mirror of
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976 lines
30 KiB
C
976 lines
30 KiB
C
/*
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* Copyright (c) 2014, 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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* \addtogroup cc26xx-web-demo
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* @{
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*
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* \file
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* MQTT/IBM cloud service client for the CC26XX web demo.
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*/
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/*---------------------------------------------------------------------------*/
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#include "contiki-conf.h"
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#include "rpl/rpl-private.h"
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#include "mqtt.h"
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#include "net/rpl/rpl.h"
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#include "net/ip/uip.h"
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#include "net/ipv6/uip-icmp6.h"
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#include "net/ipv6/sicslowpan.h"
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#include "sys/etimer.h"
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#include "sys/ctimer.h"
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#include "lib/sensors.h"
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#include "button-sensor.h"
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#include "board-peripherals.h"
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#include "cc26xx-web-demo.h"
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#include "dev/leds.h"
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#include "mqtt-client.h"
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#include "httpd-simple.h"
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#include <string.h>
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#include <strings.h>
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/*---------------------------------------------------------------------------*/
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/*
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* IBM server: messaging.quickstart.internetofthings.ibmcloud.com
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* (184.172.124.189) mapped in an NAT64 (prefix 64:ff9b::/96) IPv6 address
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* Note: If not able to connect; lookup the IP address again as it may change.
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*
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* If the node has a broker IP setting saved on flash, this value here will
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* get ignored
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*/
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static const char *broker_ip = "0064:ff9b:0000:0000:0000:0000:b8ac:7cbd";
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/*---------------------------------------------------------------------------*/
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/*
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* A timeout used when waiting for something to happen (e.g. to connect or to
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* disconnect)
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*/
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#define STATE_MACHINE_PERIODIC (CLOCK_SECOND >> 1)
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/*---------------------------------------------------------------------------*/
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/* Provide visible feedback via LEDS during various states */
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/* When connecting to broker */
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#define CONNECTING_LED_DURATION (CLOCK_SECOND >> 3)
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/* Each time we try to publish */
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#define PUBLISH_LED_ON_DURATION (CLOCK_SECOND)
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/*---------------------------------------------------------------------------*/
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/* Connections and reconnections */
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#define RETRY_FOREVER 0xFF
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#define RECONNECT_INTERVAL (CLOCK_SECOND * 2)
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/*
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* Number of times to try reconnecting to the broker.
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* Can be a limited number (e.g. 3, 10 etc) or can be set to RETRY_FOREVER
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*/
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#define RECONNECT_ATTEMPTS RETRY_FOREVER
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#define CONNECTION_STABLE_TIME (CLOCK_SECOND * 5)
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#define NEW_CONFIG_WAIT_INTERVAL (CLOCK_SECOND * 20)
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static struct timer connection_life;
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static uint8_t connect_attempt;
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/*---------------------------------------------------------------------------*/
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/* Various states */
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static uint8_t state;
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#define MQTT_CLIENT_STATE_INIT 0
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#define MQTT_CLIENT_STATE_REGISTERED 1
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#define MQTT_CLIENT_STATE_CONNECTING 2
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#define MQTT_CLIENT_STATE_CONNECTED 3
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#define MQTT_CLIENT_STATE_PUBLISHING 4
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#define MQTT_CLIENT_STATE_DISCONNECTED 5
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#define MQTT_CLIENT_STATE_NEWCONFIG 6
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#define MQTT_CLIENT_STATE_CONFIG_ERROR 0xFE
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#define MQTT_CLIENT_STATE_ERROR 0xFF
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/*---------------------------------------------------------------------------*/
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/* Maximum TCP segment size for outgoing segments of our socket */
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#define MQTT_CLIENT_MAX_SEGMENT_SIZE 32
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/*---------------------------------------------------------------------------*/
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/*
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* Buffers for Client ID and Topic.
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* Make sure they are large enough to hold the entire respective string
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*
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* d:quickstart:status:EUI64 is 32 bytes long
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* iot-2/evt/status/fmt/json is 25 bytes
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* We also need space for the null termination
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*/
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#define BUFFER_SIZE 64
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static char client_id[BUFFER_SIZE];
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static char pub_topic[BUFFER_SIZE];
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static char sub_topic[BUFFER_SIZE];
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/*---------------------------------------------------------------------------*/
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/*
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* The main MQTT buffers.
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* We will need to increase if we start publishing more data.
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*/
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#define APP_BUFFER_SIZE 512
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static struct mqtt_connection conn;
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static char app_buffer[APP_BUFFER_SIZE];
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/*---------------------------------------------------------------------------*/
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#define QUICKSTART "quickstart"
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/*---------------------------------------------------------------------------*/
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static struct mqtt_message *msg_ptr = 0;
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static struct etimer publish_periodic_timer;
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static struct ctimer ct;
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static char *buf_ptr;
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static uint16_t seq_nr_value = 0;
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/*---------------------------------------------------------------------------*/
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static uip_ip6addr_t def_route;
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/*---------------------------------------------------------------------------*/
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/* Parent RSSI functionality */
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static struct uip_icmp6_echo_reply_notification echo_reply_notification;
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static struct etimer echo_request_timer;
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int def_rt_rssi = 0;
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/*---------------------------------------------------------------------------*/
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const static cc26xx_web_demo_sensor_reading_t *reading;
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/*---------------------------------------------------------------------------*/
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mqtt_client_config_t *conf;
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/*---------------------------------------------------------------------------*/
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PROCESS(mqtt_client_process, "CC26XX MQTT Client");
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/*---------------------------------------------------------------------------*/
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static void
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publish_led_off(void *d)
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{
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leds_off(CC26XX_WEB_DEMO_STATUS_LED);
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}
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/*---------------------------------------------------------------------------*/
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static void
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new_net_config(void)
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{
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/*
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* We got a new configuration over the net.
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*
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* Disconnect from the current broker and stop the periodic timer.
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*
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* When the source of the new configuration is done, we will get notified
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* via an event.
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*/
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if(state == MQTT_CLIENT_STATE_NEWCONFIG) {
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return;
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}
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state = MQTT_CLIENT_STATE_NEWCONFIG;
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etimer_stop(&publish_periodic_timer);
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mqtt_disconnect(&conn);
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}
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/*---------------------------------------------------------------------------*/
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static int
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org_id_post_handler(char *key, int key_len, char *val, int val_len)
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{
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int rv = HTTPD_SIMPLE_POST_HANDLER_UNKNOWN;
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if(key_len != strlen("org_id") ||
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strncasecmp(key, "org_id", strlen("org_id")) != 0) {
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/* Not ours */
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return HTTPD_SIMPLE_POST_HANDLER_UNKNOWN;
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}
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if(val_len > MQTT_CLIENT_CONFIG_ORG_ID_LEN) {
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/* Ours but bad value */
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rv = HTTPD_SIMPLE_POST_HANDLER_ERROR;
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} else {
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memset(conf->org_id, 0, MQTT_CLIENT_CONFIG_ORG_ID_LEN);
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memcpy(conf->org_id, val, val_len);
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rv = HTTPD_SIMPLE_POST_HANDLER_OK;
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}
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new_net_config();
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return rv;
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}
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/*---------------------------------------------------------------------------*/
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static int
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type_id_post_handler(char *key, int key_len, char *val, int val_len)
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{
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int rv = HTTPD_SIMPLE_POST_HANDLER_UNKNOWN;
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if(key_len != strlen("type_id") ||
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strncasecmp(key, "type_id", strlen("type_id")) != 0) {
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/* Not ours */
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return HTTPD_SIMPLE_POST_HANDLER_UNKNOWN;
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}
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if(val_len > MQTT_CLIENT_CONFIG_TYPE_ID_LEN) {
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/* Ours but bad value */
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rv = HTTPD_SIMPLE_POST_HANDLER_ERROR;
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} else {
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memset(conf->type_id, 0, MQTT_CLIENT_CONFIG_TYPE_ID_LEN);
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memcpy(conf->type_id, val, val_len);
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rv = HTTPD_SIMPLE_POST_HANDLER_OK;
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}
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new_net_config();
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return rv;
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}
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/*---------------------------------------------------------------------------*/
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static int
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event_type_id_post_handler(char *key, int key_len, char *val, int val_len)
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{
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int rv = HTTPD_SIMPLE_POST_HANDLER_UNKNOWN;
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if(key_len != strlen("event_type_id") ||
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strncasecmp(key, "event_type_id", strlen("event_type_id")) != 0) {
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/* Not ours */
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return HTTPD_SIMPLE_POST_HANDLER_UNKNOWN;
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}
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if(val_len > MQTT_CLIENT_CONFIG_EVENT_TYPE_ID_LEN) {
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/* Ours but bad value */
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rv = HTTPD_SIMPLE_POST_HANDLER_ERROR;
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} else {
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memset(conf->event_type_id, 0, MQTT_CLIENT_CONFIG_EVENT_TYPE_ID_LEN);
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memcpy(conf->event_type_id, val, val_len);
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rv = HTTPD_SIMPLE_POST_HANDLER_OK;
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}
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new_net_config();
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return rv;
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}
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/*---------------------------------------------------------------------------*/
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static int
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cmd_type_post_handler(char *key, int key_len, char *val, int val_len)
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{
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int rv = HTTPD_SIMPLE_POST_HANDLER_UNKNOWN;
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if(key_len != strlen("cmd_type") ||
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strncasecmp(key, "cmd_type", strlen("cmd_type")) != 0) {
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/* Not ours */
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return HTTPD_SIMPLE_POST_HANDLER_UNKNOWN;
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}
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if(val_len > MQTT_CLIENT_CONFIG_CMD_TYPE_LEN) {
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/* Ours but bad value */
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rv = HTTPD_SIMPLE_POST_HANDLER_ERROR;
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} else {
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memset(conf->cmd_type, 0, MQTT_CLIENT_CONFIG_CMD_TYPE_LEN);
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memcpy(conf->cmd_type, val, val_len);
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rv = HTTPD_SIMPLE_POST_HANDLER_OK;
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}
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new_net_config();
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return rv;
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}
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/*---------------------------------------------------------------------------*/
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static int
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auth_token_post_handler(char *key, int key_len, char *val, int val_len)
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{
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int rv = HTTPD_SIMPLE_POST_HANDLER_UNKNOWN;
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if(key_len != strlen("auth_token") ||
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strncasecmp(key, "auth_token", strlen("auth_token")) != 0) {
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/* Not ours */
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return HTTPD_SIMPLE_POST_HANDLER_UNKNOWN;
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}
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if(val_len > MQTT_CLIENT_CONFIG_AUTH_TOKEN_LEN) {
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/* Ours but bad value */
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rv = HTTPD_SIMPLE_POST_HANDLER_ERROR;
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} else {
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memset(conf->auth_token, 0, MQTT_CLIENT_CONFIG_AUTH_TOKEN_LEN);
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memcpy(conf->auth_token, val, val_len);
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rv = HTTPD_SIMPLE_POST_HANDLER_OK;
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}
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new_net_config();
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return rv;
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}
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/*---------------------------------------------------------------------------*/
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static int
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interval_post_handler(char *key, int key_len, char *val, int val_len)
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{
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int rv = 0;
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if(key_len != strlen("interval") ||
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strncasecmp(key, "interval", strlen("interval")) != 0) {
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/* Not ours */
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return HTTPD_SIMPLE_POST_HANDLER_UNKNOWN;
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}
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rv = atoi(val);
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if(rv < MQTT_CLIENT_PUBLISH_INTERVAL_MIN ||
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rv > MQTT_CLIENT_PUBLISH_INTERVAL_MAX) {
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return HTTPD_SIMPLE_POST_HANDLER_ERROR;
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}
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conf->pub_interval = rv * CLOCK_SECOND;
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return HTTPD_SIMPLE_POST_HANDLER_OK;
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}
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/*---------------------------------------------------------------------------*/
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static int
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port_post_handler(char *key, int key_len, char *val, int val_len)
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{
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int rv = 0;
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if(key_len != strlen("broker_port") ||
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strncasecmp(key, "broker_port", strlen("broker_port")) != 0) {
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/* Not ours */
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return HTTPD_SIMPLE_POST_HANDLER_UNKNOWN;
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}
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rv = atoi(val);
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if(rv <= 65535 && rv > 0) {
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conf->broker_port = rv;
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} else {
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return HTTPD_SIMPLE_POST_HANDLER_ERROR;
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}
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new_net_config();
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return HTTPD_SIMPLE_POST_HANDLER_OK;
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}
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/*---------------------------------------------------------------------------*/
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static int
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ip_addr_post_handler(char *key, int key_len, char *val, int val_len)
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{
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int rv = HTTPD_SIMPLE_POST_HANDLER_UNKNOWN;
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if(key_len != strlen("broker_ip") ||
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strncasecmp(key, "broker_ip", strlen("broker_ip")) != 0) {
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/* Not ours */
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return HTTPD_SIMPLE_POST_HANDLER_UNKNOWN;
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}
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if(val_len > MQTT_CLIENT_CONFIG_IP_ADDR_STR_LEN) {
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/* Ours but bad value */
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rv = HTTPD_SIMPLE_POST_HANDLER_ERROR;
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} else {
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memset(conf->broker_ip, 0, MQTT_CLIENT_CONFIG_IP_ADDR_STR_LEN);
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memcpy(conf->broker_ip, val, val_len);
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rv = HTTPD_SIMPLE_POST_HANDLER_OK;
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}
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new_net_config();
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return rv;
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}
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/*---------------------------------------------------------------------------*/
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static int
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reconnect_post_handler(char *key, int key_len, char *val, int val_len)
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{
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if(key_len != strlen("reconnect") ||
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strncasecmp(key, "reconnect", strlen("reconnect")) != 0) {
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/* Not ours */
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return HTTPD_SIMPLE_POST_HANDLER_UNKNOWN;
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}
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new_net_config();
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return HTTPD_SIMPLE_POST_HANDLER_OK;
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}
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/*---------------------------------------------------------------------------*/
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static int
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ping_interval_post_handler(char *key, int key_len, char *val, int val_len)
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{
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int rv = 0;
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if(key_len != strlen("ping_interval") ||
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strncasecmp(key, "ping_interval", strlen("ping_interval")) != 0) {
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/* Not ours */
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return HTTPD_SIMPLE_POST_HANDLER_UNKNOWN;
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}
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rv = atoi(val);
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if(rv < MQTT_CLIENT_RSSI_MEASURE_INTERVAL_MIN ||
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rv > MQTT_CLIENT_RSSI_MEASURE_INTERVAL_MAX) {
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return HTTPD_SIMPLE_POST_HANDLER_ERROR;
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}
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conf->def_rt_ping_interval = rv * CLOCK_SECOND;
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return HTTPD_SIMPLE_POST_HANDLER_OK;
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}
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/*---------------------------------------------------------------------------*/
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HTTPD_SIMPLE_POST_HANDLER(org_id, org_id_post_handler);
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HTTPD_SIMPLE_POST_HANDLER(type_id, type_id_post_handler);
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HTTPD_SIMPLE_POST_HANDLER(event_type_id, event_type_id_post_handler);
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HTTPD_SIMPLE_POST_HANDLER(cmd_type, cmd_type_post_handler);
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HTTPD_SIMPLE_POST_HANDLER(auth_token, auth_token_post_handler);
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HTTPD_SIMPLE_POST_HANDLER(ip_addr, ip_addr_post_handler);
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HTTPD_SIMPLE_POST_HANDLER(port, port_post_handler);
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HTTPD_SIMPLE_POST_HANDLER(interval, interval_post_handler);
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HTTPD_SIMPLE_POST_HANDLER(reconnect, reconnect_post_handler);
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HTTPD_SIMPLE_POST_HANDLER(ping_interval, ping_interval_post_handler);
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/*---------------------------------------------------------------------------*/
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static void
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echo_reply_handler(uip_ipaddr_t *source, uint8_t ttl, uint8_t *data,
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uint16_t datalen)
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{
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if(uip_ip6addr_cmp(source, uip_ds6_defrt_choose())) {
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def_rt_rssi = sicslowpan_get_last_rssi();
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}
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}
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/*---------------------------------------------------------------------------*/
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static void
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pub_handler(const char *topic, uint16_t topic_len, const uint8_t *chunk,
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uint16_t chunk_len)
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{
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DBG("Pub Handler: topic='%s' (len=%u), chunk_len=%u\n", topic, topic_len,
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chunk_len);
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/* If we don't like the length, ignore */
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if(topic_len != 23 || chunk_len != 1) {
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printf("Incorrect topic or chunk len. Ignored\n");
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return;
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}
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/* If the format != json, ignore */
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if(strncmp(&topic[topic_len - 4], "json", 4) != 0) {
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printf("Incorrect format\n");
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}
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if(strncmp(&topic[10], "leds", 4) == 0) {
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if(chunk[0] == '1') {
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leds_on(LEDS_RED);
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} else if(chunk[0] == '0') {
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leds_off(LEDS_RED);
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}
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return;
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}
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|
|
#if BOARD_SENSORTAG
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if(strncmp(&topic[10], "buzz", 4) == 0) {
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if(chunk[0] == '1') {
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buzzer_start(1000);
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} else if(chunk[0] == '0') {
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buzzer_stop();
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}
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return;
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}
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#endif
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}
|
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/*---------------------------------------------------------------------------*/
|
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static void
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mqtt_event(struct mqtt_connection *m, mqtt_event_t event, void *data)
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{
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switch(event) {
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case MQTT_EVENT_CONNECTED: {
|
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DBG("APP - Application has a MQTT connection\n");
|
|
timer_set(&connection_life, CONNECTION_STABLE_TIME);
|
|
state = MQTT_CLIENT_STATE_CONNECTED;
|
|
break;
|
|
}
|
|
case MQTT_EVENT_DISCONNECTED: {
|
|
DBG("APP - MQTT Disconnect. Reason %u\n", *((mqtt_event_t *)data));
|
|
|
|
/* Do nothing if the disconnect was the result of an incoming config */
|
|
if(state != MQTT_CLIENT_STATE_NEWCONFIG) {
|
|
state = MQTT_CLIENT_STATE_DISCONNECTED;
|
|
process_poll(&mqtt_client_process);
|
|
}
|
|
break;
|
|
}
|
|
case MQTT_EVENT_PUBLISH: {
|
|
msg_ptr = data;
|
|
|
|
/* Implement first_flag in publish message? */
|
|
if(msg_ptr->first_chunk) {
|
|
msg_ptr->first_chunk = 0;
|
|
DBG("APP - Application received a publish on topic '%s'. Payload "
|
|
"size is %i bytes. Content:\n\n",
|
|
msg_ptr->topic, msg_ptr->payload_length);
|
|
}
|
|
|
|
pub_handler(msg_ptr->topic, strlen(msg_ptr->topic), msg_ptr->payload_chunk,
|
|
msg_ptr->payload_length);
|
|
break;
|
|
}
|
|
case MQTT_EVENT_SUBACK: {
|
|
DBG("APP - Application is subscribed to topic successfully\n");
|
|
break;
|
|
}
|
|
case MQTT_EVENT_UNSUBACK: {
|
|
DBG("APP - Application is unsubscribed to topic successfully\n");
|
|
break;
|
|
}
|
|
case MQTT_EVENT_PUBACK: {
|
|
DBG("APP - Publishing complete.\n");
|
|
break;
|
|
}
|
|
default:
|
|
DBG("APP - Application got a unhandled MQTT event: %i\n", event);
|
|
break;
|
|
}
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
static int
|
|
construct_pub_topic(void)
|
|
{
|
|
int len = snprintf(pub_topic, BUFFER_SIZE, "iot-2/evt/%s/fmt/json",
|
|
conf->event_type_id);
|
|
|
|
/* len < 0: Error. Len >= BUFFER_SIZE: Buffer too small */
|
|
if(len < 0 || len >= BUFFER_SIZE) {
|
|
printf("Pub Topic: %d, Buffer %d\n", len, BUFFER_SIZE);
|
|
return 0;
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
static int
|
|
construct_sub_topic(void)
|
|
{
|
|
int len = snprintf(sub_topic, BUFFER_SIZE, "iot-2/cmd/%s/fmt/json",
|
|
conf->cmd_type);
|
|
|
|
/* len < 0: Error. Len >= BUFFER_SIZE: Buffer too small */
|
|
if(len < 0 || len >= BUFFER_SIZE) {
|
|
printf("Sub Topic: %d, Buffer %d\n", len, BUFFER_SIZE);
|
|
return 0;
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
static int
|
|
construct_client_id(void)
|
|
{
|
|
int len = snprintf(client_id, BUFFER_SIZE, "d:%s:%s:%02x%02x%02x%02x%02x%02x",
|
|
conf->org_id, conf->type_id,
|
|
linkaddr_node_addr.u8[0], linkaddr_node_addr.u8[1],
|
|
linkaddr_node_addr.u8[2], linkaddr_node_addr.u8[5],
|
|
linkaddr_node_addr.u8[6], linkaddr_node_addr.u8[7]);
|
|
|
|
/* len < 0: Error. Len >= BUFFER_SIZE: Buffer too small */
|
|
if(len < 0 || len >= BUFFER_SIZE) {
|
|
printf("Client ID: %d, Buffer %d\n", len, BUFFER_SIZE);
|
|
return 0;
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
static void
|
|
update_config(void)
|
|
{
|
|
if(construct_client_id() == 0) {
|
|
/* Fatal error. Client ID larger than the buffer */
|
|
state = MQTT_CLIENT_STATE_CONFIG_ERROR;
|
|
return;
|
|
}
|
|
|
|
if(construct_sub_topic() == 0) {
|
|
/* Fatal error. Topic larger than the buffer */
|
|
state = MQTT_CLIENT_STATE_CONFIG_ERROR;
|
|
return;
|
|
}
|
|
|
|
if(construct_pub_topic() == 0) {
|
|
/* Fatal error. Topic larger than the buffer */
|
|
state = MQTT_CLIENT_STATE_CONFIG_ERROR;
|
|
return;
|
|
}
|
|
|
|
/* Reset the counter */
|
|
seq_nr_value = 0;
|
|
|
|
state = MQTT_CLIENT_STATE_INIT;
|
|
|
|
/*
|
|
* Schedule next timer event ASAP
|
|
*
|
|
* If we entered an error state then we won't do anything when it fires.
|
|
*
|
|
* Since the error at this stage is a config error, we will only exit this
|
|
* error state if we get a new config.
|
|
*/
|
|
etimer_set(&publish_periodic_timer, 0);
|
|
|
|
return;
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
static int
|
|
init_config()
|
|
{
|
|
/* Populate configuration with default values */
|
|
memset(conf, 0, sizeof(mqtt_client_config_t));
|
|
|
|
memcpy(conf->org_id, CC26XX_WEB_DEMO_DEFAULT_ORG_ID, 11);
|
|
memcpy(conf->type_id, CC26XX_WEB_DEMO_DEFAULT_TYPE_ID, 7);
|
|
memcpy(conf->event_type_id, CC26XX_WEB_DEMO_DEFAULT_EVENT_TYPE_ID, 7);
|
|
memcpy(conf->broker_ip, broker_ip, strlen(broker_ip));
|
|
memcpy(conf->cmd_type, CC26XX_WEB_DEMO_DEFAULT_SUBSCRIBE_CMD_TYPE, 1);
|
|
|
|
conf->broker_port = CC26XX_WEB_DEMO_DEFAULT_BROKER_PORT;
|
|
conf->pub_interval = CC26XX_WEB_DEMO_DEFAULT_PUBLISH_INTERVAL;
|
|
conf->def_rt_ping_interval = CC26XX_WEB_DEMO_DEFAULT_RSSI_MEAS_INTERVAL;
|
|
|
|
return 1;
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
static void
|
|
register_http_post_handlers(void)
|
|
{
|
|
httpd_simple_register_post_handler(&org_id_handler);
|
|
httpd_simple_register_post_handler(&type_id_handler);
|
|
httpd_simple_register_post_handler(&event_type_id_handler);
|
|
httpd_simple_register_post_handler(&cmd_type_handler);
|
|
httpd_simple_register_post_handler(&auth_token_handler);
|
|
httpd_simple_register_post_handler(&interval_handler);
|
|
httpd_simple_register_post_handler(&port_handler);
|
|
httpd_simple_register_post_handler(&ip_addr_handler);
|
|
httpd_simple_register_post_handler(&reconnect_handler);
|
|
httpd_simple_register_post_handler(&ping_interval_handler);
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
static void
|
|
subscribe(void)
|
|
{
|
|
/* Publish MQTT topic in IBM quickstart format */
|
|
mqtt_status_t status;
|
|
|
|
status = mqtt_subscribe(&conn, NULL, sub_topic, MQTT_QOS_LEVEL_0);
|
|
|
|
DBG("APP - Subscribing!\n");
|
|
if(status == MQTT_STATUS_OUT_QUEUE_FULL) {
|
|
DBG("APP - Tried to subscribe but command queue was full!\n");
|
|
}
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
static void
|
|
publish(void)
|
|
{
|
|
/* Publish MQTT topic in IBM quickstart format */
|
|
int len;
|
|
int remaining = APP_BUFFER_SIZE;
|
|
|
|
seq_nr_value++;
|
|
|
|
buf_ptr = app_buffer;
|
|
|
|
len = snprintf(buf_ptr, remaining,
|
|
"{"
|
|
"\"d\":{"
|
|
"\"myName\":\"%s\","
|
|
"\"Seq #\":%d,"
|
|
"\"Uptime (sec)\":%lu",
|
|
BOARD_STRING, seq_nr_value, clock_seconds());
|
|
|
|
if(len < 0 || len >= remaining) {
|
|
printf("Buffer too short. Have %d, need %d + \\0\n", remaining, len);
|
|
return;
|
|
}
|
|
|
|
remaining -= len;
|
|
buf_ptr += len;
|
|
|
|
/* Put our Default route's string representation in a buffer */
|
|
char def_rt_str[64];
|
|
memset(def_rt_str, 0, sizeof(def_rt_str));
|
|
cc26xx_web_demo_ipaddr_sprintf(def_rt_str, sizeof(def_rt_str),
|
|
uip_ds6_defrt_choose());
|
|
|
|
len = snprintf(buf_ptr, remaining, ",\"Def Route\":\"%s\",\"RSSI (dBm)\":%d",
|
|
def_rt_str, def_rt_rssi);
|
|
|
|
if(len < 0 || len >= remaining) {
|
|
printf("Buffer too short. Have %d, need %d + \\0\n", remaining, len);
|
|
return;
|
|
}
|
|
remaining -= len;
|
|
buf_ptr += len;
|
|
|
|
memcpy(&def_route, uip_ds6_defrt_choose(), sizeof(uip_ip6addr_t));
|
|
|
|
for(reading = cc26xx_web_demo_sensor_first();
|
|
reading != NULL; reading = reading->next) {
|
|
if(reading->publish && reading->raw != CC26XX_SENSOR_READING_ERROR) {
|
|
len = snprintf(buf_ptr, remaining,
|
|
",\"%s (%s)\":%s", reading->descr, reading->units,
|
|
reading->converted);
|
|
|
|
if(len < 0 || len >= remaining) {
|
|
printf("Buffer too short. Have %d, need %d + \\0\n", remaining, len);
|
|
return;
|
|
}
|
|
remaining -= len;
|
|
buf_ptr += len;
|
|
}
|
|
}
|
|
|
|
len = snprintf(buf_ptr, remaining, "}}");
|
|
|
|
if(len < 0 || len >= remaining) {
|
|
printf("Buffer too short. Have %d, need %d + \\0\n", remaining, len);
|
|
return;
|
|
}
|
|
|
|
mqtt_publish(&conn, NULL, pub_topic, (uint8_t *)app_buffer,
|
|
strlen(app_buffer), MQTT_QOS_LEVEL_0, MQTT_RETAIN_OFF);
|
|
|
|
DBG("APP - Publish!\n");
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
static void
|
|
connect_to_broker(void)
|
|
{
|
|
/* Connect to MQTT server */
|
|
mqtt_connect(&conn, conf->broker_ip, conf->broker_port,
|
|
conf->pub_interval * 3);
|
|
|
|
state = MQTT_CLIENT_STATE_CONNECTING;
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
static void
|
|
ping_parent(void)
|
|
{
|
|
if(uip_ds6_get_global(ADDR_PREFERRED) == NULL) {
|
|
return;
|
|
}
|
|
|
|
uip_icmp6_send(uip_ds6_defrt_choose(), ICMP6_ECHO_REQUEST, 0,
|
|
CC26XX_WEB_DEMO_ECHO_REQ_PAYLOAD_LEN);
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
static void
|
|
state_machine(void)
|
|
{
|
|
switch(state) {
|
|
case MQTT_CLIENT_STATE_INIT:
|
|
/* If we have just been configured register MQTT connection */
|
|
mqtt_register(&conn, &mqtt_client_process, client_id, mqtt_event,
|
|
MQTT_CLIENT_MAX_SEGMENT_SIZE);
|
|
|
|
/*
|
|
* If we are not using the quickstart service (thus we are an IBM
|
|
* registered device), we need to provide user name and password
|
|
*/
|
|
if(strncasecmp(conf->org_id, QUICKSTART, strlen(conf->org_id)) != 0) {
|
|
if(strlen(conf->auth_token) == 0) {
|
|
printf("User name set, but empty auth token\n");
|
|
state = MQTT_CLIENT_STATE_ERROR;
|
|
break;
|
|
} else {
|
|
mqtt_set_username_password(&conn, "use-token-auth",
|
|
conf->auth_token);
|
|
}
|
|
}
|
|
|
|
/* _register() will set auto_reconnect. We don't want that. */
|
|
conn.auto_reconnect = 0;
|
|
connect_attempt = 1;
|
|
|
|
/*
|
|
* Wipe out the default route so we'll republish it every time we switch to
|
|
* a new broker
|
|
*/
|
|
memset(&def_route, 0, sizeof(def_route));
|
|
|
|
state = MQTT_CLIENT_STATE_REGISTERED;
|
|
DBG("Init\n");
|
|
/* Continue */
|
|
case MQTT_CLIENT_STATE_REGISTERED:
|
|
if(uip_ds6_get_global(ADDR_PREFERRED) != NULL) {
|
|
/* Registered and with a public IP. Connect */
|
|
DBG("Registered. Connect attempt %u\n", connect_attempt);
|
|
ping_parent();
|
|
connect_to_broker();
|
|
}
|
|
etimer_set(&publish_periodic_timer, CC26XX_WEB_DEMO_NET_CONNECT_PERIODIC);
|
|
return;
|
|
break;
|
|
case MQTT_CLIENT_STATE_CONNECTING:
|
|
leds_on(CC26XX_WEB_DEMO_STATUS_LED);
|
|
ctimer_set(&ct, CONNECTING_LED_DURATION, publish_led_off, NULL);
|
|
/* Not connected yet. Wait */
|
|
DBG("Connecting (%u)\n", connect_attempt);
|
|
break;
|
|
case MQTT_CLIENT_STATE_CONNECTED:
|
|
/* Don't subscribe unless we are a registered device */
|
|
if(strncasecmp(conf->org_id, QUICKSTART, strlen(conf->org_id)) == 0) {
|
|
DBG("Using 'quickstart': Skipping subscribe\n");
|
|
state = MQTT_CLIENT_STATE_PUBLISHING;
|
|
}
|
|
/* Continue */
|
|
case MQTT_CLIENT_STATE_PUBLISHING:
|
|
/* If the timer expired, the connection is stable. */
|
|
if(timer_expired(&connection_life)) {
|
|
/*
|
|
* Intentionally using 0 here instead of 1: We want RECONNECT_ATTEMPTS
|
|
* attempts if we disconnect after a successful connect
|
|
*/
|
|
connect_attempt = 0;
|
|
}
|
|
|
|
if(mqtt_ready(&conn) && conn.out_buffer_sent) {
|
|
/* Connected. Publish */
|
|
if(state == MQTT_CLIENT_STATE_CONNECTED) {
|
|
subscribe();
|
|
state = MQTT_CLIENT_STATE_PUBLISHING;
|
|
} else {
|
|
leds_on(CC26XX_WEB_DEMO_STATUS_LED);
|
|
ctimer_set(&ct, PUBLISH_LED_ON_DURATION, publish_led_off, NULL);
|
|
publish();
|
|
}
|
|
etimer_set(&publish_periodic_timer, conf->pub_interval);
|
|
|
|
DBG("Publishing\n");
|
|
/* Return here so we don't end up rescheduling the timer */
|
|
return;
|
|
} else {
|
|
/*
|
|
* Our publish timer fired, but some MQTT packet is already in flight
|
|
* (either not sent at all, or sent but not fully ACKd).
|
|
*
|
|
* This can mean that we have lost connectivity to our broker or that
|
|
* simply there is some network delay. In both cases, we refuse to
|
|
* trigger a new message and we wait for TCP to either ACK the entire
|
|
* packet after retries, or to timeout and notify us.
|
|
*/
|
|
DBG("Publishing... (MQTT state=%d, q=%u)\n", conn.state,
|
|
conn.out_queue_full);
|
|
}
|
|
break;
|
|
case MQTT_CLIENT_STATE_DISCONNECTED:
|
|
DBG("Disconnected\n");
|
|
if(connect_attempt < RECONNECT_ATTEMPTS ||
|
|
RECONNECT_ATTEMPTS == RETRY_FOREVER) {
|
|
/* Disconnect and backoff */
|
|
clock_time_t interval;
|
|
mqtt_disconnect(&conn);
|
|
connect_attempt++;
|
|
|
|
interval = connect_attempt < 3 ? RECONNECT_INTERVAL << connect_attempt :
|
|
RECONNECT_INTERVAL << 3;
|
|
|
|
DBG("Disconnected. Attempt %u in %lu ticks\n", connect_attempt, interval);
|
|
|
|
etimer_set(&publish_periodic_timer, interval);
|
|
|
|
state = MQTT_CLIENT_STATE_REGISTERED;
|
|
return;
|
|
} else {
|
|
/* Max reconnect attempts reached. Enter error state */
|
|
state = MQTT_CLIENT_STATE_ERROR;
|
|
DBG("Aborting connection after %u attempts\n", connect_attempt - 1);
|
|
}
|
|
break;
|
|
case MQTT_CLIENT_STATE_NEWCONFIG:
|
|
/* Only update config after we have disconnected */
|
|
if(conn.state == MQTT_CONN_STATE_NOT_CONNECTED) {
|
|
update_config();
|
|
DBG("New config\n");
|
|
|
|
/* update_config() scheduled next pass. Return */
|
|
return;
|
|
}
|
|
break;
|
|
case MQTT_CLIENT_STATE_CONFIG_ERROR:
|
|
/* Idle away. The only way out is a new config */
|
|
printf("Bad configuration.\n");
|
|
return;
|
|
case MQTT_CLIENT_STATE_ERROR:
|
|
default:
|
|
leds_on(CC26XX_WEB_DEMO_STATUS_LED);
|
|
/*
|
|
* 'default' should never happen.
|
|
*
|
|
* If we enter here it's because of some error. Stop timers. The only thing
|
|
* that can bring us out is a new config event
|
|
*/
|
|
printf("Default case: State=0x%02x\n", state);
|
|
return;
|
|
}
|
|
|
|
/* If we didn't return so far, reschedule ourselves */
|
|
etimer_set(&publish_periodic_timer, STATE_MACHINE_PERIODIC);
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
PROCESS_THREAD(mqtt_client_process, ev, data)
|
|
{
|
|
|
|
PROCESS_BEGIN();
|
|
|
|
printf("CC26XX MQTT Client Process\n");
|
|
|
|
conf = &cc26xx_web_demo_config.mqtt_config;
|
|
if(init_config() != 1) {
|
|
PROCESS_EXIT();
|
|
}
|
|
|
|
register_http_post_handlers();
|
|
|
|
update_config();
|
|
|
|
def_rt_rssi = 0x8000000;
|
|
uip_icmp6_echo_reply_callback_add(&echo_reply_notification,
|
|
echo_reply_handler);
|
|
etimer_set(&echo_request_timer, conf->def_rt_ping_interval);
|
|
|
|
/* Main loop */
|
|
while(1) {
|
|
|
|
PROCESS_YIELD();
|
|
|
|
if(ev == sensors_event && data == CC26XX_WEB_DEMO_MQTT_PUBLISH_TRIGGER) {
|
|
if(state == MQTT_CLIENT_STATE_ERROR) {
|
|
connect_attempt = 1;
|
|
state = MQTT_CLIENT_STATE_REGISTERED;
|
|
}
|
|
}
|
|
|
|
if(ev == httpd_simple_event_new_config) {
|
|
/*
|
|
* Schedule next pass in a while. When HTTPD sends us this event, it is
|
|
* also in the process of sending the config page. Wait a little before
|
|
* reconnecting, so as to not cause congestion.
|
|
*/
|
|
etimer_set(&publish_periodic_timer, NEW_CONFIG_WAIT_INTERVAL);
|
|
}
|
|
|
|
if((ev == PROCESS_EVENT_TIMER && data == &publish_periodic_timer) ||
|
|
ev == PROCESS_EVENT_POLL ||
|
|
ev == cc26xx_web_demo_publish_event ||
|
|
(ev == sensors_event && data == CC26XX_WEB_DEMO_MQTT_PUBLISH_TRIGGER)) {
|
|
state_machine();
|
|
}
|
|
|
|
if(ev == PROCESS_EVENT_TIMER && data == &echo_request_timer) {
|
|
ping_parent();
|
|
etimer_set(&echo_request_timer, conf->def_rt_ping_interval);
|
|
}
|
|
|
|
if(ev == cc26xx_web_demo_load_config_defaults) {
|
|
init_config();
|
|
etimer_set(&publish_periodic_timer, NEW_CONFIG_WAIT_INTERVAL);
|
|
}
|
|
}
|
|
|
|
PROCESS_END();
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
/**
|
|
* @}
|
|
*/
|