#define I2C_SLAVE_ADDR        0x0055
#define I2C_NUMBYTES          1

void main(void)
{

   InitSysCtrl();
   InitI2CGpio();

   bool flag = true;

  I2CA_Init_master();

for(;;)
    {

      while(GpioDataRegs.GPBDAT.bit.GPIO44 == 0 && flag )
      {

        GREENLED_ON ;
        I2CA_WriteData();
        GREENLED_OFF ;
        flag = false;
      }
    }

void I2CA_Init_master(void)
{
    I2caRegs.I2CSAR = I2C_SLAVE_ADDR;// Slave address -
    I2caRegs.I2CPSC.all = 6;        // Prescaler - need 7-12 Mhz on module clk
    I2caRegs.I2CCLKL = 10;          // NOTE: must be non zero
    I2caRegs.I2CCLKH = 5;           // NOTE: must be non zero
    I2caRegs.I2CIER.all = 0;

    I2caRegs.I2CMDR.all = 0x0020;   // Take I2C out of reset

    DELAY_US(10);
    return;
}


void  I2CA_WriteData(void){
     Uint16 i;
     //   while (I2caRegs.I2CMDR.bit.STP == 1)
     //    {
     //    };
     I2caRegs.I2CSAR = I2C_SLAVE_ADDR;           //slave address register
     I2caRegs.I2CCNT = I2C_NUMBYTES ;     	 //data count is 1 byte
    
     I2caRegs.I2CDXR = 0xf0;         		 //The only data byte I am trying to send
     
     I2caRegs.I2CMDR.bit.TRX = 1;
     I2caRegs.I2CMDR.bit.MST = 1;
     I2caRegs.I2CMDR.bit.FREE = 1;
     I2caRegs.I2CMDR.bit.STP = 1; 		//creating a stop condition will free the BUS thus turning the BB == 0.
     I2caRegs.I2CMDR.bit.STT = 1; 		// As soon as you start the Start Bit the BB == 1 becomes busy again.
     return ;
}