Tuer-Schild/Door/io/uart.hpp

/*
 * Rs232.h
 *
 * Created: 04.11.2013 21:31:09
 *  Author: netz
 */ 

#ifndef RS232_H_
#define RS232_H_

#include <avr/io.h>
#include <avr/interrupt.h>

template <uint32_t baudrate>
class Uart {
	public:
		Uart() {
			sei();
			init();
			println("Uart done!");
		}
		void print(const char *text) {
			while (*text)
			{
				uart_putchar(*text);
				text++;
			}
		}
		void printDec(uint16_t wert) {
			print((wert/10000)+'0');
			print(((wert/1000)%10)+'0');
			print(((wert/100)%10)+'0');
			print(((wert/10)%10)+'0');
			print((wert%10)+'0');
		}
		void printBin(uint8_t wert) {
			print("0");
			print("b");
			for(int i=0;i<8;i++) {
				if(wert & (1<<i)) {
					print("1");
				} else {
					print("0");
				}
			}
		}
		void println(const char *text) {
			print(text);
			print("\r");
			print("\n");
		}
		void print(uint8_t wert) {
			uart_putchar(wert);
		}
	private:
		void init() {
			UBRR0L = (F_CPU / (baudrate * 16L) - 1); //Teiler wird gesetzt
			UCSR0A= (0<<RXC0) | (0<<TXC0) | (0<<UDRE0) | (0<<FE0) | (0<<DOR0) | (0<<UPE0) | (0<<U2X0) | (0<<MPCM0);
			UCSR0B= (0<<RXCIE0) | (0<<TXCIE0) | (0<<UDRIE0) | (0<<RXEN0) | (1<<TXEN0) | (0<<UCSZ02) | (0<<RXB80) | (0<<TXB80); //Enable TXEN im Register UCR TX-Data Enable
			UCSR0C= (0<<UMSEL01) | (0<<UMSEL00) | (0<<UPM01) | (0<<UPM00) | (0<<USBS0) | (1<<UCSZ01) | (1<<UCSZ00) | (0<<UCPOL0); //8N1
		}
		uint8_t uart_putchar(uint8_t c) {
			loop_until_bit_is_set(UCSR0A, UDRE0); //Ausgabe des Zeichens
			UDR0 = c;
			return 0;
		}
};



#endif /* RS232_H_ */