#include <msp430x12x.h>
#include "owndef.h"
#include "lcd.h"
/********************************************************/
#include <stdio.h>


#define TRUE    	1
#define FALSE 	!TRUE

 unsigned char rec_buffer[10], send_buffer[10];
 unsigned char position, empfangen_flag;

//____________________________________________________________________________________

void UART_byte (unsigned char c) 
{
	while (!(IFG2 & UTXIFG0));
	c=RXBUF0;
}


//____________________________________________________________________________________



void usart_byte_string (unsigned char *string, unsigned char len) 
{
	int i;
	while (!(IFG2 & UTXIFG0)); {}			//solange buffer nicht leer (von gegenüber entnomnmen)
	for(i=0;i<len;i++)							//String-Index
		{
		USART_byte (string[i]);				//sende
		}
		}
//____________________________________________________________________________________

void uartClearBuffer(void)
{
	memset(&rec_buffer,0,sizeof(rec_buffer));			//string leeren
	empfangen_flag = FALSE;
	position = 0;
}

//____________________________________________________________________________________
 void main(void)
{
//______________________________________________________________________________________
 WDTCTL = WDTPW + WDTHOLD;                     // Stop WDT
//______________________________________________________________________________________   
   BCSCTL1 |= XTS;                             // XT1 as high-frequency
  _BIC_SR(OSCOFF);                             // turn on XT1 oscillator
//______________________________________________________________________________________
  UCTL0 = CHAR;                         	// 8-bit character
  UTCTL0 = SSEL0;                       	// UCLK = ACLK 
  BCSCTL1 |= 0x10;                              //teilt 8Mhz  /  2  = 4Mhz
  UBR00 = 0x80;                               //  31.25kbaud (32µs time slices)
  UBR10 = 0x00;                               
  UMCTL0 = 0x00;                        	// Modulation  
//______________________________________________________________________________________
//______________________________________________________________________________________
  P3SEL |= 0x30;                        	// P3.4,5 = USART0 TXD/RXD
  P3DIR |= 0x10;                        	// P3.4 output direction
  P1OUT &= ~0xFF;
  P1DIR |= 0xFF;
  P2DIR |= + RS + E;
//______________________________________________________________________________________
  LCD_Init();                                       // LCD initialisieren ...
  LCD_Clear();                                      //  und dann noch loeschen und cursor an den anfang zurueck
  LCD_Cursor_Set(0,0);
  LCD_Awrite("Warte");   
//______________________________________________________________________________________
  ME2 |= UTXE0 + URXE0;                 	// Enabled USART0 TXD/RXD
  IE2 |= URXIE0;                       	       // Enabled USART0 RX interrupt
  _EINT();                              	// Enable interrupts
//____________________________________________________________________________________
  if (empfangen_flag)
	{
		//do something with the date
		
		
		
		uartClearBuffer();		
	}
	
	//senden von 3 Bytes
	send_buffer[0]= 'a';
	send_buffer[1]= 'b';
	send_buffer[2]= 'c';
	
	usart_byte_string (send_buffer, 3); 

}
//_____________________________________________________________________________________
//_____________________________________________________________________________________


 unsigned char rxbuffer[3];
 unsigned int n=0,x=0; 
#pragma vector=UART0RX_VECTOR
__interrupt void usart0_rx (void)
{ 

               
 rec_buffer[position++] = RXBUF0;	
 if (position == 3)
	empfangen_flag = TRUE;
   }