//(UNTERPROGRAMM INIT ANFANG)!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!



#include <p18cxxx.h>
#include "pic_init.h"



void pic_init (void)
{
// festlegen der Ports A-E ob Ein oder Ausgang
	TRISA = 0x00;
	TRISB = 0x01;
	TRISC = 0xc0;
	TRISD = 0x00;
	TRISE = 0x00;
// RS-485 senden


// Anfangsstatus der Ports C und D (~0x00 heißt, dass alle Ports am Pic high sind.)
	LATC = ~0x00;
	LATD = ~0x00;
// Timer0 Initalisiert (letzten 3 Bits geben das Vorteiler verhältniss an)
	T0CON = 0b00010111;

// Timer init
INTCON2bits.TMR0IP = 1;	// high priority
T0CONbits.TMR0ON=0;
INTCONbits.TMR0IE=1;
INTCONbits.TMR0IF = 0;		//setzt interuptflag von Timer0 zurück auf 0



RCONbits.IPEN = 1;            //enable priority levels
INTCONbits.GIEH = 1;          //enable interrupts



}




//(UNTERPROGRAMM INIT ENDE)!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!


//(UNTERPROGRAMM UART ANFANG)!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

#include <p18cxxx.h>
#include "pic_init.h"

/*_______________define_________________*/
#define RS485_SENDEN_RE		LATDbits.LATD0
#define RS485_SENDEN_DE		LATDbits.LATD1

void init_uart (void)
{

/*________BAUDRATE programmieren________*/
BAUDCON	 	 = 0b11000000;	
TXSTA	 	 = 0b11110001;
RCSTA	 	 = 0b11101111;

/*BAUD */
SPBRG	 	 = (unsigned int) ((((10000000.0/19200.0)/4.0))-1.0);

/*____________MAX8032 RECIVE____________*/
//           __      (RE invertiert)
RS485_SENDEN_RE = 1;
RS485_SENDEN_DE = 0;
}

//(UNTERPROGRAMM UART ENDE)!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!








#include <p18cxxx.h>
#include "pic_init.h"


/*_____________Bootloader______________*/
#pragma config OSC = HSPLL
#pragma config FCMEN = OFF 
#pragma config IESO = OFF 
#pragma config PWRT = ON
#pragma config WDT = OFF, WDTPS = 128
#pragma config CCP2MX = PORTC, PBADEN = OFF, LPT1OSC =OFF, MCLRE = OFF
#pragma config STVREN = ON, LVP = OFF, XINST = OFF, DEBUG = OFF
#pragma config CP0 = OFF, CP1 = OFF, CP2 = OFF, CP3 = OFF
#pragma config CPB = OFF, CPD = OFF
#pragma config WRT0 = OFF, WRT1 = OFF, WRT2 = OFF, WRT3 = OFF
#pragma config WRTC = ON, WRTB = OFF, WRTD = OFF
#pragma config EBTR0 = OFF, EBTR1 = OFF, EBTR2 = OFF, EBTR3 = OFF
#pragma config EBTRB = OFF

/*___________Bootloader ende____________*/



/*_______________define_________________*/
#define RS485_SENDEN_RE		LATDbits.LATD0
#define RS485_SENDEN_DE		LATDbits.LATD1

volatile int send_buf1;

/*______________Prototypen______________*/
void isr_high_priority(void);
void init_uart(void);

/*_______Initalisierung Variablen_______*/
int i;
int x;
unsigned int send_buf[9];


/*____________Hauptprogramm_____________*/
void main (void)
{
	pic_init ();
	init_uart ();
	x=PORTD;							 //PORTD mit der Variable x gleichsetzen
	for (;;)
	{

	LATDbits.LATD6=~1; 					 //Kontroll LED (Quarz schwingt)

		if(LATBbits.LATB5==0)			 //Entscheidung 5V= senden (0V= nicht senden)
			{
			send_buf1 = 0b10100110;

/*_________MAX3082 TRANSMITTING__________*/
			RS485_SENDEN_RE = 0;
			RS485_SENDEN_DE = 1;

/*___________Warte auf MAX3082___________*/
		for(i=0;i < 1000; i++);			

/*___________Senden___________*/
		for(i=0; i< 6; i++)
			{
			Nop();Nop();Nop();
			while (!PIR1bits.TXIF);
			TXREG = send_buf1;
			}

/*___________Senden ende___________*/
		Nop();Nop();Nop();
		while (!PIR1bits.TXIF);
		for(i=0; i< 2000; i++)
			{
			RS485_SENDEN_RE = 1;
			RS485_SENDEN_DE = 0;
			}

/*______________RS-485 SEND______________*/
/*			send_buf[0]=0x02;			 //START ROUTINE (STX)
			send_buf[1]=0x22;			 //Adresse des Master
			send_buf[2]=0x23;			 //Adresse des Slave
			send_buf[3]=0b00101011;	 	 //Bits Senden
			send_buf[4]=0b11010110;	     //Bits Senden 
			send_buf[5]=0b00011101;	 	 //Bits Senden
			send_buf[6]=0b00000001;		 //Checksumme High-Byte
			send_buf[7]=0b00011110;		 //Checksumme Low-Byte
			send_buf[8]=0x0d;			 //END ROUTINE (ETX)
*/
/*_____________MAX RECIEVING_____________*/
			RS485_SENDEN_RE = 1;
			RS485_SENDEN_DE = 0;
			}
		else
			{
			T0CONbits.TMR0ON=1;

				while(1)
					{
					//es passiert nichts
					}		

			}			
	}

	
}


//----------------------------------------------------------------------------
// High priority interrupt vector

#pragma code InterruptVectorHigh=0x08
#pragma interrupt isr_high_priority

void InterruptVectorHigh (void)
{
  _asm
    goto isr_high_priority //jump to interrupt routine
  _endasm
}

//----------------------------------------------------------------------------
// High priority interrupt routine

#pragma code

void isr_high_priority(void)
{
  if (INTCONbits.TMR0IF=1)
    { 
				                                    //check for TMR0 overflow
      INTCONbits.TMR0IF = 0;            //clear interrupt flag
   		LATDbits.LATD6=~LATDbits.LATD6;
		x = x<<1;
    }
}