display.cpp

00001 //Display control functions --
00002  
00003 #include "mbed.h"
00004 #include "TFT_4DGL.h"
00005 #include "display.h"
00006 #include <string> 
00007 using namespace std;
00008  
00009 DigitalOut VGA_SOURCE( p7 ); //control line for video switch between INT and EXT video
00010 DigitalOut VGA_SELECT( p8 ); //control line to select/deselect video switch
00011  
00012 /*
00013 =====================================================
00014 SGC (Serial Graphics Controller) PLATFORM OUTPUT FILE
00015 =====================================================
00016  
00017 *******************************************************
00018 * Must set 'New image format' for usage on Picaso SGC *
00019 * Data:                                               *
00020 *  0x59, 0x06, 0x00                                   *
00021 * 4DSL command:                                       *
00022 *  Control(6,0)                                       *
00023 *******************************************************
00024  
00025 ---------------------------------------------------------------------------------------
00026 File "logo_flyengravity.jpg" (logo_flyengravity.jpg)
00027 Sector Address 0x000000
00028 X = 0 Y = 135 Width = 640 Height = 215 Bits = 16
00029  
00030 Display Image from Memory Card (Serial Command):
00031 Syntax:
00032 @, I, x, y, SectorAdd(hi), SectorAdd(mid), SectorAdd(lo)
00033 Picaso Data:
00034 0x40, 0x49, 0x00, 0x00, 0x00, 0x87, 0x00, 0x00, 0x00
00035 4DSL command:
00036 NewUSDImage(0, 135, 0x000000)
00037  
00038 ---------------------------------------------------------------------------------------
00039 File "Testscreen.png" (Testscreen.png)
00040 Sector Address 0x00021A
00041 X = 0 Y = 0 Width = 640 Height = 480 Bits = 16
00042  
00043 Display Image from Memory Card (Serial Command):
00044 Syntax:
00045 @, I, x, y, SectorAdd(hi), SectorAdd(mid), SectorAdd(lo)
00046 Picaso Data:
00047 0x40, 0x49, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0x1A
00048 4DSL command:
00049 NewUSDImage(0, 0, 0x00021A)
00050  
00051 */
00052  
00053 /*Display Commands
00054  
00055 $PCDUCLS Erase to active background colour (default black) or white
00056 ===================================================================
00057 Syntax: $PCDUCLS, <mode>*<checksum>CRLF
00058  <mode>=0 : Clear screen to current background colour (default=black)
00059  <mode>=1 : Clear screen to white
00060  
00061 $PCDUSBC Set Background Color
00062 ====================================================================
00063 Syntax: $PCDUSBC,<Rcolour>,<Gcolour>,<Bcolour>*<checksum>CRLF
00064  < Rcolour > : RED (000‐255)
00065  < Gcolour > : GREEN (000‐255)
00066  < Bcolour > : BLUE (000‐255)
00067  Set background colour to RGB as defined in the three data fields.
00068  
00069 $PCDUWTX WTX=WRITE TEXT Write text on any X,Y position on the screen.
00070 =====================================================================
00071 Syntax: $PCDUWTX,<Fsize>,<Fstyle>,<Rcolour>,<Gcolour>,<Bcolour>,<Text><Col>,<Row>*<checksum>CRLF
00072  <Fsize> : Font size (F0..F9). Currently F0 and F1 are implemented.
00073  <Fstyle> : Font style (S=Standard, B=Bold, I=Italic, U=Underline, N=Negative)
00074  < Rcolour > : RED (000‐255)
00075  < Gcolour > : GREEN (000‐255)
00076  < Bcolour > : BLUE (000‐255)
00077  <Text> : Any printable ASCII character except the * character as this is used as the text field delimiter. 
00078   Maximum length is 24 characters, minimum length is 1 character for font F0.
00079   Maximum length is 48 characters, minumum length is 1 character for font F1.
00080  <Col> : Horizontal position of the first character (1..24)
00081  <Row> : Vertical position of the line (1..14)
00082  
00083 $PCDUETX ETX=ERASE TEXT
00084 ============================================================= 
00085 Syntax: $PCDUETX, <Col>,<Row>,<n>*<checksum>CRLF
00086  <Col> : Horizontal position of the first character (1..24 for font F0 or 1..48 for font F1)
00087  <Row> : Vertical position of the line (1‐14)
00088  <n> : number of characters to be erased (1..24 for font F0 or 1..48 for font F1)
00089  
00090 $PCDUKTX                Write text attached to a Select Key
00091 ===========================================================
00092 Syntax: $PCDUKTX,<KeyID>,<Texttype>,<Fsize>,<Fstyle>,<Rcolour>,<Gcolour>,<Bcolour>,<Text>*< checksum>CRLF
00093  <KeyID> : Numbering is 00 – 49 for left keys and 50 – 99 for right keys. Top keys are 00 and 50.
00094  <Texttype> : M or S, meaning Main text or Subtext.
00095  <Fsize> : Font size (F0..F9). Currently F0 and F1 are implemented.
00096  <Fstyle> : Font style (S=Standard, B=Bold, I=Italic, U=Underline, N=Negative)
00097  < Rcolour > : RED (000‐255)
00098  < Gcolour > : GREEN (000‐255)
00099  < Bcolour > : BLUE (000‐255)
00100  <Text> : Any printable ASCII character within the character set.except the * character as this is used as the text field delimiter. 
00101  Maximum length is 24 characters, minimum length is 1 character for font F0
00102  Maximum length is 48 characters, minumum length is 1 character for font F1.
00103 */
00104  
00105 //Control lines for VGA driver board
00106 TFT_4DGL display(p13,p14,p15); // serial tx, serial rx, reset pin
00107  
00108 //Character & String functions
00109  
00110 char* str2char( string cString ) //convert a string to a character array
00111     {
00112     int nStrLen=cString.size();
00113     std::string cInput( cString );
00114     char* cText = new char[nStrLen+1];
00115     strncpy(cText, cInput.c_str(), nStrLen);
00116     cText[nStrLen] = '\0';
00117     return cText;
00118     }
00119     
00120 int centertext( string cString, int nChars, int nCharWidth )
00121     //calculates the startposition on the screen to center the text
00122     //needs the actual string (cString), screenwidth in characters (nChars) and the character width (nCharWidth)
00123     {
00124     int nStart;
00125     nStart = nCharWidth*( nChars/2-( cString.size()/2 ));
00126     return nStart;
00127     }
00128     
00129 int righttext( string cString, int nChars, int nCharWidth )
00130     //calculates the startposition on the screen to right-align the text
00131     //needs the actual string (cString), screenwidth in characters (nChars) and the character width (nCharWidth)
00132     {
00133     int nStart;
00134     nStart = nCharWidth*( nChars - cString.size());
00135     return nStart;
00136     }
00137  
00138 int nFontSize( int nfont_number )
00139 {
00140     int nFont = 0;
00141     switch ( nfont_number )
00142     {
00143         case 0:
00144         {
00145             nFont = FONT_12X34;
00146             break;
00147         }
00148         case 1:
00149         {
00150             nFont = FONT_24X34;
00151             break;
00152         }
00153     }
00154     return ( nFont );
00155 }    
00156  
00157 int nFontWidth (int nfont_number )
00158 {
00159     int nFont = 12;
00160     switch ( nfont_number )
00161     {
00162         case 0:
00163         {
00164             nFont = 12;
00165             break;
00166         }
00167         case 1:
00168         {
00169             nFont = 24;
00170             break;
00171         }
00172     }
00173     return ( nFont );
00174 }    
00175  
00176 unsigned int cRGB( char cRED, char cGREEN, char cBLUE )
00177 {
00178     //assemble separate colors into 1 integer value as 0xRRGGBB
00179     //Display driver requires this format
00180     unsigned int RGB = cBLUE + 256*cGREEN + 65536*cRED;
00181     return ( RGB );
00182 }    
00183  
00184 int LeftOrRight( int nTextLine, string cString, int nChars, int nCharWidth )
00185 {
00186     //decide to print data left aligned or right aligned
00187     //00 - 49 is left  side of screen
00188     //50 - 99 is right side of screen
00189     int nHorPos = 0; 
00190     // nChars is number of characters on this line (24 or 48)
00191     // nCharWidth is the character width in pixels
00192     
00193     if ( nTextLine < 50 )
00194     // Left side adjust
00195     {
00196         nHorPos = 0;
00197     }
00198     else
00199     // Right side adjust
00200     {
00201         nHorPos = righttext( cString, nChars, nCharWidth );
00202     }
00203     return ( nHorPos );
00204 }
00205  
00206 int nLine2Pixel( int nLine )
00207 {
00208     //calculate vertical pixelposition from linenumber
00209     int nPixel = 0;
00210     switch ( nLine )
00211     {
00212         case 1:
00213         {
00214             nPixel = LINE1;
00215             break;
00216         }
00217         case 2:
00218         {
00219             nPixel = LINE2;
00220             break;
00221         }
00222         
00223         case 3:
00224         {
00225             nPixel = LINE3;
00226             break;
00227         }
00228         
00229         case 4:
00230         {
00231             nPixel = LINE4;
00232             break;
00233         }
00234         
00235         case 5:
00236         {
00237             nPixel = LINE5;
00238             break;
00239         }
00240         
00241         case 6:
00242         {
00243             nPixel = LINE6;
00244             break;
00245         }
00246         
00247         case 7:
00248         {
00249             nPixel = LINE7;
00250             break;
00251         }
00252         
00253         case 8:
00254         {
00255             nPixel = LINE8;
00256             break;
00257         }
00258         
00259         case 9:
00260         {
00261             nPixel = LINE9;
00262             break;
00263         }
00264         
00265         case 10:
00266         {
00267             nPixel = LINE10;
00268             break;
00269         }
00270         
00271         case 11:
00272         {
00273             nPixel = LINE11;
00274             break;
00275         }
00276         
00277         case 12:
00278         {
00279             nPixel = LINE12;
00280             break;
00281         }
00282         
00283         case 13:
00284         {
00285             nPixel = LINE13;
00286             break;
00287         }
00288         
00289         case 14:
00290         {
00291             nPixel = LINE14;
00292             break;
00293         }
00294         
00295     }
00296     return ( nPixel ) ;
00297 }
00298  
00299 void VGA_SIGNAL( int Source, int On_Off)
00300 {
00301     VGA_SOURCE = Source;
00302     VGA_SELECT = On_Off;
00303 }
00304  
00305 void CDU_InitDisplay()
00306 {
00307     display.baudrate( 9600 );       //init uVGAIII card
00308     VGA_SIGNAL( VGA_INT, VGA_ON );  //select INTERNTAL video and set VGA switch ON
00309 }
00310  
00311 void CDU_StartScreen()
00312  {
00313     string cTitle1="ENGRAVITY";
00314     string cTitle2="CONTROL & DISPLAY UNIT";
00315     display.cls();   
00316     
00317     display.graphic_string( str2char( cTitle1 ), centertext( cTitle1, 24, LARGECHAR), LINE6, FONT_24X34, WHITE, 1, 1 );
00318     wait_ms(1000);
00319     display.graphic_string( str2char( cTitle2 ), centertext( cTitle2, 24, LARGECHAR), LINE8, FONT_24X34, RED, 1, 1 );
00320     wait_ms(1000);
00321     display.graphic_string( str2char( cTitle2 ), centertext( cTitle2, 24, LARGECHAR), LINE8, FONT_24X34, GREEN, 1, 1 );
00322     wait_ms(1000);
00323     display.graphic_string( str2char( cTitle2) , centertext( cTitle2, 24, LARGECHAR), LINE8, FONT_24X34, BLUE, 1, 1 );
00324     wait_ms(1000);
00325     display.graphic_string( str2char( cTitle2) , centertext( cTitle2, 24, LARGECHAR), LINE8, FONT_24X34, WHITE, 1, 1 );
00326     wait_ms(1000);
00327  }
00328  
00329 void CDU_ScreenAlign()
00330 //Draw a wireframe for aligning the screen on display with keys
00331 {
00332     display.cls();
00333     
00334     display.pen_size(WIREFRAME);
00335     display.rectangle(XMIN,YMIN,XMAX,YMAX, WHITE);
00336     display.line(XMIN,LINE2,XMAX,LINE2, WHITE);
00337     display.line(XMIN,LINE3,XMAX,LINE3, WHITE);
00338     display.line(XMIN,LINE4,XMAX,LINE4, WHITE);
00339     display.line(XMIN,LINE5,XMAX,LINE5, WHITE);
00340     display.line(XMIN,LINE6,XMAX,LINE6, WHITE);
00341     display.line(XMIN,LINE7,XMAX,LINE7, WHITE);
00342     display.line(XMIN,LINE8,XMAX,LINE8, WHITE);
00343     display.line(XMIN,LINE9,XMAX,LINE9, WHITE);
00344     display.line(XMIN,LINE10,XMAX,LINE10, WHITE);
00345     display.line(XMIN,LINE11,XMAX,LINE11, WHITE);
00346     display.line(XMIN,LINE12,XMAX,LINE12, WHITE);
00347     display.line(XMIN,LINE13,XMAX,LINE13, WHITE);
00348     display.line(XMIN,LINE14,XMAX,LINE14, WHITE);
00349  
00350 }
00351  
00352 void CDU_TestScreen()
00353 {
00354     display.display_control(IMAGE_FORMAT, NEW); //set correct image for reading from SD
00355     display.cls();
00356     display.showpicture(0x00, 0x00, 0x00, 0x14, 0x00, 0x01, 0xB5);    // Testscreen
00357 }
00358  
00359 void CDU_LogoScreen()
00360 {
00361     display.display_control(IMAGE_FORMAT, NEW); //set correct image for reading from SD    
00362     display.cls();
00363     display.showpicture(0x00, 0x00, 0x00, 0x87, 0x00, 0x00, 0x00);    // Engravity logo
00364 }
00365 
00366 void CDU_Page()
00367 {
00368     display.cls();
00369     display.graphic_string( "PERF INIT" , 8*24,  LINE1, FONT_24X34, WHITE, 1, 1 );
00370    
00371     display.graphic_string( "GW/CRZ CG" , 0,  LINE2, FONT_12X34, WHITE, 1, 1 );
00372     display.graphic_string( "CRZ ALT"   , 41*12, LINE2, FONT_12X34, WHITE, 1, 1 );
00373     
00374     display.graphic_string( "___._ / 26.2%" , 0,  LINE3, FONT_24X34, WHITE, 1, 1 );
00375     display.graphic_string( "_____"     , 19*24, LINE3, FONT_24X34, WHITE, 1, 1 );
00376  
00377     display.graphic_string( "FUEL" , 0,  LINE4, FONT_12X34, WHITE, 1, 1 );
00378     display.graphic_string( "CRZ/WIND"   , 40*12, LINE4, FONT_12X34, WHITE, 1, 1 );
00379         
00380     display.graphic_string( "0.0" , 0,  LINE5, FONT_24X34, WHITE, 1, 1 );
00381     display.graphic_string( "000$ /---" , 15*24,  LINE5, FONT_24X34, WHITE, 1, 1 );
00382    
00383     display.graphic_string( "ZFW" , 0,  LINE6, FONT_12X34, WHITE, 1, 1 );
00384     display.graphic_string( "___._ " , 0,  LINE7, FONT_24X34, WHITE, 1, 1 );
00385    
00386     display.graphic_string( "RESERVES" , 0,  LINE8, FONT_12X34, WHITE, 1, 1 );
00387     display.graphic_string( "__._ " , 0,  LINE9, FONT_24X34, WHITE, 1, 1 );
00388         
00389     display.graphic_string( "COST INDEX" , 0,  LINE10, FONT_12X34, WHITE, 1, 1 );
00390     display.graphic_string( "TRANS ALT"   , 39*12, LINE10, FONT_12X34, WHITE, 1, 1 ); 
00391     
00392     display.graphic_string( "___" , 0,  LINE11, FONT_24X34, WHITE, 1, 1 );
00393     display.graphic_string( "_____"     , 19*24, LINE11, FONT_24X34, WHITE, 1, 1 );
00394    
00395     display.graphic_string( "------------------------------------------------"   , 0, LINE12, FONT_12X34, WHITE, 1, 1 ); 
00396  
00397     display.graphic_string( "<INDEX" , 0,  LINE13, FONT_24X34, WHITE, 1, 1 );
00398     display.graphic_string( "N1 LIMIT>"     , 15*24, LINE13, FONT_24X34, WHITE, 1, 1 );
00399    
00400     display.graphic_string( "SCRATCHPAD DATA LINE", centertext("SCRATCHPAD DATA LINE", 24, LARGECHAR) , LINE14, FONT_24X34, RED, 1, 1 );
00401     
00402 }
00403 
00404 void  CDU_displayclear(){
00405     display.cls();
00406 }
00407