Contiki 2.6

rs232_atmega644.h

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00001 /*
00002  * Copyright (c) 2006, Technical University of Munich
00003  * All rights reserved.
00004  *
00005  * Redistribution and use in source and binary forms, with or without
00006  * modification, are permitted provided that the following conditions
00007  * are met:
00008  * 1. Redistributions of source code must retain the above copyright
00009  *    notice, this list of conditions and the following disclaimer.
00010  * 2. Redistributions in binary form must reproduce the above copyright
00011  *    notice, this list of conditions and the following disclaimer in the
00012  *    documentation and/or other materials provided with the distribution.
00013  * 3. Neither the name of the Institute nor the names of its contributors
00014  *    may be used to endorse or promote products derived from this software
00015  *    without specific prior written permission.
00016  *
00017  * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
00018  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
00019  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
00020  * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
00021  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
00022  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
00023  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
00024  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
00025  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
00026  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
00027  * SUCH DAMAGE.
00028  *
00029  * This file is part of the Contiki operating system.
00030  *
00031  * @(#)$$
00032  */
00033 
00034 /**
00035  * \file
00036  *         AVR specific definitions for the rs232 port.
00037  *
00038  * \author
00039  *         Simon Barner <barner@in.tum.de
00040  */
00041 
00042 #ifndef __RS232_ATMEGA644__
00043 #define __RS232_ATMEGA644__
00044 /******************************************************************************/
00045 /***   Includes                                                               */
00046 /******************************************************************************/
00047 #include <avr/io.h>
00048 
00049 /******************************************************************************/
00050 /***   RS232 ports                                                            */
00051 /******************************************************************************/
00052 #define RS232_PORT_0 0
00053 
00054 /******************************************************************************/
00055 /***   Baud rates                                                             */
00056 /******************************************************************************/
00057 #if F_CPU == 16000000
00058 /* Single speed operation (U2X = 0)*/
00059 #define USART_BAUD_2400 416
00060 #define USART_BAUD_4800 207
00061 #define USART_BAUD_9600 103
00062 #define USART_BAUD_14400 68
00063 #define USART_BAUD_19200 51
00064 #define USART_BAUD_28800 34
00065 #define USART_BAUD_38400 25
00066 #define USART_BAUD_57600 16
00067 #define USART_BAUD_76800 12
00068 #define USART_BAUD_115200 8
00069 #define USART_BAUD_230400 3
00070 #define USART_BAUD_250000 3
00071 #define USART_BAUD_500000 1
00072 #define USART_BAUD_1000000 0
00073 #elif F_CPU == 8000000
00074 /* Single speed operation (U2X = 0)*/
00075 #define USART_BAUD_2400 207
00076 #define USART_BAUD_4800 103
00077 #define USART_BAUD_9600 51
00078 #define USART_BAUD_14400 34
00079 #define USART_BAUD_19200 25
00080 #define USART_BAUD_28800 16
00081 #define USART_BAUD_38400 12
00082 #define USART_BAUD_57600 8
00083 #define USART_BAUD_76800 6
00084 #define USART_BAUD_115200 3
00085 #define USART_BAUD_230400 1
00086 #define USART_BAUD_250000 1
00087 #define USART_BAUD_500000 0
00088 #else
00089 #error "Please define the baud rates for your CPU clock: ATmega644 handbook p. \
00090 187-190 or set the rate in contiki-conf.h"
00091 #endif
00092 
00093 
00094 /******************************************************************************/
00095 /***   Interrupt settings                                                     */
00096 /******************************************************************************/
00097 #define USART_INTERRUPT_RX_COMPLETE _BV (RXCIE0)
00098 #define USART_INTERRUPT_TX_COMPLETE _BV (TXCIE0)
00099 #define USART_INTERRUPT_DATA_REG_EMPTY _BV (UDRIE0)
00100 
00101 /******************************************************************************/
00102 /***   Receiver / transmitter                                                 */
00103 /******************************************************************************/
00104 #define USART_RECEIVER_ENABLE _BV (RXEN0)
00105 #define USART_TRANSMITTER_ENABLE _BV (TXEN0)
00106 
00107 /******************************************************************************/
00108 /***   Mode select                                                            */
00109 /******************************************************************************/
00110 #define USART_MODE_ASYNC 0x00
00111 #define USART_MODE_SYNC _BV (UMSEL00)
00112 
00113 /******************************************************************************/
00114 /***   Parity                                                                 */
00115 /******************************************************************************/
00116 #define USART_PARITY_NONE 0x00
00117 #define USART_PARITY_EVEN _BV (UPM01)
00118 #define USART_PARITY_ODD  _BV (UPM01) | _BV (UPM00)
00119 
00120 /******************************************************************************/
00121 /***   Stop bits                                                              */
00122 /******************************************************************************/
00123 #define USART_STOP_BITS_1 0x00
00124 #define USART_STOP_BITS_2 _BV (USBS)
00125 
00126 /******************************************************************************/
00127 /***   Character size                                                         */
00128 /******************************************************************************/
00129 #define USART_DATA_BITS_5 0x00
00130 #define USART_DATA_BITS_6 _BV (UCSZ00)
00131 #define USART_DATA_BITS_7 _BV (UCSZ01)
00132 #define USART_DATA_BITS_8 _BV (UCSZ01) | _BV (UCSZ00)
00133 // #define USART_DATA_BITS_9 (needs also UCSZ2 bit in UCSRnB)
00134 
00135 /******************************************************************************/
00136 /***   Clock polarity                                                         */
00137 /******************************************************************************/
00138 #define USART_RISING_XCKN_EDGE 0x00
00139 #define USART_FALLING_XCKN_EDGE _BV (UCPOL0)
00140 
00141 #endif /* #ifndef __RS232_ATMEGA644__ */