STEVAL-ILL015V1 - LED dimmer demonstration board based on the
Contents
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3. 16 RGB high brightness LEDs STM32 microcontroller using internal HS oscillator High efficiency switching DC DC power supply using the ST1S010 DC power supply 7 5 18 V undifferentiated polarity over voltage protection DC input current 0 7 A max standard supply connector LED current regulation Controlled by 3 buttons a knob and a reset back button Available test point for each important signal JTAG interface for microcontroller firmware change update Error and over temperature LEDs for each LED driver 3 jumpers allowing disconnection of 3 LEDs from the driver for testing the error detection mode 3 jumpers allowing shorting of 3 LEDs from the driver for testing the error detection mode Mini USB connector for PC interconnection Figure 1 STM32 Cortex The board is distributed with firmware which enables standalone and non standalone demonstration Features include LED diagnostic Adjustable brightness and color of each individual LED Animated text GUI graphical user interface software for LED diagnostics see Figure 6 5 20 Hardware setup UM0574 2 2 1 2 2 2 3 2 4 6 20 Hardware setup Figure 2 shows the component description and layout of the STEVAL ILLO15V1 demonstration board Figure 2 STEVAL ILLO15V1 demonstration board layout 45V STM32 3 3V USB LED drivers Open POWER jumpers 7 18V Short jumpers JTAG RGB LEDs RESET Buttons Knob Error Flag Tempera
4. LO NEE cA9peeH ziapeaH dL 8 zZzJl e Ee Se Ris FJ coa wa EAEE ES Td LS D I naa H2 aee a ang 228 L astu sna codarzdis SY SOSA9H9D9G ZY 192984 8989 aoleoeria n elecec or brlerler rr Sv lor Z 8v Vga Era fe PREY Tee mE d m E YO egy Ip Ho ped LEI Aer vid AST eld sid eria Sid 10 qa185u qa185u ON Lada 040 33 dL ON ada wa 19 WOH 30 WG 31 62 ods lds qo ONE ON GH GEO 9H 9D98 ZHZD 78 8H 89 88 isd zsa esa lod EJO 18d og aia 16 20 UM0574 Bill of materials 6 Bill of materials Table 1 Bill of materials Designator Comment Description Footprint C1 4 7 pF 10 pF Ceramic capacitor 25 35 V 1812LH C2 470 nF Capacitor 0805 C3 100 nF Capacitor 0805 C4 100 pF 47 pF size D 16 V Tantal capacitor polarized 7343 LH C5 4 7 nF Capacitor 0805 C7 10 pF size A 16 V 10 V Tantal capacitor polarized 3528 ABLH C8 10 nF Capacitor 0805 C9 C17 100 nF Capacitor 0805 CN1 GM MLW20G Header 10X2 JTAG 10 pin dual row HDR2X10keyLH CN5 GM K375A Input power 4 4 V 36 V DC10B D1 D16 RGBLED LATB T686 TOPLED D17 BridgeL H Full wave diode bridge GMBridgeBig D18 ST SM6T33A SMA DDD1 ST_LOGO ST LOGO DDD2 ROH1 ROH1 DDD3 ROH2 ROH2 Hole1 hole4 Distance hole J 440247 2 e EN angle SMT B type receptacle 5 440247LH L1 3 3 uH Inductor inductor332 LD1 Yellow Typica
5. ST DISCLAIMS ANY EXPRESS OR IMPLIED WARRANTY WITH RESPECT TO THE USE AND OR SALE OF ST PRODUCTS INCLUDING WITHOUT LIMITATION IMPLIED WARRANTIES OF MERCHANTABILITY FITNESS FOR A PARTICULAR PURPOSE AND THEIR EQUIVALENTS UNDER THE LAWS OF ANY JURISDICTION OR INFRINGEMENT OF ANY PATENT COPYRIGHT OR OTHER INTELLECTUAL PROPERTY RIGHT UNLESS EXPRESSLY APPROVED IN WRITING BY AN AUTHORIZED ST REPRESENTATIVE ST PRODUCTS ARE NOT RECOMMENDED AUTHORIZED OR WARRANTED FOR USE IN MILITARY AIR CRAFT SPACE LIFE SAVING OR LIFE SUSTAINING APPLICATIONS NOR IN PRODUCTS OR SYSTEMS WHERE FAILURE OR MALFUNCTION MAY RESULT IN PERSONAL INJURY DEATH OR SEVERE PROPERTY OR ENVIRONMENTAL DAMAGE ST PRODUCTS WHICH ARE NOT SPECIFIED AS AUTOMOTIVE GRADE MAY ONLY BE USED IN AUTOMOTIVE APPLICATIONS AT USER S OWN RISK Resale of ST products with provisions different from the statements and or technical features set forth in this document shall immediately void any warranty granted by ST for the ST product or service described herein and shall not create or extend in any manner whatsoever any liability of ST ST and the ST logo are trademarks or registered trademarks of ST in various countries Information in this document supersedes and replaces all information previously supplied The ST logo is a registered trademark of STMicroelectronics All other names are the property of their respective owners 2008 STMicroelectronics All rights reserved STMicroelectr
6. amp EE eo Exit the application ok Incomming data E data received To perform error detection click on Perform error detection Error detection is performed correctly and does not depend on the mode to which the board is set DI 13 20 PC and software interconnection UM0574 14 20 Figure 12 Error detection mode performed BER Kei m 1 Connect board to the USB first 7 A e Cer 2 Connect power supply to board 3 Press this button KE eo ad Find board on COM port e 6 Hii he Boa found on COMA eo G e G ee 688 4 If board found press this button i Perform error detection Automatic error detection rate 7 1000 ms C 500 ms Ze None Exit the application URN s We The evaluation of the error detection over USB 1 If the jumpers P20 P21 and P22 are closed and the jumpers P1 P2 and P3 are open no defective LED should be reported by the application graphically after pressing the button Perform error detection See Figure 12 Moving the jumper from P21 to P2 should result in the indication of a simulated defective green LED in the first row and the second column and a simulated defective blue LED in the third row and the third column Exit the application and disconnect the board before testing another d Schematics troller connectors buttons USB lagram microcon Schematics Block d
7. is awarded points The game ends when the blue bricks reach the bottom of the LED area When the game is over the points obtained are shown Pressing the center button starts new game The knob changes the light intensity of the LEDs Mode B Wave color demonstration Mode B demonstrates various color effects The effect changes automatically after a few cycles of a given effect The effect can also be changed manually using the center button The knob changes the speed of the effect Mode C Solid color demonstration Mode C allows the display of a single color on all of the LEDs Pressing of the right button changes the colors in the following order red green blue yellow red green cyan green blue magenta red blue white red green blue and black all LEDs off The left button changes the colors in the reverse order The knob changes the light intensity of the LEDs Mode D Error detection DM Mode D performs and displays the detection of faulty LEDs Every two seconds an error detection is performed by the LED drivers If any defective LEDs are detected they can be identified by red light on the corresponding LED diode position By opening P20 P21 and P22 an open circuit can be created LED defective by disconnection to simulate a defect of the D1 green D2 green and D3 green LEDs as shown in Figure 5 By closing P1 P2 and P3 a short circuit is created LED defective by shorting to simulate a de
8. B signal over voltage protection SOT666IP 18 20 ky UM0574 Revision history 7 Revision history Table 2 Document revision history Date Revision Changes 10 Oct 2008 1 Initial release 19 20 UM0574 Please Read Carefully Information in this document is provided solely in connection with ST products STMicroelectronics NV and its subsidiaries ST reserve the right to make changes corrections modifications or improvements to this document and the products and services described herein at any time without notice All ST products are sold pursuant to ST s terms and conditions of sale Purchasers are solely responsible for the choice selection and use of the ST products and services described herein and ST assumes no liability whatsoever relating to the choice selection or use of the ST products and services described herein No license express or implied by estoppel or otherwise to any intellectual property rights is granted under this document If any part of this document refers to any third party products or services it shall not be deemed a license grant by ST for the use of such third party products or services or any intellectual property contained therein or considered as a warranty covering the use in any manner whatsoever of such third party products or services or any intellectual property contained therein UNLESS OTHERWISE SET FORTH IN ST S TERMS AND CONDITIONS OF SALE
9. RC ACER n de c RE 8 17 7 REVISION history 45er ree m RR CR CR CC AC Re G8 ee a lU 19 2 20 ky UM0574 List of tables List of tables Table 1 sipo dnei EE ELT E ET E E EENE E TE ET 17 Table 2 Document revision history 19 DI 3 20 List of figures UM0574 List of figures Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7 Figure 8 Figure 9 Figure 10 Figure 11 Figure 12 Figure 13 Figure 14 4 20 STMS32 Cone uu ciem seed ace eua dace eee adalat Ree hier E bandana E 5 STEVAL ILLO15V1 demonstration board layout lisse 6 The letter A indicates the first menu Wem 8 Demonstration board controls 222i 8 Moving the jumper from P21 to P2 results in detection of two defective LEDs 10 Software MS Windows 11 The USB host PC detection in progress lille 11 The USB host PC detected 2 0 2 cece eee 12 The USB host PC not found 12 Manual board connection 0000 c ce en 13 Board connected successfully 0 0 re 13 Error detection mode performed 00 eras mtaa rena eee 14 Block diagram microcontroller connectors buttons USB 2 22 15 Block diagram drivers high brightness LED 16 UM0574 STEVAL ILLO15V1 functional overview 1 STEVAL ILLO15V1 functional overview STEVAL ILLO15V1 demonstration board features Two STP24DP05 TQFP48 for connection of 16 RGB LEDs
10. d menu item Figure 3 The letter A indicates the first menu item a E a SE Sdt IN itm Au mme iom Lut Ss The board can be controlled by four buttons and one knob as shown in Figure 4 e Back reset button S4 exits from current task and returns to the main menu Left button S1 changes the menu item in descending order Center button S2 selects the displayed menu item Right button S3 changes the menu item in ascending order Knob R17 potentiometer changes the color of the menu display from blue to red Figure 4 Demonstration board controls UM0574 Demonstration firmware functionality description 3 1 3 2 3 3 3 4 The firmware mode menu items e Mode A Color Tetris Mode B Wave color demonstration Mode C Solid color demonstration Mode D Error detection DM Mode E Error detection LE OE Feature may not be available for all firmware releases Mode A Color Tetris Mode A is a simple game similar to Tetris The game begins with a green brick moving from the bottom to the top of the LED display The X axis position of the brick can be controlled using the left and right buttons Once the brick reaches the top of an LED area occupied by another settled brick it settles also and its color changes to blue Once the brick becomes blue it cannot be moved When a full row of blue bricks is completed the row disappears and the player
11. fect of the D6 blue D9 blue and D12 blue LEDs Entering the diagnostic mode is done using the DM signal 9 20 Demonstration firmware functionality description UM0574 Figure 5 Moving the jumper from P21 to P2 results in detection of two defective LEDs 3 5 Mode E Error detection LE OE Mode E which may not be available in some firmware releases demonstrates the same functionality as the mode D but entering the diagnostic mode is done using LE OE signals 10 20 UM0574 PC and software interconnection 4 PC and software interconnection Figure 6 Software MS Windows GE 5 en 1 Connect board to the USB first e e er 2 Connect power supply to board 3 Press this button EL Y Find board on COM port e E e l a Bond found on COMA ee 66 66 e e L eo ce ce S a M Automatic error detection rate ee ee e C 1000 ms 500 ms None LI e ee oco 906 amp e UE Exit the application ee al Incomming EE In order for the software to run correctly the following steps must be performed 1 Disconnect the power supply from the board Connect the board to the computer using the USB cable 2 3 Connect the board to the power supply 4 If Windows requests the installation of an appropriate driver use the driver supplied by ST VirtualCOMPort Figure 7 The USB host PC detection in progress 11 20 PC and software in
12. l yellow orange GaAs LED DO805LH LD2 Yellow Typical yellow orange GaAs LED DO805LH LD3 Yellow Typical yellow orange GaAs LED DO805LH LD4 Yellow Typical yellow orange GaAs LED DO805LH LD5 Red Typical red amber GaAs LED DO805LH P1 Header 2 Header 2 pin HDR1X2 P2 Header 2 Header 2 pin HDR1X2 P3 Header 2 Header 2 pin HDR1X2 P4 Signal for serial Header 3 pin HDR1X3 P5 Power for serial Header 2 pin HDR1X2 P20 Header 2 Header 2 pin HDR1X2 P21 Header 2 Header 2 pin HDR1X2 P22 Header 2 Header 2 pin HDR1X2 Lyr 17 20 Bill of materials UM0574 Table 1 Bill of materials continued Designator Comment Description Footprint R1 R4 2 2 KQ 0805 R5 1 kO 0805 R6 1 kO 0805 R7 750 Q 0805 R8 1 kO 0805 R9 1 kO 0805 R10 750 Q 0805 R15 330 Q Resistor 0805 R16 2 2 KQ Resistor 0805 R17 10 kQ Potentiometer VR5 R18 5 6 KQ Resistor 0805 R19 1 2 KQ Resistor 0805 R20 10 KQ 0805 R22 10 KQ 0805 R23 10 KQ 0805 R25 100 KQ 0805 R30 R45 27 Q 0603LH R46 100 Q Resistor 0805 R47 100 Q Resistor 0805 R48 100 Q Resistor 0805 EA LEFT Switch Button_double 2 CENTER Switch Button_double 3 RIGHT Switch Button_double S4 RESET EXIT Small switch Button_DT2112C U1 STP24DP05 LED driver 24 channel U2 STP24DP05 LED driver 24 channel U3 STM32F103Cx Microcontroller Cortex U4 ST1810 ST1S10 DFN8cool4LH U5 LF33xDT Linear voltage stabilizer SOT23 5L U6 USB_ESD US
13. onics group of companies Australia Belgium Brazil Canada China Czech Republic Finland France Germany Hong Kong India Israel Italy Japan Malaysia Malta Morocco Singapore Spain Sweden Switzerland United Kingdom United States of America www st com d 20 20
14. river If the temperature exceeds the maximal allowed temperature the driver automatically switches off its outputs The TF LED shines over the whole period while the driver outputs are switched off due to the over temperature Jumpers for LED failure simulation Some LED defects can be simulated The removal of jumper P20 P21 and P22 causes open circuits of the D1 green D2 green and D3 green LEDs respectively The attachment of the jumper to position P1 P2 and P3 causes a short circuit of the D6 blue D9 blue and D12 blue LEDs These simulated defects can be detected during activation of the error detection mode see Chapter 3 which describes the firmware modes The defective LED is indicated by switching of the corresponding red LED 7 20 Demonstration firmware functionality description UM0574 3 8 20 Demonstration firmware functionality description Main features of the firmware e Demonstrate brightness control for each LED separately e Demonstrate color control for each LED separately e Perform error detection to detect LED failure e Provide a simple game simulation A menu displayed on the RGB LEDs after powering up the board The menu items are depicted as the letters A B C D and E as shown in Figure 3 After power up the letter A the first item on the RGB LED array begins blinking Pressing the buttons changes the display to the next successive letter to permit the selection of the desire
15. terconnection UM0574 Figure 8 The USB host PC detected Figure 9 The USB host PC not found 5 Run the SWforDimmer exe application on the computer 6 Ifthe board is not detected automatically press the button Find board on COM port as shown in Figure 10 12 20 ky UM0574 PC and software interconnection Figure 10 Manual board connection i BEE 1 Connect board to the USB first PR onnect board to the irst 2 Connect power supply to board L e c ky 1 3 Press this button ST LAB Prague I Czech Republic Board not ound ee G Gg e 9 ei 4 If board found press this button ee e 9 ei Automatic error detection rate 7 ee ee C 1000 ms 500 ms None e e o ee ep ep e EIE Exit the application Er ol Incomming data a NI If the board is found and connected successfully a green label is displayed on the application as shown in Figure 1 1 Figure 11 Board connected successfully ini x Wc t board to the USB first onnect board to the irst amp EI e er 2 C t ly to board 3 onnect power supply to boar mr fe Er yy ST LAB Prague e I Czech Republic Board found on COMA ee the label becomes green 9 1 4 If board found press this button ee ee ee Perform error detection eo e e I Automatic error detection rate 7 ee ee ee 1000 ms 500 ms None eo e amp ee G G Esc
16. ture Flag Power supply The demonstration board can be supplied by a DC voltage from 7 5 V to 18 V The power source must deliver a current of 0 7 A Since the board features a built in diode bridge the polarity of the input voltage is not specified Microcontroller JTAG The STM32 on board microcontroller can be programmed and debugged using the standard JTAG 20 pin connector included on the board Microcontroller clock reset and USB clock The STM32 microcontroller uses its internal RC oscillator to generate an 8 MHz clock after PLL is converted to 48 MHz The clock is used to drive the USB also Since the internal RC oscillator does not guarantee clock stability which is defined in the USB specification we do not recommend using the internal oscillator together with USB functionality The USB is used in this case only for demonstration purposes but performance is limited due to internal RC oscillator stability issues Error Flag and Temperature Flag signals Each LED driver has one pin dedicated to an Error Flag EF signal and Temperature Flag TF signal Both signals can directly drive an LED The LEDs are assembled on the board and the driver status can be easily checked ky UM0574 Hardware setup 2 5 The EF indicates the condition of the driven LEDs If any of them is found to be defective error detection mode is activated and the EF LED turns on The TF indicates the thermal condition of the LED d
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