139 lines
4.5 KiB
C
139 lines
4.5 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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* @(#)$Id: tr1001.h,v 1.8 2008/07/09 20:45:06 nifi Exp $
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*/
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#ifndef __TR1001_H__
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#define __TR1001_H__
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#include "contiki-net.h"
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#include "dev/radio.h"
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#include "contiki-conf.h"
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/**
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* Radio driver for TR1001
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*/
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extern const struct radio_driver tr1001_driver;
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/**
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* Initialize the radio transceiver.
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*
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* Turns on reception of bytes and installs the receive interrupt
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* handler.
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*/
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void tr1001_init(void);
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/**
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* Set the speed of the TR1001 radio device.
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*
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* This function sets the speed of the TR1001 radio transceiver. Both
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* the sender and the receiver must have the same speed for
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* communication to work.
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*
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* \param speed The speed of the TR1001 radio: TR1001_19200,
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* TR1001_38400, TR1001_57600 or TR1001_115200.
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*
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*/
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void tr1001_set_speed(unsigned char s);
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#define TR1001_19200 1
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#define TR1001_38400 2
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#define TR1001_57600 3
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#define TR1001_115200 4
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/**
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* Set the transmission power of the transceiver.
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*
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* The sensor board is equipped with a DS1804 100 position trimmer
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* potentiometer which is used to set the transmission input current
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* to the radio transceiver chip, thus setting the transmission power
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* of the radio transceiver.
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*
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* This function sets the trimmer potentiometer to a value between 1
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* and 100.
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*
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* \param p The power of the transceiver, between 1 (lowest) and 100
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* (highest).
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*/
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void tr1001_set_txpower(unsigned char p);
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/**
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* \brief The highest transmission power
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*/
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#define TR1001_TXPOWER_HIGHEST 100
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/**
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* \brief The lowest transmission power
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*/
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#define TR1001_TXPOWER_LOWEST 1
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/**
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* Send a packet.
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*
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* This function causes a packet to be sent out after a small random
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* delay, but without doing any MAC layer collision detection or
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* back-offs. The packet is sent with a 4 byte header that contains a
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* a "type" identifier, an 8-bit packet ID field and the length of the
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* packet in network byte order.
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*
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* This function should normally not be called from user
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* programs. Rather, the uIP TCP/IP or Rime stack should be used.
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*/
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int tr1001_send(const void *packet, unsigned short len);
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/**
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* Check if an incoming packet has been received.
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*
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* This function checks the receive buffer to see if an entire packet
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* has been received. The actual reception is handled by an interrupt
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* handler.
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*
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* This function should normally not be called from user
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* programs. Rather, the uIP TCP/IP or Rime stack should be used.
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*
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* \return The length of the received packet, or 0 if no packet has
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* been received.
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*/
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int tr1001_read(void *buf, unsigned short bufsize);
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extern unsigned char tr1001_rxbuf[];
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extern volatile unsigned char tr1001_rxstate;
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/**
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* Calculate the signal strength of a received packet.
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*
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* This function calculates the received signal strength of the last
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* received packet. This function typically is called when a packet
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* has been received.
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*/
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unsigned short tr1001_sstrength(void);
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#endif /* __TR1001_H__ */
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