frank dunn / Mbed OS example-ttn-workshop

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Dependencies:   TinyGPSPlus

main.cpp@52:922d8fdaae44, 2020-07-05 (annotated)

Committer:
frank_dunn1
Date:
Sun Jul 05 20:31:13 2020 +0000
Revision:
52:922d8fdaae44
Parent:
50:6e615eea1e6f
Child:
53:a3344ee53c2c
change debug port

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>
frank_dunn1 52:922d8fdaae44 18 #include "mbed.h"
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
frank_dunn1 52:922d8fdaae44 52 //Serial pc(PC_11,PC_10);
frank_dunn1 52:922d8fdaae44 53 Serial pc(PA_9,PA_10);
mbed_official 0:7037ed05f54f 54 /**
mbed_official 0:7037ed05f54f 55 * This event queue is the global event queue for both the
mbed_official 0:7037ed05f54f 56 * application and stack. To conserve memory, the stack is designed to run
mbed_official 0:7037ed05f54f 57 * in the same thread as the application and the application is responsible for
mbed_official 0:7037ed05f54f 58 * providing an event queue to the stack that will be used for ISR deferment as
mbed_official 0:7037ed05f54f 59 * well as application information event queuing.
mbed_official 0:7037ed05f54f 60 */
mbed_official 46:a124538e2891 61 static EventQueue ev_queue(MAX_NUMBER_OF_EVENTS *EVENTS_EVENT_SIZE);
mbed_official 0:7037ed05f54f 62
mbed_official 0:7037ed05f54f 63 /**
mbed_official 0:7037ed05f54f 64 * Event handler.
mbed_official 0:7037ed05f54f 65 *
mbed_official 0:7037ed05f54f 66 * This will be passed to the LoRaWAN stack to queue events for the
mbed_official 0:7037ed05f54f 67 * application which in turn drive the application.
mbed_official 0:7037ed05f54f 68 */
mbed_official 0:7037ed05f54f 69 static void lora_event_handler(lorawan_event_t event);
mbed_official 0:7037ed05f54f 70
mbed_official 0:7037ed05f54f 71 /**
mbed_official 46:a124538e2891 72 * Constructing Mbed LoRaWANInterface and passing it the radio object from lora_radio_helper.
mbed_official 0:7037ed05f54f 73 */
mbed_official 2:dc95ac6d6d4e 74 static LoRaWANInterface lorawan(radio);
mbed_official 0:7037ed05f54f 75
mbed_official 0:7037ed05f54f 76 /**
mbed_official 0:7037ed05f54f 77 * Application specific callbacks
mbed_official 0:7037ed05f54f 78 */
mbed_official 0:7037ed05f54f 79 static lorawan_app_callbacks_t callbacks;
mbed_official 0:7037ed05f54f 80
mbed_official 0:7037ed05f54f 81 /**
mbed_official 0:7037ed05f54f 82 * Entry point for application
mbed_official 0:7037ed05f54f 83 */
mbed_official 46:a124538e2891 84 int main(void)
frank_dunn1 52:922d8fdaae44 85 {
frank_dunn1 52:922d8fdaae44 86 pc.printf("hello");
mbed_official 0:7037ed05f54f 87 // setup tracing
mbed_official 0:7037ed05f54f 88 setup_trace();
mbed_official 0:7037ed05f54f 89
mbed_official 0:7037ed05f54f 90 // stores the status of a call to LoRaWAN protocol
mbed_official 0:7037ed05f54f 91 lorawan_status_t retcode;
mbed_official 0:7037ed05f54f 92
mbed_official 0:7037ed05f54f 93 // Initialize LoRaWAN stack
mbed_official 2:dc95ac6d6d4e 94 if (lorawan.initialize(&ev_queue) != LORAWAN_STATUS_OK) {
frank_dunn1 52:922d8fdaae44 95 pc.printf("\r\n LoRa initialization failed! \r\n");
mbed_official 0:7037ed05f54f 96 return -1;
mbed_official 0:7037ed05f54f 97 }
mbed_official 0:7037ed05f54f 98
frank_dunn1 52:922d8fdaae44 99 pc.printf("\r\n Mbed LoRaWANStack initialized \r\n");
mbed_official 0:7037ed05f54f 100
mbed_official 0:7037ed05f54f 101 // prepare application callbacks
mbed_official 0:7037ed05f54f 102 callbacks.events = mbed::callback(lora_event_handler);
mbed_official 2:dc95ac6d6d4e 103 lorawan.add_app_callbacks(&callbacks);
mbed_official 0:7037ed05f54f 104
mbed_official 0:7037ed05f54f 105 // Set number of retries in case of CONFIRMED messages
mbed_official 2:dc95ac6d6d4e 106 if (lorawan.set_confirmed_msg_retries(CONFIRMED_MSG_RETRY_COUNTER)
mbed_official 46:a124538e2891 107 != LORAWAN_STATUS_OK) {
frank_dunn1 52:922d8fdaae44 108 pc.printf("\r\n set_confirmed_msg_retries failed! \r\n\r\n");
mbed_official 0:7037ed05f54f 109 return -1;
mbed_official 0:7037ed05f54f 110 }
mbed_official 0:7037ed05f54f 111
mbed_official 0:7037ed05f54f 112 printf("\r\n CONFIRMED message retries : %d \r\n",
mbed_official 0:7037ed05f54f 113 CONFIRMED_MSG_RETRY_COUNTER);
mbed_official 0:7037ed05f54f 114
mbed_official 0:7037ed05f54f 115 // Enable adaptive data rate
mbed_official 2:dc95ac6d6d4e 116 if (lorawan.enable_adaptive_datarate() != LORAWAN_STATUS_OK) {
frank_dunn1 52:922d8fdaae44 117 pc.printf("\r\n enable_adaptive_datarate failed! \r\n");
mbed_official 0:7037ed05f54f 118 return -1;
mbed_official 0:7037ed05f54f 119 }
mbed_official 0:7037ed05f54f 120
frank_dunn1 52:922d8fdaae44 121 pc.printf("\r\n Adaptive data rate (ADR) - Enabled \r\n");
mbed_official 0:7037ed05f54f 122
mbed_official 2:dc95ac6d6d4e 123 retcode = lorawan.connect();
mbed_official 0:7037ed05f54f 124
mbed_official 0:7037ed05f54f 125 if (retcode == LORAWAN_STATUS_OK ||
mbed_official 46:a124538e2891 126 retcode == LORAWAN_STATUS_CONNECT_IN_PROGRESS) {
mbed_official 0:7037ed05f54f 127 } else {
frank_dunn1 52:922d8fdaae44 128 pc.printf("\r\n Connection error, code = %d \r\n", retcode);
mbed_official 0:7037ed05f54f 129 return -1;
mbed_official 0:7037ed05f54f 130 }
mbed_official 0:7037ed05f54f 131
mbed_official 0:7037ed05f54f 132 printf("\r\n Connection - In Progress ...\r\n");
mbed_official 0:7037ed05f54f 133
mbed_official 0:7037ed05f54f 134 // make your event queue dispatching events forever
mbed_official 0:7037ed05f54f 135 ev_queue.dispatch_forever();
mbed_official 3:8c7198d1a2a1 136
mbed_official 3:8c7198d1a2a1 137 return 0;
mbed_official 0:7037ed05f54f 138 }
mbed_official 0:7037ed05f54f 139
mbed_official 0:7037ed05f54f 140 /**
mbed_official 0:7037ed05f54f 141 * Sends a message to the Network Server
mbed_official 0:7037ed05f54f 142 */
mbed_official 0:7037ed05f54f 143 static void send_message()
mbed_official 0:7037ed05f54f 144 {
mbed_official 0:7037ed05f54f 145 uint16_t packet_len;
mbed_official 0:7037ed05f54f 146 int16_t retcode;
frank_dunn1 52:922d8fdaae44 147 pc.printf("\n\rHello world");
mbed_official 0:7037ed05f54f 148
marcozecchini 50:6e615eea1e6f 149 packet_len = sprintf((char *) tx_buffer, "Hello world");
mbed_official 0:7037ed05f54f 150
mbed_official 2:dc95ac6d6d4e 151 retcode = lorawan.send(MBED_CONF_LORA_APP_PORT, tx_buffer, packet_len,
mbed_official 47:b6d132f1079f 152 MSG_UNCONFIRMED_FLAG);
mbed_official 0:7037ed05f54f 153
mbed_official 0:7037ed05f54f 154 if (retcode < 0) {
frank_dunn1 52:922d8fdaae44 155 retcode == LORAWAN_STATUS_WOULD_BLOCK ? pc.printf("send - WOULD BLOCK\r\n")
frank_dunn1 52:922d8fdaae44 156 : pc.printf("\r\n send() - Error code %d \r\n", retcode);
mbed_official 26:f07f5febf97f 157
mbed_official 26:f07f5febf97f 158 if (retcode == LORAWAN_STATUS_WOULD_BLOCK) {
mbed_official 26:f07f5febf97f 159 //retry in 3 seconds
mbed_official 26:f07f5febf97f 160 if (MBED_CONF_LORA_DUTY_CYCLE_ON) {
mbed_official 26:f07f5febf97f 161 ev_queue.call_in(3000, send_message);
mbed_official 26:f07f5febf97f 162 }
mbed_official 26:f07f5febf97f 163 }
mbed_official 0:7037ed05f54f 164 return;
mbed_official 0:7037ed05f54f 165 }
mbed_official 0:7037ed05f54f 166
frank_dunn1 52:922d8fdaae44 167 pc.printf("\r\n %d bytes scheduled for transmission \r\n", retcode);
mbed_official 12:5015dfead3f2 168 memset(tx_buffer, 0, sizeof(tx_buffer));
mbed_official 0:7037ed05f54f 169 }
mbed_official 0:7037ed05f54f 170
mbed_official 0:7037ed05f54f 171 /**
mbed_official 0:7037ed05f54f 172 * Event handler
mbed_official 0:7037ed05f54f 173 */
mbed_official 0:7037ed05f54f 174 static void lora_event_handler(lorawan_event_t event)
mbed_official 0:7037ed05f54f 175 {
mbed_official 0:7037ed05f54f 176 switch (event) {
mbed_official 0:7037ed05f54f 177 case CONNECTED:
mbed_official 0:7037ed05f54f 178 printf("\r\n Connection - Successful \r\n");
mbed_official 0:7037ed05f54f 179 if (MBED_CONF_LORA_DUTY_CYCLE_ON) {
mbed_official 0:7037ed05f54f 180 send_message();
mbed_official 0:7037ed05f54f 181 } else {
mbed_official 0:7037ed05f54f 182 ev_queue.call_every(TX_TIMER, send_message);
mbed_official 0:7037ed05f54f 183 }
mbed_official 0:7037ed05f54f 184
mbed_official 0:7037ed05f54f 185 break;
mbed_official 0:7037ed05f54f 186 case DISCONNECTED:
mbed_official 0:7037ed05f54f 187 ev_queue.break_dispatch();
mbed_official 0:7037ed05f54f 188 printf("\r\n Disconnected Successfully \r\n");
mbed_official 0:7037ed05f54f 189 break;
mbed_official 0:7037ed05f54f 190 case TX_DONE:
mbed_official 0:7037ed05f54f 191 printf("\r\n Message Sent to Network Server \r\n");
mbed_official 0:7037ed05f54f 192 if (MBED_CONF_LORA_DUTY_CYCLE_ON) {
mbed_official 0:7037ed05f54f 193 send_message();
mbed_official 0:7037ed05f54f 194 }
mbed_official 0:7037ed05f54f 195 break;
mbed_official 0:7037ed05f54f 196 case TX_TIMEOUT:
mbed_official 0:7037ed05f54f 197 case TX_ERROR:
mbed_official 0:7037ed05f54f 198 case TX_CRYPTO_ERROR:
mbed_official 0:7037ed05f54f 199 case TX_SCHEDULING_ERROR:
mbed_official 0:7037ed05f54f 200 printf("\r\n Transmission Error - EventCode = %d \r\n", event);
mbed_official 0:7037ed05f54f 201 // try again
mbed_official 0:7037ed05f54f 202 if (MBED_CONF_LORA_DUTY_CYCLE_ON) {
mbed_official 0:7037ed05f54f 203 send_message();
mbed_official 0:7037ed05f54f 204 }
mbed_official 0:7037ed05f54f 205 break;
mbed_official 0:7037ed05f54f 206 case RX_DONE:
mbed_official 0:7037ed05f54f 207 printf("\r\n Received message from Network Server \r\n");
mbed_official 0:7037ed05f54f 208 break;
mbed_official 0:7037ed05f54f 209 case RX_TIMEOUT:
mbed_official 0:7037ed05f54f 210 case RX_ERROR:
mbed_official 0:7037ed05f54f 211 printf("\r\n Error in reception - Code = %d \r\n", event);
mbed_official 0:7037ed05f54f 212 break;
mbed_official 0:7037ed05f54f 213 case JOIN_FAILURE:
mbed_official 0:7037ed05f54f 214 printf("\r\n OTAA Failed - Check Keys \r\n");
mbed_official 0:7037ed05f54f 215 break;
mbed_official 26:f07f5febf97f 216 case UPLINK_REQUIRED:
mbed_official 26:f07f5febf97f 217 printf("\r\n Uplink required by NS \r\n");
mbed_official 26:f07f5febf97f 218 if (MBED_CONF_LORA_DUTY_CYCLE_ON) {
mbed_official 26:f07f5febf97f 219 send_message();
mbed_official 26:f07f5febf97f 220 }
mbed_official 26:f07f5febf97f 221 break;
mbed_official 0:7037ed05f54f 222 default:
mbed_official 0:7037ed05f54f 223 MBED_ASSERT("Unknown Event");
mbed_official 0:7037ed05f54f 224 }
mbed_official 0:7037ed05f54f 225 }
mbed_official 0:7037ed05f54f 226
mbed_official 0:7037ed05f54f 227 // EOF