0,0 → 1,66 |
/**************************************************************************** |
* Copyright (C) 2011 by Claas Anders "CaScAdE" Rathje * |
* admiralcascade@gmail.com * |
* Project-URL: http://www.mylifesucks.de/oss/c-epilepsy/ * |
* * |
* This program is free software; you can redistribute it and/or modify * |
* it under the terms of the GNU General Public License as published by * |
* the Free Software Foundation; either version 2 of the License. * |
* * |
* This program is distributed in the hope that it will be useful, * |
* but WITHOUT ANY WARRANTY; without even the implied warranty of * |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * |
* GNU General Public License for more details. * |
* * |
* You should have received a copy of the GNU General Public License * |
* along with this program; if not, write to the * |
* Free Software Foundation, Inc., * |
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. * |
****************************************************************************/ |
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#include "usart1.h" |
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#ifdef __AVR_ATmega644P__ |
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/** |
* init usart1 |
*/ |
void usart1_init() { |
UBRR1H = ((F_CPU / (16UL * USART1_BAUD)) - 1) >> 8; |
UBRR1L = (F_CPU / (16UL * USART1_BAUD)) - 1; |
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// Enable receiver and transmitter; enable RX interrupt |
UCSR1B = (1 << RXEN1) | (1 << TXEN1) | (1 << RXCIE1); |
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// set asynchronous mode |
UCSR1C &= ~(1 << UMSEL11); |
UCSR1C &= ~(1 << UMSEL10); |
// no parity |
UCSR1C &= ~(1 << UPM11); |
UCSR1C &= ~(1 << UPM10); |
// 1 stop bit |
UCSR1C &= ~(1 << USBS1); |
// 8-bit |
UCSR1B &= ~(1 << UCSZ12); |
UCSR1C |= (1 << UCSZ11); |
UCSR1C |= (1 << UCSZ10); |
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// set direction of RXD1 and TXD1 pins |
// set RXD1 (PD2) as an input pin |
PORTD &= ~(1 << PORTD2); |
DDRD &= ~(1 << DDD2); |
// set TXD1 (PD3) as an output pin |
//PORTD |= (1 << PORTD3); |
//DDRD &= ~(1 << DDD3); |
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} |
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ISR(USART1_TX_vect, ISR_BLOCK) { |
} |
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ISR(USART1_RX_vect, ISR_BLOCK) { |
} |
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#endif // __AVR_ATmega644P__ |