Diff: main.cpp

Revision:

4:05cb9a1b60ca

Parent:

3:6ab30c065d39

--- a/main.cpp	Sun Nov 10 22:34:29 2013 +0000
+++ b/main.cpp	Tue Sep 22 11:04:06 2015 +0000
@@ -1,40 +1,122 @@
 #include "mbed.h"
 #include "EaEpaper.h"
-#include "Arial28x28.h"
-#include "Arial12x12.h"
-#include "font_big.h"
+#include "Arial37x36.h"
 #include "graphics.h"
 
-EaEpaper epaper(PTD7,            // PWR_CTRL
-                PTD6,            // BORDER
-                PTE31,           // DISCHARGE
-                PTA17,           // RESET_DISP
-                PTA16,           // BUSY
-                PTC17,           // SSEL
-                PTD4,            // PWM
-                PTD2,PTD3,PTD1,  // MOSI,MISO,SCLK
-                PTE0,PTE1);      // SDA,SDL 
- 
+#define epaper_width 264
+#define epaper_hight 176
+#define line_hight   40
+#define text_field   240
+#define ASCII_offset 32
+
+int LineWrap(char* buff);
+char* BluetoothRecive(void);
+
+char line[4][40];
+int  indent[4];
+
+EaEpaper epaper(p19,           // PWR_CTRL
+                p20,           // BORDER
+                p11,           // DISCHARGE
+                p12,           // RESET_DISP
+                p13,           // BUSY
+                p8 ,           // SSEL
+                p26,           // PWM
+                p5,p6,p7,      // MOSI,MISO,SCLK
+                p28,p27);      // SDA,SCL 
+                
+DigitalOut  Flash_CS(p25);     //Flash Select
+DigitalOut Screen_CS(p8 );     //Screen Select
+DigitalOut led      (p23);     //On board LED
+
+Serial Bluetooth(p9, p10);     // tx, rx
+Serial Terminal (USBTX, USBRX);// tx, rx
+
 int main() {
+    int n, lineNumber;
+    Flash_CS =1;
+    Screen_CS=0;
+    led      =1;
+    Bluetooth.baud(115200);
+    Terminal .baud(115200);
+    
+    epaper.cls();                   //Display the logo
+    epaper.print_bm(bitmLogo,5,30);
+    epaper.write_disp(); 
+    
+    while(1){
+        lineNumber=LineWrap(BluetoothRecive());      //Wait and recive a string. Word wrap the string so that it fits to the screen
+        epaper.cls();                                //Clear screen buffer
+        epaper.set_font((unsigned char*) Arial37x36);//Set font
+        for(n=0;n<lineNumber;n++){
+            epaper.locate(indent[n], (epaper_hight-line_hight*(lineNumber-n*2))/2);
+            epaper.printf(line[n]);                  //Write to screen buffer
+        }
+        epaper.write_disp();                         //Display screen buffer
+    }
+}
 
-    epaper.cls();
-    epaper.set_font((unsigned char*) Arial28x28);  // select the font
-    epaper.locate(5,20);
-    epaper.printf("Hello Mbed");
-    epaper.rect(3,15,150,50,1);
-     
-    epaper.set_font((unsigned char*) Arial12x12);
-    epaper.locate(5,60);
-    epaper.printf("small Font");
-    epaper.set_font((unsigned char*) Neu42x35);
-    epaper.locate(5,70);
-    epaper.printf("big Font");
+char* BluetoothRecive(void){
+    int n=0;
+    char buff[200];
+    while(1){  
+        while(!Bluetooth.readable()){} //Waits for char     
+        buff[n]=Bluetooth.getc();      //Saves char to array
+        if(buff[n]==0){                //Detects end of string
+            break;
+        }
+        n++; 
+    }
+    return buff;
+}
+
+int LineWrap(char* buff){
+    int Old_Pix_Length, Pix_Length, Old_Char_Length, Char_Length, end_flag, lineNumber, words, wordCount, Offset;
+    end_flag=0;       //used for an end of string case.
+    lineNumber=0;
+    Offset=0;
+    
+    while(!end_flag && lineNumber<4){              //Loop for 4 lines or untill the end of string
     
-    epaper.write_disp(); // update screen
+        //===================================================Find the number of words that can fit on a line==================================================
+        words     =0;
+        Pix_Length=0;
+        while(Pix_Length<text_field && !end_flag){ //check the size of strings with increasing word lengths. When the size is larger than the screen then stop
+            words++;
+            Old_Pix_Length=Pix_Length;             //Save privious values of Pix and Char
+            Old_Char_Length=Char_Length;
+            Pix_Length =0;
+            wordCount  =0;
+            Char_Length=0;
+            //----------------Find the length of a string with a number of words----------------
+            while(wordCount<words && !end_flag){   
+                if(buff[Offset+Char_Length]==0){         //Handle with an end of string case
+                    if(Pix_Length<text_field){           //Ignore the end of string case if the string is too big to fit on the screen.
+                        Old_Pix_Length=Pix_Length;       //Update the Pix and Char lengths
+                        Old_Char_Length=Char_Length+1;
+                        end_flag=1;                      //Set flag
+                    }
+                }else{                                   //If its not the end of the string, add on the size of the current char and copy it to the "line" array
+                    Pix_Length+=Arial37x36Size[buff[Offset+Char_Length]-ASCII_offset];
+                    line[lineNumber][Char_Length]=buff[Offset+Char_Length];
+                }
+            
+                if(buff[Offset+Char_Length]==' '){       //A SPACE indicates the end of a word
+                    wordCount++;
+                }
+                Char_Length++;
+            }
+            Pix_Length-=Arial37x36Size[' '-ASCII_offset];//Remove the last SPACE from the string length
+            //----------------------------------------------------------------------------------
+        }
+        //====================================================================================================================================================
+        
+        line[lineNumber][Old_Char_Length-1]='\0';  //Add a NULL char to the end of string
+        indent[lineNumber]=(epaper_width-Old_Pix_Length)/2; //Indent so that the string is in the middle of the screen
+        
+        Offset+=Old_Char_Length;                   //Increment the offset so that the next line continues from the previous line
+        lineNumber++;
+    }
     
-    wait(5);
-    epaper.fillcircle(180,30,22,1);
-    epaper.circle(160,150,20,1);
-    epaper.write_disp(); // update screen
-   
-}
+    return lineNumber;
+}
\ No newline at end of file