osd-contiki/platform/pico-rv32-icoboard/cc2520-arch.h
Ralf Schlatterbeck b87ba1f526 Working ping
Biggest problem was definitions in rtimer_arch.h -- we have a 16-bit
rtimer_clock_t so this was overflowing and not working. Therefore most
delays in the radio implementation didn't work.
2016-05-12 14:00:53 +02:00

108 lines
4 KiB
C

/*
* Copyright (c) 2016, Dr. Ralf Schlatterbeck Open Source Consulting
* 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.
*/
/**
* \file
* Platform configuration for the pico-rv32-icoboard
* Definitions for the radio hardware access
*/
#ifndef RADIO_CONF_H_
#define RADIO_CONF_H_
#include "icosoc.h"
extern void icosoc_cc2520_fifop_irq (void);
/* the low-level radio driver */
#define NETSTACK_CONF_RADIO cc2520_driver
/*
* SPI bus - CC2520 pin configuration.
*/
// Two instructions loop at F_CPU for 326us
#define CC2520_CONF_SYMBOL_LOOP_COUNT (F_CPU / (3067 * 2))
#define CC2520_RESET_SHIFT 0
#define CC2520_CCA_SHIFT 1
/* Pin status.CC2520 */
/* This implementation doesn't have enough pins for CC2520_FIFO_IS_1
* on a separate pin. So we need to explicitly check for FIFO in
* register with a SPI command, this is bit 7 in FSMSTAT1, see p.119 of
* spec.
*/
#define CC2520_FIFOP_IS_1 (!!(icosoc_cc2520_fifop_read()))
#define CC2520_FIFO_IS_1 (!!(getreg(CC2520_FSMSTAT1) & BV(7)))
#define CC2520_SFD_IS_1 (!!(icosoc_cc2520_sfd_read()))
#define CC2520_CCA_IS_1 (!!(icosoc_cc2520_io_get() & (1<<CC2520_CCA_SHIFT)))
/* The CC2520 reset pin. */
#define SET_RESET_INACTIVE() \
(icosoc_cc2520_io_set(icosoc_cc2520_io_get() | (1<<CC2520_RESET_SHIFT)))
#define SET_RESET_ACTIVE() \
(icosoc_cc2520_io_set(icosoc_cc2520_io_get() & (~(1<<CC2520_RESET_SHIFT))))
/* CC2520 voltage regulator enable pin: direct connection to VCC,
we don't have enough pins to turn power on/off and the fpga will
always need full power anyway
*/
#define SET_VREG_ACTIVE()
#define SET_VREG_INACTIVE()
/* CC2520 rising edge trigger for external interrupt 3 (FIFOP). */
#define CC2520_FIFOP_INT_INIT() \
( register_irq(3, icosoc_cc2520_fifop_irq) \
, icosoc_cc2520_fifop_set_config (icosoc_cc2520_fifop_trigger_re) \
, icosoc_cc2520_fifop_read() \
)
/* FIFOP on external interrupt 3. */
#define CC2520_ENABLE_FIFOP_INT() (enable_irq(3))
#define CC2520_DISABLE_FIFOP_INT() (disable_irq(3))
#define CC2520_CLEAR_FIFOP_INT() (icosoc_cc2520_fifop_read())
/*
* Enables/disables CC2520 access to the SPI bus (Chip Select)
*/
// ENABLE CSn (active low)
#define CC2520_SPI_ENABLE() icosoc_cc2520_spi_cs(0)
// DISABLE CSn (active low)
#define CC2520_SPI_DISABLE() icosoc_cc2520_spi_cs(1)
#define CC2520_SPI_IS_ENABLED() icosoc_cc2520_spi_getcs()
#if TIMESYNCH_CONF_ENABLED
#undef CC2520_CONF_SFD_TIMESTAMPS
#define CC2520_CONF_SFD_TIMESTAMPS 1
#endif /* TIMESYNCH_CONF_ENABLED */
#endif /* RADIO_CONF_H_ */