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: ili9328.cpp

Revision:
26:28f64fbcf7df
Parent:
25:6cffb758c075
Child:
27:26491d710e72
--- a/ili9328.cpp	Sun Jun 16 02:53:06 2013 +0000
+++ b/ili9328.cpp	Sun Jun 16 03:36:07 2013 +0000
@@ -85,6 +85,10 @@
     }
     switch ( _colorDepth )
     {
+        case RGB18:
+            entryMod |= 0x9000;
+            break;
+            
         case RGB16:
         default:
             entryMod |= 0x1000;
@@ -212,6 +216,7 @@
 {
     unsigned char r, g, b;
     unsigned short clr;
+    r = g = b = 0;
     if ( _colorDepth == RGB16 )
     {
         switch ( mode )
@@ -243,23 +248,20 @@
                 r = ( ( color >> 8 ) & 0xF8 ) | ( ( color & 0x8000 ) >> 13 );
                 g = ( color >> 3 ) & 0xFC;
                 b = ( ( color << 3 ) & 0xFC ) | ( ( color >> 3 ) & 0x01 );
-                WriteData( ( r << 8 ) | g );
-                WriteData( b );
                 break;
             case RGB18:
                 b = ( color << 2 ) & 0xFC;
                 g = ( color >> 4 ) & 0xFC;
                 r = ( color >> 10 ) & 0xFC;
-                WriteData( ( r << 8 ) | g );
-                WriteData( b );
                 break;
             case RGB24:
                 r = ( color >> 16 ) & 0xFC;
                 g = ( color >> 8 ) & 0xFC;
                 b = color & 0xFC;
-                WriteData( ( r << 8 ) | g );
-                WriteData( b );
                 break;
         }
+        clr = ( r << 8 ) | ( g << 2 ) | ( b >> 4 );
+        WriteData( clr );
+        WriteData( b << 4 );
     }
 }