//----------------------------------------------------------------------------
// C main line
//----------------------------------------------------------------------------

#include <m8c.h>        // part specific constants and macros
#include "PSoCAPI.h"    // PSoC API definitions for all User Modules
#include "stdlib.h"


int MAXC=0;
int TEMPC=500;
char degC[]="500";
char degF[]="932";
int TEMPF=932;



void main()
{
	int w,z;
	int KeyRead,KeyBuffer;
	int x,buffer;
	float temperature=0;
	float temperature2=0;
	int count=0;
	int stop=1;
	int CycleBuffer;
	int base=1;
	int InputADC;
	int InputADC2;
	char lcd_Reading[8];
	char lcd_Setting[8];
	
	
   PGA_1_SetGain(PGA_1_G1_00);  
   PGA_1_Start(PGA_1_LOWPOWER);  
	DAC9_1_Start(DAC9_1_FULLPOWER);
	
   LCD_1_Start();                  // Initialize LCD  
    M8C_EnableGInt;                       // Enable Global Interrupts 

AboveTop:
	DAC9_1_WriteBlind(0); //set output to 0V
   ADCINC12_1_Start(ADCINC12_1_LOWPOWER);   // Apply power to the SC Block  
   ADCINC12_1_GetSamples(0);               // Have ADC run continuously 
				LCD_1_Control(LCD_1_DISP_CLEAR_HOME);
				LCD_1_Position(0,0);            			 
   				LCD_1_PrCString("MAX Limit");
   				
   	LCD_1_Position(0,10); 
   				if (base==0)
   					{
   						MAXC=TEMPF;
   						LCD_1_PrString(degF);
   						LCD_1_Position(0,14);
   						LCD_1_PrCString("F");
   						 
   					}else 
   						{
   							MAXC=TEMPC;
   							LCD_1_PrString(degC);
   							LCD_1_Position(0,14);
   							LCD_1_PrCString("C");
   							
   						}
   for(;;){ 
		Top:

		KeyRead=PRT1DR;				//read for keypress
		
      while(ADCINC12_1_fIsDataAvailable() == 0);   // Loop until value ready  
      ADCINC12_1_ClearFlag();                      // Clear ADC flag  

      x=ADCINC12_1_iGetData();                 // Get ADC result 


		if (InputADC>=temperature)		// Set up autostop and initial condition
    	{
    		
    				DAC9_1_WriteBlind(0); //output 0V
    		
    	}
    	
    	if (stop==0)					// loop for auto restart in start condition
    	{
    			
    			if (CycleBuffer<temperature)
    			{
    				DAC9_1_WriteBlind(510); //output 5V
    			}
    	}
    	
    	
		if (x==buffer) // check for valid ADC reading
			{
				
				
				InputADC=(x*0.5208)-12;// correction for probe resistance.
				if (base==0)
					{
						InputADC=(9.0/5.0*InputADC)+32;
				}
				
				
			if (InputADC <= 99)    // set up display to increment 10's and 100's to left
				{
					lcd_Reading[0] = ' ';
					w=1;
					if (InputADC <=9)
					{
						lcd_Reading[1]=' ';
						w=2;
					}
				}else w=0; 
			
			InputADC2 = abs(InputADC); // absolute value
			

// convert int into a base 10 null terminated ASCII string 
			itoa(&lcd_Reading[w], (unsigned int)InputADC2, 10); 

			if (temperature <= 99)   // set up input to read correctly
				{
					lcd_Setting[0] = ' ';
					z=1;
					if (temperature <=9)
					{
						lcd_Setting[1]=' ';
						z=2;
					}
				}else z=0;
				
			temperature2 = abs(temperature); 

// converts int into a base 10 null terminated ASCII string 
				itoa(&lcd_Setting[z], (unsigned int)temperature2, 10); 
				
				
			CycleBuffer=InputADC+2; 			//Set Restart lower limit
			LCD_1_Position(1,0);              
  				LCD_1_PrString(lcd_Reading);    // continuous temperature display
  				LCD_1_Position(1,5);
  				LCD_1_PrCString("SET->");
  				LCD_1_Position(1,10);
  				LCD_1_PrString(lcd_Setting);

   			// set key repeat function for up down keys only
  			if (KeyRead!=0x00) //0x03 when programmer attached
  				{
  					count++;
  					if (count>15)
  						if (KeyRead==0x80||KeyRead==0x40)
  							goto HERE;
  				}else count=0;	
  				
  			if (KeyBuffer==KeyRead) // duplicate key ignore
  			goto Top;
  			   			
  				HERE:	
  		//Programmer will add 0X03 to all cases when attached
  				switch (KeyRead){
  					case (0x80): // increment temperature
  						if(count>15)
  							{temperature=temperature+10;
  								count=0;
  								if (temperature >=MAXC)
  									{goto HIGHlimit;
  									}
  								goto Top;
  							}
  						KeyBuffer=KeyRead;
  					
  						if (temperature >=MAXC)
  								{goto HIGHlimit;
  								}
  						goto TempUp;
  					break;
  					case (0x40):  // decrement temperature
  						if(count>15)
  							{temperature=temperature-10;
  								count=0;
  								if (temperature <=0)
  									{goto LOWlimit;
  									}
  								goto Top;
  							}
  							KeyBuffer=KeyRead;
  						
  							if (temperature <=0)
  								{goto LOWlimit;
  								}
  						goto TempDown;
  					break;
  					case (0x20): // clear
  						KeyBuffer=KeyRead;
  						goto Clear;
  					break;
  					case (0X10): //start
  						KeyBuffer=KeyRead;
  						goto Start;
  					break;
  					case (0x08): //stop
  						KeyBuffer=KeyRead;
  						goto Stop;
  					break;
  					case (0x04): //base change
  						 KeyBuffer=KeyRead;
  						 if (base==1)
  						 {	//Change to F
  						 	base=0;
  							goto Base;
  						 }
  						 if (base==0)
  						 {	//Change to C
  						 	base=1;
  						 }
   						 
  						goto Base;
  					break;
  					default:
  						KeyBuffer=KeyRead;
  					break;
  					}        		
								

  			}

  		buffer=x; // ADC validation buffer
			
    goto Top;
   TempUp:
   	temperature++; // increment setting
   goto Top;
   TempDown:
   	temperature--; // decrement setting
    goto Top;
  Clear:
   	temperature=0;
   	count =0;
   	LCD_1_Position(1,10);
  		LCD_1_PrString(lcd_Setting);
    goto AboveTop;
  Stop:
   	LCD_1_Control(LCD_1_DISP_CLEAR_HOME);
   	
   	LCD_1_Position(0,0);            			 
  		LCD_1_PrCString("STOPPED at");
  		LCD_1_PrString(lcd_Reading); 
   		
   	DAC9_1_WriteBlind(0);
   	stop=1;
   	if (base==0)
  					{
  						MAXC=TEMPF;
  						LCD_1_Position(0,15);
  						LCD_1_PrCString("F");
  						 
  					}else 
  						{
  							MAXC=TEMPC;
  							LCD_1_Position(0,15);
  							LCD_1_PrCString("C");
   							
  						}
    goto Top;
  Start:
   		
  		LCD_1_Control(LCD_1_DISP_CLEAR_HOME);
   	
  				LCD_1_Position(0,0);            			 
  				LCD_1_PrCString("HEATING to ");
  				LCD_1_PrString(lcd_Setting);
   		
   	if (InputADC<=temperature)
   	{	
    	
   		DAC9_1_WriteBlind(510);
   	}else 
   		{
   			DAC9_1_WriteBlind(0);
   		
  			}
    	
   	stop=0;
   	if (base==0)
  					{
  						MAXC=TEMPF;
  						LCD_1_Position(0,15);
  						LCD_1_PrCString("F");
   						 
  					}else 
  						{
  							MAXC=TEMPC;
  							LCD_1_Position(0,15);
  							LCD_1_PrCString("C");
  							
  						}
    goto Top;
   LOWlimit:
   	temperature=0;
   	goto Top;
   HIGHlimit:
   	temperature=MAXC;
   	goto Top;
   Base:
   
   	if (base==1)//Degrees F to Degrees C
   	{
   		if (temperature!=0)
   		{
   			temperature2=temperature;
   			temperature=(5.0/9.0*(temperature2-32)); // convert F to C
   		}
   		goto BaseBottom;
   	}else
   	
   		if (temperature!=0)
   		{
   			temperature2=temperature;
   			temperature=(9.0/5.0*temperature2)+32; // convert C to F
   		}
	
    	
   	BaseBottom:
   		if (stop==0)
   		 {
   		 	goto Top;
   		 }else goto AboveTop;
   	
   }

}