Revision 44:cd9bc22f656d, committed 2017-05-03

Comitter:

JackCripps

Date:

Wed May 03 12:52:37 2017 +0000

Parent:

43:c2598020fcac

Commit message:

Added getBrightness function and flashing string function

Changed in this revision

--- a/Bitmap.cpp	Tue Mar 21 11:46:14 2017 +0000
+++ b/Bitmap.cpp	Wed May 03 12:52:37 2017 +0000
@@ -90,7 +90,11 @@
             // Find the required value of the pixel at the given location within
             // the bitmap data and then write it to the LCD screen
             int pixel = get_pixel(bitmap_row, bitmap_col);
-            lcd.setPixel(screen_col, screen_row, pixel);
+            // Since 2 in my bitmaps dictates transaprent pixel, do not set pixel
+            // on lcd if the pixel value is 2
+            if (pixel != 2) {
+                lcd.setPixel(screen_col, screen_row, pixel);
+            }
         }
     }
 }
\ No newline at end of file

--- a/Bitmap.h	Tue Mar 21 11:46:14 2017 +0000
+++ b/Bitmap.h	Wed May 03 12:52:37 2017 +0000
@@ -10,9 +10,11 @@
  * @brief  A black & white bitmap that can be rendered on an N5110 screen
  * @author Alex Valavanis <a.valavanis@leeds.ac.uk>
  * 
+ * @detail Slight modification by Jack Cripps to deal with transparency issue
+ *
  * @code
   // First declare the pixel map data using '1' for black,
-  // or '0' for white pixels
+  // or '0' for white pixels, or '2' for transparent
   static int sprite_data[] = {
     0,0,1,0,0,
     0,1,1,1,0,
@@ -40,7 +42,7 @@
 private:
     /**
      * @brief The contents of the drawing, with pixels stored in row-major order
-     * @details '1' represents a black pixel; '0' represents white
+     * @details '1' represents a black pixel; '0' represents white, '2' transparent
      */
     std::vector<int> _contents;
     

--- a/N5110.cpp	Tue Mar 21 11:46:14 2017 +0000
+++ b/N5110.cpp	Wed May 03 12:52:37 2017 +0000
@@ -75,6 +75,10 @@
     clearRAM();      // RAM is undefined at power-up so clear
     clear();   // clear buffer
     setBrightness(0.5);
+    
+    // Initialising the frame count variable to 0
+    _frameCount = 0;
+    _textTransparency = 0;
 }
 
 // sets normal video mode (black on white)
@@ -132,6 +136,13 @@
     _led->write(brightness);
 }
 
+// function to get led brightness
+float N5110::getBrightness()
+{
+    // Returns value between 0.0 and 1.0;
+    return _led->read();  
+}
+
 
 // pulse the active low reset line
 void N5110::reset()
@@ -302,6 +313,24 @@
     }
 }
 
+void N5110::printFlashingString(const char          *str,
+                                unsigned int const  x,
+                                unsigned int const  y,
+                                unsigned int const  framesBeforeUpdate)
+{
+    if (++_frameCount == framesBeforeUpdate)
+    {
+        _frameCount = 0;
+        _textTransparency = !_textTransparency;
+        
+    }
+    
+    if (!_textTransparency)
+    {
+        this->printString(str, x, y);
+    }
+}
+
 // function to clear the screen buffer
 void N5110::clear()
 {

--- a/N5110.h	Tue Mar 21 11:46:14 2017 +0000
+++ b/N5110.h	Wed May 03 12:52:37 2017 +0000
@@ -294,6 +294,13 @@
     *   @param brightness - float in range 0.0 to 1.0
     */
     void setBrightness(float const brightness);
+    
+    /** get Brightness
+    *
+    * Gets brightness of LED backlight
+    * @returns float in range 0.0 to 1.0
+    */
+    float getBrightness();
 
     /** Print String
     *
@@ -304,6 +311,18 @@
     void printString(char const         *str,
                      unsigned int const  x,
                      unsigned int const  y);
+    
+    /** Print flashing string
+    * 
+    * Prints a string of characters to the string buffer. Flashes at the frame interval specified
+    * @param x the coloumn number
+    * @param y the row number
+    * @param framesBeforeUpdate number of frames before changing from nothing to text
+    */                 
+    void printFlashingString(char const         *str,
+                             unsigned int const x,
+                             unsigned int const y,
+                             unsigned int const framesBeforeUpdate);
 
     /** Print Character
     *
@@ -450,6 +469,8 @@
     void clearRAM();
     void sendCommand(unsigned char command);
     void sendData(unsigned char data);
+    int _frameCount;
+    bool _textTransparency;
 };
 
 const unsigned char font5x7[480] = {