Future Electronics / Mbed OS mbed-os-example-lorawan-sequana

Fork of the official LoRaWAN example adapted for Future Electronic's Sequana board with SX1272MB2DAS LoRa shield.

main.cpp@47:b6d132f1079f, 2019-01-27 (annotated)

Committer:
mbed_official
Date:
Sun Jan 27 21:45:34 2019 +0000
Revision:
47:b6d132f1079f
Parent:
46:a124538e2891
Child:
56:39847849d219
Updating mbed-os to mbed-os-5.11.2



.

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 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 "DummySensor.h"
mbed_official 0:7037ed05f54f 25 #include "trace_helper.h"
mbed_official 0:7037ed05f54f 26 #include "lora_radio_helper.h"
mbed_official 0:7037ed05f54f 27
mbed_official 0:7037ed05f54f 28 using namespace events;
mbed_official 0:7037ed05f54f 29
mbed_official 12:5015dfead3f2 30 // Max payload size can be LORAMAC_PHY_MAXPAYLOAD.
mbed_official 12:5015dfead3f2 31 // This example only communicates with much shorter messages (<30 bytes).
mbed_official 12:5015dfead3f2 32 // If longer messages are used, these buffers must be changed accordingly.
mbed_official 12:5015dfead3f2 33 uint8_t tx_buffer[30];
mbed_official 12:5015dfead3f2 34 uint8_t rx_buffer[30];
mbed_official 0:7037ed05f54f 35
mbed_official 0:7037ed05f54f 36 /*
mbed_official 0:7037ed05f54f 37 * Sets up an application dependent transmission timer in ms. Used only when Duty Cycling is off for testing
mbed_official 0:7037ed05f54f 38 */
mbed_official 0:7037ed05f54f 39 #define TX_TIMER 10000
mbed_official 0:7037ed05f54f 40
mbed_official 0:7037ed05f54f 41 /**
mbed_official 0:7037ed05f54f 42 * Maximum number of events for the event queue.
mbed_official 12:5015dfead3f2 43 * 10 is the safe number for the stack events, however, if application
mbed_official 0:7037ed05f54f 44 * also uses the queue for whatever purposes, this number should be increased.
mbed_official 0:7037ed05f54f 45 */
mbed_official 12:5015dfead3f2 46 #define MAX_NUMBER_OF_EVENTS 10
mbed_official 0:7037ed05f54f 47
mbed_official 0:7037ed05f54f 48 /**
mbed_official 0:7037ed05f54f 49 * Maximum number of retries for CONFIRMED messages before giving up
mbed_official 0:7037ed05f54f 50 */
mbed_official 0:7037ed05f54f 51 #define CONFIRMED_MSG_RETRY_COUNTER 3
mbed_official 0:7037ed05f54f 52
mbed_official 0:7037ed05f54f 53 /**
mbed_official 0:7037ed05f54f 54 * Dummy pin for dummy sensor
mbed_official 0:7037ed05f54f 55 */
mbed_official 0:7037ed05f54f 56 #define PC_9 0
mbed_official 0:7037ed05f54f 57
mbed_official 0:7037ed05f54f 58 /**
mbed_official 0:7037ed05f54f 59 * Dummy sensor class object
mbed_official 0:7037ed05f54f 60 */
mbed_official 0:7037ed05f54f 61 DS1820 ds1820(PC_9);
mbed_official 0:7037ed05f54f 62
mbed_official 0:7037ed05f54f 63 /**
mbed_official 0:7037ed05f54f 64 * This event queue is the global event queue for both the
mbed_official 0:7037ed05f54f 65 * application and stack. To conserve memory, the stack is designed to run
mbed_official 0:7037ed05f54f 66 * in the same thread as the application and the application is responsible for
mbed_official 0:7037ed05f54f 67 * providing an event queue to the stack that will be used for ISR deferment as
mbed_official 0:7037ed05f54f 68 * well as application information event queuing.
mbed_official 0:7037ed05f54f 69 */
mbed_official 46:a124538e2891 70 static EventQueue ev_queue(MAX_NUMBER_OF_EVENTS *EVENTS_EVENT_SIZE);
mbed_official 0:7037ed05f54f 71
mbed_official 0:7037ed05f54f 72 /**
mbed_official 0:7037ed05f54f 73 * Event handler.
mbed_official 0:7037ed05f54f 74 *
mbed_official 0:7037ed05f54f 75 * This will be passed to the LoRaWAN stack to queue events for the
mbed_official 0:7037ed05f54f 76 * application which in turn drive the application.
mbed_official 0:7037ed05f54f 77 */
mbed_official 0:7037ed05f54f 78 static void lora_event_handler(lorawan_event_t event);
mbed_official 0:7037ed05f54f 79
mbed_official 0:7037ed05f54f 80 /**
mbed_official 46:a124538e2891 81 * Constructing Mbed LoRaWANInterface and passing it the radio object from lora_radio_helper.
mbed_official 0:7037ed05f54f 82 */
mbed_official 2:dc95ac6d6d4e 83 static LoRaWANInterface lorawan(radio);
mbed_official 0:7037ed05f54f 84
mbed_official 0:7037ed05f54f 85 /**
mbed_official 0:7037ed05f54f 86 * Application specific callbacks
mbed_official 0:7037ed05f54f 87 */
mbed_official 0:7037ed05f54f 88 static lorawan_app_callbacks_t callbacks;
mbed_official 0:7037ed05f54f 89
mbed_official 0:7037ed05f54f 90 /**
mbed_official 0:7037ed05f54f 91 * Entry point for application
mbed_official 0:7037ed05f54f 92 */
mbed_official 46:a124538e2891 93 int main(void)
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 2:dc95ac6d6d4e 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 2:dc95ac6d6d4e 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 2:dc95ac6d6d4e 114 if (lorawan.set_confirmed_msg_retries(CONFIRMED_MSG_RETRY_COUNTER)
mbed_official 46:a124538e2891 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 2:dc95ac6d6d4e 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 2:dc95ac6d6d4e 131 retcode = lorawan.connect();
mbed_official 0:7037ed05f54f 132
mbed_official 0:7037ed05f54f 133 if (retcode == LORAWAN_STATUS_OK ||
mbed_official 46:a124538e2891 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 3:8c7198d1a2a1 144
mbed_official 3:8c7198d1a2a1 145 return 0;
mbed_official 0:7037ed05f54f 146 }
mbed_official 0:7037ed05f54f 147
mbed_official 0:7037ed05f54f 148 /**
mbed_official 0:7037ed05f54f 149 * Sends a message to the Network Server
mbed_official 0:7037ed05f54f 150 */
mbed_official 0:7037ed05f54f 151 static void send_message()
mbed_official 0:7037ed05f54f 152 {
mbed_official 0:7037ed05f54f 153 uint16_t packet_len;
mbed_official 0:7037ed05f54f 154 int16_t retcode;
mbed_official 0:7037ed05f54f 155 float sensor_value;
mbed_official 0:7037ed05f54f 156
mbed_official 0:7037ed05f54f 157 if (ds1820.begin()) {
mbed_official 0:7037ed05f54f 158 ds1820.startConversion();
mbed_official 0:7037ed05f54f 159 sensor_value = ds1820.read();
mbed_official 0:7037ed05f54f 160 printf("\r\n Dummy Sensor Value = %3.1f \r\n", sensor_value);
mbed_official 0:7037ed05f54f 161 ds1820.startConversion();
mbed_official 0:7037ed05f54f 162 } else {
mbed_official 0:7037ed05f54f 163 printf("\r\n No sensor found \r\n");
mbed_official 0:7037ed05f54f 164 return;
mbed_official 0:7037ed05f54f 165 }
mbed_official 0:7037ed05f54f 166
mbed_official 46:a124538e2891 167 packet_len = sprintf((char *) tx_buffer, "Dummy Sensor Value is %3.1f",
mbed_official 46:a124538e2891 168 sensor_value);
mbed_official 0:7037ed05f54f 169
mbed_official 2:dc95ac6d6d4e 170 retcode = lorawan.send(MBED_CONF_LORA_APP_PORT, tx_buffer, packet_len,
mbed_official 47:b6d132f1079f 171 MSG_UNCONFIRMED_FLAG);
mbed_official 0:7037ed05f54f 172
mbed_official 0:7037ed05f54f 173 if (retcode < 0) {
mbed_official 0:7037ed05f54f 174 retcode == LORAWAN_STATUS_WOULD_BLOCK ? printf("send - WOULD BLOCK\r\n")
mbed_official 46:a124538e2891 175 : printf("\r\n send() - Error code %d \r\n", retcode);
mbed_official 26:f07f5febf97f 176
mbed_official 26:f07f5febf97f 177 if (retcode == LORAWAN_STATUS_WOULD_BLOCK) {
mbed_official 26:f07f5febf97f 178 //retry in 3 seconds
mbed_official 26:f07f5febf97f 179 if (MBED_CONF_LORA_DUTY_CYCLE_ON) {
mbed_official 26:f07f5febf97f 180 ev_queue.call_in(3000, send_message);
mbed_official 26:f07f5febf97f 181 }
mbed_official 26:f07f5febf97f 182 }
mbed_official 0:7037ed05f54f 183 return;
mbed_official 0:7037ed05f54f 184 }
mbed_official 0:7037ed05f54f 185
mbed_official 0:7037ed05f54f 186 printf("\r\n %d bytes scheduled for transmission \r\n", retcode);
mbed_official 12:5015dfead3f2 187 memset(tx_buffer, 0, sizeof(tx_buffer));
mbed_official 0:7037ed05f54f 188 }
mbed_official 0:7037ed05f54f 189
mbed_official 0:7037ed05f54f 190 /**
mbed_official 0:7037ed05f54f 191 * Receive a message from the Network Server
mbed_official 0:7037ed05f54f 192 */
mbed_official 0:7037ed05f54f 193 static void receive_message()
mbed_official 0:7037ed05f54f 194 {
mbed_official 47:b6d132f1079f 195 uint8_t port;
mbed_official 47:b6d132f1079f 196 int flags;
mbed_official 47:b6d132f1079f 197 int16_t retcode = lorawan.receive(rx_buffer, sizeof(rx_buffer), port, flags);
mbed_official 0:7037ed05f54f 198
mbed_official 0:7037ed05f54f 199 if (retcode < 0) {
mbed_official 0:7037ed05f54f 200 printf("\r\n receive() - Error code %d \r\n", retcode);
mbed_official 0:7037ed05f54f 201 return;
mbed_official 0:7037ed05f54f 202 }
mbed_official 0:7037ed05f54f 203
mbed_official 47:b6d132f1079f 204 printf(" RX Data on port %u (%d bytes): ", port, retcode);
mbed_official 0:7037ed05f54f 205 for (uint8_t i = 0; i < retcode; i++) {
mbed_official 47:b6d132f1079f 206 printf("%02x ", rx_buffer[i]);
mbed_official 0:7037ed05f54f 207 }
mbed_official 47:b6d132f1079f 208 printf("\r\n");
mbed_official 47:b6d132f1079f 209
mbed_official 12:5015dfead3f2 210 memset(rx_buffer, 0, sizeof(rx_buffer));
mbed_official 0:7037ed05f54f 211 }
mbed_official 0:7037ed05f54f 212
mbed_official 0:7037ed05f54f 213 /**
mbed_official 0:7037ed05f54f 214 * Event handler
mbed_official 0:7037ed05f54f 215 */
mbed_official 0:7037ed05f54f 216 static void lora_event_handler(lorawan_event_t event)
mbed_official 0:7037ed05f54f 217 {
mbed_official 0:7037ed05f54f 218 switch (event) {
mbed_official 0:7037ed05f54f 219 case CONNECTED:
mbed_official 0:7037ed05f54f 220 printf("\r\n Connection - Successful \r\n");
mbed_official 0:7037ed05f54f 221 if (MBED_CONF_LORA_DUTY_CYCLE_ON) {
mbed_official 0:7037ed05f54f 222 send_message();
mbed_official 0:7037ed05f54f 223 } else {
mbed_official 0:7037ed05f54f 224 ev_queue.call_every(TX_TIMER, send_message);
mbed_official 0:7037ed05f54f 225 }
mbed_official 0:7037ed05f54f 226
mbed_official 0:7037ed05f54f 227 break;
mbed_official 0:7037ed05f54f 228 case DISCONNECTED:
mbed_official 0:7037ed05f54f 229 ev_queue.break_dispatch();
mbed_official 0:7037ed05f54f 230 printf("\r\n Disconnected Successfully \r\n");
mbed_official 0:7037ed05f54f 231 break;
mbed_official 0:7037ed05f54f 232 case TX_DONE:
mbed_official 0:7037ed05f54f 233 printf("\r\n Message Sent to Network Server \r\n");
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 TX_TIMEOUT:
mbed_official 0:7037ed05f54f 239 case TX_ERROR:
mbed_official 0:7037ed05f54f 240 case TX_CRYPTO_ERROR:
mbed_official 0:7037ed05f54f 241 case TX_SCHEDULING_ERROR:
mbed_official 0:7037ed05f54f 242 printf("\r\n Transmission Error - EventCode = %d \r\n", event);
mbed_official 0:7037ed05f54f 243 // try again
mbed_official 0:7037ed05f54f 244 if (MBED_CONF_LORA_DUTY_CYCLE_ON) {
mbed_official 0:7037ed05f54f 245 send_message();
mbed_official 0:7037ed05f54f 246 }
mbed_official 0:7037ed05f54f 247 break;
mbed_official 0:7037ed05f54f 248 case RX_DONE:
mbed_official 0:7037ed05f54f 249 printf("\r\n Received message from Network Server \r\n");
mbed_official 0:7037ed05f54f 250 receive_message();
mbed_official 0:7037ed05f54f 251 break;
mbed_official 0:7037ed05f54f 252 case RX_TIMEOUT:
mbed_official 0:7037ed05f54f 253 case RX_ERROR:
mbed_official 0:7037ed05f54f 254 printf("\r\n Error in reception - Code = %d \r\n", event);
mbed_official 0:7037ed05f54f 255 break;
mbed_official 0:7037ed05f54f 256 case JOIN_FAILURE:
mbed_official 0:7037ed05f54f 257 printf("\r\n OTAA Failed - Check Keys \r\n");
mbed_official 0:7037ed05f54f 258 break;
mbed_official 26:f07f5febf97f 259 case UPLINK_REQUIRED:
mbed_official 26:f07f5febf97f 260 printf("\r\n Uplink required by NS \r\n");
mbed_official 26:f07f5febf97f 261 if (MBED_CONF_LORA_DUTY_CYCLE_ON) {
mbed_official 26:f07f5febf97f 262 send_message();
mbed_official 26:f07f5febf97f 263 }
mbed_official 26:f07f5febf97f 264 break;
mbed_official 0:7037ed05f54f 265 default:
mbed_official 0:7037ed05f54f 266 MBED_ASSERT("Unknown Event");
mbed_official 0:7037ed05f54f 267 }
mbed_official 0:7037ed05f54f 268 }
mbed_official 0:7037ed05f54f 269
mbed_official 0:7037ed05f54f 270 // EOF