109 lines
3.8 KiB
C
109 lines
3.8 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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*/
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/**
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* \file
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* Header file for COOJA RS232 driver.
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* \author Adam Dunkels <adam@sics.se>
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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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#define RS232_19200 1
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#define RS232_38400 2
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#define RS232_57600 3
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#define RS232_115200 4
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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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*/
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void rs232_init(void);
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/**
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* \brief Set an input handler for incoming RS232 data
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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 rs232_set_input(int (* f)(unsigned char));
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/**
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* \brief Configure the speed of the RS232 hardware
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* \param speed The speed
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*
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* This function configures the speed of the RS232
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* hardware. The allowed parameters are RS232_19200,
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* RS232_38400, RS232_57600, and RS232_115200.
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*/
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void rs232_set_speed(unsigned char speed);
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/**
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* \brief Print a text string on RS232
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* \param text A pointer to the string that is to be printed
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*
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* This function prints a string to RS232. The string must
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* be terminated by a null byte. The RS232 module must be
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* correctly initalized and configured for this function
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* to work.
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*/
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void rs232_print(char *text);
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/**
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* \brief Print a character on RS232
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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 rs232_send(char c);
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#endif /* RS232_H_ */
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