/* * Copyright (c) 2007, 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 * CC2420 driver header file * \author * Adam Dunkels <adam@sics.se> * Joakim Eriksson <joakime@sics.se> */ #ifndef __CC2420_H__ #define __CC2420_H__ #include "contiki.h" #include "dev/spi.h" #include "dev/radio.h" #include "dev/cc2420_const.h" int cc2420_init(void); #define CC2420_MAX_PACKET_LEN 127 int cc2420_set_channel(int channel); int cc2420_get_channel(void); void cc2420_set_pan_addr(unsigned pan, unsigned addr, const uint8_t *ieee_addr); extern signed char cc2420_last_rssi; extern uint8_t cc2420_last_correlation; int cc2420_rssi(void); extern const struct radio_driver cc2420_driver; /** * \param power Between 1 and 31. */ void cc2420_set_txpower(uint8_t power); int cc2420_get_txpower(void); #define CC2420_TXPOWER_MAX 31 #define CC2420_TXPOWER_MIN 0 /** * Interrupt function, called from the simple-cc2420-arch driver. * */ int cc2420_interrupt(void); /* XXX hack: these will be made as Chameleon packet attributes */ extern rtimer_clock_t cc2420_time_of_arrival, cc2420_time_of_departure; extern int cc2420_authority_level_of_sender; int cc2420_on(void); int cc2420_off(void); void cc2420_set_cca_threshold(int value); /************************************************************************/ /* Additional SPI Macros for the CC2420 */ /************************************************************************/ /* Send a strobe to the CC2420 */ #define CC2420_STROBE(s) \ do { \ CC2420_SPI_ENABLE(); \ SPI_WRITE(s); \ CC2420_SPI_DISABLE(); \ } while (0) /* Write to a register in the CC2420 */ /* Note: the SPI_WRITE(0) seems to be needed for getting the */ /* write reg working on the Z1 / MSP430X platform */ #define CC2420_WRITE_REG(adr,data) \ do { \ CC2420_SPI_ENABLE(); \ SPI_WRITE_FAST(adr); \ SPI_WRITE_FAST((uint8_t)((data) >> 8)); \ SPI_WRITE_FAST((uint8_t)(data & 0xff)); \ SPI_WAITFORTx_ENDED(); \ SPI_WRITE(0); \ CC2420_SPI_DISABLE(); \ } while(0) /* Read a register in the CC2420 */ #define CC2420_READ_REG(adr,data) \ do { \ CC2420_SPI_ENABLE(); \ SPI_WRITE(adr | 0x40); \ data = (uint8_t)SPI_RXBUF; \ SPI_TXBUF = 0; \ SPI_WAITFOREORx(); \ data = SPI_RXBUF << 8; \ SPI_TXBUF = 0; \ SPI_WAITFOREORx(); \ data |= SPI_RXBUF; \ CC2420_SPI_DISABLE(); \ } while(0) #define CC2420_READ_FIFO_BYTE(data) \ do { \ CC2420_SPI_ENABLE(); \ SPI_WRITE(CC2420_RXFIFO | 0x40); \ (void)SPI_RXBUF; \ SPI_READ(data); \ clock_delay(1); \ CC2420_SPI_DISABLE(); \ } while(0) #define CC2420_READ_FIFO_BUF(buffer,count) \ do { \ uint8_t i; \ CC2420_SPI_ENABLE(); \ SPI_WRITE(CC2420_RXFIFO | 0x40); \ (void)SPI_RXBUF; \ for(i = 0; i < (count); i++) { \ SPI_READ(((uint8_t *)(buffer))[i]); \ } \ clock_delay(1); \ CC2420_SPI_DISABLE(); \ } while(0) #define CC2420_WRITE_FIFO_BUF(buffer,count) \ do { \ uint8_t i; \ CC2420_SPI_ENABLE(); \ SPI_WRITE_FAST(CC2420_TXFIFO); \ for(i = 0; i < (count); i++) { \ SPI_WRITE_FAST(((uint8_t *)(buffer))[i]); \ } \ SPI_WAITFORTx_ENDED(); \ CC2420_SPI_DISABLE(); \ } while(0) /* Write to RAM in the CC2420 */ #define CC2420_WRITE_RAM(buffer,adr,count) \ do { \ uint8_t i; \ CC2420_SPI_ENABLE(); \ SPI_WRITE_FAST(0x80 | ((adr) & 0x7f)); \ SPI_WRITE_FAST(((adr) >> 1) & 0xc0); \ for(i = 0; i < (count); i++) { \ SPI_WRITE_FAST(((uint8_t*)(buffer))[i]); \ } \ SPI_WAITFORTx_ENDED(); \ CC2420_SPI_DISABLE(); \ } while(0) /* Read from RAM in the CC2420 */ #define CC2420_READ_RAM(buffer,adr,count) \ do { \ uint8_t i; \ CC2420_SPI_ENABLE(); \ SPI_WRITE(0x80 | ((adr) & 0x7f)); \ SPI_WRITE((((adr) >> 1) & 0xc0) | 0x20); \ SPI_RXBUF; \ for(i = 0; i < (count); i++) { \ SPI_READ(((uint8_t*)(buffer))[i]); \ } \ CC2420_SPI_DISABLE(); \ } while(0) /* Read status of the CC2420 */ #define CC2420_GET_STATUS(s) \ do { \ CC2420_SPI_ENABLE(); \ SPI_WRITE(CC2420_SNOP); \ s = SPI_RXBUF; \ CC2420_SPI_DISABLE(); \ } while (0) #endif /* __CC2420_H__ */