442 lines
19 KiB
C
442 lines
19 KiB
C
/*
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* Copyright (c) 2015, Texas Instruments Incorporated - http://www.ti.com/
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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 copyright holder nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* 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,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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* OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/*---------------------------------------------------------------------------*/
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/**
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* \addtogroup cc26xx
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* @{
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*
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* \defgroup rf-core CC13xx/CC26xx RF core
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*
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* Different flavours of chips of the CC13xx/CC26xx family have different
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* radio capability. For example, the CC2650 can operate in IEEE 802.15.4 mode
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* at 2.4GHz, but it can also operate in BLE mode. The CC1310 only supports
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* sub-ghz mode.
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*
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* However, there are many radio functionalities that are identical across
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* all chips. The rf-core driver provides support for this common functionality
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*
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* @{
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*
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* \file
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* Header file for the CC13xx/CC26xx RF core driver
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*/
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/*---------------------------------------------------------------------------*/
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#ifndef RF_CORE_H_
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#define RF_CORE_H_
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/*---------------------------------------------------------------------------*/
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#include "contiki-conf.h"
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#include "driverlib/rf_common_cmd.h"
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#include <stdint.h>
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#include <stdbool.h>
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/*---------------------------------------------------------------------------*/
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/* The channel to use in IEEE or prop mode. */
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#ifdef RF_CORE_CONF_CHANNEL
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#define RF_CORE_CHANNEL RF_CORE_CONF_CHANNEL
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#else
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#define RF_CORE_CHANNEL 25
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#endif /* RF_CORE_CONF_IEEE_MODE_CHANNEL */
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/*---------------------------------------------------------------------------*/
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#define RF_CORE_CMD_ERROR 0
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#define RF_CORE_CMD_OK 1
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/*---------------------------------------------------------------------------*/
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/**
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* \brief A data strcuture representing the radio's primary mode of operation
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*
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* The CC13xx / CC26xx radio supports up to potentially 3 modes: IEEE, Prop and
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* BLE. Within Contiki, we assume that the radio is by default in one of IEEE
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* or Prop in order to support standard 6LoWPAN / .15.4 operation. The BLE
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* mode interrupts this so called "primary" mode in order to send BLE adv
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* messages. Once BLE is done advertising, we need to be able to restore the
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* previous .15.4 mode. Unfortunately, the only way this can be done with
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* NETSTACK_RADIO API is by fully power-cycling the radio, which is something
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* we do not want to do.
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*
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* Thus, we declare a secondary data structure for primary mode drivers (IEEE
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* or Prop). We use this data structure to issue "soft off" and "back on"
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* commands. Soft off in this context means stopping RX (e.g. the respective
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* IEEE RX operation), but without shutting down the RF core (which is what
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* NETSTACK_RADIO.off() would have done). We then remember what mode we were
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* using in order to be able to re-enter RX mode for this mode.
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*
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* A NETSTACK_RADIO driver will declare those two functions somewhere within
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* its module of implementation. During its init() routine, it will notify
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* the RF core module so that the latter can abort and restore operations.
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*/
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typedef struct rf_core_primary_mode_s {
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/**
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* \brief A pointer to a function used to abort the current radio op
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*/
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void (*abort)(void);
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/**
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* \brief A pointer to a function that will restore the previous radio op
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* \return RF_CORE_CMD_OK or RF_CORE_CMD_ERROR
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*/
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uint8_t (*restore)(void);
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} rf_core_primary_mode_t;
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/*---------------------------------------------------------------------------*/
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/* RF Command status constants - Correspond to values in the CMDSTA register */
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#define RF_CORE_CMDSTA_PENDING 0x00
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#define RF_CORE_CMDSTA_DONE 0x01
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#define RF_CORE_CMDSTA_ILLEGAL_PTR 0x81
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#define RF_CORE_CMDSTA_UNKNOWN_CMD 0x82
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#define RF_CORE_CMDSTA_UNKNOWN_DIR_CMD 0x83
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#define RF_CORE_CMDSTA_CONTEXT_ERR 0x85
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#define RF_CORE_CMDSTA_SCHEDULING_ERR 0x86
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#define RF_CORE_CMDSTA_PAR_ERR 0x87
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#define RF_CORE_CMDSTA_QUEUE_ERR 0x88
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#define RF_CORE_CMDSTA_QUEUE_BUSY 0x89
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/* Status values starting with 0x8 correspond to errors */
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#define RF_CORE_CMDSTA_ERR_MASK 0x80
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/* CMDSTA is 32-bits. Return value in bits 7:0 */
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#define RF_CORE_CMDSTA_RESULT_MASK 0xFF
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#define RF_CORE_RADIO_OP_STATUS_IDLE 0x0000
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/*---------------------------------------------------------------------------*/
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#define RF_CORE_NOT_ACCESSIBLE 0x00
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#define RF_CORE_ACCESSIBLE 0x01
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/*---------------------------------------------------------------------------*/
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/* RF Radio Op status constants. Field 'status' in Radio Op command struct */
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#define RF_CORE_RADIO_OP_STATUS_IDLE 0x0000
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#define RF_CORE_RADIO_OP_STATUS_PENDING 0x0001
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#define RF_CORE_RADIO_OP_STATUS_ACTIVE 0x0002
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#define RF_CORE_RADIO_OP_STATUS_SKIPPED 0x0003
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#define RF_CORE_RADIO_OP_STATUS_DONE_OK 0x0400
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#define RF_CORE_RADIO_OP_STATUS_DONE_COUNTDOWN 0x0401
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#define RF_CORE_RADIO_OP_STATUS_DONE_RXERR 0x0402
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#define RF_CORE_RADIO_OP_STATUS_DONE_TIMEOUT 0x0403
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#define RF_CORE_RADIO_OP_STATUS_DONE_STOPPED 0x0404
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#define RF_CORE_RADIO_OP_STATUS_DONE_ABORT 0x0405
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#define RF_CORE_RADIO_OP_STATUS_ERROR_PAST_START 0x0800
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#define RF_CORE_RADIO_OP_STATUS_ERROR_START_TRIG 0x0801
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#define RF_CORE_RADIO_OP_STATUS_ERROR_CONDITION 0x0802
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#define RF_CORE_RADIO_OP_STATUS_ERROR_PAR 0x0803
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#define RF_CORE_RADIO_OP_STATUS_ERROR_POINTER 0x0804
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#define RF_CORE_RADIO_OP_STATUS_ERROR_CMDID 0x0805
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#define RF_CORE_RADIO_OP_STATUS_ERROR_NO_SETUP 0x0807
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#define RF_CORE_RADIO_OP_STATUS_ERROR_NO_FS 0x0808
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#define RF_CORE_RADIO_OP_STATUS_ERROR_SYNTH_PROG 0x0809
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/* Additional Op status values for IEEE mode */
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#define RF_CORE_RADIO_OP_STATUS_IEEE_SUSPENDED 0x2001
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#define RF_CORE_RADIO_OP_STATUS_IEEE_DONE_OK 0x2400
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#define RF_CORE_RADIO_OP_STATUS_IEEE_DONE_BUSY 0x2401
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#define RF_CORE_RADIO_OP_STATUS_IEEE_DONE_STOPPED 0x2402
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#define RF_CORE_RADIO_OP_STATUS_IEEE_DONE_ACK 0x2403
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#define RF_CORE_RADIO_OP_STATUS_IEEE_DONE_ACKPEND 0x2404
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#define RF_CORE_RADIO_OP_STATUS_IEEE_DONE_TIMEOUT 0x2405
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#define RF_CORE_RADIO_OP_STATUS_IEEE_DONE_BGEND 0x2406
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#define RF_CORE_RADIO_OP_STATUS_IEEE_DONE_ABORT 0x2407
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#define RF_CORE_RADIO_OP_STATUS_ERROR_WRONG_BG 0x0806
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#define RF_CORE_RADIO_OP_STATUS_IEEE_ERROR_PAR 0x2800
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#define RF_CORE_RADIO_OP_STATUS_IEEE_ERROR_NO_SETUP 0x2801
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#define RF_CORE_RADIO_OP_STATUS_IEEE_ERROR_NO_FS 0x2802
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#define RF_CORE_RADIO_OP_STATUS_IEEE_ERROR_SYNTH_PROG 0x2803
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#define RF_CORE_RADIO_OP_STATUS_IEEE_ERROR_RXOVF 0x2804
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#define RF_CORE_RADIO_OP_STATUS_IEEE_ERROR_TXUNF 0x2805
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/* Op status values for BLE mode */
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#define RF_CORE_RADIO_OP_STATUS_BLE_DONE_OK 0x1400
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#define RF_CORE_RADIO_OP_STATUS_BLE_DONE_RXTIMEOUT 0x1401
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#define RF_CORE_RADIO_OP_STATUS_BLE_DONE_NOSYNC 0x1402
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#define RF_CORE_RADIO_OP_STATUS_BLE_DONE_RXERR 0x1403
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#define RF_CORE_RADIO_OP_STATUS_BLE_DONE_CONNECT 0x1404
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#define RF_CORE_RADIO_OP_STATUS_BLE_DONE_MAXNACK 0x1405
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#define RF_CORE_RADIO_OP_STATUS_BLE_DONE_ENDED 0x1406
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#define RF_CORE_RADIO_OP_STATUS_BLE_DONE_ABORT 0x1407
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#define RF_CORE_RADIO_OP_STATUS_BLE_DONE_STOPPED 0x1408
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#define RF_CORE_RADIO_OP_STATUS_BLE_ERROR_PAR 0x1800
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#define RF_CORE_RADIO_OP_STATUS_BLE_ERROR_RXBUF 0x1801
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#define RF_CORE_RADIO_OP_STATUS_BLE_ERROR_NO_SETUP 0x1802
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#define RF_CORE_RADIO_OP_STATUS_BLE_ERROR_NO_FS 0x1803
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#define RF_CORE_RADIO_OP_STATUS_BLE_ERROR_SYNTH_PROG 0x1804
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#define RF_CORE_RADIO_OP_STATUS_BLE_ERROR_RXOVF 0x1805
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#define RF_CORE_RADIO_OP_STATUS_BLE_ERROR_TXUNF 0x1806
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/* Op status values for proprietary mode */
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#define RF_CORE_RADIO_OP_STATUS_PROP_DONE_OK 0x3400
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#define RF_CORE_RADIO_OP_STATUS_PROP_DONE_RXTIMEOUT 0x3401
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#define RF_CORE_RADIO_OP_STATUS_PROP_DONE_BREAK 0x3402
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#define RF_CORE_RADIO_OP_STATUS_PROP_DONE_ENDED 0x3403
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#define RF_CORE_RADIO_OP_STATUS_PROP_DONE_STOPPED 0x3404
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#define RF_CORE_RADIO_OP_STATUS_PROP_DONE_ABORT 0x3405
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#define RF_CORE_RADIO_OP_STATUS_PROP_DONE_RXERR 0x3406
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#define RF_CORE_RADIO_OP_STATUS_PROP_DONE_IDLE 0x3407
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#define RF_CORE_RADIO_OP_STATUS_PROP_DONE_BUSY 0x3408
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#define RF_CORE_RADIO_OP_STATUS_PROP_DONE_IDLETIMEOUT 0x3409
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#define RF_CORE_RADIO_OP_STATUS_PROP_DONE_BUSYTIMEOUT 0x340A
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#define RF_CORE_RADIO_OP_STATUS_PROP_ERROR_PAR 0x3800
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#define RF_CORE_RADIO_OP_STATUS_PROP_ERROR_RXBUF 0x3801
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#define RF_CORE_RADIO_OP_STATUS_PROP_ERROR_RXFULL 0x3802
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#define RF_CORE_RADIO_OP_STATUS_PROP_ERROR_NO_SETUP 0x3803
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#define RF_CORE_RADIO_OP_STATUS_PROP_ERROR_NO_FS 0x3804
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#define RF_CORE_RADIO_OP_STATUS_PROP_ERROR_RXOVF 0x3805
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#define RF_CORE_RADIO_OP_STATUS_PROP_ERROR_TXUNF 0x3806
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/* Bits 15:12 signify the protocol */
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#define RF_CORE_RADIO_OP_STATUS_PROTO_MASK 0xF000
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#define RF_CORE_RADIO_OP_STATUS_PROTO_GENERIC 0x0000
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#define RF_CORE_RADIO_OP_STATUS_PROTO_BLE 0x1000
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#define RF_CORE_RADIO_OP_STATUS_PROTO_IEEE 0x2000
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#define RF_CORE_RADIO_OP_STATUS_PROTO_PROP 0x3000
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/* Bits 11:10 signify Running / Done OK / Done with error */
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#define RF_CORE_RADIO_OP_MASKED_STATUS 0x0C00
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#define RF_CORE_RADIO_OP_MASKED_STATUS_RUNNING 0x0000
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#define RF_CORE_RADIO_OP_MASKED_STATUS_DONE 0x0400
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#define RF_CORE_RADIO_OP_MASKED_STATUS_ERROR 0x0800
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/*---------------------------------------------------------------------------*/
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/* Command Types */
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#define RF_CORE_COMMAND_TYPE_MASK 0x0C00
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#define RF_CORE_COMMAND_TYPE_RADIO_OP 0x0800
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#define RF_CORE_COMMAND_TYPE_IEEE_BG_RADIO_OP 0x0800
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#define RF_CORE_COMMAND_TYPE_IEEE_FG_RADIO_OP 0x0C00
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#define RF_CORE_COMMAND_PROTOCOL_MASK 0x3000
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#define RF_CORE_COMMAND_PROTOCOL_COMMON 0x0000
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#define RF_CORE_COMMAND_PROTOCOL_BLE 0x1000
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#define RF_CORE_COMMAND_PROTOCOL_IEEE 0x2000
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#define RF_CORE_COMMAND_PROTOCOL_PROP 0x3000
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/*---------------------------------------------------------------------------*/
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/* Radio timer register */
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#define RATCNT 0x00000004
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/*---------------------------------------------------------------------------*/
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/* Make the main driver process visible to mode drivers */
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PROCESS_NAME(rf_core_process);
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/*---------------------------------------------------------------------------*/
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/**
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* \brief Check whether the RF core is accessible
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* \retval RF_CORE_ACCESSIBLE The core is powered and ready for access
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* \retval RF_CORE_NOT_ACCESSIBLE The core is not ready
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*
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* If this function returns RF_CORE_NOT_ACCESSIBLE, rf_core_power_up() must be
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* called before any attempt to access the core.
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*/
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uint8_t rf_core_is_accessible(void);
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/**
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* \brief Sends a command to the RF core.
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*
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* \param cmd The command value or a pointer to a command buffer
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* \param status A pointer to a variable which will hold the status
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* \return RF_CORE_CMD_OK or RF_CORE_CMD_ERROR
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*
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* This function supports all three types of command (Radio OP, immediate and
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* direct)
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*
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* For immediate and Radio OPs, cmd is a pointer to the data structure
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* containing the command and its parameters. This data structure must be
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* 4-byte aligned.
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*
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* For direct commands, cmd contains the value of the command alongside its
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* parameters. This value will be written to CMDSTA verbatim, so the command
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* ID must be in the 16 high bits, and the 2 LS bits must be set to 01 by the
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* caller.
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*
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* The caller is responsible of allocating and populating cmd for Radio OP and
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* immediate commands
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*
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* The caller is responsible for allocating status
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*
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* For immediate commands and radio Ops, this function will set the command's
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* status field to RF_CORE_RADIO_OP_STATUS_IDLE before sending it to the RF
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*/
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uint_fast8_t rf_core_send_cmd(uint32_t cmd, uint32_t *status);
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/**
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* \brief Block and wait for a Radio op to complete
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* \param cmd A pointer to any command's structure
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* \retval RF_CORE_CMD_OK the command completed with status _DONE_OK
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* \retval RF_CORE_CMD_ERROR Timeout exceeded or the command completed with
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* status _DONE_xxx (e.g. RF_CORE_RADIO_OP_STATUS_DONE_TIMEOUT)
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*/
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uint_fast8_t rf_core_wait_cmd_done(void *cmd);
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/**
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* \brief Turn on power to the RFC and boot it.
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* \return RF_CORE_CMD_OK or RF_CORE_CMD_ERROR
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*/
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int rf_core_power_up(void);
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/**
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* \brief Disable RFCORE clock domain in the MCU VD and turn off the RFCORE PD
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*/
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void rf_core_power_down(void);
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/**
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* \brief Initialise RF APIs in the RF core
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* \return RF_CORE_CMD_OK or RF_CORE_CMD_ERROR
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*
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* Depending on chip family and capability, this function will set the correct
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* value to PRCM.RFCMODESEL
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*/
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uint8_t rf_core_set_modesel(void);
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/**
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* \brief Start the CM0 RAT
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* \return RF_CORE_CMD_OK or RF_CORE_CMD_ERROR
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*
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* This function must be called each time the CM0 boots. The boot sequence
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* can be performed automatically by calling rf_core_boot() if patches are not
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* required. If patches are required then the patches must be applied after
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* power up and before calling this function.
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*/
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uint8_t rf_core_start_rat(void);
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/**
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* \brief Stop the CM0 RAT synchronously
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* \return RF_CORE_CMD_OK or RF_CORE_CMD_ERROR
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*
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* This function is not strictly necessary, but through calling it it's possibly
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* to learn the RAT / RTC offset, which useful to get accurate radio timestamps.
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*/
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uint8_t rf_core_stop_rat(void);
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/**
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* \brief Restart the CM0 RAT
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* \return RF_CORE_CMD_OK or RF_CORE_CMD_ERROR
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*
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* This function restarts the CM0 RAT and therefore resynchornizes it with RTC.
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* To achieve good timing accuracy, it should be called periodically.
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*/
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uint8_t rf_core_restart_rat(void);
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/**
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* \brief Boot the RF Core
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* \return RF_CORE_CMD_OK or RF_CORE_CMD_ERROR
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*
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* This function will perform the CM0 boot sequence. It will first power it up
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* and then start the RAT. If a patch is required, then the mode driver must
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* not call this function and perform the sequence manually, applying patches
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* after boot and before calling rf_core_start_rat().
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*
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* The function will return RF_CORE_CMD_ERROR if any of those steps fails. If
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* the boot sequence fails to complete, the RF Core will be powered down.
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*/
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uint8_t rf_core_boot(void);
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/**
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* \brief Setup RF core interrupts
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*/
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void rf_core_setup_interrupts(bool poll_mode);
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/**
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* \brief Enable interrupt on command done.
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* \param fg set true to enable irq on foreground command done and false for
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* background commands or if not in ieee mode.
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* \param poll_mode true if the driver is in poll mode
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*
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* This is used within TX routines in order to be able to sleep the CM3 and
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* wake up after TX has finished
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*
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* \sa rf_core_cmd_done_dis()
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*/
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void rf_core_cmd_done_en(bool fg, bool poll_mode);
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/**
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* \brief Disable the LAST_CMD_DONE and LAST_FG_CMD_DONE interrupts.
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*
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* This is used within TX routines after TX has completed
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*
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* \sa rf_core_cmd_done_en()
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*/
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void rf_core_cmd_done_dis(bool poll_mode);
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/**
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* \brief Returns a pointer to the most recent proto-dependent Radio Op
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* \return The pointer
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*
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* The RF Core driver will remember the most recent proto-dependent Radio OP
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* issued, so that other modules can inspect its type and state at a subsequent
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* stage. The assumption is that those commands will be issued by a function
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* that will then return. The following commands will be "remembered"
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*
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* - All BLE Radio Ops (0x18nn)
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* - All Prop Radio Ops (0x38nn)
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* - IEEE BG Radio Ops (0x28nn)
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*
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* The following commands are assumed to be executed synchronously and will
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* thus not be remembered by the core and not returned by this function:
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*
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* - Direct commands
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* - Proto-independent commands (including Radio Ops and Immediate ones)
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* - IEEE FG Radio Ops (0x2Cxx)
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*
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* This assumes that all commands will be sent to the radio using
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* rf_core_send_cmd()
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*/
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rfc_radioOp_t *rf_core_get_last_radio_op(void);
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/**
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* \brief Prepare a buffer to host a Radio Op
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* \param buf A pointer to the buffer that will host the Radio Op
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* \param len The buffer's length
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* \param command The command ID
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*
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* The caller is responsible to allocate the buffer
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*
|
|
* This function will not check whether the buffer is large enough to hold the
|
|
* command. This is the caller's responsibility
|
|
*
|
|
* This function will wipe out the buffer's contents.
|
|
*/
|
|
void rf_core_init_radio_op(rfc_radioOp_t *buf, uint16_t len, uint16_t command);
|
|
|
|
/**
|
|
* \brief Register a primary mode for radio operation
|
|
* \param mode A pointer to the struct representing the mode
|
|
*
|
|
* A normal NESTACK_RADIO driver will normally register itself by calling
|
|
* this function during its own init().
|
|
*
|
|
* \sa rf_core_primary_mode_t
|
|
*/
|
|
void rf_core_primary_mode_register(const rf_core_primary_mode_t *mode);
|
|
|
|
/**
|
|
* \brief Abort the currently running primary radio op
|
|
*/
|
|
void rf_core_primary_mode_abort(void);
|
|
|
|
/**
|
|
* \brief Abort the currently running primary radio op
|
|
*/
|
|
uint8_t rf_core_primary_mode_restore(void);
|
|
/*---------------------------------------------------------------------------*/
|
|
#endif /* RF_CORE_H_ */
|
|
/*---------------------------------------------------------------------------*/
|
|
/**
|
|
* @}
|
|
* @}
|
|
*/
|