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/****************************************************************************
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/****************************************************************************
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 *   Copyright (C) 2009-2011 by Claas Anders "CaScAdE" Rathje               *
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 *   Copyright (C) 2009-2011 by Claas Anders "CaScAdE" Rathje               *
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 *   admiralcascade@gmail.com                                               *
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 *   admiralcascade@gmail.com                                               *
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 *   Project-URL: http://www.mylifesucks.de/oss/c-osd/                      *
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 *   Project-URL: http://www.mylifesucks.de/oss/c-osd/                      *
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 *                                                                          *
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 *                                                                          *
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 *   This program is free software; you can redistribute it and/or modify   *
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 *   This program is free software; you can redistribute it and/or modify   *
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 *   it under the terms of the GNU General Public License as published by   *
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 *   it under the terms of the GNU General Public License as published by   *
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 *   the Free Software Foundation; either version 2 of the License.         *
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 *   the Free Software Foundation; either version 2 of the License.         *
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 *                                                                          *
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 *                                                                          *
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 *   This program is distributed in the hope that it will be useful,        *
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 *   This program is distributed in the hope that it will be useful,        *
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 *   but WITHOUT ANY WARRANTY; without even the implied warranty of         *
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 *   but WITHOUT ANY WARRANTY; without even the implied warranty of         *
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 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the          *
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 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the          *
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 *   GNU General Public License for more details.                           *
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 *   GNU General Public License for more details.                           *
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 *                                                                          *
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 *                                                                          *
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 *   You should have received a copy of the GNU General Public License      *
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 *   You should have received a copy of the GNU General Public License      *
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 *   along with this program; if not, write to the                          *
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 *   along with this program; if not, write to the                          *
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 *   Free Software Foundation, Inc.,                                        *
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 *   Free Software Foundation, Inc.,                                        *
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 *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.              *
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 *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.              *
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 ****************************************************************************/
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 ****************************************************************************/
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#include "main.h"
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#include "main.h"
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#include <avr/io.h>
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#include <avr/io.h>
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#include <avr/interrupt.h>
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#include <avr/interrupt.h>
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#include <util/delay.h>
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#include <util/delay.h>
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#include "usart0.h"
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#include "usart0.h"
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-
 
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#ifdef SERIALDEBUGDRAW
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#define USART0ENABLE 1
-
 
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#endif
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#ifdef ANTENNATRACKTEST 
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#ifdef ANTENNATRACKTEST
-
 
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#define USART0ENABLE 1
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#endif
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#ifdef USART0ENABLE
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#if !(ALLCHARSDEBUG|(WRITECHARS != -1))
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#if !(ALLCHARSDEBUG|(WRITECHARS != -1))
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/* ##########################################################################
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/* ##########################################################################
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 * USART0 stuff
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 * USART0 stuff
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 * ##########################################################################*/
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 * ##########################################################################*/
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/**
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/**
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 * init usart1
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 * init usart1
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 */
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 */
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void usart0_init() {
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void usart0_init() {
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    UBRR0H = ((F_CPU / (16UL * baud)) - 1) >> 8;
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    UBRR0H = ((F_CPU / (16UL * baud)) - 1) >> 8;
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    UBRR0L = (F_CPU / (16UL * baud)) - 1;
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    UBRR0L = (F_CPU / (16UL * baud)) - 1;
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    // Enable receiver and transmitter; enable RX interrupt
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    // Enable receiver and transmitter; enable RX interrupt
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    UCSR0B = (1 << RXEN0) | (1 << TXEN0) | (1 << RXCIE0);
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    UCSR0B = (1 << RXEN0) | (1 << TXEN0) | (1 << RXCIE0);
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    //asynchronous 8N1
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    //asynchronous 8N1
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    UCSR0C = (1 << URSEL0) | (3 << UCSZ00);
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    UCSR0C = (1 << URSEL0) | (3 << UCSZ00);
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    DDRD |= (1 << DDD1); // set TXD pin as output
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    PORTD &= ~(1 << PORTD1); // disable pullup on TXD pin
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}
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}
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/**
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/**
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 * send a single <character> through usart1
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 * send a single <character> through usart1
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 */
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 */
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void usart0_putc(unsigned char character) {
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void usart0_putc(unsigned char character) {
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    // wait until UDR ready
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    // wait until UDR ready
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    while (!(UCSR0A & (1 << UDRE0)));
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    while (!(UCSR0A & (1 << UDRE0)));
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    UDR0 = character;
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    UDR0 = character;
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}
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}
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/**
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/**
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 * send a <string> throught usart0
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 * send a <string> throught usart0
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 */
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 */
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void usart0_puts(char *s) {
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void usart0_puts(char *s) {
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    while (*s) {
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    while (*s) {
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        usart0_putc(*s);
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        usart0_putc(*s);
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        s++;
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        s++;
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    }
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    }
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}
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}
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/**
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/**
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 * send a PGM<string> throught usart1
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 * send a PGM<string> throught usart1
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 */
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 */
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void usart0_puts_pgm(const char* string) {
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void usart0_puts_pgm(const char* string) {
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    while (pgm_read_byte(string) != 0x00)
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    while (pgm_read_byte(string) != 0x00)
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        usart0_putc(pgm_read_byte(string++));
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        usart0_putc(pgm_read_byte(string++));
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}
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}
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/**
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/**
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 * transmit interrupt handler
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 * transmit interrupt handler
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 * unused
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 * unused
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 */
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 */
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ISR(SIG_USART0_DATA) {
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ISR(SIG_USART0_DATA) {
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}
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}
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/*
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/*
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 * receive data through usart1
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 * receive data through usart1
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 * portions taken and adapted from
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 * portions taken and adapted from
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 * http://svn.mikrokopter.de/mikrowebsvn/filedetails.php?repname=FlightCtrl&path=%2Fbranches%2FV0.72p+Code+Redesign+killagreg%2Fuart0.c
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 * http://svn.mikrokopter.de/mikrowebsvn/filedetails.php?repname=FlightCtrl&path=%2Fbranches%2FV0.72p+Code+Redesign+killagreg%2Fuart0.c
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 */
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 */
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ISR(SIG_USART0_RECV) {
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ISR(SIG_USART0_RECV) {
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    uint8_t c;
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    uint8_t c;
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    // catch the received byte
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    // catch the received byte
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    c = UDR0;
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    c = UDR0;
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        // echo 
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        // echo 
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        UDR0 = c;
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        UDR0 = c;
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}
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}
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#endif
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#endif
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#endif // ANTENNATRACKTEST 
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#endif // USART0ENABLE
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