Rune Langoy / mcufriend_24_tft_lcd

mcufriend 2.4 TFT LCD Shield Lib

Dependents:   Nucleo_LCD_mcufriend_test

Fork of 24_TFT_STMNUCLEO by Carlos Silva

mcufriend 2.4" TFT LCD Shield

front back

Import program
Nucleo_LCD_mcufriend_test - main.cpp

00001 #include "mbed.h"
00002 #include "ili9328.h"
00003 
00004 // prepare the data bus for writing commands and pixel data
00005 BusOut dataBus( D8, D9, D2, D3, D4, D5, D6, D7 ); // 8 pins
00006 // create the lcd instance
00007 ILI9328_LCD lcd( A3,  A4, A2,A1, &dataBus, NC, A0); // control pins and data bus
00008 //ILI9328_LCD(  CS,  RESET,  RS, WR, BusOut* DATA_PORT, PinName BL = NC,  RD );
00009    
00010 int main()
00011 {
00012     int ii,height,width;
00013     
00014     height = lcd.GetHeight();
00015     width =  lcd.GetWidth();
00016     // initialize display - place it in standard portrait mode and set background to black and
00017     //                      foreground to white color.
00018     lcd.Initialize();
00019 
00020     // print something on the screen
00021     lcd.Print( "Hello, World!", CENTER, 50); // align text to center horizontally and use starndard colors
00022  
00023     wait(2);
00024    
00025     lcd.ClearScreen();
00026  
00027     for(ii=0;ii<width;ii++)
00028     {
00029         lcd.DrawLine(0, 0, height, ii,COLOR_GREEN);
00030         ii = ii+10;    
00031     }
00032     wait(2);
00033  
00034     lcd.DrawCircle(height/4, width/4, 20, COLOR_GREEN);
00035     wait(2);
00036  
00037     lcd.FillCircle(height/2, width/2, 50, COLOR_GREEN);
00038     wait(2);
00039  
00040     lcd.FillTriangle(height/4, width/4,(height/4)+20, (width/4)+40,(height/4)-20, (width/4)+40, COLOR_RED);
00041  
00042     while ( 1 ) { }
00043 }

HW information about the mcufriend LCD Shield

Diff: st7735.cpp

Revision:
20:4bdca8d8dadc
Parent:
15:af3cd35886fb
Child:
22:4c169297f374
--- a/st7735.cpp	Thu Dec 13 03:37:22 2012 +0000
+++ b/st7735.cpp	Fri Dec 21 06:05:15 2012 +0000
@@ -162,9 +162,9 @@
     WriteCmd( 0x36 ); //MX, MY, RGB mode
     switch ( _orientation )
     {
-        case LANDSCAPE: WriteByteData( 0xB8 ); break;
+        case LANDSCAPE: WriteByteData( 0x6C ); break;
         case PORTRAIT_REV: WriteByteData( 0xDC ); break;
-        case LANDSCAPE_REV: WriteByteData( 0x6C ); break;
+        case LANDSCAPE_REV: WriteByteData( 0xB8 ); break;
         case PORTRAIT:
         default: WriteByteData( 0x08 ); break;
     }
@@ -217,7 +217,7 @@
     serializeByte( data );
 }
 
-void ST7735_LCD::SetXY( uint16_t x1, uint16_t y1, uint16_t x2, uint16_t y2 )
+void ST7735_LCD::SetXY( unsigned short x1, unsigned short y1, unsigned short x2, unsigned short y2 )
 {
     WriteCmdData( 0x2a, x1 );
     WriteData( x2 );
@@ -226,22 +226,56 @@
     WriteCmd( 0x2c );
 }
 
-void ST7735_LCD::SetPixelColor( unsigned int color )
+void ST7735_LCD::SetPixelColor( unsigned int color, colordepth_t mode )
 {
-    unsigned char r, g, b;
-    r = ( color >> 16 ) & 0xFF;
-    g = ( color >> 8 ) & 0xFF;
-    b = color & 0xFF;
+    unsigned char r = 0, g = 0, b = 0;
+    unsigned short clr;
     if ( _colorDepth == RGB16 )
     {
-        unsigned short clr = ( ( ( ( r ) & 0xF8 ) | ( ( g ) >> 5 ) ) << 8 ) | ( ( ( ( g ) & 0x1C ) << 3 ) | ( ( b ) >> 3 ) );
-        WriteData( clr );
+        switch ( mode )
+        {
+            case RGB16:
+                WriteData( color & 0xFFFF );
+                break;
+            case RGB18:
+                r = ( color >> 10 ) & 0xF8;
+                g = ( color >> 4 ) & 0xFC;
+                b = ( color >> 1 ) & 0x1F;
+                clr = ( ( r | ( g >> 5 ) ) << 8 ) | ( ( g << 3 ) | b );
+                WriteData( clr );
+                break;
+            case RGB24:
+                r = ( color >> 16 ) & 0xF8;
+                g = ( color >> 8 ) & 0xFC;
+                b = color & 0xF8;
+                clr = ( ( r | ( g >> 5 ) ) << 8 ) | ( ( g << 3 ) | ( b >> 3 ) );
+                WriteData( clr );
+                break;
+        }
     }
     else if ( _colorDepth == RGB18 )
     {
-        WriteByteData( r & 0xFC );
-        WriteByteData( g & 0xFC );
-        WriteByteData( b & 0xFC );
+        switch ( mode )
+        {
+            case RGB16:
+                r = ( ( color >> 8 ) & 0xF8 ) | ( ( color & 0x8000 ) >> 13 );
+                g = ( color >> 3 ) & 0xFC;
+                b = ( ( color << 3 ) & 0xFC ) | ( ( color >> 3 ) & 0x01 );
+                break;
+            case RGB18:
+                b = ( color << 2 ) & 0xFC;
+                g = ( color >> 4 ) & 0xFC;
+                r = ( color >> 10 ) & 0xFC;
+                break;
+            case RGB24:
+                r = ( color >> 16 ) & 0xFC;
+                g = ( color >> 8 ) & 0xFC;
+                b = color & 0xFC;
+                break;
+        }
+        WriteByteData( r );
+        WriteByteData( g );
+        WriteByteData( b );
     }
 }