Diff: main.cpp

Revision:

0:486bf9d63b80

Child:

1:4a281af0d8e6

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Tue May 20 15:37:27 2014 +0000
@@ -0,0 +1,195 @@
+/**********************************************************************************************
+ Copyright (c) 2014 DisplayModule. All rights reserved.
+
+ Redistribution and use of this source code, part of this source code or any compiled binary
+ based on this source code is permitted as long as the above copyright notice and following
+ disclaimer is retained.
+
+ DISCLAIMER:
+ THIS SOFTWARE IS SUPPLIED "AS IS" WITHOUT ANY WARRANTIES AND SUPPORT. DISPLAYMODULE ASSUMES
+ NO RESPONSIBILITY OR LIABILITY FOR THE USE OF THE SOFTWARE.
+ ********************************************************************************************/
+
+/******************************************************************************
+ * Includes
+ *****************************************************************************/
+
+#include "mbed.h"
+
+#include "DmTftHX8353C.h"
+#include "DmTftS6D0164.h"
+#include "DmTftIli9325.h"
+#include "DmTftIli9341.h"
+#include "DmTftSsd2119.h"
+
+/******************************************************************************
+ * Typedefs and defines
+ *****************************************************************************/
+
+//#define log(...) printf(__VA_ARGS__)
+#define log(...)
+
+/******************************************************************************
+ * Local variables
+ *****************************************************************************/
+
+//DmTftHX8353C tft;  /* DM_TFT18_101 */
+//DmTftS6D0164 tft;  /* DM_TFT22_102 */
+//DmTftIli9325 tft;  /* DM_TFT28_103 and DM_TFT24_104 */
+DmTftIli9341 tft;  /* DM_TFT28_105 */
+//DmTftSsd2119 tft;   /* DM_TFT35_107 */
+
+int bmpWidth, bmpHeight;
+uint8_t bmpImageoffset;
+
+/******************************************************************************
+ * Global variables
+ *****************************************************************************/
+
+extern uint8_t dmlogo[];
+
+/******************************************************************************
+ * Local functions
+ *****************************************************************************/
+
+// LITTLE ENDIAN!
+uint16_t read16(uint8_t *src)
+{
+  uint16_t d;
+  uint8_t b;
+  b = *src;
+  d = *(src+1);
+  d <<= 8;
+  d |= b;
+  return d;
+}
+
+// LITTLE ENDIAN!
+uint32_t read32(uint8_t *src)
+{
+  uint32_t d;
+  uint16_t b;
+
+  b = read16(src);
+  d = read16(src+2);
+  d <<= 16;
+  d |= b;
+  return d;
+}
+
+void drawBmpFromFlash(int x, int y)
+{
+  uint16_t pos = bmpImageoffset;
+
+  uint16_t p;  // pixel
+  uint8_t g, b;
+  int i, j; // line, column
+
+  for(i=bmpHeight; i>0; i--) {
+    for(j=0; j<bmpWidth; j++) {
+      b = *(dmlogo+pos++);
+      g = *(dmlogo+pos++);
+      p = *(dmlogo+pos++);
+
+      p >>= 3;
+      p <<= 6;
+
+      g >>= 2;
+      p |= g;
+      p <<= 5;
+
+      b >>= 3;
+      p |= b;
+
+      // write out the 16 bits of color
+      tft.setPixel(j, i+y, p);
+    }
+  }
+}
+
+
+int bmpReadHeader() {
+  uint32_t fileSize;
+  uint32_t headerSize;
+  uint16_t bmpDepth;
+  uint16_t pos = 0;
+  log("reading bmp header\r\n");
+  log("Magic byte is: %d \r\n", read16(dmlogo));
+
+  if (read16(dmlogo) !=0x4D42){ // read magic byte
+    log("Magic byte not found\r\n");
+    return false;
+  }
+  pos += 2;
+
+  // read file size
+  fileSize = read32(dmlogo+pos);
+  log("filesize is: %d \r\n", fileSize);
+  log("");
+  pos += 4;
+
+  pos += 4; // Skip creator bytes
+
+  bmpImageoffset = read32(dmlogo+pos);
+  pos += 4;
+
+  // read DIB header
+  headerSize = read32(dmlogo+pos);
+  pos +=4;
+  bmpWidth = read32(dmlogo+pos);
+  pos += 4;
+  bmpHeight = read32(dmlogo+pos);
+  pos += 4;
+
+  log("Image size:        %d\r\n", fileSize);
+  log("Image offset:      %d\r\n", bmpImageoffset);
+  log("Header size:       %d\r\n", headerSize);
+  log("Image width:       %d\r\n", bmpWidth );
+  log("Image height:      %d\r\n", bmpHeight );
+
+  if (read16(dmlogo+pos) != 1){
+    // number of color planes must be 1
+    return false;
+  }
+  pos += 2;
+
+  bmpDepth = read16(dmlogo+pos);
+  pos +=2;
+  log("Bitdepth:          %d\r\n", bmpDepth);
+
+  if (read16(dmlogo+pos) != 0) {
+    // compression not supported!
+    return false;
+  }
+  pos += 2; // Should really be 2??
+
+  return true;
+}
+
+/******************************************************************************
+ * Main
+ *****************************************************************************/
+
+int main() {
+  log("init tft \r\n");
+  tft.init();
+
+  tft.drawString(0,32,"www.");
+  tft.drawString(12,48,"displaymodule");
+  tft.drawString(88,64,".com");
+
+  tft.drawRectangle(20,85,40,105,GREEN);
+  tft.drawCircle(60,95,10,BLUE);
+  tft.drawTriangle(90,85, 80,105, 100,105, RED);
+
+  if (! bmpReadHeader()) {
+    log("bad bmp\r\n");
+    return -1;
+  }
+
+  drawBmpFromFlash(0, 0);
+  drawBmpFromFlash(0, 130);
+
+  while(1) {
+  }
+}