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163 lines
6.3 KiB
C
163 lines
6.3 KiB
C
/*
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* Copyright (c) 2005, Swedish Institute of Computer Science
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the Institute nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* This file is part of the Contiki operating system.
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*
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* Author: Adam Dunkels <adam@sics.se>
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* Simon Barner <barner@in.tum.de>
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*
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*/
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#ifndef RS232_H_
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#define RS232_H_
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#include <avr/pgmspace.h>
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#include "contiki-conf.h"
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#if defined (__AVR_ATmega128__)
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#include "dev/rs232_atmega128.h"
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#elif defined (__AVR_ATmega1281__)
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#include "dev/rs232_atmega1281.h"
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#elif defined (__AVR_ATmega1284P__)
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#include "dev/rs232_atmega1284.h"
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#elif defined (__AVR_AT90USB1287__)
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#include "dev/rs232_at90usb1287.h"
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#elif defined (__AVR_ATmega128RFA1__)
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#include "dev/rs232_atmega128rfa1.h"
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#elif defined (__AVR_ATmega128RFR2__)
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#include "dev/rs232_atmega128rfa1.h"
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#elif defined (__AVR_ATmega256RFR2__)
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#include "dev/rs232_atmega128rfa1.h"
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#elif defined (__AVR_ATmega644__) || defined (__AVR_ATmega328P__)
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#include "dev/rs232_atmega644.h"
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#elif defined (__AVR_ATmega8__) || defined (__AVR_ATmega8515__) \
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|| defined (__AVR_ATmega16__) || defined (__AVR_ATmega32__)
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#include "dev/rs232_atmega32.h"
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#else
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#error "Please implement a rs232 header for your MCU (or set the MCU type \
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in contiki-conf.h)."
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#endif
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/******************************************************************************/
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/*** Baud rates */
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/******************************************************************************/
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#define BAUD_RATE(x) (F_CPU/16/x-1)
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/**
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* \brief Initialize the RS232 module
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*
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* This function is called from the boot up code to
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* initalize the RS232 module.
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* \param port The RS232 port to be used.
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* \param bd The baud rate of the connection.
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* \param ffmt The frame format of the connection, i.e. parity mode,
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* number of stop and data bits, ...
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*/
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void
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rs232_init (uint8_t port, uint8_t bd, uint8_t ffmt);
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/**
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* \brief Set an input handler for incoming RS232 data
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* \param port The RS232 port to be used.
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* \param f A pointer to a byte input handler
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*
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* This function sets the input handler for incoming RS232
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* data. The input handler function is called for every
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* incoming data byte. The function is called from the
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* RS232 interrupt handler, so care must be taken when
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* implementing the input handler to avoid race
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* conditions.
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*
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* The return value of the input handler affects the sleep
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* mode of the CPU: if the input handler returns non-zero
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* (true), the CPU is awakened to let other processing
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* take place. If the input handler returns zero, the CPU
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* is kept sleeping.
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*/
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void
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rs232_set_input(uint8_t port, int (* f)(unsigned char));
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/**
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* \brief Print a text string from program memory on RS232
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* \param port The RS232 port to be used.
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* \param buf A pointer to the string that is to be printed
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*
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* This function prints a string from program memory to
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* RS232. The string must be terminated by a null
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* byte. The RS232 module must be correctly initalized and
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* configured for this function to work.
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*/
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void
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rs232_print(uint8_t port, char *buf);
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/**
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* \brief Print a formated string on RS232
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* \param port The RS232 port to be used.
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* \param fmt The format string that is used to construct the string
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* from a variable number of arguments.
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*
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* This function prints a formated string to RS232. Note
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* that this function used snprintf internally and thus cuts
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* the resulting string after RS232_PRINTF_BUFFER_LENGTH - 1
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* bytes. You can override this buffer lenght with the
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* RS232_CONF_PRINTF_BUFFER_LENGTH define. The RS232 module
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* must becorrectly initalized and configured for this
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* function to work.
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*/
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void
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rs232_printf(uint8_t port, const char *fmt, ...);
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/**
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* \brief Print a character on RS232
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* \param port The RS232 port to be used.
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* \param c The character to be printed
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*
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* This function prints a character to RS232. The RS232
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* module must be correctly initalized and configured for
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* this function to work.
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*/
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void
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rs232_send(uint8_t port, unsigned char c);
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/**
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* \brief Redirects stdout to a given RS232 port
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* \param port The RS232 port to be used.
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*
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* This function redirects the stdout channel to a given
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* RS232 port. Note that this modfies the global variable
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* stdout. If you want to restore the previous behaviour, it
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* is your responsibility to backup to old value. The RS232
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* module must be correctly initalized and configured for
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* the redirection to work.
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*/
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void
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rs232_redirect_stdout (uint8_t port);
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#endif /* RS232_H_ */
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