Narasing Sarwade / Mbed OS CAMSecuritySystem_rfid

lora

main.cpp@0:7037ed05f54f, 2018-03-08 (annotated)

Committer:
mbed_official
Date:
Thu Mar 08 17:46:15 2018 +0000
Revision:
0:7037ed05f54f
Child:
2:dc95ac6d6d4e
Fix construction of LoRaWANInterface object



Since radio object is constructed by another source file, we have a

race condition. In order to prevent this race condition, LoRaWANInterface

object is now created in main().



.

Commit copied from https://github.com/ARMmbed/mbed-os-example-lorawan

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 0:7037ed05f54f 18 #include "lorawan/LoRaWANInterface.h"
mbed_official 0:7037ed05f54f 19 #include "lorawan/system/lorawan_data_structures.h"
mbed_official 0:7037ed05f54f 20 #include "events/EventQueue.h"
mbed_official 0:7037ed05f54f 21
mbed_official 0:7037ed05f54f 22 // Application helpers
mbed_official 0:7037ed05f54f 23 #include "DummySensor.h"
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 0:7037ed05f54f 29 uint8_t tx_buffer[LORAMAC_PHY_MAXPAYLOAD];
mbed_official 0:7037ed05f54f 30 uint8_t rx_buffer[LORAMAC_PHY_MAXPAYLOAD];
mbed_official 0:7037ed05f54f 31
mbed_official 0:7037ed05f54f 32 /*
mbed_official 0:7037ed05f54f 33 * Sets up an application dependent transmission timer in ms. Used only when Duty Cycling is off for testing
mbed_official 0:7037ed05f54f 34 */
mbed_official 0:7037ed05f54f 35 #define TX_TIMER 10000
mbed_official 0:7037ed05f54f 36
mbed_official 0:7037ed05f54f 37 /**
mbed_official 0:7037ed05f54f 38 * Maximum number of events for the event queue.
mbed_official 0:7037ed05f54f 39 * 16 is the safe number for the stack events, however, if application
mbed_official 0:7037ed05f54f 40 * also uses the queue for whatever purposes, this number should be increased.
mbed_official 0:7037ed05f54f 41 */
mbed_official 0:7037ed05f54f 42 #define MAX_NUMBER_OF_EVENTS 16
mbed_official 0:7037ed05f54f 43
mbed_official 0:7037ed05f54f 44 /**
mbed_official 0:7037ed05f54f 45 * Maximum number of retries for CONFIRMED messages before giving up
mbed_official 0:7037ed05f54f 46 */
mbed_official 0:7037ed05f54f 47 #define CONFIRMED_MSG_RETRY_COUNTER 3
mbed_official 0:7037ed05f54f 48
mbed_official 0:7037ed05f54f 49 /**
mbed_official 0:7037ed05f54f 50 * Dummy pin for dummy sensor
mbed_official 0:7037ed05f54f 51 */
mbed_official 0:7037ed05f54f 52 #define PC_9 0
mbed_official 0:7037ed05f54f 53
mbed_official 0:7037ed05f54f 54 /**
mbed_official 0:7037ed05f54f 55 * Dummy sensor class object
mbed_official 0:7037ed05f54f 56 */
mbed_official 0:7037ed05f54f 57 DS1820 ds1820(PC_9);
mbed_official 0:7037ed05f54f 58
mbed_official 0:7037ed05f54f 59 /**
mbed_official 0:7037ed05f54f 60 * This event queue is the global event queue for both the
mbed_official 0:7037ed05f54f 61 * application and stack. To conserve memory, the stack is designed to run
mbed_official 0:7037ed05f54f 62 * in the same thread as the application and the application is responsible for
mbed_official 0:7037ed05f54f 63 * providing an event queue to the stack that will be used for ISR deferment as
mbed_official 0:7037ed05f54f 64 * well as application information event queuing.
mbed_official 0:7037ed05f54f 65 */
mbed_official 0:7037ed05f54f 66 static EventQueue ev_queue(MAX_NUMBER_OF_EVENTS * EVENTS_EVENT_SIZE);
mbed_official 0:7037ed05f54f 67
mbed_official 0:7037ed05f54f 68 /**
mbed_official 0:7037ed05f54f 69 * Event handler.
mbed_official 0:7037ed05f54f 70 *
mbed_official 0:7037ed05f54f 71 * This will be passed to the LoRaWAN stack to queue events for the
mbed_official 0:7037ed05f54f 72 * application which in turn drive the application.
mbed_official 0:7037ed05f54f 73 */
mbed_official 0:7037ed05f54f 74 static void lora_event_handler(lorawan_event_t event);
mbed_official 0:7037ed05f54f 75
mbed_official 0:7037ed05f54f 76 /**
mbed_official 0:7037ed05f54f 77 * Pointer to LoRaWAN interface
mbed_official 0:7037ed05f54f 78 */
mbed_official 0:7037ed05f54f 79 static LoRaWANInterface* lorawan = NULL;
mbed_official 0:7037ed05f54f 80
mbed_official 0:7037ed05f54f 81 /**
mbed_official 0:7037ed05f54f 82 * Application specific callbacks
mbed_official 0:7037ed05f54f 83 */
mbed_official 0:7037ed05f54f 84 static lorawan_app_callbacks_t callbacks;
mbed_official 0:7037ed05f54f 85
mbed_official 0:7037ed05f54f 86 /**
mbed_official 0:7037ed05f54f 87 * Entry point for application
mbed_official 0:7037ed05f54f 88 */
mbed_official 0:7037ed05f54f 89 int main (void)
mbed_official 0:7037ed05f54f 90 {
mbed_official 0:7037ed05f54f 91 // Constructing Mbed LoRaWANInterface and passing it down the radio object.
mbed_official 0:7037ed05f54f 92 LoRaWANInterface lora(get_lora_radio());
mbed_official 0:7037ed05f54f 93 lorawan = &lora;
mbed_official 0:7037ed05f54f 94
mbed_official 0:7037ed05f54f 95 // setup tracing
mbed_official 0:7037ed05f54f 96 setup_trace();
mbed_official 0:7037ed05f54f 97
mbed_official 0:7037ed05f54f 98 // stores the status of a call to LoRaWAN protocol
mbed_official 0:7037ed05f54f 99 lorawan_status_t retcode;
mbed_official 0:7037ed05f54f 100
mbed_official 0:7037ed05f54f 101 // Initialize LoRaWAN stack
mbed_official 0:7037ed05f54f 102 if (lorawan->initialize(&ev_queue) != LORAWAN_STATUS_OK) {
mbed_official 0:7037ed05f54f 103 printf("\r\n LoRa initialization failed! \r\n");
mbed_official 0:7037ed05f54f 104 return -1;
mbed_official 0:7037ed05f54f 105 }
mbed_official 0:7037ed05f54f 106
mbed_official 0:7037ed05f54f 107 printf("\r\n Mbed LoRaWANStack initialized \r\n");
mbed_official 0:7037ed05f54f 108
mbed_official 0:7037ed05f54f 109 // prepare application callbacks
mbed_official 0:7037ed05f54f 110 callbacks.events = mbed::callback(lora_event_handler);
mbed_official 0:7037ed05f54f 111 lorawan->add_app_callbacks(&callbacks);
mbed_official 0:7037ed05f54f 112
mbed_official 0:7037ed05f54f 113 // Set number of retries in case of CONFIRMED messages
mbed_official 0:7037ed05f54f 114 if (lorawan->set_confirmed_msg_retries(CONFIRMED_MSG_RETRY_COUNTER)
mbed_official 0:7037ed05f54f 115 != LORAWAN_STATUS_OK) {
mbed_official 0:7037ed05f54f 116 printf("\r\n set_confirmed_msg_retries failed! \r\n\r\n");
mbed_official 0:7037ed05f54f 117 return -1;
mbed_official 0:7037ed05f54f 118 }
mbed_official 0:7037ed05f54f 119
mbed_official 0:7037ed05f54f 120 printf("\r\n CONFIRMED message retries : %d \r\n",
mbed_official 0:7037ed05f54f 121 CONFIRMED_MSG_RETRY_COUNTER);
mbed_official 0:7037ed05f54f 122
mbed_official 0:7037ed05f54f 123 // Enable adaptive data rate
mbed_official 0:7037ed05f54f 124 if (lorawan->enable_adaptive_datarate() != LORAWAN_STATUS_OK) {
mbed_official 0:7037ed05f54f 125 printf("\r\n enable_adaptive_datarate failed! \r\n");
mbed_official 0:7037ed05f54f 126 return -1;
mbed_official 0:7037ed05f54f 127 }
mbed_official 0:7037ed05f54f 128
mbed_official 0:7037ed05f54f 129 printf("\r\n Adaptive data rate (ADR) - Enabled \r\n");
mbed_official 0:7037ed05f54f 130
mbed_official 0:7037ed05f54f 131 retcode = lorawan->connect();
mbed_official 0:7037ed05f54f 132
mbed_official 0:7037ed05f54f 133 if (retcode == LORAWAN_STATUS_OK ||
mbed_official 0:7037ed05f54f 134 retcode == LORAWAN_STATUS_CONNECT_IN_PROGRESS) {
mbed_official 0:7037ed05f54f 135 } else {
mbed_official 0:7037ed05f54f 136 printf("\r\n Connection error, code = %d \r\n", retcode);
mbed_official 0:7037ed05f54f 137 return -1;
mbed_official 0:7037ed05f54f 138 }
mbed_official 0:7037ed05f54f 139
mbed_official 0:7037ed05f54f 140 printf("\r\n Connection - In Progress ...\r\n");
mbed_official 0:7037ed05f54f 141
mbed_official 0:7037ed05f54f 142 // make your event queue dispatching events forever
mbed_official 0:7037ed05f54f 143 ev_queue.dispatch_forever();
mbed_official 0:7037ed05f54f 144 }
mbed_official 0:7037ed05f54f 145
mbed_official 0:7037ed05f54f 146 /**
mbed_official 0:7037ed05f54f 147 * Sends a message to the Network Server
mbed_official 0:7037ed05f54f 148 */
mbed_official 0:7037ed05f54f 149 static void send_message()
mbed_official 0:7037ed05f54f 150 {
mbed_official 0:7037ed05f54f 151 uint16_t packet_len;
mbed_official 0:7037ed05f54f 152 int16_t retcode;
mbed_official 0:7037ed05f54f 153 float sensor_value;
mbed_official 0:7037ed05f54f 154
mbed_official 0:7037ed05f54f 155 if (ds1820.begin()) {
mbed_official 0:7037ed05f54f 156 ds1820.startConversion();
mbed_official 0:7037ed05f54f 157 sensor_value = ds1820.read();
mbed_official 0:7037ed05f54f 158 printf("\r\n Dummy Sensor Value = %3.1f \r\n", sensor_value);
mbed_official 0:7037ed05f54f 159 ds1820.startConversion();
mbed_official 0:7037ed05f54f 160 } else {
mbed_official 0:7037ed05f54f 161 printf("\r\n No sensor found \r\n");
mbed_official 0:7037ed05f54f 162 return;
mbed_official 0:7037ed05f54f 163 }
mbed_official 0:7037ed05f54f 164
mbed_official 0:7037ed05f54f 165 packet_len = sprintf((char*) tx_buffer, "Dummy Sensor Value is %3.1f",
mbed_official 0:7037ed05f54f 166 sensor_value);
mbed_official 0:7037ed05f54f 167
mbed_official 0:7037ed05f54f 168 retcode = lorawan->send(MBED_CONF_LORA_APP_PORT, tx_buffer, packet_len,
mbed_official 0:7037ed05f54f 169 MSG_CONFIRMED_FLAG);
mbed_official 0:7037ed05f54f 170
mbed_official 0:7037ed05f54f 171 if (retcode < 0) {
mbed_official 0:7037ed05f54f 172 retcode == LORAWAN_STATUS_WOULD_BLOCK ? printf("send - WOULD BLOCK\r\n")
mbed_official 0:7037ed05f54f 173 : printf("\r\n send() - Error code %d \r\n", retcode);
mbed_official 0:7037ed05f54f 174 return;
mbed_official 0:7037ed05f54f 175 }
mbed_official 0:7037ed05f54f 176
mbed_official 0:7037ed05f54f 177 printf("\r\n %d bytes scheduled for transmission \r\n", retcode);
mbed_official 0:7037ed05f54f 178 memset(tx_buffer, 0, LORAMAC_PHY_MAXPAYLOAD);
mbed_official 0:7037ed05f54f 179 }
mbed_official 0:7037ed05f54f 180
mbed_official 0:7037ed05f54f 181 /**
mbed_official 0:7037ed05f54f 182 * Receive a message from the Network Server
mbed_official 0:7037ed05f54f 183 */
mbed_official 0:7037ed05f54f 184 static void receive_message()
mbed_official 0:7037ed05f54f 185 {
mbed_official 0:7037ed05f54f 186 int16_t retcode;
mbed_official 0:7037ed05f54f 187 retcode = lorawan->receive(MBED_CONF_LORA_APP_PORT, rx_buffer,
mbed_official 0:7037ed05f54f 188 LORAMAC_PHY_MAXPAYLOAD,
mbed_official 0:7037ed05f54f 189 MSG_CONFIRMED_FLAG|MSG_UNCONFIRMED_FLAG);
mbed_official 0:7037ed05f54f 190
mbed_official 0:7037ed05f54f 191 if (retcode < 0) {
mbed_official 0:7037ed05f54f 192 printf("\r\n receive() - Error code %d \r\n", retcode);
mbed_official 0:7037ed05f54f 193 return;
mbed_official 0:7037ed05f54f 194 }
mbed_official 0:7037ed05f54f 195
mbed_official 0:7037ed05f54f 196 printf(" Data:");
mbed_official 0:7037ed05f54f 197
mbed_official 0:7037ed05f54f 198 for (uint8_t i = 0; i < retcode; i++) {
mbed_official 0:7037ed05f54f 199 printf("%x", rx_buffer[i]);
mbed_official 0:7037ed05f54f 200 }
mbed_official 0:7037ed05f54f 201
mbed_official 0:7037ed05f54f 202 printf("\r\n Data Length: %d\r\n", retcode);
mbed_official 0:7037ed05f54f 203
mbed_official 0:7037ed05f54f 204 memset(rx_buffer, 0, LORAMAC_PHY_MAXPAYLOAD);
mbed_official 0:7037ed05f54f 205 }
mbed_official 0:7037ed05f54f 206
mbed_official 0:7037ed05f54f 207 /**
mbed_official 0:7037ed05f54f 208 * Event handler
mbed_official 0:7037ed05f54f 209 */
mbed_official 0:7037ed05f54f 210 static void lora_event_handler(lorawan_event_t event)
mbed_official 0:7037ed05f54f 211 {
mbed_official 0:7037ed05f54f 212 switch (event) {
mbed_official 0:7037ed05f54f 213 case CONNECTED:
mbed_official 0:7037ed05f54f 214 printf("\r\n Connection - Successful \r\n");
mbed_official 0:7037ed05f54f 215 if (MBED_CONF_LORA_DUTY_CYCLE_ON) {
mbed_official 0:7037ed05f54f 216 send_message();
mbed_official 0:7037ed05f54f 217 } else {
mbed_official 0:7037ed05f54f 218 ev_queue.call_every(TX_TIMER, send_message);
mbed_official 0:7037ed05f54f 219 }
mbed_official 0:7037ed05f54f 220
mbed_official 0:7037ed05f54f 221 break;
mbed_official 0:7037ed05f54f 222 case DISCONNECTED:
mbed_official 0:7037ed05f54f 223 ev_queue.break_dispatch();
mbed_official 0:7037ed05f54f 224 printf("\r\n Disconnected Successfully \r\n");
mbed_official 0:7037ed05f54f 225 break;
mbed_official 0:7037ed05f54f 226 case TX_DONE:
mbed_official 0:7037ed05f54f 227 printf("\r\n Message Sent to Network Server \r\n");
mbed_official 0:7037ed05f54f 228 if (MBED_CONF_LORA_DUTY_CYCLE_ON) {
mbed_official 0:7037ed05f54f 229 send_message();
mbed_official 0:7037ed05f54f 230 }
mbed_official 0:7037ed05f54f 231 break;
mbed_official 0:7037ed05f54f 232 case TX_TIMEOUT:
mbed_official 0:7037ed05f54f 233 case TX_ERROR:
mbed_official 0:7037ed05f54f 234 case TX_CRYPTO_ERROR:
mbed_official 0:7037ed05f54f 235 case TX_SCHEDULING_ERROR:
mbed_official 0:7037ed05f54f 236 printf("\r\n Transmission Error - EventCode = %d \r\n", event);
mbed_official 0:7037ed05f54f 237 // try again
mbed_official 0:7037ed05f54f 238 if (MBED_CONF_LORA_DUTY_CYCLE_ON) {
mbed_official 0:7037ed05f54f 239 send_message();
mbed_official 0:7037ed05f54f 240 }
mbed_official 0:7037ed05f54f 241 break;
mbed_official 0:7037ed05f54f 242 case RX_DONE:
mbed_official 0:7037ed05f54f 243 printf("\r\n Received message from Network Server \r\n");
mbed_official 0:7037ed05f54f 244 receive_message();
mbed_official 0:7037ed05f54f 245 break;
mbed_official 0:7037ed05f54f 246 case RX_TIMEOUT:
mbed_official 0:7037ed05f54f 247 case RX_ERROR:
mbed_official 0:7037ed05f54f 248 printf("\r\n Error in reception - Code = %d \r\n", event);
mbed_official 0:7037ed05f54f 249 break;
mbed_official 0:7037ed05f54f 250 case JOIN_FAILURE:
mbed_official 0:7037ed05f54f 251 printf("\r\n OTAA Failed - Check Keys \r\n");
mbed_official 0:7037ed05f54f 252 break;
mbed_official 0:7037ed05f54f 253 default:
mbed_official 0:7037ed05f54f 254 MBED_ASSERT("Unknown Event");
mbed_official 0:7037ed05f54f 255 }
mbed_official 0:7037ed05f54f 256 }
mbed_official 0:7037ed05f54f 257
mbed_official 0:7037ed05f54f 258 // EOF