/* * Copyright (c) 2005, Swedish Institute of Computer Science * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the Institute nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * This file is part of the Contiki operating system. * */ /** * \file * Header file for COOJA RS232 driver. * \author Adam Dunkels <adam@sics.se> * */ #ifndef RS232_H_ #define RS232_H_ #define RS232_19200 1 #define RS232_38400 2 #define RS232_57600 3 #define RS232_115200 4 /** * \brief Initialize the RS232 module * * This function is called from the boot up code to * initalize the RS232 module. */ void rs232_init(void); /** * \brief Set an input handler for incoming RS232 data * \param f A pointer to a byte input handler * * This function sets the input handler for incoming RS232 * data. The input handler function is called for every * incoming data byte. The function is called from the * RS232 interrupt handler, so care must be taken when * implementing the input handler to avoid race * conditions. * * The return value of the input handler affects the sleep * mode of the CPU: if the input handler returns non-zero * (true), the CPU is awakened to let other processing * take place. If the input handler returns zero, the CPU * is kept sleeping. */ void rs232_set_input(int (* f)(unsigned char)); /** * \brief Configure the speed of the RS232 hardware * \param speed The speed * * This function configures the speed of the RS232 * hardware. The allowed parameters are RS232_19200, * RS232_38400, RS232_57600, and RS232_115200. */ void rs232_set_speed(unsigned char speed); /** * \brief Print a text string on RS232 * \param text A pointer to the string that is to be printed * * This function prints a string to RS232. The string must * be terminated by a null byte. The RS232 module must be * correctly initalized and configured for this function * to work. */ void rs232_print(char *text); /** * \brief Print a character on RS232 * \param c The character to be printed * * This function prints a character to RS232. The RS232 * module must be correctly initalized and configured for * this function to work. */ void rs232_send(char c); #endif /* RS232_H_ */