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main.cpp@2:dc95ac6d6d4e, 2018-03-09 (annotated)

Committer:
mbed_official
Date:
Fri Mar 09 13:15:17 2018 +0000
Revision:
2:dc95ac6d6d4e
Parent:
0:7037ed05f54f
Child:
3:8c7198d1a2a1
Refactor construction of LoRaWANInterface object



This is refactoring of commit 59b4e195c39 to get rid of unnecessary pointer assignment.



.

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 2:dc95ac6d6d4e 77 * Constructing Mbed LoRaWANInterface and passing it down the radio object.
mbed_official 0:7037ed05f54f 78 */
mbed_official 2:dc95ac6d6d4e 79 static LoRaWANInterface lorawan(radio);
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 // setup tracing
mbed_official 0:7037ed05f54f 92 setup_trace();
mbed_official 0:7037ed05f54f 93
mbed_official 0:7037ed05f54f 94 // stores the status of a call to LoRaWAN protocol
mbed_official 0:7037ed05f54f 95 lorawan_status_t retcode;
mbed_official 0:7037ed05f54f 96
mbed_official 0:7037ed05f54f 97 // Initialize LoRaWAN stack
mbed_official 2:dc95ac6d6d4e 98 if (lorawan.initialize(&ev_queue) != LORAWAN_STATUS_OK) {
mbed_official 0:7037ed05f54f 99 printf("\r\n LoRa initialization failed! \r\n");
mbed_official 0:7037ed05f54f 100 return -1;
mbed_official 0:7037ed05f54f 101 }
mbed_official 0:7037ed05f54f 102
mbed_official 0:7037ed05f54f 103 printf("\r\n Mbed LoRaWANStack initialized \r\n");
mbed_official 0:7037ed05f54f 104
mbed_official 0:7037ed05f54f 105 // prepare application callbacks
mbed_official 0:7037ed05f54f 106 callbacks.events = mbed::callback(lora_event_handler);
mbed_official 2:dc95ac6d6d4e 107 lorawan.add_app_callbacks(&callbacks);
mbed_official 0:7037ed05f54f 108
mbed_official 0:7037ed05f54f 109 // Set number of retries in case of CONFIRMED messages
mbed_official 2:dc95ac6d6d4e 110 if (lorawan.set_confirmed_msg_retries(CONFIRMED_MSG_RETRY_COUNTER)
mbed_official 0:7037ed05f54f 111 != LORAWAN_STATUS_OK) {
mbed_official 0:7037ed05f54f 112 printf("\r\n set_confirmed_msg_retries failed! \r\n\r\n");
mbed_official 0:7037ed05f54f 113 return -1;
mbed_official 0:7037ed05f54f 114 }
mbed_official 0:7037ed05f54f 115
mbed_official 0:7037ed05f54f 116 printf("\r\n CONFIRMED message retries : %d \r\n",
mbed_official 0:7037ed05f54f 117 CONFIRMED_MSG_RETRY_COUNTER);
mbed_official 0:7037ed05f54f 118
mbed_official 0:7037ed05f54f 119 // Enable adaptive data rate
mbed_official 2:dc95ac6d6d4e 120 if (lorawan.enable_adaptive_datarate() != LORAWAN_STATUS_OK) {
mbed_official 0:7037ed05f54f 121 printf("\r\n enable_adaptive_datarate failed! \r\n");
mbed_official 0:7037ed05f54f 122 return -1;
mbed_official 0:7037ed05f54f 123 }
mbed_official 0:7037ed05f54f 124
mbed_official 0:7037ed05f54f 125 printf("\r\n Adaptive data rate (ADR) - Enabled \r\n");
mbed_official 0:7037ed05f54f 126
mbed_official 2:dc95ac6d6d4e 127 retcode = lorawan.connect();
mbed_official 0:7037ed05f54f 128
mbed_official 0:7037ed05f54f 129 if (retcode == LORAWAN_STATUS_OK ||
mbed_official 0:7037ed05f54f 130 retcode == LORAWAN_STATUS_CONNECT_IN_PROGRESS) {
mbed_official 0:7037ed05f54f 131 } else {
mbed_official 0:7037ed05f54f 132 printf("\r\n Connection error, code = %d \r\n", retcode);
mbed_official 0:7037ed05f54f 133 return -1;
mbed_official 0:7037ed05f54f 134 }
mbed_official 0:7037ed05f54f 135
mbed_official 0:7037ed05f54f 136 printf("\r\n Connection - In Progress ...\r\n");
mbed_official 0:7037ed05f54f 137
mbed_official 0:7037ed05f54f 138 // make your event queue dispatching events forever
mbed_official 0:7037ed05f54f 139 ev_queue.dispatch_forever();
mbed_official 0:7037ed05f54f 140 }
mbed_official 0:7037ed05f54f 141
mbed_official 0:7037ed05f54f 142 /**
mbed_official 0:7037ed05f54f 143 * Sends a message to the Network Server
mbed_official 0:7037ed05f54f 144 */
mbed_official 0:7037ed05f54f 145 static void send_message()
mbed_official 0:7037ed05f54f 146 {
mbed_official 0:7037ed05f54f 147 uint16_t packet_len;
mbed_official 0:7037ed05f54f 148 int16_t retcode;
mbed_official 0:7037ed05f54f 149 float sensor_value;
mbed_official 0:7037ed05f54f 150
mbed_official 0:7037ed05f54f 151 if (ds1820.begin()) {
mbed_official 0:7037ed05f54f 152 ds1820.startConversion();
mbed_official 0:7037ed05f54f 153 sensor_value = ds1820.read();
mbed_official 0:7037ed05f54f 154 printf("\r\n Dummy Sensor Value = %3.1f \r\n", sensor_value);
mbed_official 0:7037ed05f54f 155 ds1820.startConversion();
mbed_official 0:7037ed05f54f 156 } else {
mbed_official 0:7037ed05f54f 157 printf("\r\n No sensor found \r\n");
mbed_official 0:7037ed05f54f 158 return;
mbed_official 0:7037ed05f54f 159 }
mbed_official 0:7037ed05f54f 160
mbed_official 0:7037ed05f54f 161 packet_len = sprintf((char*) tx_buffer, "Dummy Sensor Value is %3.1f",
mbed_official 0:7037ed05f54f 162 sensor_value);
mbed_official 0:7037ed05f54f 163
mbed_official 2:dc95ac6d6d4e 164 retcode = lorawan.send(MBED_CONF_LORA_APP_PORT, tx_buffer, packet_len,
mbed_official 0:7037ed05f54f 165 MSG_CONFIRMED_FLAG);
mbed_official 0:7037ed05f54f 166
mbed_official 0:7037ed05f54f 167 if (retcode < 0) {
mbed_official 0:7037ed05f54f 168 retcode == LORAWAN_STATUS_WOULD_BLOCK ? printf("send - WOULD BLOCK\r\n")
mbed_official 0:7037ed05f54f 169 : printf("\r\n send() - Error code %d \r\n", retcode);
mbed_official 0:7037ed05f54f 170 return;
mbed_official 0:7037ed05f54f 171 }
mbed_official 0:7037ed05f54f 172
mbed_official 0:7037ed05f54f 173 printf("\r\n %d bytes scheduled for transmission \r\n", retcode);
mbed_official 0:7037ed05f54f 174 memset(tx_buffer, 0, LORAMAC_PHY_MAXPAYLOAD);
mbed_official 0:7037ed05f54f 175 }
mbed_official 0:7037ed05f54f 176
mbed_official 0:7037ed05f54f 177 /**
mbed_official 0:7037ed05f54f 178 * Receive a message from the Network Server
mbed_official 0:7037ed05f54f 179 */
mbed_official 0:7037ed05f54f 180 static void receive_message()
mbed_official 0:7037ed05f54f 181 {
mbed_official 0:7037ed05f54f 182 int16_t retcode;
mbed_official 2:dc95ac6d6d4e 183 retcode = lorawan.receive(MBED_CONF_LORA_APP_PORT, rx_buffer,
mbed_official 0:7037ed05f54f 184 LORAMAC_PHY_MAXPAYLOAD,
mbed_official 0:7037ed05f54f 185 MSG_CONFIRMED_FLAG|MSG_UNCONFIRMED_FLAG);
mbed_official 0:7037ed05f54f 186
mbed_official 0:7037ed05f54f 187 if (retcode < 0) {
mbed_official 0:7037ed05f54f 188 printf("\r\n receive() - Error code %d \r\n", retcode);
mbed_official 0:7037ed05f54f 189 return;
mbed_official 0:7037ed05f54f 190 }
mbed_official 0:7037ed05f54f 191
mbed_official 0:7037ed05f54f 192 printf(" Data:");
mbed_official 0:7037ed05f54f 193
mbed_official 0:7037ed05f54f 194 for (uint8_t i = 0; i < retcode; i++) {
mbed_official 0:7037ed05f54f 195 printf("%x", rx_buffer[i]);
mbed_official 0:7037ed05f54f 196 }
mbed_official 0:7037ed05f54f 197
mbed_official 0:7037ed05f54f 198 printf("\r\n Data Length: %d\r\n", retcode);
mbed_official 0:7037ed05f54f 199
mbed_official 0:7037ed05f54f 200 memset(rx_buffer, 0, LORAMAC_PHY_MAXPAYLOAD);
mbed_official 0:7037ed05f54f 201 }
mbed_official 0:7037ed05f54f 202
mbed_official 0:7037ed05f54f 203 /**
mbed_official 0:7037ed05f54f 204 * Event handler
mbed_official 0:7037ed05f54f 205 */
mbed_official 0:7037ed05f54f 206 static void lora_event_handler(lorawan_event_t event)
mbed_official 0:7037ed05f54f 207 {
mbed_official 0:7037ed05f54f 208 switch (event) {
mbed_official 0:7037ed05f54f 209 case CONNECTED:
mbed_official 0:7037ed05f54f 210 printf("\r\n Connection - Successful \r\n");
mbed_official 0:7037ed05f54f 211 if (MBED_CONF_LORA_DUTY_CYCLE_ON) {
mbed_official 0:7037ed05f54f 212 send_message();
mbed_official 0:7037ed05f54f 213 } else {
mbed_official 0:7037ed05f54f 214 ev_queue.call_every(TX_TIMER, send_message);
mbed_official 0:7037ed05f54f 215 }
mbed_official 0:7037ed05f54f 216
mbed_official 0:7037ed05f54f 217 break;
mbed_official 0:7037ed05f54f 218 case DISCONNECTED:
mbed_official 0:7037ed05f54f 219 ev_queue.break_dispatch();
mbed_official 0:7037ed05f54f 220 printf("\r\n Disconnected Successfully \r\n");
mbed_official 0:7037ed05f54f 221 break;
mbed_official 0:7037ed05f54f 222 case TX_DONE:
mbed_official 0:7037ed05f54f 223 printf("\r\n Message Sent to Network Server \r\n");
mbed_official 0:7037ed05f54f 224 if (MBED_CONF_LORA_DUTY_CYCLE_ON) {
mbed_official 0:7037ed05f54f 225 send_message();
mbed_official 0:7037ed05f54f 226 }
mbed_official 0:7037ed05f54f 227 break;
mbed_official 0:7037ed05f54f 228 case TX_TIMEOUT:
mbed_official 0:7037ed05f54f 229 case TX_ERROR:
mbed_official 0:7037ed05f54f 230 case TX_CRYPTO_ERROR:
mbed_official 0:7037ed05f54f 231 case TX_SCHEDULING_ERROR:
mbed_official 0:7037ed05f54f 232 printf("\r\n Transmission Error - EventCode = %d \r\n", event);
mbed_official 0:7037ed05f54f 233 // try again
mbed_official 0:7037ed05f54f 234 if (MBED_CONF_LORA_DUTY_CYCLE_ON) {
mbed_official 0:7037ed05f54f 235 send_message();
mbed_official 0:7037ed05f54f 236 }
mbed_official 0:7037ed05f54f 237 break;
mbed_official 0:7037ed05f54f 238 case RX_DONE:
mbed_official 0:7037ed05f54f 239 printf("\r\n Received message from Network Server \r\n");
mbed_official 0:7037ed05f54f 240 receive_message();
mbed_official 0:7037ed05f54f 241 break;
mbed_official 0:7037ed05f54f 242 case RX_TIMEOUT:
mbed_official 0:7037ed05f54f 243 case RX_ERROR:
mbed_official 0:7037ed05f54f 244 printf("\r\n Error in reception - Code = %d \r\n", event);
mbed_official 0:7037ed05f54f 245 break;
mbed_official 0:7037ed05f54f 246 case JOIN_FAILURE:
mbed_official 0:7037ed05f54f 247 printf("\r\n OTAA Failed - Check Keys \r\n");
mbed_official 0:7037ed05f54f 248 break;
mbed_official 0:7037ed05f54f 249 default:
mbed_official 0:7037ed05f54f 250 MBED_ASSERT("Unknown Event");
mbed_official 0:7037ed05f54f 251 }
mbed_official 0:7037ed05f54f 252 }
mbed_official 0:7037ed05f54f 253
mbed_official 0:7037ed05f54f 254 // EOF