Steffen Arntz / TFTLCD

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.

Dependents:   UTFT_SSD1289

Fork of TFTLCD by Todor Todorov

Diff: hx8340bs.cpp

Revision:
12:d0978272a340
Parent:
10:69571adcfad5
Child:
15:af3cd35886fb
--- a/hx8340bs.cpp	Tue Dec 11 16:50:09 2012 +0000
+++ b/hx8340bs.cpp	Tue Dec 11 18:11:14 2012 +0000
@@ -29,9 +29,10 @@
     else _lcd_pin_bl = 0;
 }
 
-void HX8340S_LCD::Initialize( orientation_t orientation )
+void HX8340S_LCD::Initialize( orientation_t orientation, colordepth_t colors )
 {
     _orientation = orientation;
+    _colorDepth = colors;
     
     wait_ms( 100 );
     _lcd_pin_reset = HIGH;
@@ -47,17 +48,20 @@
     wait_ms( 55 );
     
     Activate();
-    WriteCmd( 0xC1 );
+    WriteCmd( 0xC1 ); // SETEXTCMD
     WriteByteData( 0xFF );
     WriteByteData( 0x83 );
     WriteByteData( 0x40 );
-    WriteCmd( 0x11 );
+    
+    WriteCmd( 0x11 ); // SLPOUT
     wait_ms( 160 );
+    
     WriteCmd( 0xCA );
     WriteByteData( 0x70 );
     WriteByteData( 0x00 );
     WriteByteData( 0xD9 );
-    WriteCmd( 0xB0 );
+    
+    WriteCmd( 0xB0 ); // SETOSC
     WriteByteData( 0x01 );
     WriteByteData( 0x11 );
 
@@ -71,7 +75,8 @@
     WriteByteData( 0x00 );
     WriteByteData( 0x06 );
     wait_ms( 20 );
-    WriteCmd( 0xC2 );
+    
+    WriteCmd( 0xC2 ); // SETGAMMAP
     WriteByteData( 0x60 );
     WriteByteData( 0x71 );
     WriteByteData( 0x01 );
@@ -82,7 +87,7 @@
     WriteByteData( 0x31 );
     WriteByteData( 0x0A );
 
-    WriteCmd( 0xc3 );
+    WriteCmd( 0xc3 ); // SETGAMMAN
     WriteByteData( 0x67 );
     WriteByteData( 0x30 );
     WriteByteData( 0x61 );
@@ -92,31 +97,35 @@
     WriteByteData( 0x05 );
     WriteByteData( 0x33 );
     wait_ms( 10 );
-    WriteCmd( 0xB5 );
+    
+    WriteCmd( 0xB5 ); // SETPWCTR5
     WriteByteData( 0x35 );
     WriteByteData( 0x20 );
     WriteByteData( 0x45 );
 
-    WriteCmd( 0xB4 );
+    WriteCmd( 0xB4 ); // SETPWCTR4
     WriteByteData( 0x33 );
     WriteByteData( 0x25 );
     WriteByteData( 0x4c );
     wait_ms( 10 );
-    WriteCmd( 0x3a );
-    WriteByteData( 0x05 );
-    WriteCmd( 0x29 );
+    
+    WriteCmd( 0x3A ); // COLMOD == color depth: 0x05 => 16bit, 0x06 => 18bit
+    WriteByteData( _colorDepth == RGB16 ? 0x05 : 0x06 );
+    
+    WriteCmd( 0x36 ); // MADCTL
+    switch ( _orientation )
+    {
+        case LANDSCAPE: WriteByteData( 0xB8 ); break;
+        case PORTRAIT_REV: WriteByteData( 0xDC ); break;
+        case LANDSCAPE_REV: WriteByteData( 0x6C ); break;
+        case PORTRAIT:
+        default: WriteByteData( 0x08 ); break;
+    }
+    
+    WriteCmd( 0x29 ); // DISPON
     wait_ms( 10 );
-    WriteCmd( 0x2a );
-    WriteByteData( 0x00 );
-    WriteByteData( 0x00 );
-    WriteByteData( 0x00 );
-    WriteByteData( 0xaf );
-    WriteCmd( 0x2b );
-    WriteByteData( 0x00 );
-    WriteByteData( 0x00 );
-    WriteByteData( 0x00 );
-    WriteByteData( 0xdb );
-    WriteCmd( 0x2c );
+    
+    ClearXY();
     Deactivate();
 }
 
@@ -170,25 +179,30 @@
 
 void HX8340S_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( 0x2a, x1 );
+    WriteCmdData( 0x2A, x1 );  // CASET
     WriteData( x2 );
-    WriteCmdData( 0x2b, y1 );
+    WriteCmdData( 0x2B, y1 );  // PASET
     WriteData( y2 );
-    WriteCmd( 0x2c );
+    WriteCmd( 0x2C ); // RAMWR
 }
 
-void HX8340S_LCD::SetPixelColor( unsigned short color )
+void HX8340S_LCD::SetPixelColor( unsigned int color )
 {
-    WriteData( color );
+    unsigned char r, g, b;
+    r = ( color >> 16 ) & 0xFF;
+    g = ( color >> 8 ) & 0xFF;
+    b = color & 0xFF;
+    if ( _colorDepth == RGB16 )
+    {
+        unsigned short clr = ( ( ( ( r ) & 0xF8 ) | ( ( g ) >> 5 ) ) << 8 ) | ( ( ( ( g ) & 0x1C ) << 3 ) | ( ( b ) >> 3 ) );
+        WriteData( clr );
+    }
+    else
+    {
+        WriteByteData( r & 0xFC );
+        WriteByteData( g & 0xFC );
+        WriteByteData( b & 0xFC );
+    }
 }
 
 void HX8340S_LCD::serializeByte( unsigned char data )