97 lines
3.6 KiB
C
97 lines
3.6 KiB
C
/*
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* Copyright (c) 2016, Dr. Ralf Schlatterbeck Open Source Consulting
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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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/**
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* \file
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* Platform configuration for the pico-rv32-icoboard
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* Definitions for the radio hardware access
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*/
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#ifndef RADIO_CONF_H_
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#define RADIO_CONF_H_
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#include "icosoc.h"
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extern void icosoc_cc2520_fifop_irq (void);
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/* the low-level radio driver */
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#define NETSTACK_CONF_RADIO cc2520_driver
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/*
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* SPI bus - CC2520 pin configuration.
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*/
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// Two instructions loop at F_CPU for 326us
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#define CC2520_CONF_SYMBOL_LOOP_COUNT (F_CPU / (3067 * 2))
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#define CC2520_RESET_SHIFT 0
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#define CC2520_CCA_SHIFT 1
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/* Pin status.CC2520 */
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#define CC2520_FIFOP_IS_1 (!!(icosoc_cc2520_fifop_read()))
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#define CC2520_SFD_IS_1 (!!(icosoc_cc2520_sfd_read()))
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#define CC2520_CCA_IS_1 (!!(icosoc_cc2520_io_get() & (1<<CC2520_CCA_SHIFT)))
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/* The CC2520 reset pin. */
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#define SET_RESET_INACTIVE() \
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(icosoc_cc2520_io_set(icosoc_cc2520_io_get() | (1<<CC2520_RESET_SHIFT)))
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#define SET_RESET_ACTIVE() \
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(icosoc_cc2520_io_set(icosoc_cc2520_io_get() & (~(1<<CC2520_RESET_SHIFT))))
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/* CC2520 voltage regulator enable pin: direct connection to VCC,
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we don't have enough pins to turn power on/off and the fpga will
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always need full power anyway
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*/
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#define SET_VREG_ACTIVE()
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#define SET_VREG_INACTIVE()
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/* CC2520 rising edge trigger for external interrupt 3 (FIFOP). */
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#define CC2520_FIFOP_INT_INIT() \
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( register_irq(3, icosoc_cc2520_fifop_irq) \
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, icosoc_cc2520_fifop_set_config (icosoc_cc2520_fifop_trigger_re) \
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, icosoc_cc2520_fifop_read() \
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)
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/* FIFOP on external interrupt 3. */
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#define CC2520_ENABLE_FIFOP_INT() (enable_irq(3))
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#define CC2520_DISABLE_FIFOP_INT() (disable_irq(3))
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#define CC2520_CLEAR_FIFOP_INT() (icosoc_cc2520_fifop_read())
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/*
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* Enables/disables CC2520 access to the SPI bus (Chip Select)
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*/
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// ENABLE CSn (active low)
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#define CC2520_SPI_ENABLE() icosoc_cc2520_spi_cs(0)
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// DISABLE CSn (active low)
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#define CC2520_SPI_DISABLE() icosoc_cc2520_spi_cs(1)
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#define CC2520_SPI_IS_ENABLED() icosoc_cc2520_spi_getcs()
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#endif /* RADIO_CONF_H_ */
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