Library to control a Graphics TFT connected to 4-wire SPI - revised for the Raio RA8875 Display Controller.

Dependents:   FRDM_RA8875_mPaint RA8875_Demo RA8875_KeyPadDemo SignalGenerator ... more

Fork of SPI_TFT by Peter Drescher

See Components - RA8875 Based Display

Enhanced touch-screen support - where it previous supported both the Resistive Touch and Capacitive Touch based on the FT5206 Touch Controller, now it also has support for the GSL1680 Touch Controller.

Offline Help Manual (Windows chm)

/media/uploads/WiredHome/ra8875.zip.bin (download, rename to .zip and unzip)

Revision:
37:f19b7e7449dc
Parent:
34:c99ec28fac66
Child:
40:04aa280dfa39
--- a/GraphicsDisplay.cpp	Sat Jan 25 00:00:02 2014 +0000
+++ b/GraphicsDisplay.cpp	Sat Jan 25 19:47:33 2014 +0000
@@ -12,7 +12,7 @@
 // provided by the super-class.
 #define USE_HW
 
-//#define DEBUG "GD"
+#define DEBUG "GD"
 // ...
 // INFO("Stuff to show %d", var); // new-line is automatically appended
 //
@@ -47,8 +47,6 @@
 #define HexDump(a, b, c)
 #endif
 
-// #define LOCALFONT
-
 #ifdef LOCALFONT
 const unsigned char FONT8x8[97][8] = {
     0x08, 0x08, 0x08, 0X00, 0X00, 0X00, 0X00, 0X00, // columns, rows, num_bytes_per_char
@@ -155,21 +153,17 @@
     : TextDisplay(name)
 {
     font = NULL;
-    //foreground(0xFFFF);
-    //background(0x0000);
 }
 
 RetCode_t GraphicsDisplay::set_font(const unsigned char * _font)
 {
-    font = _font;
-    INFO("set_font(%lu) %lu", _font, font);
-    return noerror;     // trusting them, but it might be good to put some checks in here...
+    font = _font;     // trusting them, but it might be good to put some checks in here...
+    return noerror;
 }
 
 #ifdef LOCALFONT
 int GraphicsDisplay::character(int x, int y, int value)
 {
-    INFO("character(%d,%d,%c)", x, t, value);
     if (value <= 0x1F && value >= 7F)
         return 0;
     
@@ -190,7 +184,7 @@
 }
 #endif
 
-RetCode_t GraphicsDisplay::window(unsigned int x, unsigned int y, unsigned int w, unsigned int h)
+RetCode_t GraphicsDisplay::window(loc_t x, loc_t y, dim_t w, dim_t h)
 {
     // current pixel location
     _x = x;
@@ -210,7 +204,6 @@
 
 RetCode_t GraphicsDisplay::putp(color_t color)
 {
-    // put pixel at current pixel location
     pixel(_x, _y, color);
     // update pixel location based on window settings
     _x++;
@@ -230,9 +223,12 @@
     fillrect(x,y, x+w, y+h, color);
     #else
     window(x, y, w, h);
+    _StartGraphicsStream();
     for(int i=0; i<w*h; i++) {
         putp(color);
     }
+    _EndGraphicsStream();
+    WindowMax();
     #endif
 }
 
@@ -245,11 +241,15 @@
 void GraphicsDisplay::blit(int x, int y, int w, int h, const int * color)
 {
     window(x, y, w, h);
+    _StartGraphicsStream();
     for (int i=0; i<w*h; i++) {
         putp(color[i]);
     }
+    _EndGraphicsStream();
+    WindowMax();
 }
 
+#ifdef LOCALFONT
 int GraphicsDisplay::blitbit(int x, int y, int w, int h, const char * color)
 {
     _foreground = 0xFFFF;
@@ -259,6 +259,7 @@
         color[0], color[1], color[2], color[3], color[4], color[5], color[6], color[7], 
         color[8], color[9], color[10], color[11], color[12], color[13], color[14], color[15]);
     window(x, y, w, h);
+    _StartGraphicsStream();
     for (int i = 0; i < w*h; i++) {
         char byte = color[i >> 3];
         int offset = i & 0x7;
@@ -267,30 +268,42 @@
         int c = ((byte << offset) & 0x80) ? _foreground : _background;
         putp(c);
     }
+    _EndGraphicsStream();
+    WindowMax();
     return w;
 }
+#endif
 
 
 int GraphicsDisplay::fontblit(int x, int y, const unsigned char * fontTable, const unsigned char * fontChar)
 {
-    _foreground = 0xFFFF;
     //int fontWidth = font[1];                       // get hor size of font
     int fontHeight = font[2];                      // get vert size of font
     int bytesPerLine = font[3];                       // bytes per line
     int charWidth = fontChar[0];        // width of this character
     int px, py;
+    
+    //INFO("(%d,%d) %lu, %lu %X/%X", x,y, fontTable, fontChar, _foreground, _background);
+    //INFO("char size (%d,%d)", charWidth, fontHeight);
+    //HexDump("char", (uint8_t *)fontChar, 32);
+    //INFO("(f,b) = (%04X,%04X)", _foreground, _background)
     window(x, y, charWidth, fontHeight);
-    
+    _StartGraphicsStream();
+    //INFO("(f,b) = (%04X,%04X)", _foreground, _background)
     for (py = 0; py < fontHeight; py++) {
         int bitmask = 1 << (py & 7);
         
         for (px = 0; px < charWidth; px++) {
             int offset = (py / 8) + px * bytesPerLine;
             unsigned char byte = fontChar[offset + 1];  // skip the char's # bits wide value
-            int c = (byte & bitmask) ? _foreground : _background;
+            color_t c = (byte & bitmask) ? _foreground : _background;
+            //INFO("(%2d,%2d) %02X & %02X => %04X [%04X,%04X]", px, py, byte, bitmask, c, _foreground, _background);
+            //pixel(x+px, y+py, c);
             putp(c);
         }
     }
+    _EndGraphicsStream();
+    WindowMax();
     return charWidth;
 }
 
@@ -307,14 +320,11 @@
     c  = ((colorPalette[i].rgbBlue  >> 3) <<  0);
     c |= ((colorPalette[i].rgbGreen >> 2) <<  5);
     c |= ((colorPalette[i].rgbRed   >> 3) << 11);
-    c = (c >> 8) | (c << 8);
-    //INFO("B %02X G %02X R %02X c %04X", colorPalette[i].rgbBlue, colorPalette[i].rgbGreen, 
-    //    colorPalette[i].rgbRed, c);
     return c;
 }
 
 
-RetCode_t GraphicsDisplay::RenderBitmapFile(unsigned int x, unsigned int y, const char *Name_BMP)
+RetCode_t GraphicsDisplay::RenderBitmapFile(loc_t x, loc_t y, const char *Name_BMP)
 {
     #define OffsetPixelWidth    18
     #define OffsetPixelHeight   22
@@ -327,7 +337,6 @@
     RGBQUAD * colorPalette = NULL;
     int colorCount;
     uint8_t * lineBuffer = NULL;
-    
     uint16_t BPP_t;
     uint32_t PixelWidth, PixelHeight;
     uint32_t start_data;
@@ -410,15 +419,12 @@
     
     start_data = BMP_Header.bfOffBits;
     HexDump("Raw Data", (uint8_t *)&start_data, 32);
-    //bool tag = true;
     //INFO("(%d,%d) (%d,%d), [%d,%d]", x,y, PixelWidth,PixelHeight, lineBufSize, padd);
     for (j = PixelHeight - 1; j >= 0; j--) {                //Lines bottom up
         offset = start_data + j * (lineBufSize + padd);     // start of line
         fseek(Image, offset, SEEK_SET);
         fread(lineBuffer, 1, lineBufSize, Image);           // read a line - slow !
         //INFO("offset: %6X", offset);
-        //if (tag)
-        //    HexDump("Line", (uint8_t *)lineBuffer, lineBufSize);
         for (i = 0; i < PixelWidth; i++) {                  // copy pixel data to TFT
             if (BPP_t == 4) {
                 uint8_t dPix = lineBuffer[i/2];
@@ -431,16 +437,11 @@
             } else if (BPP_t == 16) {
                 putp(lineBuffer[i]);
             } else if (BPP_t == 24) {
-                color_t color;  // BGR
+                color_t color;
                 color = RGB(lineBuffer[i*3+2], lineBuffer[i*3+1], lineBuffer[i*3+0]);
-                //if (tag) 
-                //    INFO("color[%2d]: RGB(%02X,%02X,%02X) => %04X", 
-                //        i, lineBuffer[i*2], lineBuffer[i*3+1], lineBuffer[i*3+0], color);
-                color = (color >> 8) | (color << 8);
                 putp(color);
             }
         }
-        //tag = false;
     }
     free(lineBuffer);
     free(colorPalette);