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| Rev | Author | Line No. | Line |
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| 772 | - | 1 | /**************************************************************************** |
| 2 | * Copyright (C) 2009-2010 by Claas Anders "CaScAdE" Rathje * |
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| 3 | * admiralcascade@gmail.com * |
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| 4 | * Project-URL: http://www.mylifesucks.de/oss/c-osd/ * |
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| 5 | * * |
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| 6 | * This program is free software; you can redistribute it and/or modify * |
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| 7 | * it under the terms of the GNU General Public License as published by * |
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| 8 | * the Free Software Foundation; either version 2 of the License. * |
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| 9 | * * |
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| 10 | * This program is distributed in the hope that it will be useful, * |
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| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of * |
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| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * |
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| 13 | * GNU General Public License for more details. * |
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| 14 | * * |
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| 15 | * You should have received a copy of the GNU General Public License * |
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| 16 | * along with this program; if not, write to the * |
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| 17 | * Free Software Foundation, Inc., * |
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| 18 | * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. * |
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| 19 | ****************************************************************************/ |
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| 20 | |||
| 21 | #include <avr/io.h> |
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| 22 | #include <avr/interrupt.h> |
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| 23 | #include <util/delay.h> |
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| 24 | #include "main.h" |
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| 25 | #include "usart0.h" |
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| 26 | |||
| 27 | #ifdef ANTENNATRACKTEST |
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| 28 | |||
| 29 | |||
| 30 | #if !(ALLCHARSDEBUG|(WRITECHARS != -1)) |
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| 31 | |||
| 32 | |||
| 33 | /* ########################################################################## |
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| 34 | * USART0 stuff |
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| 35 | * ##########################################################################*/ |
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| 36 | |||
| 37 | /** |
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| 38 | * init usart1 |
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| 39 | */ |
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| 40 | void usart0_init() { |
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| 41 | UBRR0H = ((F_CPU / (16UL * baud)) - 1) >> 8; |
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| 42 | UBRR0L = (F_CPU / (16UL * baud)) - 1; |
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| 43 | |||
| 44 | // Enable receiver and transmitter; enable RX interrupt |
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| 45 | UCSR0B = (1 << RXEN0) | (1 << TXEN0) | (1 << RXCIE0); |
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| 46 | |||
| 47 | //asynchronous 8N1 |
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| 48 | UCSR0C = (1 << URSEL0) | (3 << UCSZ00); |
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| 49 | } |
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| 50 | |||
| 51 | |||
| 52 | /** |
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| 53 | * send a single <character> through usart1 |
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| 54 | */ |
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| 55 | void usart0_putc(unsigned char character) { |
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| 56 | // wait until UDR ready |
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| 57 | while (!(UCSR0A & (1 << UDRE0))); |
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| 58 | UDR0 = character; |
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| 59 | } |
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| 60 | |||
| 61 | /** |
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| 62 | * send a <string> throught usart0 |
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| 63 | */ |
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| 64 | void usart0_puts(char *s) { |
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| 65 | while (*s) { |
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| 66 | usart0_putc(*s); |
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| 67 | s++; |
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| 68 | } |
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| 69 | } |
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| 70 | |||
| 71 | /** |
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| 72 | * send a PGM<string> throught usart1 |
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| 73 | */ |
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| 74 | void usart0_puts_pgm(const char* string) { |
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| 75 | while (pgm_read_byte(string) != 0x00) |
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| 76 | usart0_putc(pgm_read_byte(string++)); |
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| 77 | } |
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| 78 | |||
| 79 | /** |
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| 80 | * transmit interrupt handler |
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| 81 | * unused |
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| 82 | */ |
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| 83 | ISR(SIG_USART0_DATA) { |
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| 84 | } |
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| 85 | |||
| 86 | /* |
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| 87 | * receive data through usart1 |
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| 88 | * portions taken and adapted from |
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| 89 | * http://svn.mikrokopter.de/mikrowebsvn/filedetails.php?repname=FlightCtrl&path=%2Fbranches%2FV0.72p+Code+Redesign+killagreg%2Fuart0.c |
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| 90 | */ |
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| 91 | ISR(SIG_USART0_RECV) { |
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| 92 | uint8_t c; |
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| 93 | // catch the received byte |
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| 94 | c = UDR0; |
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| 95 | |||
| 96 | // echo |
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| 97 | UDR0 = c; |
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| 98 | } |
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| 99 | |||
| 100 | |||
| 101 | |||
| 102 | #endif |
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| 103 | |||
| 104 | #endif // ANTENNATRACKTEST |