contiki/cpu/cc2538/dev/cc2538-rf.h

198 lines
6.8 KiB
C

/*
* Copyright (c) 2012, Texas Instruments Incorporated - http://www.ti.com/
* 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.
*/
/**
* \addtogroup cc2538
* @{
*
* \defgroup cc2538-rf cc2538 RF Driver
*
* Driver implementation for the cc2538 RF transceiver
* @{
*
* \file
* Header file for the cc2538 RF driver
*/
#ifndef CC2538_RF_H__
#define CC2538_RF_H__
#include "contiki.h"
#include "dev/radio.h"
#include "dev/rfcore.h"
#include "reg.h"
/*---------------------------------------------------------------------------
* RF Config
*---------------------------------------------------------------------------*/
/* Constants */
#define CC2538_RF_CCA_THRES_USER_GUIDE 0xF8
#define CC2538_RF_TX_POWER_RECOMMENDED 0xD5 /* ToDo: Determine value */
#define CC2538_RF_CHANNEL_MIN 11
#define CC2538_RF_CHANNEL_MAX 26
#define CC2538_RF_CHANNEL_SPACING 5
#define CC2538_RF_MAX_PACKET_LEN 127
#define CC2538_RF_MIN_PACKET_LEN 4
#define CC2538_RF_CCA_CLEAR 1
#define CC2538_RF_CCA_BUSY 0
/*---------------------------------------------------------------------------*/
#ifdef CC2538_RF_CONF_TX_POWER
#define CC2538_RF_TX_POWER CC2538_RF_CONF_TX_POWER
#else
#define CC2538_RF_TX_POWER CC2538_RF_TX_POWER_RECOMMENDED
#endif /* CC2538_RF_CONF_TX_POWER */
#ifdef CC2538_RF_CONF_CCA_THRES
#define CC2538_RF_CCA_THRES CC2538_RF_CONF_CCA_THRES
#else
#define CC2538_RF_CCA_THRES CCA_THRES_USER_GUIDE /** User guide recommendation */
#endif /* CC2538_RF_CONF_CCA_THRES */
#ifdef CC2538_RF_CONF_CHANNEL
#define CC2538_RF_CHANNEL CC2538_RF_CONF_CHANNEL
#else
#define CC2538_RF_CHANNEL 18
#endif /* CC2538_RF_CONF_CHANNEL */
#ifdef CC2538_RF_CONF_AUTOACK
#define CC2538_RF_AUTOACK CC2538_RF_CONF_AUTOACK
#else
#define CC2538_RF_AUTOACK 1
#endif /* CC2538_RF_CONF_AUTOACK */
/*---------------------------------------------------------------------------
* Command Strobe Processor
*---------------------------------------------------------------------------*/
/* OPCODES */
#define CC2538_RF_CSP_OP_ISRXON 0xE3
#define CC2538_RF_CSP_OP_ISTXON 0xE9
#define CC2538_RF_CSP_OP_ISTXONCCA 0xEA
#define CC2538_RF_CSP_OP_ISRFOFF 0xEF
#define CC2538_RF_CSP_OP_ISFLUSHRX 0xED
#define CC2538_RF_CSP_OP_ISFLUSHTX 0xEE
/**
* \brief Send an RX ON command strobe to the CSP
*/
#define CC2538_RF_CSP_ISRXON() \
do { REG(RFCORE_SFR_RFST) = CC2538_RF_CSP_OP_ISRXON; } while(0)
/**
* \brief Send a TX ON command strobe to the CSP
*/
#define CC2538_RF_CSP_ISTXON() \
do { REG(RFCORE_SFR_RFST) = CC2538_RF_CSP_OP_ISTXON; } while(0)
/**
* \brief Send a RF OFF command strobe to the CSP
*/
#define CC2538_RF_CSP_ISRFOFF() \
do { REG(RFCORE_SFR_RFST) = CC2538_RF_CSP_OP_ISRFOFF; } while(0)
/**
* \brief Flush the RX FIFO
*/
#define CC2538_RF_CSP_ISFLUSHRX() do { \
REG(RFCORE_SFR_RFST) = CC2538_RF_CSP_OP_ISFLUSHRX; \
REG(RFCORE_SFR_RFST) = CC2538_RF_CSP_OP_ISFLUSHRX; \
} while(0)
/**
* \brief Flush the TX FIFO
*/
#define CC2538_RF_CSP_ISFLUSHTX() do { \
REG(RFCORE_SFR_RFST) = CC2538_RF_CSP_OP_ISFLUSHTX; \
REG(RFCORE_SFR_RFST) = CC2538_RF_CSP_OP_ISFLUSHTX; \
} while(0)
/*---------------------------------------------------------------------------*/
/** The NETSTACK data structure for the cc2538 RF driver */
extern const struct radio_driver cc2538_rf_driver;
/*---------------------------------------------------------------------------*/
/**
* \brief Set the current operating channel
* \param channel The desired channel as a value in [11,26]
* \return Returns a value in [11,26] representing the current channel
* or a negative value if \e channel was out of bounds
*/
int8_t cc2538_rf_channel_set(uint8_t channel);
/**
* \brief Get the current operating channel
* \return Returns a value in [11,26] representing the current channel
*/
uint8_t cc2538_rf_channel_get(void);
/**
* \brief Sets RF TX power
* \param new_power The desired power level
* \return The power level in use after the adjustment
*
* The value specified in \e new_power will be written directly to the
* RFCORE_XREG_TXPOWER register. See the datasheet for more details on
* possible values.
*/
uint8_t cc2538_rf_power_set(uint8_t new_power);
/**
* \brief Sets addresses and PAN identifier to the relevant RF hardware
* registers
* \param pan The PAN Identifier
*
* Values for short and extended addresses are not needed as parameters
* since they exist in the linkaddr buffer in the contiki core. They
* are thus simply copied over from there.
*/
void cc2538_rf_set_addr(uint16_t pan);
/**
* \brief Reads the current signal strength (RSSI)
* \return The current RSSI
*
* This function reads the current RSSI on the currently configured
* channel.
*/
int cc2538_rf_read_rssi(void);
/**
* \brief Turn promiscous mode on or off
* \param p If promiscous mode should be on (1) or off (0)
*
* This function turns promiscous mode on or off. In promiscous mode,
* every received frame is returned from the RF core. In
* non-promiscous mode, only broadcast frames or frames with our
* address as the receive address are returned from the RF core.
*/
void cc2538_rf_set_promiscous_mode(char p);
/*---------------------------------------------------------------------------*/
#endif /* CC2538_RF_H__ */
/**
* @}
* @}
*/