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 /*********************************************************
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VIZIC EXPRESSLY DISCLAIM ANY WARRANTY OF ANY KIND, WHETHER 
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO, THE IMPLIED 
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ANY CLAIMS BY THIRD PARTIES (INCLUDING BUT NOT LIMITED TO 
ANY DEFENCE THEREOF), ANY CLAIMS FOR INDEMNITY OR CONTRIBUTION,
OR OTHER SIMILAR COSTS.
*********************************************************/

#include "mbed.h"
#include "MINISMARTGPU.h"
        
// MINI SMART GPU DEFAULT BAUD RATE: 9600bps
//It shoud be used like this : MINISMARTGPU lcd(p13,p14,p15); for serial communication with MINISMARTGPU
MINISMARTGPU::MINISMARTGPU(PinName TXPin, PinName RXPin, PinName resetPin): _serialMINISMARTGPU(TXPin,RXPin), _resetPin(resetPin){    
    init();
}

/********** high level commands, for the user! */
void MINISMARTGPU::init(){         //configure the mbed for MINISMARTGPU board    
    _serialMINISMARTGPU.baud(9600);
    _resetPin=1;               //set the pin to 3.3v to avoid reset 
}
 
void MINISMARTGPU::reset(){        //Reset the MINISMARTGPU board
    _resetPin=0;               //set the pin to GND to reset 
    wait_ms(500);
    _resetPin=1;               //set the pin to 3.3v to end reset
    wait_ms(500);    

}

unsigned char MINISMARTGPU::start(){           //Init the MINISMARTGPU
  wait_ms(500); 
  _serialMINISMARTGPU.putc('U');  
  wait_ms(1500);
  return _serialMINISMARTGPU.getc();

}

unsigned char MINISMARTGPU::erase(){          //Erase the MINISMARTGPU screen
  _serialMINISMARTGPU.putc('E');  
  return _serialMINISMARTGPU.getc();

}

unsigned char MINISMARTGPU::sleep(unsigned char mode){       //Send MINISMARTGPU to sleep mode
  _serialMINISMARTGPU.putc('Z'); 
  _serialMINISMARTGPU.putc(mode);
  return _serialMINISMARTGPU.getc();

}

unsigned char MINISMARTGPU::orientation(unsigned char side){       //Change display orientation
  _serialMINISMARTGPU.putc('O'); 
  _serialMINISMARTGPU.putc(side);
  return _serialMINISMARTGPU.getc();

}

unsigned char MINISMARTGPU::bright(unsigned char val){       //Change display brightness
  _serialMINISMARTGPU.putc('V'); 
  _serialMINISMARTGPU.putc(val); 
  return _serialMINISMARTGPU.getc();

}

unsigned char MINISMARTGPU::baudChange(unsigned long val){       //Change baud rate of mbed and SMARTGPU board
  unsigned char aux;

  switch(val){
    case 9600:
      aux=0;
    break;
    case 19200:
      aux=1;
    break;
    case 57600:
      aux=2;
    break;
    case 115200:
      aux=3;
    break;
    case 256000:
      aux=4;
    break;    
    case 500000:
      aux=5;
    break;
    case 1000000:
      aux=6;
    break;
    case 2000000:
      aux=7;
    break;
    default:
      return 'F';

  } 
  _serialMINISMARTGPU.putc('X');
  _serialMINISMARTGPU.putc(aux);  
  aux=_serialMINISMARTGPU.getc();

  if(aux=='O'){
    wait_ms(150);
    _serialMINISMARTGPU.baud(val);
    wait_ms(200);
    return _serialMINISMARTGPU.getc();
  }else{
    return aux;
  }
}

unsigned char MINISMARTGPU::setScreenBackground(int colour){       //Change the default screen background colour for erase function
  _serialMINISMARTGPU.putc('B'); 
  _serialMINISMARTGPU.putc(colour>>8);
  _serialMINISMARTGPU.putc(colour);  
  return _serialMINISMARTGPU.getc();
  
}

unsigned char MINISMARTGPU::setTextBackground(int colour){       //Set the default text background colour for letters and strings
  _serialMINISMARTGPU.putc('A'); 
  _serialMINISMARTGPU.putc(colour>>8);
  _serialMINISMARTGPU.putc(colour);  
  return _serialMINISMARTGPU.getc();

}

unsigned char MINISMARTGPU::memoryRead(unsigned char x1, unsigned char y1, unsigned char x2, unsigned char y2, char buffer[]){ //Read the internal memory of the MINISMARTGPU, This command returns 24bit pixels (3 bytes)
  unsigned int i,j,k=0;
  
  _serialMINISMARTGPU.putc('M'); 
  _serialMINISMARTGPU.putc(x1);
  _serialMINISMARTGPU.putc(y1);
  _serialMINISMARTGPU.putc(x2);
  _serialMINISMARTGPU.putc(y2); 

  //receive all the pixels
  for(j=0;j<=(y2-y1);j++){
    for(i=0;i<=(x2-x1);i++){
        buffer[k]=_serialMINISMARTGPU.getc(); //Red
        k++;
        buffer[k]=_serialMINISMARTGPU.getc(); //Green
        k++;
        buffer[k]=_serialMINISMARTGPU.getc(); //Blue
        k++;
    }    
  } 
  return _serialMINISMARTGPU.getc();  

}

unsigned char MINISMARTGPU::putPixel(unsigned char x, unsigned char y, int colour){       //Draw a pixel on the screen
  _serialMINISMARTGPU.putc('P'); 
  _serialMINISMARTGPU.putc(x);
  _serialMINISMARTGPU.putc(y);
  _serialMINISMARTGPU.putc(colour>>8);
  _serialMINISMARTGPU.putc(colour);
  return _serialMINISMARTGPU.getc();

}

unsigned char MINISMARTGPU::drawLine(unsigned char x1, unsigned char y1, unsigned char x2, unsigned char y2, int colour){       //Draw a line on the screen
  _serialMINISMARTGPU.putc('L'); 
  _serialMINISMARTGPU.putc(x1);
  _serialMINISMARTGPU.putc(y1);
  _serialMINISMARTGPU.putc(x2);
  _serialMINISMARTGPU.putc(y2);  
  _serialMINISMARTGPU.putc(colour>>8);
  _serialMINISMARTGPU.putc(colour);
  return _serialMINISMARTGPU.getc();

}

unsigned char MINISMARTGPU::drawRectangle(unsigned char x1, unsigned char y1, unsigned char x2, unsigned char y2, int colour, unsigned char fill){       //Draw a rectangle on the screen
  _serialMINISMARTGPU.putc('R');  
  _serialMINISMARTGPU.putc(x1);
  _serialMINISMARTGPU.putc(y1);
  _serialMINISMARTGPU.putc(x2);
  _serialMINISMARTGPU.putc(y2);  
  _serialMINISMARTGPU.putc(colour>>8);
  _serialMINISMARTGPU.putc(colour);
  _serialMINISMARTGPU.putc(fill);   
  return _serialMINISMARTGPU.getc();

}

unsigned char MINISMARTGPU::drawTriangle(unsigned char x1, unsigned char y1, unsigned char x2, unsigned char y2, unsigned char x3, unsigned char y3, int colour, unsigned char fill){       //Draw a triangle on the screen
  _serialMINISMARTGPU.putc('T'); 
  _serialMINISMARTGPU.putc(x1);
  _serialMINISMARTGPU.putc(y1);
  _serialMINISMARTGPU.putc(x2);
  _serialMINISMARTGPU.putc(y2);  
  _serialMINISMARTGPU.putc(x3);
  _serialMINISMARTGPU.putc(y3);    
  _serialMINISMARTGPU.putc(colour>>8);
  _serialMINISMARTGPU.putc(colour);
  _serialMINISMARTGPU.putc(fill);   
  return _serialMINISMARTGPU.getc();

}

unsigned char MINISMARTGPU::drawCircle(unsigned char x, unsigned char y, unsigned char radius, int colour, unsigned char fill){       //Draw a circle on the screen
  _serialMINISMARTGPU.putc('C'); 
  _serialMINISMARTGPU.putc(x);
  _serialMINISMARTGPU.putc(y);
  _serialMINISMARTGPU.putc(radius);
  _serialMINISMARTGPU.putc(colour>>8);
  _serialMINISMARTGPU.putc(colour);
  _serialMINISMARTGPU.putc(fill);   
  return _serialMINISMARTGPU.getc();
  
}

unsigned char MINISMARTGPU::putLetter(unsigned char x, unsigned char y, int colour, unsigned char font, unsigned char fill, unsigned char letter){       //Draw a letter on the screen
  _serialMINISMARTGPU.putc('W'); 
  _serialMINISMARTGPU.putc(x);
  _serialMINISMARTGPU.putc(y);
  _serialMINISMARTGPU.putc(colour>>8);
  _serialMINISMARTGPU.putc(colour);
  _serialMINISMARTGPU.putc(font); 
  _serialMINISMARTGPU.putc(fill); 
  _serialMINISMARTGPU.putc(letter);  
  return _serialMINISMARTGPU.getc();

}

unsigned char MINISMARTGPU::string(unsigned char x1, unsigned char y1, unsigned char x2, unsigned char y2, int colour, unsigned char font, unsigned char fill, char text[]){       //Draw a string on the screen
  int counter=0;
  
  _serialMINISMARTGPU.putc('S'); 
  _serialMINISMARTGPU.putc('N'); //not SD
  _serialMINISMARTGPU.putc(x1);
  _serialMINISMARTGPU.putc(y1);
  _serialMINISMARTGPU.putc(x2);
  _serialMINISMARTGPU.putc(y2);  
  _serialMINISMARTGPU.putc(colour>>8);
  _serialMINISMARTGPU.putc(colour);
  _serialMINISMARTGPU.putc(font); 
  _serialMINISMARTGPU.putc(fill); 
  while(1){
    _serialMINISMARTGPU.putc(text[counter]);
    if(text[counter]==0x00){
      break;
    }    
    counter++;
  } 
  return _serialMINISMARTGPU.getc();

}

unsigned char MINISMARTGPU::stringSD(unsigned char x1, unsigned char y1, unsigned char x2, unsigned char y2, int colour, unsigned char font, unsigned char fill, int BS, int BR, char name[]){       //Draw a String from a text file contained on the micro SD card on the screen
  unsigned char counter=0;
  
  _serialMINISMARTGPU.putc('S'); 
  _serialMINISMARTGPU.putc('S'); //from SD
  _serialMINISMARTGPU.putc(x1);
  _serialMINISMARTGPU.putc(y1);
  _serialMINISMARTGPU.putc(x2);
  _serialMINISMARTGPU.putc(y2);  
  _serialMINISMARTGPU.putc(colour>>8);
  _serialMINISMARTGPU.putc(colour);
  _serialMINISMARTGPU.putc(font); 
  _serialMINISMARTGPU.putc(fill); 
  _serialMINISMARTGPU.putc(BS>>8);
  _serialMINISMARTGPU.putc(BS);  
  _serialMINISMARTGPU.putc(BR>>8);
  _serialMINISMARTGPU.putc(BR);  
  while(1){
    _serialMINISMARTGPU.putc(name[counter]);
    if(name[counter]==0x00){
      break;
    }    
    counter++;
  }
  return _serialMINISMARTGPU.getc();

}

unsigned char MINISMARTGPU::icon(unsigned char x1, unsigned char y1, unsigned char x2, unsigned char y2, char icon[]){            //Send and image or icon pixel by pixel to MINISMARTGPU, 16bit(2 bytes) each pixel RGB565
  unsigned int i,j,k=0; 
  
  _serialMINISMARTGPU.putc('I'); 
  _serialMINISMARTGPU.putc('N'); //not SD
  _serialMINISMARTGPU.putc(x1);
  _serialMINISMARTGPU.putc(y1);
  _serialMINISMARTGPU.putc(x2);
  _serialMINISMARTGPU.putc(y2);
  
  //Send icon buffer pixel by pixel
  for(j=0;j<=(y2-y1);j++){
    for(i=0;i<=(x2-x1);i++){
        _serialMINISMARTGPU.putc(icon[k]);
        k++;
    }
  } 
  return _serialMINISMARTGPU.getc();  

}

unsigned char MINISMARTGPU::imageSD(unsigned char x, unsigned char y, char name[]){        //Draw an Image contained on the micro SD card on the screen, top left corner coordinates
  unsigned char counter=0;
  
  _serialMINISMARTGPU.putc('I'); 
  _serialMINISMARTGPU.putc('S'); //from SD
  _serialMINISMARTGPU.putc(x>>8); 
  _serialMINISMARTGPU.putc(x);
  _serialMINISMARTGPU.putc(y>>8);
  _serialMINISMARTGPU.putc(y);
  
  while(1){
    _serialMINISMARTGPU.putc(name[counter]);
    if(name[counter]==0x00){
      break;
    }    
    counter++;
  }
  return _serialMINISMARTGPU.getc();

}

/****************************************************************/
//Those next functions return file execution status instead of ACK 'O' or NAK 'F'
/****************************************************************/

unsigned char MINISMARTGPU::SDfopen(unsigned char mode, char name[]){
  unsigned char counter=0;
  unsigned char aux = 0;
  
  wait_ms(1);
  _serialMINISMARTGPU.putc('F'); //memory card file management
  _serialMINISMARTGPU.putc('O'); //file open
  _serialMINISMARTGPU.putc(mode);
  while(1){
	_serialMINISMARTGPU.putc(name[counter]);
    if(name[counter]==0x00){
      break;
	}	
	counter++;
  }
  aux= _serialMINISMARTGPU.getc();   //Get FAT result
  _serialMINISMARTGPU.getc();        //Discard 'O' or 'F'
  return aux;                        //Return FAT result
}

unsigned char MINISMARTGPU::SDfclose(){
  unsigned char aux = 0;

  wait_ms(5);
  _serialMINISMARTGPU.putc('F'); //memory card file management
  _serialMINISMARTGPU.putc('C'); //file close
  
  aux= _serialMINISMARTGPU.getc();   //Get FAT result
  _serialMINISMARTGPU.getc();        //Discard 'O' or 'F'
  return aux;                        //Return FAT result
}

unsigned char MINISMARTGPU::SDfsync(){
  unsigned char aux = 0;
  
  _serialMINISMARTGPU.putc('F'); //memory card file management
  _serialMINISMARTGPU.putc('S'); //file sync

  aux= _serialMINISMARTGPU.getc();   //Get FAT result
  _serialMINISMARTGPU.getc();        //Discard 'O' or 'F'
  return aux;                        //Return FAT result
}

unsigned char MINISMARTGPU::SDfpointer(unsigned long position){
  unsigned char aux = 0;
  
  _serialMINISMARTGPU.putc('F'); //memory card file management
  _serialMINISMARTGPU.putc('P'); //file sync
  _serialMINISMARTGPU.putc(position>>24);
  _serialMINISMARTGPU.putc(position>>16);
  _serialMINISMARTGPU.putc(position>>8);
  _serialMINISMARTGPU.putc(position);
  
  aux= _serialMINISMARTGPU.getc();   //Get FAT result
  _serialMINISMARTGPU.getc();        //Discard 'O' or 'F'
  return aux;                        //Return FAT result 
}	

unsigned char MINISMARTGPU::SDfread(unsigned int BTR, char buffer[], unsigned int *SRB){ //Bytes to Read, Read Buffer, Succesfully Readed Bytes
  unsigned char aux = 0;
  unsigned int x=0, sr=0;

  _serialMINISMARTGPU.putc('F'); //memory card file management
  _serialMINISMARTGPU.putc('R'); //file read
  _serialMINISMARTGPU.putc(BTR>>8);
  _serialMINISMARTGPU.putc(BTR);  
  for(x=0;x<BTR;x++){
	buffer[x]=_serialMINISMARTGPU.getc();
  }
  sr=_serialMINISMARTGPU.getc();
  sr=sr<<8;
  sr|=_serialMINISMARTGPU.getc();
 
  aux= _serialMINISMARTGPU.getc();   //Get FAT result
  _serialMINISMARTGPU.getc();        //Discard 'O' or 'F'
  *SRB = sr;
  return aux;                        //Return FAT result
}	

unsigned char MINISMARTGPU::SDfwrite(unsigned int BTW, char buffer[], unsigned int *SWB){ //Bytes to Write, Write Buffer, Succesfully Written Bytes
  unsigned char aux = 0;
  unsigned int x=0, sw=0;
  
  wait_ms(1);
  if(BTW>512){       //Mini SmartGPU accept to write more than 512 bytes, however this is not recommended, remove this IF for fully write support
	aux = 19;        //Invalid Parameter == 19
  }else{
	_serialMINISMARTGPU.putc('F'); //memory card file management
	_serialMINISMARTGPU.putc('W'); //file write
	_serialMINISMARTGPU.putc(BTW>>8);
	_serialMINISMARTGPU.putc(BTW);    
	for(x=0;x<BTW;x++){
		_serialMINISMARTGPU.putc(buffer[x]);
	}
	sw=_serialMINISMARTGPU.getc();
	sw=sw<<8;
	sw|=_serialMINISMARTGPU.getc();
 
	aux= _serialMINISMARTGPU.getc();   //Get FAT result
	_serialMINISMARTGPU.getc();        //Discard 'O' or 'F'
	*SWB = sw;  
  }
  return aux;           //Return FAT result   
}