/*
 * File:   Test.c
 * Author: philip
 *
 * Created on January 27, 2024, 8:54 PM
 */



// KONFIGURATION  //////////////////////////


int I2CKonfig (void)
{
   
    ODCONC = 0b00011000;             // Open Drain Konfiguartion (RC3, RC4))
    
    RC3PPS = 0x37;                   // SCL  
    RC4PPS = 0x38;                   // SDA
    
    RC3I2Cbits.SLEW = 0b01;         // Fast mode Plus
    RC3I2Cbits.PU = 0b10;         // Fast mode Plus
    RC3I2Cbits.TH = 0b01;         // Fast mode Plus 
        
    RC4I2Cbits.SLEW = 0b01;         // Fast mode Plus
    RC4I2Cbits.PU = 0b10;         // Fast mode Plus
    RC4I2Cbits.TH = 0b01;         // Fast mode Plus
  
    
    I2C1PIEbits.SCIE = 1;           // Interrupt Start (nur bei Client)
    I2C1PIEbits.ADRIE = 1;          // Interrupt Adress (nur bei Client)
      
    INTCON0bits.GIE = 1;            // Interrupts aktivieren
    
    
    I2C1CON0bits.MODE = 0b000;      // Client Mode 7-bit Adresse (Bei Host 0b100)
    I2C1CON0bits.RSEN = 1;          // Stopp nach 9 Takten
    
    I2C1CON1bits.CSD = 1;           // Clock strechting nicht aktiv
    I2C1CON1bits.TXU = 0;           // Kein Transmit Underflow
    I2C1CON1bits.RXO = 0;           // Kein Receive Overflow

    I2C1CON2bits.BFRET = 00;        // Bus Free 8 Takte
    I2C1CON2bits.SDAHT = 01;        // Hold Time 100ns
    I2C1CON2bits.ABD = 0;           // Adress Buffer aktivieren
    I2C1CON2bits.FME = 0;           // Fast Mode deaktivieren
    I2C1CON2bits.GCEN = 0;          // General Call Addressing deaktivieren
    I2C1CON2bits.ACNT = 0;          // Auto Load aktivieren
    
    I2C1CLK = 0b00011;              // Clock = Fosc/4
    
    I2C1CON0bits.EN = 1;            // I2C aktivieren
  

    
   
    return 0;
}







/// UNTERPROGRAMM HOST  ///////////////////////////////////////
   
int I2CUebertragungHost (void)
{
      
     
     
    I2C1ADB1 = 3;                   // Adresse 1, empfangen
   
    I2C1CNTH = 0;
    I2C1CNTL = 4;                   // Anzahl der Übertragungen

    
 
    
   I2C1CON0bits.S = 1;             // Start
    
    
  
   
    
  while (I2C1STAT1bits.RXBF == 0)
   {   
   }   
   Uebertragung1 = I2C1RXB; 
     
   
       
  while (I2C1STAT1bits.RXBF == 0)
  {    
  }         
   Uebertragung2 = I2C1RXB;  
     
     
 
  while (I2C1STAT1bits.RXBF == 0)
  {  
  }         
  Uebertragung3 = I2C1RXB;  
  

 
  
   Uebertragung4 = I2C1RXB;   
  
 

   
      __delay_ms(10);
 
           
      
   I2C1ERR = 0;

   
} 





/// UNTERPROGRAMM CLIENT  ///////////////////////////////////////

   
int I2CUebertragungClient (void)
{
    
   
    
    I2C1ADR0 = 2;                  // Client Adresse
    I2C1ADR1 = 2;
    I2C1ADR2 = 2;
    I2C1ADR3 = 2;
          
          
    I2C1CNTH = 0;
    I2C1CNTL = 4;                   // Anzahl der Übertragungen
    
    
    
    
  
    I2C1TXB = Uebertragung1;
    
     
  
    while (I2C1PIRbits.SCIF == 0)   // Warten bis Start interrupt Flag gesetzt wird
    {  
    }
   
     
    
    while (I2C1STAT1bits.TXBE == 0)
    {
    }      
    I2C1TXB = Uebertragung2; 
    
     
  
    while (I2C1STAT1bits.TXBE == 0)
    {
    }    
    I2C1TXB = Uebertragung3;  
     
    
    
    
    while (I2C1STAT1bits.TXBE == 0)
    {
    }    
    I2C1TXB = Uebertragung4;  
    
    
    
    
    
    while (I2C1PIRbits.PCIF == 0)   // Warten bis Stopp interrupt Flag gesetzt wird
    {  
    }
    
    
    
    
   I2C1ERR = 0;
    
   
}