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| 1 | #define F_CPU 7372800UL | |
| 2 | #define USART_BAUDRATE 9600 | |
| 3 | #define UBRR_ERTEK ((F_CPU / (USART_BAUDRATE * 16UL)) - 1) | |
| 4 | ||
| 5 | void KonfigUART() // UART beallitasa | |
| 6 | {
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| 7 | // 9600 bps soros kommunikacio sebesseg beallitasa | |
| 8 | UBRRL = UBRR_ERTEK; // UBRR_ERTEK also 8 bitjenek betoltese az UBRRL regiszterbe | |
| 9 | UBRRH = (UBRR_ERTEK>>8); // UBRR_ERTEK felso 8 bitjenek betoltese az UBRRH regiszterbe | |
| 10 | // Aszinkron mod, 8 Adat Bit, Nincs Paritas Bit, 1 Stop Bit | |
| 11 | UCSRC |= (1 << URSEL) | (1 << UCSZ0) | (1 << UCSZ1); | |
| 12 | //Ado es Vevo aramkorok bekapcsolasa | |
| 13 | UCSRB |= (1 << RXEN) | (1 << TXEN); // | |
| 14 | } | |
| 15 | ||
| 16 | void rs232_send_byte(char data) {
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| 17 | while(!(UCSRA & (1<<UDRE))); | |
| 18 | UDR=data; | |
| 19 | } | |
| 20 | ||
| 21 | void rs232_send_line(const char *str) {
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| 22 | ||
| 23 | while (*str) {
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| 24 | rs232_send_byte(*str++); | |
| 25 | } | |
| 26 | ||
| 27 | } | |
| 28 | ||
| 29 | - | rs232_send_line("Ezt a sort jo lenne viszont latni.");
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| 29 | + | rs232_send_line("Ez egy teszt sor.");
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| 30 | ||
| 31 | ||
| 32 | ||
| 33 | ||
| 34 | ||
| 35 | ==================================== | |
| 36 | Kimenet: | |
| 37 | ||
| 38 | E\0xff\0xff\0xff\0xff\0xff\0xff\0xff\0xff\0xff\0xff\0xff\0xff\0xff\0xff\0xff\0xff\0xff\0xff\0xff\0xff\0xff\0xff\0xff\0xa15\0x01\0x01\0x03}` |
