main.cpp

00001 /**********************************************************************************************
00002  Copyright (c) 2014 DisplayModule. All rights reserved.
00003 
00004  Redistribution and use of this source code, part of this source code or any compiled binary
00005  based on this source code is permitted as long as the above copyright notice and following
00006  disclaimer is retained.
00007 
00008  DISCLAIMER:
00009  THIS SOFTWARE IS SUPPLIED "AS IS" WITHOUT ANY WARRANTIES AND SUPPORT. DISPLAYMODULE ASSUMES
00010  NO RESPONSIBILITY OR LIABILITY FOR THE USE OF THE SOFTWARE.
00011  ********************************************************************************************/
00012 
00013 /******************************************************************************
00014  * Includes
00015  *****************************************************************************/
00016 
00017 #include "mbed.h"
00018 
00019 #include "DmTftHX8353C.h"
00020 #include "DmTftS6D0164.h"
00021 #include "DmTftIli9325.h"
00022 #include "DmTftIli9341.h"
00023 #include "DmTftSsd2119.h"
00024 #include "DmTftRa8875.h"
00025 
00026 /******************************************************************************
00027  * Typedefs and defines
00028  *****************************************************************************/
00029 
00030 /* Note that there are restrictions on which platforms that can use printf
00031    in combinations with the DmTftLibrary. Some platforms (e.g. LPC1549 LPCXpresso)
00032    use the same pins for USBRX/USBTX and display control. Printing will
00033    cause the display to not work. Read more about this on the display's notebook
00034    page. */
00035 #define log(...) printf(__VA_ARGS__)
00036 //#define log(...)
00037 
00038 /******************************************************************************
00039  * Local variables
00040  *****************************************************************************/
00041 
00042 //DmTftHX8353C tft(D2, D3, D4, D5, D6);  /* DmTftHX8353C(PinName mosi, PinName clk, PinName cs, PinName dc, PinName rst) DM_TFT18_101 */
00043 //DmTftS6D0164 tft(A4, A3, A5, A2);  /* DmTftS6D0164(PinName wr, PinName cs, PinName dc, PinName rst) DM_TFT22_102 */
00044 //DmTftIli9325 tft(A4, A3, A5, A2);  /* DmTftIli9325(PinName wr, PinName cs, PinName dc, PinName rst) DM_TFT28_103 and DM_TFT24_104 */
00045 DmTftIli9341 tft(D10, D9, D11, D12, D13);  /* DmTftIli9341(PinName cs, PinName dc, PinName mosi, PinName miso, PinName clk)  DM_TFT28_105 */
00046 //DmTftSsd2119 tft(D10, D9, D11, D12, D13);  /* DmTftSsd2119(PinName cs, PinName dc, PinName mosi, PinName miso, PinName clk) DM_TFT35_107 */
00047 //DmTftRa8875  tft(D10, D9, D11, D12, D13);  /* DmTftRa8875(PinName cs, PinName sel, PinName mosi, PinName miso, PinName clk) DM_TFT43_108 and DM_TFT50_111   For DmTftRa8875 driver, The panel resolution should be config in DmTftRa8875::init() function on the DmTftRa8875.cpp file. */
00048 
00049 int bmpWidth, bmpHeight;
00050 uint8_t bmpImageoffset;
00051 
00052 /******************************************************************************
00053  * Global variables
00054  *****************************************************************************/
00055 
00056 extern uint8_t dmlogo[];
00057 
00058 /******************************************************************************
00059  * Local functions
00060  *****************************************************************************/
00061 
00062 // LITTLE ENDIAN!
00063 uint16_t read16(uint8_t *src)
00064 {
00065   uint16_t d;
00066   uint8_t b;
00067   b = *src;
00068   d = *(src+1);
00069   d <<= 8;
00070   d |= b;
00071   return d;
00072 }
00073 
00074 // LITTLE ENDIAN!
00075 uint32_t read32(uint8_t *src)
00076 {
00077   uint32_t d;
00078   uint16_t b;
00079 
00080   b = read16(src);
00081   d = read16(src+2);
00082   d <<= 16;
00083   d |= b;
00084   return d;
00085 }
00086 
00087 void drawBmpFromFlash(int x, int y)
00088 {
00089   uint16_t pos = bmpImageoffset;
00090 
00091   uint16_t p;  // pixel
00092   uint8_t g, b;
00093   int i, j; // line, column
00094 
00095   for(i=bmpHeight; i>0; i--) {
00096     for(j=0; j<bmpWidth; j++) {
00097       b = *(dmlogo+pos++);
00098       g = *(dmlogo+pos++);
00099       p = *(dmlogo+pos++);
00100 
00101       p >>= 3;
00102       p <<= 6;
00103 
00104       g >>= 2;
00105       p |= g;
00106       p <<= 5;
00107 
00108       b >>= 3;
00109       p |= b;
00110 
00111       // write out the 16 bits of color
00112       tft.setPixel(j, i+y, p);
00113     }
00114   }
00115 }
00116 
00117 
00118 int bmpReadHeader() {
00119   uint32_t fileSize;
00120   uint32_t headerSize;
00121   uint16_t bmpDepth;
00122   uint16_t pos = 0;
00123   log("reading bmp header\r\n");
00124   log("Magic byte is: %d \r\n", read16(dmlogo));
00125 
00126   if (read16(dmlogo) !=0x4D42){ // read magic byte
00127     log("Magic byte not found\r\n");
00128     return false;
00129   }
00130   pos += 2;
00131 
00132   // read file size
00133   fileSize = read32(dmlogo+pos);
00134   log("filesize is: %d \r\n", fileSize);
00135   log("");
00136   pos += 4;
00137 
00138   pos += 4; // Skip creator bytes
00139 
00140   bmpImageoffset = read32(dmlogo+pos);
00141   pos += 4;
00142 
00143   // read DIB header
00144   headerSize = read32(dmlogo+pos);
00145   pos +=4;
00146   bmpWidth = read32(dmlogo+pos);
00147   pos += 4;
00148   bmpHeight = read32(dmlogo+pos);
00149   pos += 4;
00150 
00151   log("Image size:        %d\r\n", fileSize);
00152   log("Image offset:      %d\r\n", bmpImageoffset);
00153   log("Header size:       %d\r\n", headerSize);
00154   log("Image width:       %d\r\n", bmpWidth );
00155   log("Image height:      %d\r\n", bmpHeight );
00156 
00157   if (read16(dmlogo+pos) != 1){
00158     // number of color planes must be 1
00159     return false;
00160   }
00161   pos += 2;
00162 
00163   bmpDepth = read16(dmlogo+pos);
00164   pos +=2;
00165   log("Bitdepth:          %d\r\n", bmpDepth);
00166 
00167   if (read16(dmlogo+pos) != 0) {
00168     // compression not supported!
00169     return false;
00170   }
00171   pos += 2; // Should really be 2??
00172 
00173   return true;
00174 }
00175 
00176 /******************************************************************************
00177  * Main
00178  *****************************************************************************/
00179 
00180 int main() {
00181   log("init tft \r\n");
00182   tft.init();
00183 
00184   tft.drawString(0,32,"www.");
00185   tft.drawString(12,48,"displaymodule");
00186   tft.drawString(88,64,".com");
00187 
00188   tft.drawRectangle(20,85,40,105,GREEN);
00189   tft.drawCircle(60,95,10,BLUE);
00190   tft.drawTriangle(90,85, 80,105, 100,105, RED);
00191 
00192   if (! bmpReadHeader()) {
00193     log("bad bmp\r\n");
00194     return -1;
00195   }
00196 
00197   drawBmpFromFlash(0, 0);
00198   drawBmpFromFlash(0, 130);
00199 
00200   while(1) {
00201   }
00202 }