Pietro Spadaccino / Mbed OS ForestSafe

Forest fire prediction using sensors and LoRa communications

Dependencies:   X_NUCLEO_IKS01A2

main.cpp@50:6e615eea1e6f, 2019-03-13 (annotated)

Committer:
marcozecchini
Date:
Wed Mar 13 17:30:20 2019 +0000
Revision:
50:6e615eea1e6f
Parent:
47:b6d132f1079f
Child:
51:925c07d0d7cf
example final version

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 0:7037ed05f54f 1 /**
mbed_official 0:7037ed05f54f 2 * Copyright (c) 2017, Arm Limited and affiliates.
mbed_official 0:7037ed05f54f 3 * SPDX-License-Identifier: Apache-2.0
mbed_official 0:7037ed05f54f 4 *
mbed_official 0:7037ed05f54f 5 * Licensed under the Apache License, Version 2.0 (the "License");
mbed_official 0:7037ed05f54f 6 * you may not use this file except in compliance with the License.
mbed_official 0:7037ed05f54f 7 * You may obtain a copy of the License at
mbed_official 0:7037ed05f54f 8 *
mbed_official 0:7037ed05f54f 9 * http://www.apache.org/licenses/LICENSE-2.0
mbed_official 0:7037ed05f54f 10 *
mbed_official 0:7037ed05f54f 11 * Unless required by applicable law or agreed to in writing, software
mbed_official 0:7037ed05f54f 12 * distributed under the License is distributed on an "AS IS" BASIS,
mbed_official 0:7037ed05f54f 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
mbed_official 0:7037ed05f54f 14 * See the License for the specific language governing permissions and
mbed_official 0:7037ed05f54f 15 * limitations under the License.
mbed_official 0:7037ed05f54f 16 */
mbed_official 0:7037ed05f54f 17 #include <stdio.h>
mbed_official 3:8c7198d1a2a1 18
mbed_official 0:7037ed05f54f 19 #include "lorawan/LoRaWANInterface.h"
mbed_official 0:7037ed05f54f 20 #include "lorawan/system/lorawan_data_structures.h"
mbed_official 0:7037ed05f54f 21 #include "events/EventQueue.h"
mbed_official 0:7037ed05f54f 22
mbed_official 0:7037ed05f54f 23 // Application helpers
mbed_official 0:7037ed05f54f 24 #include "trace_helper.h"
mbed_official 0:7037ed05f54f 25 #include "lora_radio_helper.h"
mbed_official 0:7037ed05f54f 26
mbed_official 0:7037ed05f54f 27 using namespace events;
mbed_official 0:7037ed05f54f 28
mbed_official 12:5015dfead3f2 29 // Max payload size can be LORAMAC_PHY_MAXPAYLOAD.
mbed_official 12:5015dfead3f2 30 // This example only communicates with much shorter messages (<30 bytes).
mbed_official 12:5015dfead3f2 31 // If longer messages are used, these buffers must be changed accordingly.
mbed_official 12:5015dfead3f2 32 uint8_t tx_buffer[30];
mbed_official 12:5015dfead3f2 33 uint8_t rx_buffer[30];
mbed_official 0:7037ed05f54f 34
mbed_official 0:7037ed05f54f 35 /*
mbed_official 0:7037ed05f54f 36 * Sets up an application dependent transmission timer in ms. Used only when Duty Cycling is off for testing
mbed_official 0:7037ed05f54f 37 */
mbed_official 0:7037ed05f54f 38 #define TX_TIMER 10000
mbed_official 0:7037ed05f54f 39
mbed_official 0:7037ed05f54f 40 /**
mbed_official 0:7037ed05f54f 41 * Maximum number of events for the event queue.
mbed_official 12:5015dfead3f2 42 * 10 is the safe number for the stack events, however, if application
mbed_official 0:7037ed05f54f 43 * also uses the queue for whatever purposes, this number should be increased.
mbed_official 0:7037ed05f54f 44 */
mbed_official 12:5015dfead3f2 45 #define MAX_NUMBER_OF_EVENTS 10
mbed_official 0:7037ed05f54f 46
mbed_official 0:7037ed05f54f 47 /**
mbed_official 0:7037ed05f54f 48 * Maximum number of retries for CONFIRMED messages before giving up
mbed_official 0:7037ed05f54f 49 */
mbed_official 0:7037ed05f54f 50 #define CONFIRMED_MSG_RETRY_COUNTER 3
mbed_official 0:7037ed05f54f 51
mbed_official 0:7037ed05f54f 52
mbed_official 0:7037ed05f54f 53 /**
mbed_official 0:7037ed05f54f 54 * This event queue is the global event queue for both the
mbed_official 0:7037ed05f54f 55 * application and stack. To conserve memory, the stack is designed to run
mbed_official 0:7037ed05f54f 56 * in the same thread as the application and the application is responsible for
mbed_official 0:7037ed05f54f 57 * providing an event queue to the stack that will be used for ISR deferment as
mbed_official 0:7037ed05f54f 58 * well as application information event queuing.
mbed_official 0:7037ed05f54f 59 */
mbed_official 46:a124538e2891 60 static EventQueue ev_queue(MAX_NUMBER_OF_EVENTS *EVENTS_EVENT_SIZE);
mbed_official 0:7037ed05f54f 61
mbed_official 0:7037ed05f54f 62 /**
mbed_official 0:7037ed05f54f 63 * Event handler.
mbed_official 0:7037ed05f54f 64 *
mbed_official 0:7037ed05f54f 65 * This will be passed to the LoRaWAN stack to queue events for the
mbed_official 0:7037ed05f54f 66 * application which in turn drive the application.
mbed_official 0:7037ed05f54f 67 */
mbed_official 0:7037ed05f54f 68 static void lora_event_handler(lorawan_event_t event);
mbed_official 0:7037ed05f54f 69
mbed_official 0:7037ed05f54f 70 /**
mbed_official 46:a124538e2891 71 * Constructing Mbed LoRaWANInterface and passing it the radio object from lora_radio_helper.
mbed_official 0:7037ed05f54f 72 */
mbed_official 2:dc95ac6d6d4e 73 static LoRaWANInterface lorawan(radio);
mbed_official 0:7037ed05f54f 74
mbed_official 0:7037ed05f54f 75 /**
mbed_official 0:7037ed05f54f 76 * Application specific callbacks
mbed_official 0:7037ed05f54f 77 */
mbed_official 0:7037ed05f54f 78 static lorawan_app_callbacks_t callbacks;
mbed_official 0:7037ed05f54f 79
mbed_official 0:7037ed05f54f 80 /**
mbed_official 0:7037ed05f54f 81 * Entry point for application
mbed_official 0:7037ed05f54f 82 */
mbed_official 46:a124538e2891 83 int main(void)
mbed_official 0:7037ed05f54f 84 {
mbed_official 0:7037ed05f54f 85 // setup tracing
mbed_official 0:7037ed05f54f 86 setup_trace();
mbed_official 0:7037ed05f54f 87
mbed_official 0:7037ed05f54f 88 // stores the status of a call to LoRaWAN protocol
mbed_official 0:7037ed05f54f 89 lorawan_status_t retcode;
mbed_official 0:7037ed05f54f 90
mbed_official 0:7037ed05f54f 91 // Initialize LoRaWAN stack
mbed_official 2:dc95ac6d6d4e 92 if (lorawan.initialize(&ev_queue) != LORAWAN_STATUS_OK) {
mbed_official 0:7037ed05f54f 93 printf("\r\n LoRa initialization failed! \r\n");
mbed_official 0:7037ed05f54f 94 return -1;
mbed_official 0:7037ed05f54f 95 }
mbed_official 0:7037ed05f54f 96
mbed_official 0:7037ed05f54f 97 printf("\r\n Mbed LoRaWANStack initialized \r\n");
mbed_official 0:7037ed05f54f 98
mbed_official 0:7037ed05f54f 99 // prepare application callbacks
mbed_official 0:7037ed05f54f 100 callbacks.events = mbed::callback(lora_event_handler);
mbed_official 2:dc95ac6d6d4e 101 lorawan.add_app_callbacks(&callbacks);
mbed_official 0:7037ed05f54f 102
mbed_official 0:7037ed05f54f 103 // Set number of retries in case of CONFIRMED messages
mbed_official 2:dc95ac6d6d4e 104 if (lorawan.set_confirmed_msg_retries(CONFIRMED_MSG_RETRY_COUNTER)
mbed_official 46:a124538e2891 105 != LORAWAN_STATUS_OK) {
mbed_official 0:7037ed05f54f 106 printf("\r\n set_confirmed_msg_retries failed! \r\n\r\n");
mbed_official 0:7037ed05f54f 107 return -1;
mbed_official 0:7037ed05f54f 108 }
mbed_official 0:7037ed05f54f 109
mbed_official 0:7037ed05f54f 110 printf("\r\n CONFIRMED message retries : %d \r\n",
mbed_official 0:7037ed05f54f 111 CONFIRMED_MSG_RETRY_COUNTER);
mbed_official 0:7037ed05f54f 112
mbed_official 0:7037ed05f54f 113 // Enable adaptive data rate
mbed_official 2:dc95ac6d6d4e 114 if (lorawan.enable_adaptive_datarate() != LORAWAN_STATUS_OK) {
mbed_official 0:7037ed05f54f 115 printf("\r\n enable_adaptive_datarate failed! \r\n");
mbed_official 0:7037ed05f54f 116 return -1;
mbed_official 0:7037ed05f54f 117 }
mbed_official 0:7037ed05f54f 118
mbed_official 0:7037ed05f54f 119 printf("\r\n Adaptive data rate (ADR) - Enabled \r\n");
mbed_official 0:7037ed05f54f 120
mbed_official 2:dc95ac6d6d4e 121 retcode = lorawan.connect();
mbed_official 0:7037ed05f54f 122
mbed_official 0:7037ed05f54f 123 if (retcode == LORAWAN_STATUS_OK ||
mbed_official 46:a124538e2891 124 retcode == LORAWAN_STATUS_CONNECT_IN_PROGRESS) {
mbed_official 0:7037ed05f54f 125 } else {
mbed_official 0:7037ed05f54f 126 printf("\r\n Connection error, code = %d \r\n", retcode);
mbed_official 0:7037ed05f54f 127 return -1;
mbed_official 0:7037ed05f54f 128 }
mbed_official 0:7037ed05f54f 129
mbed_official 0:7037ed05f54f 130 printf("\r\n Connection - In Progress ...\r\n");
mbed_official 0:7037ed05f54f 131
mbed_official 0:7037ed05f54f 132 // make your event queue dispatching events forever
mbed_official 0:7037ed05f54f 133 ev_queue.dispatch_forever();
mbed_official 3:8c7198d1a2a1 134
mbed_official 3:8c7198d1a2a1 135 return 0;
mbed_official 0:7037ed05f54f 136 }
mbed_official 0:7037ed05f54f 137
mbed_official 0:7037ed05f54f 138 /**
mbed_official 0:7037ed05f54f 139 * Sends a message to the Network Server
mbed_official 0:7037ed05f54f 140 */
mbed_official 0:7037ed05f54f 141 static void send_message()
mbed_official 0:7037ed05f54f 142 {
mbed_official 0:7037ed05f54f 143 uint16_t packet_len;
mbed_official 0:7037ed05f54f 144 int16_t retcode;
marcozecchini 50:6e615eea1e6f 145 printf("\n\rHello world");
mbed_official 0:7037ed05f54f 146
marcozecchini 50:6e615eea1e6f 147 packet_len = sprintf((char *) tx_buffer, "Hello world");
mbed_official 0:7037ed05f54f 148
mbed_official 2:dc95ac6d6d4e 149 retcode = lorawan.send(MBED_CONF_LORA_APP_PORT, tx_buffer, packet_len,
mbed_official 47:b6d132f1079f 150 MSG_UNCONFIRMED_FLAG);
mbed_official 0:7037ed05f54f 151
mbed_official 0:7037ed05f54f 152 if (retcode < 0) {
mbed_official 0:7037ed05f54f 153 retcode == LORAWAN_STATUS_WOULD_BLOCK ? printf("send - WOULD BLOCK\r\n")
mbed_official 46:a124538e2891 154 : printf("\r\n send() - Error code %d \r\n", retcode);
mbed_official 26:f07f5febf97f 155
mbed_official 26:f07f5febf97f 156 if (retcode == LORAWAN_STATUS_WOULD_BLOCK) {
mbed_official 26:f07f5febf97f 157 //retry in 3 seconds
mbed_official 26:f07f5febf97f 158 if (MBED_CONF_LORA_DUTY_CYCLE_ON) {
mbed_official 26:f07f5febf97f 159 ev_queue.call_in(3000, send_message);
mbed_official 26:f07f5febf97f 160 }
mbed_official 26:f07f5febf97f 161 }
mbed_official 0:7037ed05f54f 162 return;
mbed_official 0:7037ed05f54f 163 }
mbed_official 0:7037ed05f54f 164
mbed_official 0:7037ed05f54f 165 printf("\r\n %d bytes scheduled for transmission \r\n", retcode);
mbed_official 12:5015dfead3f2 166 memset(tx_buffer, 0, sizeof(tx_buffer));
mbed_official 0:7037ed05f54f 167 }
mbed_official 0:7037ed05f54f 168
mbed_official 0:7037ed05f54f 169 /**
mbed_official 0:7037ed05f54f 170 * Event handler
mbed_official 0:7037ed05f54f 171 */
mbed_official 0:7037ed05f54f 172 static void lora_event_handler(lorawan_event_t event)
mbed_official 0:7037ed05f54f 173 {
mbed_official 0:7037ed05f54f 174 switch (event) {
mbed_official 0:7037ed05f54f 175 case CONNECTED:
mbed_official 0:7037ed05f54f 176 printf("\r\n Connection - Successful \r\n");
mbed_official 0:7037ed05f54f 177 if (MBED_CONF_LORA_DUTY_CYCLE_ON) {
mbed_official 0:7037ed05f54f 178 send_message();
mbed_official 0:7037ed05f54f 179 } else {
mbed_official 0:7037ed05f54f 180 ev_queue.call_every(TX_TIMER, send_message);
mbed_official 0:7037ed05f54f 181 }
mbed_official 0:7037ed05f54f 182
mbed_official 0:7037ed05f54f 183 break;
mbed_official 0:7037ed05f54f 184 case DISCONNECTED:
mbed_official 0:7037ed05f54f 185 ev_queue.break_dispatch();
mbed_official 0:7037ed05f54f 186 printf("\r\n Disconnected Successfully \r\n");
mbed_official 0:7037ed05f54f 187 break;
mbed_official 0:7037ed05f54f 188 case TX_DONE:
mbed_official 0:7037ed05f54f 189 printf("\r\n Message Sent to Network Server \r\n");
mbed_official 0:7037ed05f54f 190 if (MBED_CONF_LORA_DUTY_CYCLE_ON) {
mbed_official 0:7037ed05f54f 191 send_message();
mbed_official 0:7037ed05f54f 192 }
mbed_official 0:7037ed05f54f 193 break;
mbed_official 0:7037ed05f54f 194 case TX_TIMEOUT:
mbed_official 0:7037ed05f54f 195 case TX_ERROR:
mbed_official 0:7037ed05f54f 196 case TX_CRYPTO_ERROR:
mbed_official 0:7037ed05f54f 197 case TX_SCHEDULING_ERROR:
mbed_official 0:7037ed05f54f 198 printf("\r\n Transmission Error - EventCode = %d \r\n", event);
mbed_official 0:7037ed05f54f 199 // try again
mbed_official 0:7037ed05f54f 200 if (MBED_CONF_LORA_DUTY_CYCLE_ON) {
mbed_official 0:7037ed05f54f 201 send_message();
mbed_official 0:7037ed05f54f 202 }
mbed_official 0:7037ed05f54f 203 break;
mbed_official 0:7037ed05f54f 204 case RX_DONE:
mbed_official 0:7037ed05f54f 205 printf("\r\n Received message from Network Server \r\n");
mbed_official 0:7037ed05f54f 206 break;
mbed_official 0:7037ed05f54f 207 case RX_TIMEOUT:
mbed_official 0:7037ed05f54f 208 case RX_ERROR:
mbed_official 0:7037ed05f54f 209 printf("\r\n Error in reception - Code = %d \r\n", event);
mbed_official 0:7037ed05f54f 210 break;
mbed_official 0:7037ed05f54f 211 case JOIN_FAILURE:
mbed_official 0:7037ed05f54f 212 printf("\r\n OTAA Failed - Check Keys \r\n");
mbed_official 0:7037ed05f54f 213 break;
mbed_official 26:f07f5febf97f 214 case UPLINK_REQUIRED:
mbed_official 26:f07f5febf97f 215 printf("\r\n Uplink required by NS \r\n");
mbed_official 26:f07f5febf97f 216 if (MBED_CONF_LORA_DUTY_CYCLE_ON) {
mbed_official 26:f07f5febf97f 217 send_message();
mbed_official 26:f07f5febf97f 218 }
mbed_official 26:f07f5febf97f 219 break;
mbed_official 0:7037ed05f54f 220 default:
mbed_official 0:7037ed05f54f 221 MBED_ASSERT("Unknown Event");
mbed_official 0:7037ed05f54f 222 }
mbed_official 0:7037ed05f54f 223 }
mbed_official 0:7037ed05f54f 224
mbed_official 0:7037ed05f54f 225 // EOF