60 lines
1.4 KiB
C++
60 lines
1.4 KiB
C++
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/*
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* Rs232.h
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*
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* Created: 04.11.2013 21:31:09
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* Author: netz
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*/
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#ifndef RS232_H_
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#define RS232_H_
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#include <avr/io.h>
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#include <avr/interrupt.h>
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template <uint32_t baudrate>
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class Uart {
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public:
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Uart() {
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sei();
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init();
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println("Uart done!");
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}
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void print(const char *text) {
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while (*text)
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{
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uart_putchar(*text);
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text++;
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}
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}
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void printDec(uint16_t wert) {
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print((wert/10000)+'0');
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print(((wert/1000)%10)+'0');
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print(((wert/100)%10)+'0');
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print(((wert/10)%10)+'0');
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print((wert%10)+'0');
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}
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void println(const char *text) {
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print(text);
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print("\r");
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print("\n");
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}
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void print(uint8_t wert) {
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uart_putchar(wert);
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}
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private:
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void init() {
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UBRR0L = (F_CPU / (baudrate * 16L) - 1); //Teiler wird gesetzt
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UCSR0A= (0<<RXC0) | (0<<TXC0) | (0<<UDRE0) | (0<<FE0) | (0<<DOR0) | (0<<UPE0) | (0<<U2X0) | (0<<MPCM0);
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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
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UCSR0C= (0<<UMSEL01) | (0<<UMSEL00) | (0<<UPM01) | (0<<UPM00) | (0<<USBS0) | (1<<UCSZ01) | (1<<UCSZ00) | (0<<UCPOL0); //8N1
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}
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uint8_t uart_putchar(uint8_t c) {
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loop_until_bit_is_set(UCSR0A, UDRE0); //Ausgabe des Zeichens
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UDR0 = c;
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return 0;
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}
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};
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#endif /* RS232_H_ */
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