USER MANUAL STM32 Based LED Matrix Display Demo - Digi-Key
Contents
1. 9 Hi ja 11 se j T 21 26 Rev 1 0 STMicroelectronics SL STM32 Based LED Matrix Display Demo User Manual 6 BOM Table 1 BOM Of Microcontroller based Control Unit Referenc Manufacturer s e ordering code Supplier Designat Component Orderable Ordering Quan or Description Package Manufacturer Part Number Supplier Code tity STM32F103VBT6 Mi STM32F103VB U2 crocontroller LQFP ST T6 1 ST485A U3 ST485ABDR SO8 ST BDR 1 L9615D CAN U4 Transceiver SO8 ST L9615D 1 Not M25P128VMF6TP S M25P128VMF6 Mou U5 erialFlash SO16 ST TP nted Not SPZB260 Zigbee Mou U6 Moudule ST SPZB260 nted TDA2822D Post U7 Amplifier SO8 ST TDA2822D 1 TS461CLT Rail to U8 rail op amp SOT23 5L ST TS461CLT 1 LD1086DT33TR Volt LD1086DT33T U9 age Regulator DPAK ST R 1 ST3232CDR RS323 U10 U11 2 Driver Receiver SO 16 ST ST3232CDR 2 STM1001RWX6F Re STM1001RWX U12 set Ic SOT23 3 ST 6F 1 U13 USBLC6 2P6 SOT 666 ST USBLC6 2P6 1 M24M01 Not HWMN6TP EEPRO M24M01 Mou U14 M SO8 ST HWMN6TP nted STPS1L30A Schottk Z1 y Rectifier SMA ST STPS1L30A 1 520 ECS 3276 18 Y1 32 768kHz XTAL 3 ECS ECS 327 18 9X Mouser 9X 1 559 FOXSLF 080 FOXS080 Y2 8Mhz XTAL 3 Fox 20 Mouser 20 LF 1 538 USB USB B Type Mini 67503 CONN1 Connector SMD Molex 67503 1020 Mouser 1020 12. USER MANUAL STM32 Based LED Matrix Display Demo Introduction This user manual describes the operation of STM32 based LED Matrix Display Demo board This board demonstrates the capability of STP16DP05 LED driver to drive the matrix LED panel The complete system includes one master board one slave board and LED Matrix Display panels Master and slave boards are STM32 microcontroller based control units which are used for configuring the display settings for STP16DP05 display driver This unit has a GPS module interfaced to it through an USART port The GPS data can be displayed with information of latitude and longitude and also the real time clock The display can be configured for any of the nine different display modes and nine different soeeds using a PS2 keyboard Display panels can also be configured through the HyperTerminal using the serial interface present on control units System also consists of audio out for playing back the wav file pre recorded in micro sd card Figure 1 LED Matrix Control Unit Connector for External Speakers Address Selection Switches PC Uart DB9 Connector GPS Module DB9 Connector Wago Connector ForPower 10 x 2 Header for FRC cable connection to Display Panel JTAG connector for Programming Wago Connector for R5485 Connection Numeric Keypad P52 Connector for Keyboard Connection Rev 1 0 STMicroelectronics 1 26 STM32 Based LED Mat
3. Note At any point of system press twice the ESC key on key board attached to master unit to return back to main menu Note Untill we enter one of the Modes of system pressing of any key other than F1 F2 F3 F6 will show a message of Key Not Allowed Note In PC USART mode key board attached to mother unit will not be active for data entry Only ESC key will be functional in this mode Version1 0 STMicroelectronics SL STM32 Based LED Matrix Display Demo User Manual Figure 10 Micro SD card Connection 443530 1 Micro SD Card Connector gt z g TT ae STMicroelectronics Rev 1 0 19 26 SL STM32 Based LED Matrix Display Demo User Manual 5 Schematic STM32 based display driver demo schematic is made in 2 parts First one is for microcontroller based control unit and second is for LED display panel Figure 11 shows the schematic for control unit and figure shows the schematic for display panel Figure 11 Schematic for Control Unit l PS 2 CONNECTOR GE SELECTION MICROCONTROLLER SECTION Version1 0 STMicroelectronics 20 26 Figure 12 LED Display Panel Schematic STM32 Based LED Matrix Display Demo User Manual SALA A a EA ri A 48 84 HA 44 44 44144 8444 1 SALGA
4. 10 x 2 header Ext Con present on master at one side and in header J1 INPUT on display panel at other side If needed display panels can be cascaded in series to make a longer display To cascade display panels connect 20 pin flat ribbon cable from jumper J3 OUTPUT of first panel to jumper J1 INPUT of second panel Figure 6 shows connections for cascading of display panels Similarly connect frc cable from jumper J3 OUTPUT of second panel to jumper J1 INPUT of third panel and so on to make a longer display Up to 8 such display panels can be cascaded in series Step 3 Connect the power to master control unit and to display panel as explained in section1 3 Step 4 LCD on master control unit will show Press to enter Configuration Mod for 4 seconds Step 5 Press on keypad present on board lf 4 seconds has elapsed and the board was not configured then it will enter in the mode which was last configured To again configure it press reset button Step 6 If 4 was pressed then LCD will show Master Sel Entr 1 and Slave Sel Entr 2 Step 7 Press 1 on keypad LCD will show MASTER BOARD Step 8 After 2 Seconds LCD will start the demo showing Led Matrix Demo Step 9 Display will start showing 4 options 1 Press F1 For PC UART Comm 2 Press F2 For GPS Data Display 3 Press F3 For Typing Data 4 Press F6 For Demo Mode Step 10 Press F1 or F2 or F3 or F6 on keyboard to
5. 571 DB9 through Tyco 5747844 VB1 Connector Female hole Electronics 5747844 4 Mouser 4 1 571 through Tyco 5747840 VB2 DB9 Connector Male hole Electronics 5747840 4 Mouser 4 1 LCD Connector and 16 x 2 alphanumeric 16 x ODM16216 J1 LCD 1Bergstrip Oriole 9SL3 AX Oriole 1 538 LED Board 10x2 70246 J2 connector header Molex 70246 1001 Mouser 1001 1 22 26 Version1 0 STMicroelectronics SL STM32 Based LED Matrix Display Demo User Manual J5 J14 J1 3x1 TSW 150 5 3 PIN Berg Strip Bergstrip Any Samtec 32 G S 3 7 PIN Berg Strip and 7 x1 pin KEYPAD3 J6 Keypad Bergstrip Any Futurlec X4B 1 Not 8 pin header zigbee 8 pin Mou J8 header header Any nted 3 pin CP1 through 3523NG J9 Audio Jack hole CUI SJ1 3523NG Digikey ND 1 538 10x2 70246 J10 Jtag Connector header Molex 70246 1001 Mouser 1001 1 5X TSW 150 J12 J16 Berg Strip Jumers 1Bergstrip Any Samtec 32 G S 1 through Phoneix 651 J18 screw type connector hole Contact 1729131 Mouser 1729131 1 Proconn MSPN09 X0 CONN1 MMC card connector smd Technology 1000 1 through Phoneix 651 J17 screw type connector hole Contact 1729128 Mouser 1729128 1 638 D1 D3 LED Red LED 3mm Everlight EL 204HT Mouser 204HT 2 Panasonic ECJ PCC472B C1 C2 4 7nF SMD0805 ECG 2VB1H472K Digikey NTR ND 2 Panasonic ECJ PCC100C C3 C4 10pF SMD0805 ECG 2VC1H100D Digikey NTR ND 2
6. Murata Electronics GQM2195C1H2 490 3607 C5 C6 20pF SMD0805 North America 00JB01D Digikey 2 ND 2 Panasonic ECJ PCC103B C7 C30 10nF SMD0805 ECG 2VB1H103K Digikey NTR ND 2 C8 C9 C 10 C15 C 16 C17 C 18 C19 C 20 C21 C 22 C28 C 33 C34 C 35 C40 C 41 C42 C 46 C47 C 48 C49 C 50 C51 ECJ C52 C53 Panasonic 2VB1E104K or PCC1828 C54 C55 100nF SMD0805 ECG eguivalent Digikey CT ND 28 74 C23 C24 293D106X96R3 293D106 C25 C26 Vishay Spragu A2TE3 or X96R3A2 C44 C45 10uF Case A e eguivalent Mouser TE3 6 C27 C29 Panasonic ECJ PCC1834 C31 33nF SMD0805 ECG 2VB1H333K Digikey TR ND 3 Panasonic ECu PCC470C C32 47pF SMD0805 ECG 2VC1H470J Digikey GTR ND 1 SI STMicroelectronics Rev 1 0 23 26 STM32 Based LED Matrix Display Demo User Manual Panasonic ECJ PCC1842 C36 4 7uF SMD0805 ECG 2YF1A475Z Digikey TR ND 1 Panasonic ECJ PCC2288 C38 3 3uF SMD0805 ECG 2FB1A335K Digikey TR ND 1 Panasonic ECJ PCC181C C39 180pF SMD0805 ECG 2VC1H181J Digikey GTR ND 1 through TDK FK22X5R0J107 445 2902 C43 100uF hole Corporation M Digikey ND 1 Panasonic ECJ PCC150C C56 C57 15pF SMD0805 ECG 2VC1H150J Digikey NTR ND 2 R1 R3 R 9 R18 R1 9 R21 R2 RNC20T2 3 R42 Stackpole RNC 20 T2 988KBR R45 988k SMD0805 Electronics Inc 988K 0 1 R digikey ND 9 RNC20T9 Stackpole RNC 20 T9 8 52KBR R2 3k5 SMD0805 Elec
7. 5 gt Typing Data mode Mode 6 gt Stable Display Mode 7 gt Flashing mode Mode 8 gt Curtain Right i Mode 9 gt Curtain Left If the mode entered is other than 1 9 then default mode will be selected and message will be seen on terminal Default Mode Right To Left As soon as mode is entered selected mode will be seen on hyper terminal and then the next message will be Enter Speed Entr between 1 9 This speed is for seeing the display on LED Matrix Speed 1 is fastest and 9 is slowest If speed entered is other than 1 9 then default speed of 2 will be selected Next message will be Enter String Enter the string maximum allowed string length is of 200 letters When required string is entered hit ENTER key on keyboard Data will be sent to LED Matrix display and can be seen over there Next message on hyper terminal will be Enter Y to Re enter Display Mode Settings or any other key to Exit PC UART mode Thus if Y is entered then system will start from step 8 If any other key is entered then system will exit from PC UART mode and normal menu will be seen on LCD of master control unit m O T w Figure 9 ASCII settings of Hyper terminal in Computer 16 26 HyperTerminal test Properties Connect To Settings ASCII Setup 41 4 Function arrow and ctrl keys act as ASCII Sending Terminal keys O Windows keys Send line ends with line feeds Backspace key sends Ech
8. is used for controlling the LED display in accordance to the configuration received from control unit 2 1 Description of Microcontroller based Control Unit 6 26 Control unit is STM32 microcontroller based board This board has interfaces for gt PS2 keyboard DB9 Female connector for PC serial port UART connection DB9 Male connector for serial UART connection to GPS module Onboard Numeric Keypad Audio Jack and also 2 pin connector for external speaker Screw type connector for RS485 communication between master and slave control units 10 x 2 header Ext Con for flat ribbon cable connection to display unit Slot for micro SD card Screw type connector for 5V DC power connection This microcontroller based unit is used to control the display board This unit can be configured to operate as master responsible for sending the commands for dipaly control or as slave unit responsible for receiving the commands and executing it on display unit In every system one control unit acts as a master VV VV VV V WV Address Configuration Of Control Unit Each control unit is having 8 dip switches SW2 These switches are used to configure the address for the control unit Address configuration for control unit is done by moving the switches either to high or to low positions Eight I O lines are used for address allocation to the control unit Thus upto 255 addresses can be assigned to any control board Board can have any address bet
9. settings as shown in Figure 9 Power up master control unit LED Panel and also slave control unit if connected LCD on master will show the menu program asking for Press F1 for PC USART Comm Press F1 key on the keyboard attached to PS2 connector of master control unit HyperTerminal will show a message USART HyperTerminal Communication Demo Maximum Allowed String Length is 200 Words Enter Display Board Address Enter 1 255 9 Enter the slave control unit address as seen on LCD of slave control unit or address of master 255 and then press Enter key on PC keyboard Addresses allowed are between 1 and 255 10 If the entered address is not present then there will be an error message on Hyper terminal Address Mismatch Enter Display Board Address Check the address of slave board and then re enter on hyper terminal 11 When address is matched then Message on hyper terminal is Enter No Of LED Boards Enter number of LED display panels connected in cascade to the selected control unit 12 Next message will be Enter Mode Entr between 1 9 This is for entering one of 9 display modes These modes are as followings O NGO STMicroelectronics Rev 1 0 15 26 STM32 Based LED Matrix Display Demo User Manual 13 14 15 16 17 Mode 1 gt Curtain Up Mode 2 gt Curtain Down Mode 3 gt Left To Right Scroll Mode 4 gt Right To Left Scroll Mode
10. 42 GPS Communication Mode iscissi aeiae enei aia inaaianei aeaiee 16 4 3 Key Board Typing Mode vereis panepen asap ae ka p apaapa 16 4 4 Deo LeTo E E A T E 17 SehematiC A TTT 19 ON E 21 REVISION aaa 26 STMicroelectronics Rev 1 0 3 26 STM32 Based LED Matrix Display Demo User Manual 1 Getting Started 1 1 Package Contents STM32 based led matrix display demo package consists of the hardware and supporting document gt Hardware One demonstration mother board One LED Matrix Display Panel gt Documentation User Manual for operating the demonstration board 1 2 Hardware Description This complete system has one control unit and a display unit Control Unit is microcontroller based demo board and display unit is LED MATRIX board Major Components on Control Unit are STM32F103VBT6 32 bit Microcontroller ST485ABDR RS485 Transceiver LD1086D2T33TR Voltage Regulator ST3232BDR RS232 Transceiver TS461CLT Rail to rail operational amplifier TDA2822D post amplifier STM1001RW6XF Reset IC STPS1L30A Schottky diode ESDALC6V1W5 ESD protection device 16 x 2 Alphanumeric LCD Mini USB connector External Power Supply Screw type Connector VV VV VV VVV VV WV Major Components on Display Unit are gt STP16DPO5MTR Display Drive
11. Con present on slave at one side and in header J1 INPUT on display panel at other side If needed display panels can be cascaded in series to make a longer display To cascade display panels connect 20 pin flat ribbon cable from jumper J3 OUTPUT of first panel to jumper J1 INPUT of second panel Figure 6 shows connections for cascading of display panels Similarly connect frc cable from jumper J3 OUTPUT of second panel to jumper J1 INPUT of third panel and so on to make a longer display Up to 8 such display panels can be cascaded in series Step 5 Connect Master and Slave control units using twisted pair cable Ensure that RS485 at master is connected to RS485 at slave and RS485 at master is connected to RS485 at slave Connections are made at screw type connector J18 Figure 8 shows the RS485 connection topology Version1 0 STMicroelectronics SI STM32 Based LED Matrix Display Demo User Manual Step 6 Power up master control unit slave control units and Display panels using DC power supplies Please ensure in the case of cascading of display panels power should be individually supplied at J5 screw type connector on each display panel Step 7 LCD on master and slave units will show Press to enter ConfigurationMod This will be displayed for 4 seconds If master and slave boards are configured in Step 1 then don t press and boards will resume the functionality in 4 seconds Step 8 Master control uni
12. Enter Display Board Address Enter the slave board address where data is to be displayed on LED Matrix panel Addresses allowed are in between 1 and 255 255 is fixed for master unit If wrong data is entered then LCD will show Address Mismatch and will again ask for address When address is matched then LCD will ask for entering the number of display panels connected in cascade at selected slave device As soon as number of display panels is entered LED Matrix will start showing Time Latitude Longitude and Satellite fixture status on LED Matrix Press ESC on keyboard to exit from GPS mode and return to main menu 4 3 Key Board Typing Mode This mode is for user interaction using the key board attached at PS2 connector mother board Below are the steps for operating in Typing mode Steps 1 Connect Key Board to PS2 connector on master control unit 2 Power up master control unit LED Panel and slave control unit if present 3 LCD on master will show the menu program asking for Press F3 for Typing Data 4 Press F3 key on the keyboard attached to PS2 connector of master control unit 5 LCD at master will show Enter Display Board Address Enter the slave board address where data is to be displayed on LED Matrix panel Addresses allowed are between 1 and 255 255 is fixed for master unit If wrong data is entered then LCD will show Address Mismatch and will again ask for address 6 When Address is ma
13. ST 5 4 538 10X2 10 X2 BOX 70246 1 3 HEADER HEADER Molex 70246 1001 Mouser 1001 2 2 PIN 2 pin Molex Through Phoenix 651 J5 J6 Connector hole Contact 1729128 Mouser 1729128 2 475 LS T676 2683 1 D1 to D512 PLC SMD R151 1 Z Osram Digikey ND 512 ECJ C1 C2 C3 C4 Panasonic 2VB1E104K or PCC182 C6 C7 100nF SMD0805 ECG equivalent Digikey 8CT ND 6 74 293D106X96R3 293D106 Vishay Spragu A2TE3 or X96R3A2 C5 C10 10uF Case A e eguivalent Mouser TES 2 647 C8 C11 C12 UKW1E2 C13 220uF SMD0805 Nichicon UKW1E221MPD Mouser 21MPD 4 R1 R2 R19 R 292 1 0K RC or 292 20 1k SMD0805 Xicon eguivalent Mouser 1 0K RC 4 R3 R4 R5 R6 R7 R8 R9 R1 0 R11 R12 R1 3 R14 R15 R1 292 4 7K RC or 292 6 R17 R18 4k7 SMD0805 Xicon eguivalent Mouser 4 7K RC 16 26 26 Version1 0 STMicroelectronics SL STM32 Based LED Matrix Display Demo User Manual 7 Revision History Revision Date of modification Description of modification 1 0 December 2 2008 Initial draft S7 STMicroelectronics Rev 1 0 27 26
14. control unit and INPUT header at display panel and other side to second display panel using OUTPUT header at first panel and INPUT header at second panel Note Length of the flat ribbon cable FRC should not be exceeded 30 cm 8 26 Version1 0 STMicroelectronics SL STM32 Based LED Matrix Display Demo User Manual Figure 6 Connection of Display panels Es Con at control 20 pin Flat Ribon INPUT header at OUTPUT header at Unit Cable display panel display panel SL STMicroelectronics Rev 1 0 9 26 STM32 Based LED Matrix Display Demo User Manual 3 Configuration of System Whole system can be connected in one of the following configurations 1 One control Unit and one display unit without a slave unit 2 Two control units one acting as a master and other as slave and one display unit 3 Multiple control units one acting as a master and rest other as slaves and multiple display units each display unit connected to each slave One display unit can have up to 8 cascaded panels that could be controlled by a single slave unit 3 1 One Control Unit and One Display Unit Configuration 10 26 In this configuration there is single control unit and a single display unit Control unit will act as master Below are the steps to operate the system in this configuration Step 1 Connect PS2 keyboard to the control unit Step 2 Connect the control unit with display panel using 20 pin flat ribbon cable Insert the cable in
15. e 8 RS485 Multi Drop Topology Slave RS485 RS485 RS485 RS485 Slave Master RS485 RS485 RS485 RS485 Slave Slave STMicroelectronics Rev 1 0 13 26 STM32 Based LED Matrix Display Demo User Manual 14 26 Note R is the termination resistance used for impedance matching Version1 0 STMicroelectronics SL STM32 Based LED Matrix Display Demo User Manual 4 Modes Of System Operation LED Display demo board has 4 different modes of operation These are 1 PC UART Communication Mode 2 GPS Module Communication Mode 3 Key Board Typing Mode 4 Demo Mode As soon as master control unit is powered up LCD on master board will show MASTER BOARD for first 2 seconds and then a menu will be started which ask for pressing F1 F2 F3 F6 for selecting one of the above mentioned modes 4 1 PC UART Communication Mode SII Master control unit communicates with computer using UART communication protocol Female DB9 connector on control unit is used to connect to a computer using serial connection cable Below are the steps to communicate using HyperTerminal of computer Steps 1 Connect a serial cable between serial port of computer and female DB9 connector of master control unit VB1 2 Connect PS2 keyboard to master control unit 3 Configure HyperTerminal on computer using following settings Bits per Second 115200 DataBits 8 Parity None Stop bits 1 Flow Control None Make the ASCII
16. igure 6 shows connections for cascading of display panels Similarly connect frc cable from jumper J3 OUTPUT of second panel to jumper J1 INPUT of third panel and so on to make a longer display Up to 8 such display panels can be cascaded in series Step 5 Connect Master and Slave control unit using twisted pair cable Ensure that RS485 at master is connected to RS485 at slave and RS485 at master is connected to RS485 at slave Connections are made at screw type connector J18 Figure 7 shows the RS485 connection Step 6 Power up master control unit slave control unit and Display panel using DC power supplies Step 7 LCD on master and slave control unit will show Press to enter ConfigurationMod If master and slave boards are already configured in step 1 then don t press and boards will resume its functionality in 4 seconds Step 8 Master control unit will start the demo showing Led Matrix Demo and slave control unit will start showing its own address Address is configured using on board switches Step 9 Display at master will start showing 4 options 1 Press F1 For PC UART Comm 2 Press F2 For GPS Data Display 3 Press F3 For Typing Data 4 Press F6 For Demo Mode Step 10 Press F1 or F2 or F3 or F6 on keyboard attached to master board to select one of the above mentioned modes Step 11 Based on which of the above mentioned key is pressed system will enter in one of the ab
17. nel connected to Master unit This mode is supported with audio output Below are the steps for demo mode Steps 1 Save an audio file in wav format in micro SD card Save the audio file with name Configuration for audio file should be 8Bit 8kHz mono This is the audio which will be heard from board Insert micro SD card in memory card slot connected at back side of master as shown in Figure 10 Connect a display panel to master control unit using 20 pin flat ribbon cable Connect PS2 keyboard to master unit Connect external speaker to two pin audio connector near audio jack or to audio jack Audio jack is having a mono output only OF A N D Power up master control unit and also the display panel 7 Menu will be started on LCD It will display Press F6 for Demo Mode Press F6 key to enter in Demo mode 8 As soon as F6 is pressed LCD will show message for entry of display panel number Enter No Of LED Boards Enter number of display panel connected to master unit 9 After number of led panels is entered audio file saved as STN2 in micro SD card will be played on speaker and LED panel will show a message Wish You A Happy Journey 10 Press ESC key on key board to exit from this mode and go back to menu Note For DEMO mode microSD card should be insetred in the card slot else no data display will occur ESC key is used to exit from this mode at any point of time
18. nic ERJ P100ATR R37 100 SMD0805 ECG 6GEYJ101V digikey ND 1 Panasonic ERJ P18KATR R43 18k SMD0805 ECG 6GEYJ183V digikey ND 1 Panasonic ERJ P15KATR R44 15k SMD0805 ECG 6GEYJ153V digikey ND 1 Panasonic ERJ P8 2KAT R47 82k SMD0805 ECG 6GEYJ822V digikey R ND 1 Not Mou R52 DO NOT MOUNT nted R54 R55 R56 R58 Panasonic ERJ P330ATR R59 R67 330E SMD0805 ECG 6GEYJ331V digikey ND 1 Not Mou R66 DO NOT MOUNT SMD0805 Any nted 612 Push Button RESET through TL1105 SW1 switch hole E Switch TL1105F250Q Mouser 250 1 through C amp K SW2 DIP 8 switch hole Components BD08 Mouser 611 BD08 1 Mini Din key board through JS1 connector hole Kobiconn 161 2306 Mouser 161 2306 1 576 0217 500 HXP 1 amp Fuse through Keystone 0217 500HXP 534 F1 connector Fuse hole Electronics 4527C Mouser 4527C 1 Not Coin Battery through Mou BT1 connector hole Any nted SI STMicroelectronics Rev 1 0 25 26 STM32 Based LED Matrix Display Demo User Manual Table 2 BOM of LED Display Panel Manufacturer s ordering code Supplier Reference Component Orderable Part Ordering Designator Description Package Manufacturer Number Supplier Code Quantity STP16DPO5MT STP16DPO5MT U1 U2 U5 U6 R Display driver S024 ST R 4 U3 U4 74VHC245MTR SOP20 ST 74VHC245MTR 2 Q1 Q2 Q3 Q4 Q5 Q6 Q7 Q 8 TIP127 TO 220 ST TIP127 8 ESDALC6V1W ESDLALC6V1W P1 P2 P3 P4 5 Quad transil SOT323 5L
19. ntr 1 and Slave Sel Entr 2 To configure the board as Master press 1 or to configure the board as Slave press 2 on keypad 1f 1 was pressed then LCD will show MASTER BOARD for 2 seconds and then start the Master routine on board 2 was pressed then LCD will show SLAVE BOARD for 2 seconds and then start the Slave routine on board On next power up of board LCD will again show the message Press to enter Configuration Mod for 4 seconds but if 4 is not pressed in 4 seconds then board will enter in the mode which was configured last time 2 2 Description of LED Driver based Display Unit Display unit is STP16DPO5MTR LED display driver based panel Each display panel is having four STP16DPO5MTR LED display drivers two buffers eight darlington pair and a matrix of16 x32 LED s Each pannel can be connected in series to make a larger display This series connection between the display panels is through 10 x 2 header 20 pin flat ribbon cable is used to connect two display panels Input to display panel is coming from control unit through 20 pin Flat ribbon cable Thus first display panel is connected to control unit to receive the data and also to next display panel to cascade the data further Total 8 such pannels can be cascaded in series Figure 6 shows the connection of Display panel First panel is connected at both side one to control unit using 20 pin cable between Ext Con header on
20. o typed characters locally CtH O Del O Ct H Space Line delay 0 milliseconds a Character delay 0 milliseconds Emulation Auto detect v ASCII Receiving Telnet terminal ID ANSI Append line feeds to incoming line ends Backscroll buffer lines 500 C Force incoming data to 7 bit ASCII a Wrap lines that exceed terminal width Play sound when connecting or disconnecting E x Cea Input Translation ASCII Setup ok OK Cancel Connected 0 00 21 Auto detect Auto detect Version1 0 STMicroelectronics SI STM32 Based LED Matrix Display Demo User Manual 4 2 GPS Communication Mode Global Positioning System mode is used for interacting with externally connected GPS module and display Time Latitude Longitude and Satellite fixture status Below are the steps for communicating with GPS module Steps 1 DAR ON Connect a serial cable between GPS module and DB9 male connector VB2 of master control unit GPS systems should follow the handshaking protocol for serial communication Connect PS2 keyboard to master control unit Power up master control unit LED Panel and also slave control unit if connected LCD on master will show the menu program asking for Press F2 for GPS Data Display Press F2 key on the keyboard attached to PS2 connector of master control unit LCD at master will show GPS mode selected and
21. ove mentioned modes Operation in each mode is explained in section 4 Step 12 Master control unit will send commands to slave control unit Slave control unit will process these commands and configure the display panel for displaying entered data Step 13 Press ESC on keyboard attached to master board to exit from present mode After this system will resume from Step 9 If new address entered for slave selection matches with the slave address then slave display will be interrupted else display will continue will old data display SII STMicroelectronics Rev 1 0 11 26 STM32 Based LED Matrix Display Demo User Manual Figure 7 RS485 Communication EEG Audjo Sec R5485 Twisted Pair Connection 3 3 Multiple Control and Display Unit Configuration 12 26 In this configuration there are multiple control units and multiple display panels One Control unit should be master and rests other are slave By default system comes with one master and one display panel Below are the steps to operate the system in this configuration Step 1 Configure one control unit as Master and other control units as Slave as explained in section 2 1 2 Step 2 Configure the address of Slave boards using the onboard DIP switches as explained in section 2 1 1 Step 3 Connect PS2 keyboard to the master control unit Step 4 Connect display panels to each Slave control unit using 20 pin flat ribbon cable Insert the cable in 10 x 2 header Ext
22. r gt TIP105 Darlington pair gt 74VHC24MTR Buffer gt 16x32 LED Matrix 1 3 Power Supply Unit Power supply for control unit is 5Volt 0 5Amps DC and for each Display board it is 3 5V 5Volt 3Amps DC Both control unit and display unit are having one screw type connector each for power supply connection Figure 3 shows the power supply connection for Control Unit and Figure 4 shows the power supply connection for display unit In each display panel there are 2 screw type connectors for power connection VCC 5V0 and GND are mentioned on each of these connectors Power can be be S7 STMicroelectronics Rev 1 0 4 26 STM32 Based LED Matrix Display Demo User Manual SL applied to any one of these two connectors to power the LED panel Each panel is to be powered externally and individually Figure 3 Power Supply Connection On Control Unit GND Connection 45 Positive Connection Figure 4 Power Supply Connection for LED Display Panel N 7 7722 1731 n Je STMicroelectronics 4 7 Ma y 4 4 Of oe oo Rev 1 0 ag 3 6 9 O8 DO es 7 oo aB ml 4 43 5 26 STM32 Based LED Matrix Display Demo User Manual 2 Description Of System This STM32 based display demo system is having a microcontroller based control unit and a LED driver based display unit Control unit is used for configuring the display driver and display unit
23. rix Display Demo User Manual 2 26 Figure 2 LED Display Panel 002 77 Version1 0 STMicroelectronics STM32 Based LED Matrix Display Demo User Manual Table of Contents 1 SL Getting Stand RNGA 4 1 1 Package EOMENIS 10 a eet A ar PU SA ma ta a 4 1 2 Hardware Description 41 44 ttvdtita a Mit a Aa 4 1 3 Powest Supply Una manas Ak a AD 3A 4 Description Of System aa 6 2 1 Description of Microcontroller based Control Unit ceeeeceeeeeeeeeeeeeeeeseeeneneeeeneees 6 2 1 1 Address Configuration Of Control Unit eee cece eeeeeeeeeeeeaeeeeseeeeesaeeseaeeseaeeenseaeeeeaes 6 2 1 2 Selecting the Control Unit as Master or Slave 8 2 2 Description of LED Driver based Display Unit 0 00 0 eee ees 9 8 Configuration Of System aaa nad iEn 10 3 1 One Control Unit and One Display Unit Configuration wwrneenrea 10 3 2 Two Control Units and One Display Unit Configuration 11 3 3 Multiple Control and Display Unit Configuration 12 Modes 016 3 1 1 1 01 9 14 4 1 PC UART Communication Mode 9 14
24. select one of the above mentioned modes Step 11 Based on which of the above mentioned key is pressed system will enter in one of the above mentioned modes Operation in each mode is explained in section 4 Step 12 Press ESC on keyboard to exit from the selected mode Step 13 Once exited from the selected mode system will resume from step 9 Version1 0 STMicroelectronics SI STM32 Based LED Matrix Display Demo User Manual 3 2 Two Control Units and One Display Unit Configuration In this configuration there are two control units and a single display unit One Control unit should be master and other one should be slave By default system comes with one master and one display panel Below are the steps to operate the system in this configuration Step 1 Configure one control unit as Master and other control unit as Slave as explained in section 2 1 2 Step 2 Configure the address of Slave board using the onboard DIP switches as explained in section 2 1 1 Step 3 Connect PS2 keyboard to the master control unit Step 4 Connect display panel to Slave control unit using 20 pin flat ribbon cable Insert the cable in 10 x 2 header Ext Con present on slave at one side and in header J1 INPUT on display panel at other side If needed display panels can be cascaded in series to make a longer display To cascade display panels connect 20 pin flat ribbon cable from jumper J3 OUTPUT of first panel to jumper J1 INPUT of second panel F
25. t will start the demo showing Led Matrix Demo and slave control unit will start showing its own address Address is configured using on board switches Step 9 Display at master will start showing 4 options 1 Press F1 For PC UART Comm 2 Press F2 For GPS Data Display 3 Press F3 For Typing Data 4 Press F6 For Demo Mode Step 10 Press F1 or F2 or F3 or F6 on keyboard to select one of the above mentioned modes Step 11 Based on which of the above mentioned key is pressed system will enter in one of the above mentioned modes Operation in each mode is explained in section 4 Step 12 Master board LCD will ask for address of slave control unit in order to configure the display unit If the address entered at master unit matches with the slave unit then the selected slave unit can be configured for display else Address Mismatch is displayed over LCD and new address entry is requested Step 13 When address is matched then Master control unit will send commands to selected slave control unit Slave control unit will process these commands and configure the display panel for displaying entered data Rest other slave units will continue to display old data Step 14 Press ESC to exit from present mode After this system will resume from Step new address entered for slave selection matches with the slave address then slave display will be interrupted else display will continue with old data Figur
26. tched LCD will show message Enter No Of LED Boards Enter number of LED panels connected in cascade to the selected control unit 7 Next message will be Enter Mode Entr between 1 9 This is for entering one of 9 display modes Modes are explained in step 12 of section 4 1 8 As soon as mode is entered selected mode will be seen on LCD and then will ask for Enter Speed Entr between 1 9 This speed is for seeing the display on LED Matrix Speed 1 is fastest and 9 is slowest If speed entered is other than 1 9 then default speed of 2 will be selected 9 Next message will be Enter String Pres ESC to exit 10 Enter the data which is to be seen on LED Matrix display If user does not want to enter data and wants to exit from this mode then ESC key should be pressed STMicroelectronics Rev 1 0 17 26 STM32 Based LED Matrix Display Demo User Manual 11 As soon as data is entered it will seen on LED Matrix and then LCD will show Pres ESC to exit Enter to Proceed Thus to continue with the Typing mode hit ENTER key on keyboard system will switch to step 5 else hit ESC to exit from this mode and return to main menu Note To check is Caps lock is ON or OFF see to the typed character on LCD If Caps lock is ON then the alphabets will be seen in CAPITAL CASE on LCD else it will be in SMALL CASE 4 4 Demo Mode 18 26 Demo mode will be executed with master control unit and display pa
27. tronics Inc 3 52K 0 1 R digikey ND 1 Panasonic ERJ P22ATR R4 R5 22 SMD0805 ECG 6GEYJ220V digikey ND 2 Panasonic ERJ P1 0MAT R6 R16 1M SMD0805 ECG 6GEYJ105V digikey R ND 2 Panasonic ERJ P100ATR R7 100 SMD0805 ECG 6GEYJ101V digikey ND 1 R8 R41 Panasonic ERJ PO OATR R46 0 SMD0805 ECG 6GEYOROOV digikey ND 3 R10 R70 Panasonic ERJ P4 7KAT R71 4k7 SMD0805 ECG 6GEYJ472V digikey R ND 3 R11 R12 R13 R14 R17 R20 R27 R30 R38 R39 R40 R48 R49 R50 R51 R53 R60 R61 R62 R68 Panasonic ERJ P10KACT R69 10k SMD0805 ECG 6GEYJ103V digikey ND 21 858 10k Resistor bank 9 BI L091C103 R24 PIN SIP9 Technologies L091C103LF Mouser LF 1 Panasonic ERJ P470ATR R15 R57 470 SMD0805 ECG 6GEYJ471V digikey ND 2 Panasonic ERJ P1 0KAT R22 R31 1k SMD0805 ECG 6GEYJ102V digikey R ND 2 R25 R29 Panasonic ERJ P499CTR R64 R65 499 SMD0805 ECG GENF4990V digikey ND 4 Panasonic ERJ P120ATR R26 R63 120 SMD0805 ECG 6GEYJ121V digikey ND 2 Panasonic ERJ P1 5KAT R28 1 5k SMD0805 ECG 6GEYJ152V digikey R ND 1 Panasonic ERJ P510ATR R32 R36 510 SMD0805 ECG 6GEYJ511V digikey ND 2 24 26 Version1 0 STMicroelectronics SI STM32 Based LED Matrix Display Demo User Manual Panasonic ERJ P2 2KAT R33 2 2k SMD0805 ECG 6GEYJ222V digikey R ND 1 Panasonic ERJ P1 2KAT R34 R35 1 2k SMD0805 ECG 6GEYJ122V digikey R ND 2 Panaso
28. ween 0 and 255 If switch is slided towards the side where numbers are written then logic 1 is assigned to the port and if the switch is slided towards the side where ON is written then logic 0 is assigned to the board Whenever the board is powered up and is connected as slave unit then its address will be displayed on the LCD mounted on board Figure 5 shows on board switches Note Address 255 is hardcoded to master unit and no slave unit is allowed to have this address Thus one should never slide all the 8 switches to the side where numbers are written opposite to side where ON is written Version1 0 STMicroelectronics SL STM32 Based LED Matrix Display Demo User Manual SL Figure 5 Slave Unit Address Configuration Switches a BUT ee JU 228 f3 ae mi Nr t co switches are at High level 18 485 6 4B3 rw a pi STMicroelectronics Rev 1 0 7 26 STM32 Based LED Matrix Display Demo User Manual 2 1 2 Selecting the Control Unit as Master or Slave Any control unit can act as master or slave On board keypad is used to configure the control unit as Master or as Slave Below are the steps for configuring the control unit Connect 5 volt power supply to control unit as explained in section 1 3 LCD will display Press to enter Configuration Mod for 4 seconds Press 4 on keypad present on board LCD will show Master Sel E
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