![](/media/cache/group/default_image.jpg.50x50_q85.jpg)
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Dependencies: BurstSPI EaEpaper mbed
Fork of epaper_mbed_130411_KL25Z by
main.cpp
- Committer:
- Jamestom999
- Date:
- 2015-09-22
- Revision:
- 4:05cb9a1b60ca
- Parent:
- 3:6ab30c065d39
File content as of revision 4:05cb9a1b60ca:
#include "mbed.h" #include "EaEpaper.h" #include "Arial37x36.h" #include "graphics.h" #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 } } 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 //===================================================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++; } return lineNumber; }