Christian Dupaty / Mbed OS LORAWAN-TTN-CAYENNE-LM35

Demo program for LoRaWan with data formated for cayenne interface on mydevices.com Check on https://goo.gl/fTUDNc

Dependencies:   Cayenne-LPP

Demonstration d'un node LoRaWan sur carte : Discovery IOT STmicro : B-L072Z-LRWAN1 https://www.st.com/en/evaluation-tools/b-l072z-lrwan1.html

L e code original MBED-ARM : https://os.mbed.com/teams/mbed-os-examples/code/mbed-os-example-lorawan/ est une application de l'API LoRAWan https://os.mbed.com/docs/v5.9/reference/lorawan.html

Le code original a été adapté pour une carte B-L072Z-LRWAN1 équipée d'un capteur de température LM35 connecté en 3.3v sur le port PA_0 (port analogique AN0) Les données sont formatées "cayenne" et visualisables sur mydevices.com ( https://goo.gl/fTUDNc ) Documentation cayenne : https://mydevices.com/cayenne/docs/lora/#lora-cayenne-low-power-payload

Les essais ont été réalisés avec une passerelle TTN https://www.thethingsnetwork.org/ le "Payload Format" ayant été configuré pour "Cayenne LPP"

Des capteurs virtuels on été également ajoutés (humidité, température, lumière, etc...) pour les essais au format cayenne.

Données physiques transmises (downlink)

- Température sur capteur LM35 - Tension sur PA_1 (AN1) est transmise entre 0% et 100% - Etat du bouton bleu

Données physiques reçues (uplink) Un actionneur permet d'allumer/eteindre à distance la led verte de la carte B-L072Z-LRWAN1

L'interface mydevice.com proposé permet de visualiser :

- Les capteurs virtuels - La température réelle sur LM35 - L'état du bouton bleu

/media/uploads/cdupaty/cayenne_mydevice.jpg

/media/uploads/cdupaty/ex_terminal-lorawan.jpg

main.cpp@18:1720bc3831ea, 2018-05-15 (annotated)

Committer:
mbed_official
Date:
Tue May 15 13:15:17 2018 +0100
Revision:
18:1720bc3831ea
Parent:
12:5015dfead3f2
Child:
26:f07f5febf97f
Remove usage of DEVICE_SPI and MBED_CONF_APP_LORAWAN_ENABLED flags



mbed-os-example-lorawan project is now CI tested only for targets

which really have lora HW. Therefore DEVICE_SPI and MBED_CONF_APP_LORAWAN_ENABLED

are no longer needed.



.

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 0:7037ed05f54f 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 2:dc95ac6d6d4e 81 * Constructing Mbed LoRaWANInterface and passing it down the radio object.
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 0:7037ed05f54f 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 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 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 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 3:8c7198d1a2a1 144
mbed_official 3:8c7198d1a2a1 145 return 0;
mbed_official 0:7037ed05f54f 146 }
mbed_official 0:7037ed05f54f 147
mbed_official 3:8c7198d1a2a1 148
mbed_official 0:7037ed05f54f 149 /**
mbed_official 0:7037ed05f54f 150 * Sends a message to the Network Server
mbed_official 0:7037ed05f54f 151 */
mbed_official 0:7037ed05f54f 152 static void send_message()
mbed_official 0:7037ed05f54f 153 {
mbed_official 0:7037ed05f54f 154 uint16_t packet_len;
mbed_official 0:7037ed05f54f 155 int16_t retcode;
mbed_official 0:7037ed05f54f 156 float sensor_value;
mbed_official 0:7037ed05f54f 157
mbed_official 0:7037ed05f54f 158 if (ds1820.begin()) {
mbed_official 0:7037ed05f54f 159 ds1820.startConversion();
mbed_official 0:7037ed05f54f 160 sensor_value = ds1820.read();
mbed_official 0:7037ed05f54f 161 printf("\r\n Dummy Sensor Value = %3.1f \r\n", sensor_value);
mbed_official 0:7037ed05f54f 162 ds1820.startConversion();
mbed_official 0:7037ed05f54f 163 } else {
mbed_official 0:7037ed05f54f 164 printf("\r\n No sensor found \r\n");
mbed_official 0:7037ed05f54f 165 return;
mbed_official 0:7037ed05f54f 166 }
mbed_official 0:7037ed05f54f 167
mbed_official 0:7037ed05f54f 168 packet_len = sprintf((char*) tx_buffer, "Dummy Sensor Value is %3.1f",
mbed_official 0:7037ed05f54f 169 sensor_value);
mbed_official 0:7037ed05f54f 170
mbed_official 2:dc95ac6d6d4e 171 retcode = lorawan.send(MBED_CONF_LORA_APP_PORT, tx_buffer, packet_len,
mbed_official 0:7037ed05f54f 172 MSG_CONFIRMED_FLAG);
mbed_official 0:7037ed05f54f 173
mbed_official 0:7037ed05f54f 174 if (retcode < 0) {
mbed_official 0:7037ed05f54f 175 retcode == LORAWAN_STATUS_WOULD_BLOCK ? printf("send - WOULD BLOCK\r\n")
mbed_official 0:7037ed05f54f 176 : printf("\r\n send() - Error code %d \r\n", retcode);
mbed_official 0:7037ed05f54f 177 return;
mbed_official 0:7037ed05f54f 178 }
mbed_official 0:7037ed05f54f 179
mbed_official 0:7037ed05f54f 180 printf("\r\n %d bytes scheduled for transmission \r\n", retcode);
mbed_official 12:5015dfead3f2 181 memset(tx_buffer, 0, sizeof(tx_buffer));
mbed_official 0:7037ed05f54f 182 }
mbed_official 0:7037ed05f54f 183
mbed_official 0:7037ed05f54f 184 /**
mbed_official 0:7037ed05f54f 185 * Receive a message from the Network Server
mbed_official 0:7037ed05f54f 186 */
mbed_official 0:7037ed05f54f 187 static void receive_message()
mbed_official 0:7037ed05f54f 188 {
mbed_official 0:7037ed05f54f 189 int16_t retcode;
mbed_official 2:dc95ac6d6d4e 190 retcode = lorawan.receive(MBED_CONF_LORA_APP_PORT, rx_buffer,
mbed_official 12:5015dfead3f2 191 sizeof(rx_buffer),
mbed_official 0:7037ed05f54f 192 MSG_CONFIRMED_FLAG|MSG_UNCONFIRMED_FLAG);
mbed_official 0:7037ed05f54f 193
mbed_official 0:7037ed05f54f 194 if (retcode < 0) {
mbed_official 0:7037ed05f54f 195 printf("\r\n receive() - Error code %d \r\n", retcode);
mbed_official 0:7037ed05f54f 196 return;
mbed_official 0:7037ed05f54f 197 }
mbed_official 0:7037ed05f54f 198
mbed_official 0:7037ed05f54f 199 printf(" Data:");
mbed_official 0:7037ed05f54f 200
mbed_official 0:7037ed05f54f 201 for (uint8_t i = 0; i < retcode; i++) {
mbed_official 0:7037ed05f54f 202 printf("%x", rx_buffer[i]);
mbed_official 0:7037ed05f54f 203 }
mbed_official 0:7037ed05f54f 204
mbed_official 0:7037ed05f54f 205 printf("\r\n Data Length: %d\r\n", retcode);
mbed_official 0:7037ed05f54f 206
mbed_official 12:5015dfead3f2 207 memset(rx_buffer, 0, sizeof(rx_buffer));
mbed_official 0:7037ed05f54f 208 }
mbed_official 0:7037ed05f54f 209
mbed_official 0:7037ed05f54f 210 /**
mbed_official 0:7037ed05f54f 211 * Event handler
mbed_official 0:7037ed05f54f 212 */
mbed_official 0:7037ed05f54f 213 static void lora_event_handler(lorawan_event_t event)
mbed_official 0:7037ed05f54f 214 {
mbed_official 0:7037ed05f54f 215 switch (event) {
mbed_official 0:7037ed05f54f 216 case CONNECTED:
mbed_official 0:7037ed05f54f 217 printf("\r\n Connection - Successful \r\n");
mbed_official 0:7037ed05f54f 218 if (MBED_CONF_LORA_DUTY_CYCLE_ON) {
mbed_official 0:7037ed05f54f 219 send_message();
mbed_official 0:7037ed05f54f 220 } else {
mbed_official 0:7037ed05f54f 221 ev_queue.call_every(TX_TIMER, send_message);
mbed_official 0:7037ed05f54f 222 }
mbed_official 0:7037ed05f54f 223
mbed_official 0:7037ed05f54f 224 break;
mbed_official 0:7037ed05f54f 225 case DISCONNECTED:
mbed_official 0:7037ed05f54f 226 ev_queue.break_dispatch();
mbed_official 0:7037ed05f54f 227 printf("\r\n Disconnected Successfully \r\n");
mbed_official 0:7037ed05f54f 228 break;
mbed_official 0:7037ed05f54f 229 case TX_DONE:
mbed_official 0:7037ed05f54f 230 printf("\r\n Message Sent to Network Server \r\n");
mbed_official 0:7037ed05f54f 231 if (MBED_CONF_LORA_DUTY_CYCLE_ON) {
mbed_official 0:7037ed05f54f 232 send_message();
mbed_official 0:7037ed05f54f 233 }
mbed_official 0:7037ed05f54f 234 break;
mbed_official 0:7037ed05f54f 235 case TX_TIMEOUT:
mbed_official 0:7037ed05f54f 236 case TX_ERROR:
mbed_official 0:7037ed05f54f 237 case TX_CRYPTO_ERROR:
mbed_official 0:7037ed05f54f 238 case TX_SCHEDULING_ERROR:
mbed_official 0:7037ed05f54f 239 printf("\r\n Transmission Error - EventCode = %d \r\n", event);
mbed_official 0:7037ed05f54f 240 // try again
mbed_official 0:7037ed05f54f 241 if (MBED_CONF_LORA_DUTY_CYCLE_ON) {
mbed_official 0:7037ed05f54f 242 send_message();
mbed_official 0:7037ed05f54f 243 }
mbed_official 0:7037ed05f54f 244 break;
mbed_official 0:7037ed05f54f 245 case RX_DONE:
mbed_official 0:7037ed05f54f 246 printf("\r\n Received message from Network Server \r\n");
mbed_official 0:7037ed05f54f 247 receive_message();
mbed_official 0:7037ed05f54f 248 break;
mbed_official 0:7037ed05f54f 249 case RX_TIMEOUT:
mbed_official 0:7037ed05f54f 250 case RX_ERROR:
mbed_official 0:7037ed05f54f 251 printf("\r\n Error in reception - Code = %d \r\n", event);
mbed_official 0:7037ed05f54f 252 break;
mbed_official 0:7037ed05f54f 253 case JOIN_FAILURE:
mbed_official 0:7037ed05f54f 254 printf("\r\n OTAA Failed - Check Keys \r\n");
mbed_official 0:7037ed05f54f 255 break;
mbed_official 0:7037ed05f54f 256 default:
mbed_official 0:7037ed05f54f 257 MBED_ASSERT("Unknown Event");
mbed_official 0:7037ed05f54f 258 }
mbed_official 0:7037ed05f54f 259 }
mbed_official 0:7037ed05f54f 260
mbed_official 0:7037ed05f54f 261 // EOF