489 lines
17 KiB
C
489 lines
17 KiB
C
/****************************************************************************
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* drivers/wireless/ieee802154/xbee/xbee.h
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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#ifndef __DRIVERS_WIRELESS_IEEE802154_XBEE_XBEE_H
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#define __DRIVERS_WIRELESS_IEEE802154_XBEE_XBEE_H
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <stdint.h>
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#include <stdbool.h>
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#include <nuttx/wqueue.h>
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#include <nuttx/semaphore.h>
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#include <nuttx/spi/spi.h>
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#include <nuttx/wireless/ieee802154/ieee802154_mac.h>
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#include <nuttx/wireless/ieee802154/xbee.h>
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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/* Configuration ************************************************************/
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#if !defined(CONFIG_SCHED_HPWORK) || !defined(CONFIG_SCHED_LPWORK)
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# error Both Low and High priority work queues are required for this driver
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#endif
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#ifndef CONFIG_IEEE802154_XBEE_FREQUENCY
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# define CONFIG_IEEE802154_XBEE_FREQUENCY 2000000
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#endif
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#ifndef CONFIG_SPI_EXCHANGE
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# error CONFIG_SPI_EXCHANGE required for this driver
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#endif
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#define XBEE_APIFRAME_MODEMSTATUS 0x8A
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#define XBEE_APIFRAME_ATCOMMMAND 0x08
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#define XBEE_APIFRAME_ATCOMMMANDQUEUED 0x09
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#define XBEE_APIFRAME_ATRESPONSE 0x88
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#define XBEE_APIFRAME_REMOTEREQUEST 0x17
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#define XBEE_APIFRAME_REMOTERESPONSE 0x97
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#define XBEE_APIFRAME_TXREQ_EADDR 0x00
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#define XBEE_APIFRAME_TXREQ_SADDR 0x01
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#define XBEE_APIFRAME_TXSTATUS 0x89
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#define XBEE_APIFRAME_RX_EADDR 0x80
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#define XBEE_APIFRAME_RX_SADDR 0x81
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#define XBEE_APIFRAME_RXIO_EADDR 0x82
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#define XBEE_APIFRAME_RXIO_SADDR 0x83
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#define XBEE_EPASSOCFLAGS_PANID_REASSIGN 1
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#define XBEE_EPASSOCFLAGS_CHAN_REASSIGN 2
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#define XBEE_EPASSOCFLAGS_AUTOASSOC 4
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#define XBEE_EPASSOCFLAGS_POLLONWAKE 8
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#define XBEE_COORDASSOCFLAGS_PANID_REASSIGN 1
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#define XBEE_COORDASSOCFLAGS_CHAN_REASSIGN 2
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#define XBEE_COORDASSOCFLAGS_ALLOWASSOC 4
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/* Size of read buffer active for all of the transaction. i.e. must be big
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* enough to handle full transmit and receive.
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*/
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#define XBEE_RXBUF_SIZE 256
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#define XBEE_STARTBYTE 0x7E
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#define XBEE_APIFRAME_OVERHEAD 4
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#define XBEE_APIFRAMEINDEX_STARTBYTE 0
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#define XBEE_APIFRAMEINDEX_LENGTHMSB 1
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#define XBEE_APIFRAMEINDEX_LENGTHLSB 2
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#define XBEE_APIFRAMEINDEX_TYPE 3
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/****************************************************************************
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* Public Types
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****************************************************************************/
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/* Enumeration of Modem Status values */
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enum xbee_modemstatus_e
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{
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XBEE_MODEMSTATUS_HARDRESET = 0,
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XBEE_MODEMSTATUS_WATCHDOGRESET,
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XBEE_MODEMSTATUS_ASSOCIATED,
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XBEE_MODEMSTATUS_NONETWORK,
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XBEE_MODEMSTATUS_COORD,
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XBEE_MODEMSTATUS_VOLTAGETOOHIGH,
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};
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enum xbee_response_e
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{
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XBEE_RESP_MODEMSTATUS,
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XBEE_RESP_AT_FIRMWAREVERSION,
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XBEE_RESP_AT_HARDWAREVERSION,
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XBEE_RESP_AT_NETWORKID,
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XBEE_RESP_AT_SERIALHIGH,
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XBEE_RESP_AT_SERIALLOW,
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XBEE_RESP_AT_SOURCEADDR,
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XBEE_RESP_AT_CHAN,
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/* Skip some allow for new AT commands */
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};
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struct xbee_respwaiter_s
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{
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FAR struct xbee_respwaiter_s *flink;
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sem_t sem;
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enum xbee_response_e resp_id;
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};
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/* An XBee device instance */
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struct xbee_priv_s
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{
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/* Low-level MCU-specific support */
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FAR const struct xbee_lower_s *lower;
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FAR struct spi_dev_s *spi; /* Saved SPI interface instance */
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/* Fields related to interface with next layer */
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FAR struct xbee_maccb_s *cb; /* Head of a list of XBee MAC callbacks */
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uint8_t nclients; /* Number of registered callbacks */
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FAR struct iob_s *rx_apiframes; /* List of incoming API frames to process */
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struct work_s notifwork; /* For deferring notifications to LPWORK queue */
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struct work_s attnwork; /* For deferring interrupt work to work queue */
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volatile bool attn_latched; /* Latched state of ATTN */
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sem_t primitive_sem; /* Exclusive access to the primitive queue */
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sq_queue_t primitive_queue; /* Queue of primitives to pass via notify()
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* callback to registered receivers */
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struct wdog_s assocwd; /* Association watchdog */
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struct work_s assocwork; /* For polling for association status */
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bool associating; /* Are we currently associating */
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sem_t atquery_sem; /* Only allow one AT query at a time */
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sem_t atresp_sem; /* For signaling pending AT response received */
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char querycmd[2]; /* Stores the pending AT Query command */
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bool querydone; /* Used to tell waiting thread query is done */
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struct wdog_s atquery_wd; /* Support AT Query timeout and retry */
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struct wdog_s reqdata_wd; /* Support send timeout and retry */
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uint8_t frameid; /* For differentiating AT request/response */
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sem_t tx_sem; /* Support a single pending transmit */
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sem_t txdone_sem; /* For signalling tx is completed */
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bool txdone;
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#ifdef CONFIG_XBEE_LOCKUP_WORKAROUND
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struct wdog_s lockup_wd; /* Watchdog to protect for XBee lockup */
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struct work_s lockupwork; /* For deferring lockup query check to LPWORK queue */
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struct work_s backupwork; /* For deferring backing up parameters to LPWORK queue */
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#endif
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/******************* Fields related to Xbee radio *************************/
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uint16_t firmwareversion;
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/************* Fields related to addressing and coordinator ***************/
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/* Holds all address information(Extended, Short, and PAN ID) for the MAC */
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struct ieee802154_addr_s addr;
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struct ieee802154_pandesc_s pandesc;
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/****************** Uncategorized MAC PIB attributes **********************/
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/* What type of device is this node acting as */
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enum ieee802154_devmode_e devmode : 2;
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/****************** PHY attributes ****************************************/
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uint8_t chan;
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uint8_t pwrlvl;
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bool boostmode;
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};
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/****************************************************************************
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* Public Data
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****************************************************************************/
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/****************************************************************************
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* Inline Functions
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****************************************************************************/
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/****************************************************************************
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* Name: xbee_next_frameid
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*
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* Description:
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* Increment the frame id. This is used to coordinate TX requests with
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* subsequent TX status frames received by the XBee device. We must skip
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* value 0 since that value is to tell the XBee not to provide a status
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* response.
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*
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****************************************************************************/
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static inline uint8_t xbee_next_frameid(FAR struct xbee_priv_s *priv)
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{
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priv->frameid++;
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if (priv->frameid == 0)
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{
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priv->frameid = 1;
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}
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return priv->frameid;
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}
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/****************************************************************************
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* Name: xbee_insert_checksum
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*
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* Description:
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* Insert checksum into outbound API frame.
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*
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* Input Parameters:
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* frame - pointer to the frame data
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* framelen - size of the overall frame. NOT the data length field
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*
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****************************************************************************/
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static inline void xbee_insert_checksum(FAR uint8_t *frame,
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uint16_t framelen)
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{
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int i;
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uint8_t checksum = 0;
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DEBUGASSERT(framelen > XBEE_APIFRAME_OVERHEAD);
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/* Skip the start byte and frame length */
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for (i = 3; i < framelen - 1; i++)
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{
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checksum += frame[i];
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}
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frame[framelen - 1] = 0xff - checksum;
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}
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/****************************************************************************
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* Public Function Prototypes
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****************************************************************************/
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/****************************************************************************
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* Name: xbee_send_apiframe
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*
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* Description:
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* Write an api frame over SPI
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*
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****************************************************************************/
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void xbee_send_apiframe(FAR struct xbee_priv_s *priv,
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FAR const uint8_t *frame, uint16_t framelen);
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/****************************************************************************
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* Name: xbee_atquery
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*
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* Description:
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* Sends AT Query and waits for response from device
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*
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****************************************************************************/
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int xbee_atquery(FAR struct xbee_priv_s *priv, FAR const char *atcommand);
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/****************************************************************************
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* Name: xbee_send_atquery
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*
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* Description:
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* Helper function to send the AT query to the XBee
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*
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****************************************************************************/
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void xbee_send_atquery(FAR struct xbee_priv_s *priv,
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FAR const char *atcommand);
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/****************************************************************************
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* Name: xbee_query_firmwareversion
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*
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* Description:
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* Sends API frame with AT command request in order to get the firmware
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* version from the device.
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*
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****************************************************************************/
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#define xbee_query_firmwareversion(priv) xbee_atquery(priv, "VR")
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/****************************************************************************
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* Name: xbee_query_panid
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*
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* Description:
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* Sends API frame with AT command request in order to get the PAN ID
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* (Network ID) from the device.
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*
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****************************************************************************/
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#define xbee_query_panid(priv) xbee_atquery(priv, "ID")
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/****************************************************************************
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* Name: xbee_query_eaddr
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*
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* Description:
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* Sends API frame with AT command request in order to get the IEEE
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* 802.15.4 Extended Address. (Serial Number) from the device.
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*
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****************************************************************************/
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#define xbee_query_eaddr(priv) xbee_atquery(priv, "SH"); \
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xbee_atquery(priv, "SL")
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/****************************************************************************
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* Name: xbee_query_saddr
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*
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* Description:
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* Sends API frame with AT command request in order to get the
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* Short Address. (Source Address (MY)) from the device.
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*
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****************************************************************************/
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#define xbee_query_saddr(priv) xbee_atquery(priv, "MY")
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/****************************************************************************
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* Name: xbee_query_chan
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*
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* Description:
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* Sends API frame with AT command request in order to get the RF Channel
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* (Operating Channel) from the device.
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*
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****************************************************************************/
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#define xbee_query_chan(priv) xbee_atquery(priv, "CH")
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/****************************************************************************
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* Name: xbee_query_powerlevel
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*
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* Description:
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* Sends API frame with AT command request in order to get the RF Power
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* Level from the device.
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*
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****************************************************************************/
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#define xbee_query_powerlevel(priv) xbee_atquery(priv, "PL")
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/****************************************************************************
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* Name: xbee_query_powermode
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*
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* Description:
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* Sends API frame with AT command request in order to get the RF Power
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* Mode from the device.
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*
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****************************************************************************/
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#define xbee_query_powermode(priv) xbee_atquery(priv, "PM")
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/****************************************************************************
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* Name: xbee_query_assoc
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*
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* Description:
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* Sends API frame with AT command request in order to get the association
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* status (Association Indication) of the device
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*
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****************************************************************************/
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#define xbee_query_assoc(priv) xbee_atquery(priv, "AI")
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/****************************************************************************
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* Name: xbee_save_params
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*
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* Description:
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* Sends API frame with AT command request to write current parameters to
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* non-volatile memory so that they are used after next reset.
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*
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****************************************************************************/
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#define xbee_save_params(priv) xbee_atquery(priv, "WR")
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/****************************************************************************
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* Name: xbee_set_panid
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*
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* Description:
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* Sends API frame with AT command request in order to set the PAN ID
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* (Network ID) of the device.
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*
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****************************************************************************/
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void xbee_set_panid(FAR struct xbee_priv_s *priv, FAR const uint8_t *panid);
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/****************************************************************************
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* Name: xbee_set_saddr
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*
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* Description:
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* Sends API frame with AT command request in order to set the Short
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* Address (Source Address (MY)) of the device
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*
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****************************************************************************/
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void xbee_set_saddr(FAR struct xbee_priv_s *priv, FAR const uint8_t *saddr);
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/****************************************************************************
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* Name: xbee_set_chan
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*
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* Description:
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* Sends API frame with AT command request in order to set the RF channel
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* (Operatin Channel) of the device.
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*
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****************************************************************************/
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void xbee_set_chan(FAR struct xbee_priv_s *priv, uint8_t chan);
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/****************************************************************************
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* Name: xbee_set_powerlevel
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*
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* Description:
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* Sends API frame with AT command request in order to set the RF power
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* level of the device.
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*
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****************************************************************************/
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void xbee_set_powerlevel(FAR struct xbee_priv_s *priv, uint8_t level);
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/****************************************************************************
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* Name: xbee_set_epassocflags
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*
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* Description:
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* Set flags in 'A1' command register to determine how endpoint behaves
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* with regards to association.
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*
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****************************************************************************/
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void xbee_set_epassocflags(FAR struct xbee_priv_s *priv, uint8_t flags);
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/****************************************************************************
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* Name: xbee_set_coordassocflags
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*
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* Description:
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* Set flags in 'AT' command register to determine how coordinator behaves
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* with regards to association.
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*
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****************************************************************************/
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void xbee_set_coordassocflags(FAR struct xbee_priv_s *priv, uint8_t flags);
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/****************************************************************************
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* Name: xbee_set_sleepperiod
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*
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* Description:
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* Set Cyclic Sleep Period using 'SP' AT command.
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*
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****************************************************************************/
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void xbee_set_sleepperiod(FAR struct xbee_priv_s *priv, uint16_t period);
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/****************************************************************************
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* Name: xbee_enable_coord
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*
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* Description:
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* Enables/Disables coordinator mode using 'CE' command
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*
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****************************************************************************/
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void xbee_enable_coord(FAR struct xbee_priv_s *priv, bool enable);
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/****************************************************************************
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* Name: xbee_regdump
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*
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* Description:
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* Perform a series of queries updating struct and printing settings.
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*
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****************************************************************************/
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void xbee_regdump(FAR struct xbee_priv_s *priv);
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#endif /* __DRIVERS_WIRELESS_IEEE802154_XBEE_XBEE_H */
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