Displaying Videos and Images on 4Dsystems uOLED Serially
I have to start by saying that those guys at 4Dsystems really know what they are doing. they have made it very easy to display video, images, and even animated gifs on their Displays.
- For my setup ill be using the µOLED-128-G1(SGC)
Note: the (SGC) indicates that this is a serial display and has the 4Dsystems Pmmc firmware loaded.
- My Controller board consists of a PIC16F877A , 5 Button dedicated RF interface (Key Fob), including Ports B,C,E brought out to the board edge.
- Also in this setup is the Parallax RFID reader (serial). Radio shack has these on sale for $5. i have a few
Ok. Lets start with Graphics Composer. Once you download your free copy of Graphics Composer Software, you must read the Graphics Composer manual. Unfortunately there are no links to the manual it is zipped with the software. It fully details how to get images onto your Micro SD card (uSD). There are 2 ways to get your images/videos to your uSD card. plugged directly into you computer as a Drive (recommended). or serially through the Display (which is very very slow).
I chose to plug it into my computer. Very important to NOT "Quick Format" as it needs to write to the boot sector. when you get all your files loaded via the Device>Load it will give you a TXT icon that you can click on. This TXT file (Below) is the most important part. it basically just hands you the code that you just need to copy and paste into Pic Basic (Pro).
You will need to change all the "0x" to "$" in order for PBP recognize the values. This example only shows one file. the text file would grow depending on how many items you put on your micro SD Card.Code:=========================== SERIAL-PLATFORM OUTPUT FILE =========================== --------------------------------------------------------------------------------------- File "Danger_Laser_Operating.gif" Sector Address 0x001000 Width = 128 Height = 128 Bits = 16 (Location and size may be adjusted depending on image size and Size Mode selected) Display Image from Memory Card (Serial Command): Syntax: @, I, x, y, width, height, colourMode, SectorAdd(hi), SectorAdd(mid), SectorAdd(lo) Data: 0x40, 0x49, 0x00, 0x12, 0x7F, 0x5B, 0x10, 0x00, 0x10, 0x00
below is an example of PBP Code with the Data given from the TXT File above. This Code basically Turns on a laser and tells the display to show the file "Danger_Laser_Operating.gif" at Sector Address 0x001000.
Here is the Video of the working code above.Code:DEFINE OSC 20 '***************************** RF COMMUNICATION ******************** ADCON1=7 CMCON=7 TRISA.0 = 1 ' These lines of code setup my RF Button Link TRISA.1 = 1 TRISA.2 = 1 TRISA.3 = 1 TRISA.4 = 1 Symbol Centerbtn = PORTA.0 symbol UP = PORTA.1 symbol Right = PORTA.2 Symbol Down = PORTA.3 symbol Left = PORTA.4 '************************************************* ***************** X var byte '************************************************* ***************** Symbol PWRLED = PORTB.2 symbol Laser = PORTD.7 'Port D Output is Driven by a ULN2803 8 Channel Transistor Array symbol LCD = PORTC.0 pause 1000 serout2 LCD,84,[$55] ' uOLED Initialize low laser high pwrled '************************************************* ***************** Reset: gosub cls Main: If centerbtn = 1 then activate_Laser 'press center button to go to activate Laser Loop goto Main '****************** LASER Routine ************************* Activate_Laser: if centerbtn = 1 then activate_laser ' Release button to activate serout2 LCD,84,[$40, $49, $00, $12, $7F, $5B, $10, $00, $10, $00] 'The code given to us from Graphics Composer high laser Laser_On: if centerbtn = 1 then Deactivate 'Press Center button to go to Deactivate loop goto laser_on Deactivate: if center = 1 then Deactivate 'Release to Deactivate Laser low laser gosub cls goto main '****************** CLEAR SCREEN ************************************ CLS: for x = 0 to 2 serout2 lcd,84,[$45] next return
You will notice that these videos also Implement my RFEFX Logo which is called in a separate routine
Here are some other code / video examples:
Code:define OSC 20 '********************** RFID Tag Data ***************************** Tag1 DATA "0415146D53" '0415146D53 ' 2 cards registered... Tag2 DATA "30700D48A5" '30700D48A5 LastTag CON 2 tagNum VAR byte ' from EEPROM table idx VAR Byte ' tag byte index char VAR Byte ' character from table buf var byte(10) X var byte '************************************************* ***************** Symbol PWRLED = PORTB.2 symbol LCD = PORTC.0 Symbol rfidin = PORTB.4 Symbol RFID = PORTB.5 pause 1000 serout2 LCD,84,[$55] ' uOLED Initialize high RFID high pwrled 'Software controlled Power LED (if this LED is not on at load check your code) '************************************************* ***************** Reset: gosub cls pause 100 logo: gosub Logo_png Main: low rfid serin2 rfidin,396,1000,Logo,[WAIT(10),str BUF\10] '2 Sec Timeout for Logo refresh high RFID '**************** RFID Check Tag Routine ***************** Check_List: FOR tagNum = 1 TO lasttag FOR idx = 0 TO 9 READ (((tagNum - 1) * 10) + idx), char 'The Tricky Order of Operation IF (char <> buf(idx)) THEN Bad_Char NEXT GOTO Tag_found Bad_Char: NEXT Bad_tag: serout2 LCD,84,[$40, $56, $00, $00, $80, $80, $10, $21, $00, $D4, $01, $54, $2E] PAUSE 8000 ' Delay the duration of the length of the File on the uSD card, in this case 8 sec. GOTO reset Tag_Found: serout2 LCD,84,[$40, $56, $00, $00, $80, $80, $10, $21, $00, $D4, $01, $1F, $2E] pause 8000 ' Delay the duration of the length of the File on the uSD card, in this case 8 sec. GOTO reset '************************* LOGO Routine ******************************** Logo_png: serout2 lcd,84,[$40, $49, $00, $30, $7F, $1F, $10, $01, $8A, $EE] return '************************** Clear the LCD **************************** CLS: for x = 0 to 2 serout2 lcd,84,[$45] next return
Code:DEFINE OSC 20 '***************************** RF COMMUNICATION ******************** ADCON1=7 CMCON=7 TRISA.0 = 1 ' These lines of code setup my RF Button Link TRISA.1 = 1 TRISA.2 = 1 TRISA.3 = 1 TRISA.4 = 1 Symbol Center = PORTA.0 symbol UP = PORTA.1 symbol Right = PORTA.2 Symbol Down = PORTA.3 symbol Left = PORTA.4 '************************************************* ****** Symbol PWRLED = PORTB.2 symbol LCD = PORTC.0 pause 1000 serout2 LCD,84,[$55] ' uOLED Initialize high pwrled 'Software controlled Power LED (if this LED is not on at load check your code) '************************************************************** Reset: GOSUB CLS PAUSE 100 Logo: GOSUB Logo_png Main: If Left = 1 then Minions ' Press Key Fob left button to start play loop goto Main '********************** Play Video Routine ******************** Minions: if left = 1 then Minions ' Release left button to Play Video serout2 lcd,84,[$40, $56, $00, $00, $80, $80, $10, $21, $04, $3C, $00, $10, $2E] 'Graphics Composer Data pause 38000 'Pause the duration of the loaded file (38 Sec) goto reset '************************* LOGO Routine ******************************** Logo_png: serout2 lcd,84,[$40, $49, $00, $30, $7F, $1F, $10, $01, $8A, $EE] 'Graphics Composer Data return '************************** Clear the LCD **************************** CLS: for x = 0 to 2 serout2 lcd,84,[$45] next return
Originally Posted by Ioannis
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