This is a port of Henning Kralsen's UTFT library for Arduino/chipKIT to mbed, refactored to make full use of C inheritance and access control, in order to reduce work when implementing new drivers and at the same time make the code more readable and easier to maintain. As of now supported are SSD1289 (16-bit interface), HX8340-B (serial interface) and ST7735 (serial interface). Drivers for other controllers will be added as time and resources to acquire the displays to test the code permit.
Fork of TFTLCD by
Diff: lcd_base.cpp
- Revision:
- 4:3ac4239f6c9c
- Parent:
- 3:64a5b67d5b51
- Child:
- 7:5c418fc1879f
diff -r 64a5b67d5b51 -r 3ac4239f6c9c lcd_base.cpp --- a/lcd_base.cpp Sun Dec 02 01:44:23 2012 +0000 +++ b/lcd_base.cpp Sun Dec 02 05:44:52 2012 +0000 @@ -22,9 +22,13 @@ #include "lcd_base.h" #include "helpers.h" -LCD::LCD( unsigned short width, unsigned short height ,PinName CS, PinName RS ) - : _disp_width( width ), _disp_height( height ), _lcd_pin_cs( CS ), _lcd_pin_rs( RS ) -{} +LCD::LCD( unsigned short width, unsigned short height ,PinName CS, PinName RS, PinName RESET ) + : _disp_width( width ), _disp_height( height ), _lcd_pin_cs( CS ), _lcd_pin_rs( RS ), _lcd_pin_reset( RESET ) +{ + SetForeground(); + SetBackground(); + _font.font = 0; +} inline void LCD::SetForeground( unsigned short color ) @@ -64,12 +68,11 @@ void LCD::FillScreen( int color ) { unsigned short rgb = color == -1 ? _background : color == -2 ? _foreground : ( unsigned short ) color; - _lcd_pin_cs = LOW; + Activate(); ClearXY(); - _lcd_pin_rs = HIGH; for ( int i = 0; i < ( ( _disp_width ) * ( _disp_height ) ); i++ ) WriteData( rgb ); - _lcd_pin_cs = HIGH; + Deactivate(); } inline @@ -80,12 +83,11 @@ void LCD::DrawPixel( unsigned short x, unsigned short y, int color ) { - _lcd_pin_cs = LOW; + Activate(); SetXY( x, y, x, y ); WriteData( color == -1 ? _background : color == -2 ? _foreground : color ); - _lcd_pin_cs = HIGH; - ClearXY(); + Deactivate(); } void LCD::DrawLine( unsigned short x1, unsigned short y1, unsigned short x2, unsigned short y2, int color ) @@ -116,60 +118,58 @@ swap( ushort, y1, y2 ) DrawVLine( x1, y1, y2 - y1, color ); } - else if ( abs( x2 - x1 ) > abs( y2 - y1 ) ) + else { unsigned short usedColor = color == -1 ? _background : color == -2 ? _foreground : ( unsigned short ) color; - _lcd_pin_cs = LOW; - delta = ( double( y2 - y1 ) / double( x2 - x1 ) ); - ty = double( y1 ); - if ( x1 > x2 ) + Activate(); + if ( abs( x2 - x1 ) > abs( y2 - y1 ) ) { - for ( int i = x1; i >= x2; i-- ) + delta = ( double( y2 - y1 ) / double( x2 - x1 ) ); + ty = double( y1 ); + if ( x1 > x2 ) { - SetXY( i, int( ty + 0.5 ), i, int( ty + 0.5 ) ); - WriteData( usedColor ); - ty = ty - delta; + for ( int i = x1; i >= x2; i-- ) + { + SetXY( i, int( ty + 0.5 ), i, int( ty + 0.5 ) ); + WriteData( usedColor ); + ty = ty - delta; + } + } + else + { + for ( int i = x1; i <= x2; i++ ) + { + SetXY( i, int( ty + 0.5 ), i, int( ty + 0.5 ) ); + WriteData( usedColor ); + ty = ty + delta; + } } } else { - for ( int i = x1; i <= x2; i++ ) + delta = ( float( x2 - x1 ) / float( y2 - y1 ) ); + tx = float( x1 ); + if ( y1 > y2 ) { - SetXY( i, int( ty + 0.5 ), i, int( ty + 0.5 ) ); - WriteData( usedColor ); - ty = ty + delta; + for ( int i = y2 + 1; i > y1; i-- ) + { + SetXY( int( tx + 0.5 ), i, int( tx + 0.5 ), i ); + WriteData( usedColor ); + tx = tx + delta; + } + } + else + { + for ( int i = y1; i < y2 + 1; i++ ) + { + SetXY( int( tx + 0.5 ), i, int( tx + 0.5 ), i ); + WriteData( usedColor ); + tx = tx + delta; + } } } - _lcd_pin_cs = HIGH; + Deactivate(); } - else - { - unsigned short usedColor = color == -1 ? _background : color == -2 ? _foreground : ( unsigned short ) color; - _lcd_pin_cs = LOW; - delta = ( float( x2 - x1 ) / float( y2 - y1 ) ); - tx = float( x1 ); - if ( y1 > y2 ) - { - for ( int i = y2 + 1; i > y1; i-- ) - { - SetXY( int( tx + 0.5 ), i, int( tx + 0.5 ), i ); - WriteData( usedColor ); - tx = tx + delta; - } - } - else - { - for ( int i = y1; i < y2 + 1; i++ ) - { - SetXY( int( tx + 0.5 ), i, int( tx + 0.5 ), i ); - WriteData( usedColor ); - tx = tx + delta; - } - } - _lcd_pin_cs = HIGH; - } - - ClearXY(); } void LCD::DrawRect( unsigned short x1, unsigned short y1, unsigned short x2, unsigned short y2, int color ) @@ -263,7 +263,7 @@ int y1 = radius; unsigned short usedColor = color == -1 ? _background : color == -2 ? _foreground : ( unsigned short ) color; - _lcd_pin_cs = LOW; + Activate(); SetXY( x, y + radius, x, y + radius ); WriteData( usedColor ); SetXY( x, y - radius, x, y - radius ); @@ -301,14 +301,13 @@ SetXY( x - y1, y - x1, x - y1, y - x1 ); WriteData( usedColor ); } - _lcd_pin_cs = HIGH; - ClearXY(); + Deactivate(); } void LCD::FillCircle( unsigned short x, unsigned short y, unsigned short radius, int color ) { unsigned short usedColor = color == -1 ? _background : color == -2 ? _foreground : ( unsigned short ) color; - _lcd_pin_cs = LOW; + Activate(); for ( int y1 = -radius; y1 <= radius; y1++ ) for ( int x1 = -radius; x1 <= radius; x1++ ) if ( x1 * x1 + y1 * y1 <= radius * radius ) @@ -316,8 +315,7 @@ SetXY( x + x1, y + y1, x + x1, y + y1 ); WriteData( usedColor ); } - _lcd_pin_cs = HIGH; - ClearXY(); + Deactivate(); } void LCD::Print( const char *str, unsigned short x, unsigned short y, int fgColor, int bgColor, unsigned short deg ) @@ -352,33 +350,29 @@ { int tx, ty, tc, tsx, tsy; + Activate(); if ( scale == 1 ) { if ( _orientation == PORTRAIT ) { - _lcd_pin_cs = LOW; SetXY( x, y, x + sx - 1, y + sy - 1 ); for ( tc = 0; tc < ( sx * sy ); tc++ ) WriteData( data[ tc ] ); - _lcd_pin_cs = HIGH; } else { - _lcd_pin_cs = LOW; for ( ty = 0; ty < sy; ty++ ) { SetXY( x, y + ty, x + sx - 1, y + ty ); for ( tx = sx; tx >= 0; tx-- ) WriteData( data[ ( ty * sx ) + tx ] ); } - _lcd_pin_cs = HIGH; } } else { if ( _orientation == PORTRAIT ) { - _lcd_pin_cs = LOW; for ( ty = 0; ty < sy; ty++ ) { SetXY( x, y + ( ty * scale ), x + ( ( sx * scale ) - 1 ), y + ( ty * scale ) + scale ); @@ -387,11 +381,9 @@ for ( tsx = 0; tsx < scale; tsx++ ) WriteData( data[ ( ty * sx ) + tx ] ); } - _lcd_pin_cs = HIGH; } else { - _lcd_pin_cs = LOW; for ( ty = 0; ty < sy; ty++ ) { for ( tsy = 0; tsy < scale; tsy++ ) @@ -402,10 +394,9 @@ WriteData( data[ ( ty * sx ) + tx ] ); } } - _lcd_pin_cs = HIGH; } } - ClearXY(); + Deactivate(); } void LCD::DrawBitmap( unsigned short x, unsigned short y, unsigned short sx, unsigned short sy, bitmap_t data, unsigned short deg, unsigned short rox, unsigned short roy ) @@ -418,7 +409,7 @@ DrawBitmap( x, y, sx, sy, data ); else { - _lcd_pin_cs = LOW; + Activate(); for ( ty = 0; ty < sy; ty++ ) for ( tx = 0; tx < sx; tx++ ) { @@ -428,30 +419,37 @@ SetXY( newx, newy, newx, newy ); WriteData( data[ ( ty * sx ) + tx ] ); } - _lcd_pin_cs = HIGH; + Deactivate(); } - ClearXY(); +} + +inline +void LCD::Activate( void ) +{ + _lcd_pin_cs = LOW; +} + +inline +void LCD::Deactivate( void ) +{ + _lcd_pin_cs = HIGH; } /* -void LCD::writeCmd( unsigned short cmd ) +void LCD::WriteCmd( unsigned short cmd ) { _lcd_pin_rs = LOW; - _lcd_pin_cs = LOW; _lcd_port->write( cmd ); pulseLow( _lcd_pin_wr ); - _lcd_pin_cs = HIGH; } */ /* -void LCD::writeData( unsigned short data ) +void LCD::WriteData( unsigned short data ) { _lcd_pin_rs = HIGH; - _lcd_pin_cs = LOW; _lcd_port->write( data ); pulseLow( _lcd_pin_wr ); - _lcd_pin_cs = HIGH; } */ @@ -463,7 +461,7 @@ } /* -void LCD::setXY( uint16_t x1, uint16_t y1, uint16_t x2, uint16_t y2 ) +void LCD::SetXY( uint16_t x1, uint16_t y1, uint16_t x2, uint16_t y2 ) { if ( _orientation == LANDSCAPE ) { @@ -474,12 +472,12 @@ swap( uint16_t, y1, y2 ) } - writeCmdData( 0x44, ( x2 << 8 ) + x1 ); - writeCmdData( 0x45, y1 ); - writeCmdData( 0x46, y2 ); - writeCmdData( 0x4e, x1 ); - writeCmdData( 0x4f, y1 ); - writeCmd( 0x22 ); + WriteCmdData( 0x44, ( x2 << 8 ) + x1 ); + WriteCmdData( 0x45, y1 ); + WriteCmdData( 0x46, y2 ); + WriteCmdData( 0x4e, x1 ); + WriteCmdData( 0x4f, y1 ); + WriteCmd( 0x22 ); } */ @@ -495,24 +493,22 @@ { unsigned short usedColor = color == -1 ? _background : color == -2 ? _foreground : ( unsigned short ) color; - _lcd_pin_cs = LOW; + Activate(); SetXY( x, y, x + len, y ); for ( int i = 0; i < len + 1; i++ ) WriteData( usedColor ); - _lcd_pin_cs = HIGH; - ClearXY(); + Deactivate(); } void LCD::DrawVLine( unsigned short x, unsigned short y, unsigned short len, int color ) { unsigned short usedColor = color == -1 ? _background : color == -2 ? _foreground : ( unsigned short ) color; - _lcd_pin_cs = LOW; + Activate(); SetXY( x, y, x, y + len ); for ( int i = 0; i < len; i++ ) WriteData( usedColor ); - _lcd_pin_cs = HIGH; - ClearXY(); + Deactivate(); } void LCD::PrintChar( char c, unsigned short x, unsigned short y, int fgColor, int bgColor ) @@ -523,7 +519,7 @@ unsigned short usedColorFG = fgColor == -1 ? _background : fgColor == -2 ? _foreground : ( unsigned short ) fgColor; unsigned short usedColorBG = bgColor == -1 ? _background : bgColor == -2 ? _foreground : ( unsigned short ) bgColor; - _lcd_pin_cs = LOW; + Activate(); if ( _orientation == PORTRAIT ) { @@ -564,8 +560,7 @@ temp += ( _font.width / 8 ); } } - _lcd_pin_cs = HIGH; - ClearXY(); + Deactivate(); } void LCD::RotateChar( char c, unsigned short x, unsigned short y, int pos, int fgColor, int bgColor, unsigned short deg ) @@ -579,7 +574,7 @@ unsigned short usedColorFG = fgColor == -1 ? _background : fgColor == -2 ? _foreground : ( unsigned short ) fgColor; unsigned short usedColorBG = bgColor == -1 ? _background : bgColor == -2 ? _foreground : ( unsigned short ) bgColor; - _lcd_pin_cs = LOW; + Activate(); temp = ( ( c - _font.offset ) * ( ( _font.width / 8 ) * _font.height ) ) + 4; for ( j = 0; j < _font.height; j++ ) @@ -602,6 +597,5 @@ } temp += ( _font.width / 8 ); } - _lcd_pin_cs = HIGH; - ClearXY(); + Deactivate(); }