings.

Содержание LED171596AEVM

Страница 1: ...n the GUI software Contents 1 Introduction 3 2 Setup 3 2 1 Input Output Connector Description 3 2 2 Operation 4 3 EVM Software 4 3 1 Minimum Procedure for Turning on the LEDs 5 3 2 EVM and Tiva LaunchPad Setup 5 3 3 Tiva ICDI Driver installation in Windows 7 7 3 4 Tiva ICDI Driver installation in Windows 10 7 3 5 Programming the Firmware 8 3 6 EVM Software Installation 8 3 7 EVM Software Launch 10...

Страница 2: ...32 Sloper Selection 19 33 Sloper Set Button 19 34 Sloper LEDs 19 35 SW Latch and Auto Latch Selection 20 36 Register Direct Access 20 37 ISET 20 38 Enable Bit Control 20 39 LED Driver Register Information 21 40 LED Driver Register Configuration 21 41 PWM Register Information 21 42 External PWM 22 43 CONFIG_PWM Register Configuration 22 44 Master Sloper Setting 22 45 Status Register 23 46 Interrupt...

Страница 3: ...tween J3 1 and J3 2 for normal operation VLED_SEL J4 J5 J6 creates a star jumper and is provided to select the VLED supply The jumper should be installed between J4 1 and J4 2 for normal operation VLED supplied by TPS62140 VEXT J7 is provided to connect an external supply to The LED171596AEVM Use J7 3 VIN and J7 2 GND to supply power to the TPS62140 Use J7 1 VL and J7 2 GND when using external sup...

Страница 4: ...ns J9 2 and J9 3 SEL Shunt installed between pins J1 1 and J1 2 Tiva Launchpad ISET Shunt installed between pins J2 2 and J2 3 Rheostat variable ISET control BEN Shunt installed between pins J8 1 and J8 2 TPS62140 enabled Refer to Figure 2 for all jumper positions Set up jumper pins as shown in Figure 2 Figure 2 Set Jumper Pins 3 EVM Software EVM software is available for download from the TI webs...

Страница 5: ...r to Figure 2 4 Connect micro USB cable to the debug port of LaunchPad board and connect PC refer to Figure 4 5 Install Tiva ICDI driver 6 Verify the Tiva Stellaris Virtual Serial Port and Stellaris In Circuit Debug Interface on Windows Device Manager 7 Connect optional external power and ground to the board 8 Turn on the external supplies if used 9 Install and run EVM software 10 Make sure the Ha...

Страница 6: ...eedback Copyright 2017 2018 Texas Instruments Incorporated Using the LED171596AEVM Evaluation Module Connect Tiva LaunchPad and EVM BOOSTXL LED171596A as shown in Figure 5 Figure 5 Connect Evaluation Board and LaunchPad Connect external power and ground to the EVM board BOOSTXL LED171596A ...

Страница 7: ...e 7 Win7 Stellaris In Circuit Debug Interface on Device Manager 3 4 Tiva ICDI Driver installation in Windows 10 The first step is to check that the driver for Tiva Launchpad is installed correctly on the system If the driver is installed correctly you should see the virtual com port show up in Device Manager as shown in Figure 8 Note that the actual COM number will vary The COM port should be iden...

Страница 8: ... communication the LED will be blinking red purple color The first time the GUI updates the firmware it can take up to 5 minutes If the update takes more than 5 minutes the firmware will need to be installed using LM Flash Programmer The LM Flash Programmer can be downloaded from www ti com Launch the programmer select TM4C123G Launchpad in Configuration tab refer to Figure 10 Then select Program ...

Страница 9: ...LED171596A EVM Check to accept the agreement and click Next button to proceed with installation Click Next button By default program will be installed in C Program Files x86 Texas Instruments LED171596A folder and Texas Instruments LED171596AEVM in start menu Click Next button to proceed with installation Check to create a desktop icon for the program and check to launch EVM software after install...

Страница 10: ...f default installation folder was not modified in the EVM software installation step or click the desktop icon LED171596A EVM Figure 14 Desktop Icon 3 8 Status Bar The status bar at the bottom of EVM software screen provides information regarding hardware connection status I2C SPI communication status and software versions Once the EVM software is connected to the hardware and starts to communicat...

Страница 11: ... of main menu Info Register and Control The components in each view are synchronized so any changes performed in one view of menu are automatically updated in the others Figure 16 Main Menu 3 10 Information View The Information view is shown when EVM software is started or Info icon is clicked and it provides brief information of the LED171596A For more detail information refer to the LED171596A d...

Страница 12: ...pyright 2017 2018 Texas Instruments Incorporated Using the LED171596AEVM Evaluation Module 3 11 Register View The register view is shown when Register icon is clicked and it provides the register values field values and descriptions Figure 18 Register View Collapsed Figure 19 Register View Expanded ...

Страница 13: ...all registers upon depression of the Write button Press Read All button to read back all the registers and the values will be updated on this table If any register values need to be changed simply double click on the individual bit values to change it in this table or press Write Register button to write all the registers at a time if Deferred is selected instead of Immediate from dropdown box Reg...

Страница 14: ... turned to a latch pin to support latch input for brightness and current register buffers when in normal mode As a default Latch pin button is disabled because the evaluation software supports automatic latch pin control every time when a value written to SRAM Latch pin button is enable when automatic latch is disabled see Section 3 12 8 Figure 22 Enable Pin IFSET Latch Pin 3 12 3 LED Brightness a...

Страница 15: ...ides a way to change the brightness value or the current value independently or to control more than one LED simultaneously The selected buttons turn red and the update buttons are shown on the LED brightness track bar and LED current track bar The brightness or current value of LEDs marked in red are updated when the update button is clicked It turns back to normal mode if a button clicked withou...

Страница 16: ... value and the value of tool tip is LEDxx_CUR regsier 0x100 LED number value The tool tip of the button will be shown when mouse point moves on a LED button If the bits of group disable or sloper of LED are set the information is shown under the LED button For example G2 means the LED is grouped as Group 2 D means the LED is disabled and S means the Slope bit of the LED is set Figure 25 LED Settin...

Страница 17: ... group selection value select the LED or LEDs and then click Group1 Group2 Group3 or UnGroup button All Group1 LEDs can be set to ungroup value at once if click UnGroup 1 button UnGroup 2 and UnGroup 3 buttons provide same function for the Group2 3 LEDs The newly configured values are transferred to EVM when Done button is clicked and the grouped LEDs display own group number Figure 28 Grouped LED...

Страница 18: ...LEDs on the LED171596AEVM and current disable selection value is displayed on the button To change disable selection value select the LED or LEDs and then click Disable or Enable button The newly configured values are transferred to the EVM when Done button is clicked and the disabled LEDs display own status as D Figure 31 Disabled LEDs 3 12 7 LED Sloper Setting LED Sloper registers 0x1CF 0x1DA ca...

Страница 19: ... and then click UnSloper or Sloper button The newly configured values are transferred to EVM when Done button is clicked and the sloper LEDs display their status as S Figure 34 Sloper LEDs 3 12 8 SW Latch and Auto Latch By default the evaluation software supports automatic latch pin control so latch pin set high and low every time when a value is written to SRAM to trigger updates of SRAM buffer I...

Страница 20: ...writing Red color means bit data 1b and gray color bit data 0b When the bit button is clicked the bit data is reversed and register data is written immediately Figure 36 Register Direct Access 3 12 10 ISET Control The maximum current reference of the LED driver constant current sink can be set using ISET The EVM GUI provides 10 mA 12 5 mA 20 mA 30 mA 40 mA 50 mA and 60 mA Disable the LED171596A ba...

Страница 21: ...erred to EVM when the Done button is clicked Figure 40 LED Driver Register Configuration 3 12 13 PWM Control The PWM group box provides information and control of CONFIG_PWM Register 0x00 and external PWM signal generation Simply enable_pwm_detector bit Bit 5 of Register 0x00 can be controlled and other bit information are displayed Figure 41 PWM Register Information The external PWM signal settin...

Страница 22: ...nput_edge_sel pwm_input_hysteresis and pwm_phase_shift_config bits The selected values are transferred to EVM when the Done button is clicked Figure 43 CONFIG_PWM Register Configuration 3 12 14 Master Sloper Setting The Master Sloper group box provides the interface to control of SLOPER_TARGET 0x1CE register and SLPERS_CONFIG 0x1CD register Figure 44 Master Sloper Setting 3 12 15 Status Register T...

Страница 23: ...ter 3 12 16 Interrupt Status Mask Clear The Interrupt group box provides the information and the interface to control INT_STATUS 0x4 register INT_MASK 0x5 register and INT_CLEAR 0x6 register Figure 46 Interrupt Status Mask Clear 3 12 17 Log Tab The Log tab provides the commands that have been sent to EVM and status of evaluation software Displayed logs can be cleared by clicking the button Clear F...

Страница 24: ...indow can be used to read and write any of the registers or run a predefined macro file The console window can be opened from Help Console and the list of available commands can be verified by typing help and pressing Enter Key Predefined macro file can be loaded and run through clicking the button Load File and the default folder path is C Users ID Documents Texas Instruments LED171596A LED171596...

Страница 25: ...d Layout 25 SNVU546C October 2017 Revised May 2018 Submit Documentation Feedback Copyright 2017 2018 Texas Instruments Incorporated Using the LED171596AEVM Evaluation Module 4 Board Layout Figure 49 Top Assembly Layer ...

Страница 26: ...ayout www ti com 26 SNVU546C October 2017 Revised May 2018 Submit Documentation Feedback Copyright 2017 2018 Texas Instruments Incorporated Using the LED171596AEVM Evaluation Module Figure 50 Top Layer Routing ...

Страница 27: ...om Board Layout 27 SNVU546C October 2017 Revised May 2018 Submit Documentation Feedback Copyright 2017 2018 Texas Instruments Incorporated Using the LED171596AEVM Evaluation Module Figure 51 Mid Layer 1 Routing ...

Страница 28: ...yout www ti com 28 SNVU546C October 2017 Revised May 2018 Submit Documentation Feedback Copyright 2017 2018 Texas Instruments Incorporated Using the LED171596AEVM Evaluation Module Figure 52 Mid Layer 2 Routing ...

Страница 29: ...m Board Layout 29 SNVU546C October 2017 Revised May 2018 Submit Documentation Feedback Copyright 2017 2018 Texas Instruments Incorporated Using the LED171596AEVM Evaluation Module Figure 53 Bottom Layer Routing ...

Страница 30: ...ww ti com 30 SNVU546C October 2017 Revised May 2018 Submit Documentation Feedback Copyright 2017 2018 Texas Instruments Incorporated Using the LED171596AEVM Evaluation Module 5 Schematic Figure 54 Schematic Page1 ...

Страница 31: ...i com Schematic 31 SNVU546C October 2017 Revised May 2018 Submit Documentation Feedback Copyright 2017 2018 Texas Instruments Incorporated Using the LED171596AEVM Evaluation Module Figure 55 Schematic Page2 ...

Страница 32: ...03 T D Samtec J2 J4 J8 J9 4 Header 100mil 3x1 Gold TH 3x1 header TSW 103 07 G S Samtec J5 2 Header 100mil 1pos Gold TH Testpoint TSW 101 07 G S Samtec J7 1 Terminal Block Receptacle 3x1 3 81mm R A TH Term Block 3 pos 1727023 Phoenix Contact J10 1 Header 100mil 17x2 Gold R A TH 17x2 R A header TSW 117 08 G D RA Samtec J11 1 Header 2 54mm 14x2 Gold R A TH Header 2 54mm 14x2 R A TH PRPC014DBAN M71RC ...

Страница 33: ...directional I2C Bus and SMBus Repeater 2 Channel Width 2 3 to 3 6 V 40 to 85 degC 8 pin MSOP DGK Green RoHS no Sb Br DGK0008A PCA9515BDGKR Texas Instruments U5 U6 U10 U11 U12 5 Single Pole Double Throw Analog Switch DCK0006A SOT 6 DCK0006A SN74LVC1G3157DCKR Texas Instruments U13 1 Buck Step Down Regulator with 3 to 17 V Input and 0 9 to 6 V Output 40 to 85 degC 16 Pin QFN RGT Green RoHS no Sb Br R...

Страница 34: ...evision History Revision History NOTE Page numbers for previous revisions may differ from page numbers in the current version Changes from B Revision March 2018 to C Revision Page Changed Instructions for Windows 7 Tiva ICDI driver installation 7 Added Instructions for Windows 10 Tiva ICDI driver installation 7 Added Programming firmware instructions 8 ...

Страница 35: ...on March 2018 to B Revision Page Added and one LEDARRAYEVM with 96 white LEDs The TIVA EK TM4C123GXL Launchpad NOT included in the EVM kit is required to run the GUI software 1 Updated photos Figure 1 and Figure 2 and Figure 3 and Figure 5 4 Changes from Original October 2017 to A Revision Page Updated Figure 49 through Figure 55 and Table 2 for A version of EVM previous version was E1 24 ...

Страница 36: ...y set forth above or credit User s account for such EVM TI s liability under this warranty shall be limited to EVMs that are returned during the warranty period to the address designated by TI and that are determined by TI not to conform to such warranty If TI elects to repair or replace such EVM TI shall have a reasonable time to repair such EVM or provide replacements Repaired EVMs shall be warr...

Страница 37: ...the user guide with the maximum permissible gain and required antenna impedance for each antenna type indicated Antenna types not included in this list having a gain greater than the maximum gain indicated for that type are strictly prohibited for use with this device Concernant les EVMs avec antennes détachables Conformément à la réglementation d Industrie Canada le présent émetteur radio peut fo...

Страница 38: ...ed loads Any loads applied outside of the specified output range may also result in unintended and or inaccurate operation and or possible permanent damage to the EVM and or interface electronics Please consult the EVM user guide prior to connecting any load to the EVM output If there is uncertainty as to the load specification please contact a TI field representative During normal operation even ...

Страница 39: ...COST OF REMOVAL OR REINSTALLATION ANCILLARY COSTS TO THE PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES RETESTING OUTSIDE COMPUTER TIME LABOR COSTS LOSS OF GOODWILL LOSS OF PROFITS LOSS OF SAVINGS LOSS OF USE LOSS OF DATA OR BUSINESS INTERRUPTION NO CLAIM SUIT OR ACTION SHALL BE BROUGHT AGAINST TI MORE THAN TWELVE 12 MONTHS AFTER THE EVENT THAT GAVE RISE TO THE CAUSE OF ACTION HAS OCCURRED 8 2 Specif...

Страница 40: ... TI Resource NO OTHER LICENSE EXPRESS OR IMPLIED BY ESTOPPEL OR OTHERWISE TO ANY OTHER TI INTELLECTUAL PROPERTY RIGHT AND NO LICENSE TO ANY TECHNOLOGY OR INTELLECTUAL PROPERTY RIGHT OF TI OR ANY THIRD PARTY IS GRANTED HEREIN including but not limited to any patent right copyright mask work right or other intellectual property right relating to any combination machine or process in which TI product...

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