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
lcd_base.cpp
- Committer:
- ttodorov
- Date:
- 2012-12-04
- Revision:
- 7:5c418fc1879f
- Parent:
- 4:3ac4239f6c9c
- Child:
- 8:7a4791dbb065
File content as of revision 7:5c418fc1879f:
/* * Copyright (C)2010-2012 Henning Karlsen. All right reserved. * Copyright (C)2012 Todor Todorov. * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to: * * Free Software Foundation, Inc. * 51 Franklin St, 5th Floor, Boston, MA 02110-1301, USA * *********************************************************************/ #include "lcd_base.h" #include "helpers.h" 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 ) { _foreground = color; } inline void LCD::SetBackground( unsigned short color ) { _background = color; } void LCD::SetFont( const char *font ) { _font.font = font; _font.width = font[ 0 ]; _font.height = font[ 1 ]; _font.offset = font[ 2 ]; _font.numchars = font[ 3 ]; } inline unsigned short LCD::GetWidth( void ) { if ( _orientation == LANDSCAPE ) return _disp_height; return _disp_width; } inline unsigned short LCD::GetHeight( void ) { if ( _orientation == LANDSCAPE ) return _disp_width; return _disp_height; } void LCD::FillScreen( int color ) { unsigned short rgb = color == -1 ? _background : color == -2 ? _foreground : ( unsigned short ) color; Activate(); ClearXY(); for ( int i = 0; i < ( ( _disp_width ) * ( _disp_height ) ); i++ ) WriteData( rgb ); Deactivate(); } inline void LCD::ClearScreen( void ) { FillScreen( -1 ); } void LCD::DrawPixel( unsigned short x, unsigned short y, int color ) { Activate(); SetXY( x, y, x, y ); WriteData( color == -1 ? _background : color == -2 ? _foreground : color ); Deactivate(); } void LCD::DrawLine( unsigned short x1, unsigned short y1, unsigned short x2, unsigned short y2, int color ) { double delta, tx, ty; if ( ( ( x2 - x1 ) < 0 ) ) { swap( ushort, x1, x2 ) swap( ushort, y1, y2 ) } if ( ( ( y2 - y1 ) < 0 ) ) { swap( ushort, x1, x2 ) swap( ushort, y1, y2 ) } if ( y1 == y2 ) { if ( x1 > x2 ) swap( ushort, x1, x2 ) DrawHLine( x1, y1, x2 - x1, color ); } else if ( x1 == x2 ) { if ( y1 > y2 ) swap( ushort, y1, y2 ) DrawVLine( x1, y1, y2 - y1, color ); } else { unsigned short usedColor = color == -1 ? _background : color == -2 ? _foreground : ( unsigned short ) color; Activate(); if ( abs( x2 - x1 ) > abs( y2 - y1 ) ) { delta = ( double( y2 - y1 ) / double( x2 - x1 ) ); ty = double( y1 ); if ( x1 > x2 ) { 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 { 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; } } } Deactivate(); } } void LCD::DrawRect( unsigned short x1, unsigned short y1, unsigned short x2, unsigned short y2, int color ) { if ( x1 > x2 ) swap( ushort, x1, x2 ) if ( y1 > y2 ) swap( ushort, y1, y2 ) DrawHLine( x1, y1, x2 - x1, color ); DrawHLine( x1, y2, x2 - x1, color ); DrawVLine( x1, y1, y2 - y1, color ); DrawVLine( x2, y1, y2 - y1, color ); } void LCD::DrawRoundRect( unsigned short x1, unsigned short y1, unsigned short x2, unsigned short y2, int color ) { if ( x1 > x2 ) swap( ushort, x1, x2 ) if ( y1 > y2 ) swap( ushort, y1, y2 ) if ( ( x2 - x1 ) > 4 && ( y2 - y1 ) > 4 ) { DrawPixel( x1 + 1, y1 + 1, color ); DrawPixel( x2 - 1, y1 + 1, color ); DrawPixel( x1 + 1, y2 - 1, color ); DrawPixel( x2 - 1, y2 - 1, color ); DrawHLine( x1 + 2, y1, x2 - x1 - 4, color ); DrawHLine( x1 + 2, y2, x2 - x1 - 4, color ); DrawVLine( x1, y1 + 2, y2 - y1 - 4, color ); DrawVLine( x2, y1 + 2, y2 - y1 - 4, color ); } } void LCD::FillRect( unsigned short x1, unsigned short y1, unsigned short x2, unsigned short y2, int color ) { if ( x1 > x2 ) swap( ushort, x1, x2 ); if ( y1 > y2 ) swap( ushort, y1, y2 ); if ( _orientation == PORTRAIT ) { for ( int i = 0; i < ( ( y2 - y1 ) / 2 ) + 1; i++ ) { DrawHLine( x1, y1 + i, x2 - x1, color ); DrawHLine( x1, y2 - i, x2 - x1, color ); } } else { for ( int i = 0; i < ( ( x2 - x1 ) / 2 ) + 1; i++ ) { DrawVLine( x1 + i, y1, y2 - y1, color ); DrawVLine( x2 - i, y1, y2 - y1, color ); } } } void LCD::FillRoundRect( unsigned short x1, unsigned short y1, unsigned short x2, unsigned short y2, int color ) { if ( x1 > x2 ) swap( ushort, x1, x2 ) if ( y1 > y2 ) swap( ushort, y1, y2 ) if ( ( x2 - x1 ) > 4 && ( y2 - y1 ) > 4 ) { for ( int i = 0; i < ( ( y2 - y1 ) / 2 ) + 1; i++ ) { switch ( i ) { case 0: DrawHLine( x1 + 2, y1 + i, x2 - x1 - 4, color ); DrawHLine( x1 + 2, y2 - i, x2 - x1 - 4, color ); break; case 1: DrawHLine( x1 + 1, y1 + i, x2 - x1 - 2, color ); DrawHLine( x1 + 1, y2 - i, x2 - x1 - 2, color ); break; default: DrawHLine( x1, y1 + i, x2 - x1, color ); DrawHLine( x1, y2 - i, x2 - x1, color ); break; } } } } void LCD::DrawCircle( unsigned short x, unsigned short y, unsigned short radius, int color ) { int f = 1 - radius; int ddF_x = 1; int ddF_y = -2 * radius; int x1 = 0; int y1 = radius; unsigned short usedColor = color == -1 ? _background : color == -2 ? _foreground : ( unsigned short ) color; Activate(); SetXY( x, y + radius, x, y + radius ); WriteData( usedColor ); SetXY( x, y - radius, x, y - radius ); WriteData( usedColor ); SetXY( x + radius, y, x + radius, y ); WriteData( usedColor ); SetXY( x - radius, y, x - radius, y ); WriteData( usedColor ); while ( x1 < y1 ) { if ( f >= 0 ) { y1--; ddF_y += 2; f += ddF_y; } x1++; ddF_x += 2; f += ddF_x; SetXY( x + x1, y + y1, x + x1, y + y1 ); WriteData( usedColor ); SetXY( x - x1, y + y1, x - x1, y + y1 ); WriteData( usedColor ); SetXY( x + x1, y - y1, x + x1, y - y1 ); WriteData( usedColor ); SetXY( x - x1, y - y1, x - x1, y - y1 ); WriteData( usedColor ); SetXY( x + y1, y + x1, x + y1, y + x1 ); WriteData( usedColor ); SetXY( x - y1, y + x1, x - y1, y + x1 ); WriteData( usedColor ); SetXY( x + y1, y - x1, x + y1, y - x1 ); WriteData( usedColor ); SetXY( x - y1, y - x1, x - y1, y - x1 ); WriteData( usedColor ); } 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; Activate(); for ( int y1 = -radius; y1 <= radius; y1++ ) for ( int x1 = -radius; x1 <= radius; x1++ ) if ( x1 * x1 + y1 * y1 <= radius * radius ) { SetXY( x + x1, y + y1, x + x1, y + y1 ); WriteData( usedColor ); } Deactivate(); } void LCD::Print( const char *str, unsigned short x, unsigned short y, int fgColor, int bgColor, unsigned short deg ) { int stl, i; stl = strlen( str ); if ( _orientation == PORTRAIT ) { if ( x == RIGHT ) x = _disp_width - ( stl * _font.width ); if ( x == CENTER ) x = ( _disp_width - ( stl * _font.width ) ) / 2; } else { if ( x == RIGHT ) x = _disp_height - ( stl * _font.width ); if ( x == CENTER ) x = ( _disp_height - ( stl * _font.width ) ) / 2; } for ( i = 0; i < stl; i++ ) if ( deg == 0 ) PrintChar( *str++, x + ( i * ( _font.width ) ), y, fgColor, bgColor ); else RotateChar( *str++, x, y, i, fgColor, bgColor, deg ); } void LCD::DrawBitmap( unsigned short x, unsigned short y, unsigned short sx, unsigned short sy, const unsigned short* imgPixelData, unsigned char scale ) { int tx, ty, tc, tsx, tsy; Activate(); if ( scale == 1 ) { if ( _orientation == PORTRAIT ) { SetXY( x, y, x + sx - 1, y + sy - 1 ); for ( tc = 0; tc < ( sx * sy ); tc++ ) WriteData( imgPixelData[ tc ] ); } else { for ( ty = 0; ty < sy; ty++ ) { SetXY( x, y + ty, x + sx - 1, y + ty ); for ( tx = sx; tx >= 0; tx-- ) WriteData( imgPixelData[ ( ty * sx ) + tx ] ); } } } else { if ( _orientation == PORTRAIT ) { for ( ty = 0; ty < sy; ty++ ) { SetXY( x, y + ( ty * scale ), x + ( ( sx * scale ) - 1 ), y + ( ty * scale ) + scale ); for ( tsy = 0; tsy < scale; tsy++ ) for ( tx = 0; tx < sx; tx++ ) for ( tsx = 0; tsx < scale; tsx++ ) WriteData( imgPixelData[ ( ty * sx ) + tx ] ); } } else { for ( ty = 0; ty < sy; ty++ ) { for ( tsy = 0; tsy < scale; tsy++ ) { SetXY( x, y + ( ty * scale ) + tsy, x + ( ( sx * scale ) - 1 ), y + ( ty * scale ) + tsy ); for ( tx = sx; tx >= 0; tx-- ) for ( tsx = 0; tsx < scale; tsx++ ) WriteData( imgPixelData[ ( ty * sx ) + tx ] ); } } } } Deactivate(); } void LCD::DrawBitmap( unsigned short x, unsigned short y, unsigned short sx, unsigned short sy, const unsigned short* imgPixelData, unsigned short deg, unsigned short rox, unsigned short roy ) { int tx, ty, newx, newy; double radian; radian = deg * 0.0175; if ( deg == 0 ) DrawBitmap( x, y, sx, sy, imgPixelData ); else { Activate(); for ( ty = 0; ty < sy; ty++ ) for ( tx = 0; tx < sx; tx++ ) { newx = x + rox + ( ( ( tx - rox ) * cos( radian ) ) - ( ( ty - roy ) * sin( radian ) ) ); newy = y + roy + ( ( ( ty - roy ) * cos( radian ) ) + ( ( tx - rox ) * sin( radian ) ) ); SetXY( newx, newy, newx, newy ); WriteData( imgPixelData[ ( ty * sx ) + tx ] ); } Deactivate(); } } inline void LCD::Activate( void ) { _lcd_pin_cs = LOW; } inline void LCD::Deactivate( void ) { _lcd_pin_cs = HIGH; } /* void LCD::WriteCmd( unsigned short cmd ) { _lcd_pin_rs = LOW; _lcd_port->write( cmd ); pulseLow( _lcd_pin_wr ); } */ /* void LCD::WriteData( unsigned short data ) { _lcd_pin_rs = HIGH; _lcd_port->write( data ); pulseLow( _lcd_pin_wr ); } */ inline void LCD::WriteCmdData( unsigned short cmd, unsigned short data ) { WriteCmd( cmd ); WriteData( data ); } /* void LCD::SetXY( uint16_t x1, uint16_t y1, uint16_t x2, uint16_t y2 ) { if ( _orientation == LANDSCAPE ) { swap( uint16_t, x1, y1 ) swap( uint16_t, x2, y2 ) y1 = _disp_height - y1; y2 = _disp_height - y2; swap( uint16_t, y1, y2 ) } WriteCmdData( 0x44, ( x2 << 8 ) + x1 ); WriteCmdData( 0x45, y1 ); WriteCmdData( 0x46, y2 ); WriteCmdData( 0x4e, x1 ); WriteCmdData( 0x4f, y1 ); WriteCmd( 0x22 ); } */ void LCD::ClearXY() { if ( _orientation == PORTRAIT ) SetXY( 0, 0, _disp_width - 1, _disp_height - 1 ); else SetXY( 0, 0, _disp_height - 1, _disp_width - 1 ); } void LCD::DrawHLine( unsigned short x, unsigned short y, unsigned short len, int color ) { unsigned short usedColor = color == -1 ? _background : color == -2 ? _foreground : ( unsigned short ) color; Activate(); SetXY( x, y, x + len, y ); for ( int i = 0; i < len + 1; i++ ) WriteData( usedColor ); 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; Activate(); SetXY( x, y, x, y + len ); for ( int i = 0; i < len; i++ ) WriteData( usedColor ); Deactivate(); } void LCD::PrintChar( char c, unsigned short x, unsigned short y, int fgColor, int bgColor ) { uint8_t i, ch; uint16_t j; uint16_t temp; unsigned short usedColorFG = fgColor == -1 ? _background : fgColor == -2 ? _foreground : ( unsigned short ) fgColor; unsigned short usedColorBG = bgColor == -1 ? _background : bgColor == -2 ? _foreground : ( unsigned short ) bgColor; Activate(); if ( _orientation == PORTRAIT ) { SetXY( x, y, x + _font.width - 1, y + _font.height - 1 ); temp = ( ( c - _font.offset ) * ( ( _font.width / 8 ) * _font.height ) ) + 4; for ( j = 0; j < ( ( _font.width / 8 ) * _font.height ); j++ ) { ch = _font.font[ temp ]; for ( i = 0; i < 8; i++ ) { if ( ( ch & ( 1 << ( 7 - i ) ) ) != 0 ) WriteData( usedColorFG ); else WriteData( usedColorBG ); } temp++; } } else { temp = ( ( c - _font.offset ) * ( ( _font.width / 8 ) * _font.height ) ) + 4; for ( j = 0; j < ( ( _font.width / 8 ) * _font.height ); j += ( _font.width / 8 ) ) { SetXY( x, y + ( j / ( _font.width / 8 ) ), x + _font.width - 1, y + ( j / ( _font.width / 8 ) ) ); for ( int zz = ( _font.width / 8 ) - 1; zz >= 0; zz-- ) { ch = _font.font[ temp + zz ]; for ( i = 0; i < 8; i++ ) { if ( ( ch & ( 1 << i ) ) != 0 ) WriteData( usedColorFG ); else WriteData( usedColorBG ); } } temp += ( _font.width / 8 ); } } Deactivate(); } void LCD::RotateChar( char c, unsigned short x, unsigned short y, int pos, int fgColor, int bgColor, unsigned short deg ) { uint8_t i, j, ch; uint16_t temp; int newx, newy; double radian; radian = deg * 0.0175; unsigned short usedColorFG = fgColor == -1 ? _background : fgColor == -2 ? _foreground : ( unsigned short ) fgColor; unsigned short usedColorBG = bgColor == -1 ? _background : bgColor == -2 ? _foreground : ( unsigned short ) bgColor; Activate(); temp = ( ( c - _font.offset ) * ( ( _font.width / 8 ) * _font.height ) ) + 4; for ( j = 0; j < _font.height; j++ ) { for ( int zz = 0; zz < ( _font.width / 8 ); zz++ ) { ch = _font.font[ temp + zz ]; for ( i = 0; i < 8; i++ ) { newx = x + ( ( ( i + ( zz * 8 ) + ( pos * _font.width ) ) * cos( radian ) ) - ( ( j ) * sin( radian ) ) ); newy = y + ( ( ( j ) * cos( radian ) ) + ( ( i + ( zz * 8 ) + ( pos * _font.width ) ) * sin( radian ) ) ); SetXY( newx, newy, newx + 1, newy + 1 ); if ( ( ch & ( 1 << ( 7 - i ) ) ) != 0 ) WriteData( usedColorFG ); else WriteData( usedColorBG ); } } temp += ( _font.width / 8 ); } Deactivate(); }