BISITE Firmware / Mbed OS LoRaWAN_BMP280_End_Node

B-L072 ST Board BMP280 LoRaWAN end node

Dependencies:   BME280

Temperature/Pressure LoRaWAN End Node

main.cpp@63:7b4427c6bded, 2020-10-05 (annotated)

Committer:
jorgehsmp
Date:
Mon Oct 05 15:32:48 2020 +0000
Revision:
63:7b4427c6bded
Parent:
62:078d66d985f8 
BMP280 LoRaWAN Node

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 0:7037ed05f54f 1 #include <stdio.h>
saranjay 61:d220d51ae9d8 2 #include "BME280.h"
mbed_official 3:8c7198d1a2a1 3
mbed_official 0:7037ed05f54f 4 #include "lorawan/LoRaWANInterface.h"
mbed_official 0:7037ed05f54f 5 #include "lorawan/system/lorawan_data_structures.h"
mbed_official 0:7037ed05f54f 6 #include "events/EventQueue.h"
mbed_official 0:7037ed05f54f 7
mbed_official 0:7037ed05f54f 8 #include "lora_radio_helper.h"
mbed_official 0:7037ed05f54f 9
mbed_official 0:7037ed05f54f 10 using namespace events;
mbed_official 0:7037ed05f54f 11
mbed_official 0:7037ed05f54f 12 /*
mbed_official 0:7037ed05f54f 13 * Sets up an application dependent transmission timer in ms. Used only when Duty Cycling is off for testing
mbed_official 0:7037ed05f54f 14 */
mbed_official 0:7037ed05f54f 15 #define TX_TIMER 10000
mbed_official 0:7037ed05f54f 16
mbed_official 0:7037ed05f54f 17 /**
mbed_official 0:7037ed05f54f 18 * Maximum number of events for the event queue.
mbed_official 12:5015dfead3f2 19 * 10 is the safe number for the stack events, however, if application
mbed_official 0:7037ed05f54f 20 * also uses the queue for whatever purposes, this number should be increased.
mbed_official 0:7037ed05f54f 21 */
mbed_official 12:5015dfead3f2 22 #define MAX_NUMBER_OF_EVENTS 10
mbed_official 0:7037ed05f54f 23
mbed_official 0:7037ed05f54f 24 /**
mbed_official 0:7037ed05f54f 25 * Maximum number of retries for CONFIRMED messages before giving up
mbed_official 0:7037ed05f54f 26 */
mbed_official 0:7037ed05f54f 27 #define CONFIRMED_MSG_RETRY_COUNTER 3
mbed_official 0:7037ed05f54f 28
saranjay 61:d220d51ae9d8 29 #define DEBUG 1
jorgehsmp 63:7b4427c6bded 30 #define BUFFER_SIZE 8
mbed_official 0:7037ed05f54f 31
saranjay 62:078d66d985f8 32
saranjay 62:078d66d985f8 33 // Max payload size can be LORAMAC_PHY_MAXPAYLOAD.
saranjay 62:078d66d985f8 34 // Use set_max_payload_length() function to change maximum payload capacity.
saranjay 62:078d66d985f8 35
saranjay 62:078d66d985f8 36 uint8_t tx_buffer[BUFFER_SIZE];
saranjay 62:078d66d985f8 37
saranjay 61:d220d51ae9d8 38 BME280 sensor(PB_9, PB_8, 0x77);
mbed_official 0:7037ed05f54f 39
saranjay 62:078d66d985f8 40 uint16_t packet_len = BUFFER_SIZE;
jorgehsmp 63:7b4427c6bded 41 float sensor_values[2];
saranjay 62:078d66d985f8 42
saranjay 62:078d66d985f8 43
mbed_official 0:7037ed05f54f 44 /**
mbed_official 0:7037ed05f54f 45 * This event queue is the global event queue for both the
mbed_official 0:7037ed05f54f 46 * application and stack. To conserve memory, the stack is designed to run
mbed_official 0:7037ed05f54f 47 * in the same thread as the application and the application is responsible for
mbed_official 0:7037ed05f54f 48 * providing an event queue to the stack that will be used for ISR deferment as
mbed_official 0:7037ed05f54f 49 * well as application information event queuing.
mbed_official 0:7037ed05f54f 50 */
saranjay 62:078d66d985f8 51
mbed_official 46:a124538e2891 52 static EventQueue ev_queue(MAX_NUMBER_OF_EVENTS *EVENTS_EVENT_SIZE);
mbed_official 0:7037ed05f54f 53
mbed_official 0:7037ed05f54f 54 /**
mbed_official 0:7037ed05f54f 55 * Event handler.
mbed_official 0:7037ed05f54f 56 *
mbed_official 0:7037ed05f54f 57 * This will be passed to the LoRaWAN stack to queue events for the
mbed_official 0:7037ed05f54f 58 * application which in turn drive the application.
mbed_official 0:7037ed05f54f 59 */
mbed_official 0:7037ed05f54f 60 static void lora_event_handler(lorawan_event_t event);
mbed_official 0:7037ed05f54f 61
mbed_official 0:7037ed05f54f 62 /**
mbed_official 46:a124538e2891 63 * Constructing Mbed LoRaWANInterface and passing it the radio object from lora_radio_helper.
mbed_official 0:7037ed05f54f 64 */
mbed_official 2:dc95ac6d6d4e 65 static LoRaWANInterface lorawan(radio);
mbed_official 0:7037ed05f54f 66
mbed_official 0:7037ed05f54f 67 /**
mbed_official 0:7037ed05f54f 68 * Application specific callbacks
mbed_official 0:7037ed05f54f 69 */
mbed_official 0:7037ed05f54f 70 static lorawan_app_callbacks_t callbacks;
saranjay 60:ff7a31e79593 71 static void send_message();
mbed_official 0:7037ed05f54f 72
saranjay 62:078d66d985f8 73
mbed_official 46:a124538e2891 74 int main(void)
mbed_official 0:7037ed05f54f 75 {
mbed_official 0:7037ed05f54f 76
mbed_official 0:7037ed05f54f 77 // stores the status of a call to LoRaWAN protocol
mbed_official 0:7037ed05f54f 78 lorawan_status_t retcode;
mbed_official 0:7037ed05f54f 79
mbed_official 0:7037ed05f54f 80 // Initialize LoRaWAN stack
mbed_official 2:dc95ac6d6d4e 81 if (lorawan.initialize(&ev_queue) != LORAWAN_STATUS_OK) {
saranjay 61:d220d51ae9d8 82 if(DEBUG)
saranjay 61:d220d51ae9d8 83 printf("\r\n LoRa initialization failed! \r\n");
mbed_official 0:7037ed05f54f 84 return -1;
mbed_official 0:7037ed05f54f 85 }
mbed_official 0:7037ed05f54f 86
saranjay 61:d220d51ae9d8 87 if(DEBUG)
saranjay 61:d220d51ae9d8 88 printf("\r\n Mbed LoRaWANStack initialized \r\n");
mbed_official 0:7037ed05f54f 89
mbed_official 0:7037ed05f54f 90 // prepare application callbacks
mbed_official 0:7037ed05f54f 91 callbacks.events = mbed::callback(lora_event_handler);
mbed_official 2:dc95ac6d6d4e 92 lorawan.add_app_callbacks(&callbacks);
mbed_official 0:7037ed05f54f 93
mbed_official 0:7037ed05f54f 94 // Set number of retries in case of CONFIRMED messages
mbed_official 2:dc95ac6d6d4e 95 if (lorawan.set_confirmed_msg_retries(CONFIRMED_MSG_RETRY_COUNTER)
mbed_official 46:a124538e2891 96 != LORAWAN_STATUS_OK) {
saranjay 61:d220d51ae9d8 97 if(DEBUG)
saranjay 61:d220d51ae9d8 98 printf("\r\n set_confirmed_msg_retries failed! \r\n\r\n");
mbed_official 0:7037ed05f54f 99 return -1;
mbed_official 0:7037ed05f54f 100 }
mbed_official 0:7037ed05f54f 101
saranjay 61:d220d51ae9d8 102 if(DEBUG)
saranjay 61:d220d51ae9d8 103 printf("\r\n CONFIRMED message retries : %d \r\n", CONFIRMED_MSG_RETRY_COUNTER);
mbed_official 0:7037ed05f54f 104
mbed_official 0:7037ed05f54f 105 // Enable adaptive data rate
mbed_official 2:dc95ac6d6d4e 106 if (lorawan.enable_adaptive_datarate() != LORAWAN_STATUS_OK) {
saranjay 61:d220d51ae9d8 107 if(DEBUG)
saranjay 61:d220d51ae9d8 108 printf("\r\n enable_adaptive_datarate failed! \r\n");
mbed_official 0:7037ed05f54f 109 return -1;
mbed_official 0:7037ed05f54f 110 }
mbed_official 0:7037ed05f54f 111
saranjay 61:d220d51ae9d8 112 if(DEBUG)
saranjay 61:d220d51ae9d8 113 printf("\r\n Adaptive data rate (ADR) - Enabled \r\n");
mbed_official 0:7037ed05f54f 114
mbed_official 2:dc95ac6d6d4e 115 retcode = lorawan.connect();
mbed_official 0:7037ed05f54f 116
saranjay 61:d220d51ae9d8 117 if (retcode == LORAWAN_STATUS_OK || retcode == LORAWAN_STATUS_CONNECT_IN_PROGRESS) {
mbed_official 0:7037ed05f54f 118 } else {
saranjay 61:d220d51ae9d8 119 if(DEBUG)
saranjay 61:d220d51ae9d8 120 printf("\r\n Connection error, code = %d \r\n", retcode);
mbed_official 0:7037ed05f54f 121 return -1;
mbed_official 0:7037ed05f54f 122 }
mbed_official 0:7037ed05f54f 123
saranjay 61:d220d51ae9d8 124 if(DEBUG)
saranjay 61:d220d51ae9d8 125 printf("\r\n Connection - In Progress ...\r\n");
mbed_official 0:7037ed05f54f 126
saranjay 62:078d66d985f8 127
mbed_official 0:7037ed05f54f 128 // make your event queue dispatching events forever
mbed_official 0:7037ed05f54f 129 ev_queue.dispatch_forever();
saranjay 60:ff7a31e79593 130
mbed_official 3:8c7198d1a2a1 131 return 0;
mbed_official 0:7037ed05f54f 132 }
mbed_official 0:7037ed05f54f 133
mbed_official 0:7037ed05f54f 134 /**
mbed_official 0:7037ed05f54f 135 * Sends a message to the Network Server
mbed_official 0:7037ed05f54f 136 */
mbed_official 0:7037ed05f54f 137 static void send_message()
mbed_official 0:7037ed05f54f 138 {
mbed_official 0:7037ed05f54f 139 int16_t retcode;
saranjay 61:d220d51ae9d8 140
saranjay 61:d220d51ae9d8 141 sensor.trigger();
saranjay 61:d220d51ae9d8 142 sensor_values[0] = sensor.getTemperature();
saranjay 61:d220d51ae9d8 143 sensor_values[1] = sensor.getPressure();
jorgehsmp 63:7b4427c6bded 144 //sensor_values[2] = sensor.getHumidity();
mbed_official 0:7037ed05f54f 145
saranjay 61:d220d51ae9d8 146 memcpy(tx_buffer, sensor_values, packet_len);
saranjay 61:d220d51ae9d8 147
saranjay 61:d220d51ae9d8 148 retcode = lorawan.send(MBED_CONF_LORA_APP_PORT, tx_buffer, packet_len, MSG_UNCONFIRMED_FLAG);
mbed_official 0:7037ed05f54f 149
mbed_official 0:7037ed05f54f 150 if (retcode < 0) {
saranjay 61:d220d51ae9d8 151
saranjay 61:d220d51ae9d8 152 if(DEBUG)
saranjay 61:d220d51ae9d8 153 retcode == LORAWAN_STATUS_WOULD_BLOCK ? printf("send - WOULD BLOCK\r\n")
saranjay 61:d220d51ae9d8 154 : printf("\r\n send() - Error code %d \r\n", retcode);
mbed_official 26:f07f5febf97f 155
mbed_official 26:f07f5febf97f 156 if (retcode == LORAWAN_STATUS_WOULD_BLOCK) {
mbed_official 26:f07f5febf97f 157 //retry in 3 seconds
mbed_official 26:f07f5febf97f 158 if (MBED_CONF_LORA_DUTY_CYCLE_ON) {
mbed_official 26:f07f5febf97f 159 ev_queue.call_in(3000, send_message);
mbed_official 26:f07f5febf97f 160 }
mbed_official 26:f07f5febf97f 161 }
mbed_official 0:7037ed05f54f 162 return;
mbed_official 0:7037ed05f54f 163 }
mbed_official 0:7037ed05f54f 164
saranjay 61:d220d51ae9d8 165 if(DEBUG)
jorgehsmp 63:7b4427c6bded 166 printf("\r\n Temp: %f \r\n", sensor_values[0]);
jorgehsmp 63:7b4427c6bded 167 printf("\r\n Pressure: %f \r\n", sensor_values[1]);
jorgehsmp 63:7b4427c6bded 168 printf("\r\n txBuffer: %.2X %.2X %.2X %.2X %.2X %.2X %.2X %.2X \r\n", tx_buffer[0], tx_buffer[1], tx_buffer[2], tx_buffer[3], tx_buffer[4], tx_buffer[5], tx_buffer[6], tx_buffer[7]);
saranjay 61:d220d51ae9d8 169 printf("\r\n %d bytes scheduled for transmission \r\n", retcode);
saranjay 62:078d66d985f8 170
saranjay 62:078d66d985f8 171 //Check if radio wakes up automatically. If not, then call radio.TX();
saranjay 62:078d66d985f8 172 radio.sleep();
mbed_official 0:7037ed05f54f 173 }
mbed_official 0:7037ed05f54f 174
mbed_official 0:7037ed05f54f 175 /**
mbed_official 0:7037ed05f54f 176 * Receive a message from the Network Server
mbed_official 0:7037ed05f54f 177 */
mbed_official 0:7037ed05f54f 178 static void receive_message()
mbed_official 0:7037ed05f54f 179 {
mbed_official 47:b6d132f1079f 180
mbed_official 0:7037ed05f54f 181 }
mbed_official 0:7037ed05f54f 182
mbed_official 0:7037ed05f54f 183 /**
mbed_official 0:7037ed05f54f 184 * Event handler
mbed_official 0:7037ed05f54f 185 */
mbed_official 0:7037ed05f54f 186 static void lora_event_handler(lorawan_event_t event)
mbed_official 0:7037ed05f54f 187 {
mbed_official 0:7037ed05f54f 188 switch (event) {
mbed_official 0:7037ed05f54f 189 case CONNECTED:
saranjay 61:d220d51ae9d8 190 if(DEBUG)
saranjay 61:d220d51ae9d8 191 printf("\r\n Connection - Successful \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 } else {
mbed_official 0:7037ed05f54f 195 ev_queue.call_every(TX_TIMER, send_message);
mbed_official 0:7037ed05f54f 196 }
mbed_official 0:7037ed05f54f 197
mbed_official 0:7037ed05f54f 198 break;
mbed_official 0:7037ed05f54f 199 case DISCONNECTED:
mbed_official 0:7037ed05f54f 200 ev_queue.break_dispatch();
saranjay 61:d220d51ae9d8 201 if(DEBUG)
saranjay 61:d220d51ae9d8 202 printf("\r\n Disconnected Successfully \r\n");
mbed_official 0:7037ed05f54f 203 break;
mbed_official 0:7037ed05f54f 204 case TX_DONE:
saranjay 61:d220d51ae9d8 205 if(DEBUG)
saranjay 61:d220d51ae9d8 206 printf("\r\n Message Sent to Network Server \r\n");
mbed_official 0:7037ed05f54f 207 if (MBED_CONF_LORA_DUTY_CYCLE_ON) {
mbed_official 0:7037ed05f54f 208 send_message();
mbed_official 0:7037ed05f54f 209 }
mbed_official 0:7037ed05f54f 210 break;
mbed_official 0:7037ed05f54f 211 case TX_TIMEOUT:
mbed_official 0:7037ed05f54f 212 case TX_ERROR:
mbed_official 0:7037ed05f54f 213 case TX_CRYPTO_ERROR:
mbed_official 0:7037ed05f54f 214 case TX_SCHEDULING_ERROR:
saranjay 61:d220d51ae9d8 215 if(DEBUG)
saranjay 61:d220d51ae9d8 216 printf("\r\n Transmission Error - EventCode = %d \r\n", event);
mbed_official 0:7037ed05f54f 217 // try again
mbed_official 0:7037ed05f54f 218 if (MBED_CONF_LORA_DUTY_CYCLE_ON) {
mbed_official 0:7037ed05f54f 219 send_message();
mbed_official 0:7037ed05f54f 220 }
mbed_official 0:7037ed05f54f 221 break;
mbed_official 0:7037ed05f54f 222 case RX_DONE:
saranjay 61:d220d51ae9d8 223 if(DEBUG)
saranjay 61:d220d51ae9d8 224 printf("\r\n Received message from Network Server \r\n");
mbed_official 0:7037ed05f54f 225 receive_message();
mbed_official 0:7037ed05f54f 226 break;
mbed_official 0:7037ed05f54f 227 case RX_TIMEOUT:
mbed_official 0:7037ed05f54f 228 case RX_ERROR:
saranjay 61:d220d51ae9d8 229 if(DEBUG)
saranjay 61:d220d51ae9d8 230 printf("\r\n Error in reception - Code = %d \r\n", event);
mbed_official 0:7037ed05f54f 231 break;
mbed_official 0:7037ed05f54f 232 case JOIN_FAILURE:
saranjay 61:d220d51ae9d8 233 if(DEBUG)
saranjay 61:d220d51ae9d8 234 printf("\r\n OTAA Failed - Check Keys \r\n");
mbed_official 0:7037ed05f54f 235 break;
mbed_official 26:f07f5febf97f 236 case UPLINK_REQUIRED:
saranjay 61:d220d51ae9d8 237 if(DEBUG)
saranjay 61:d220d51ae9d8 238 printf("\r\n Uplink required by NS \r\n");
mbed_official 26:f07f5febf97f 239 if (MBED_CONF_LORA_DUTY_CYCLE_ON) {
mbed_official 26:f07f5febf97f 240 send_message();
mbed_official 26:f07f5febf97f 241 }
mbed_official 26:f07f5febf97f 242 break;
mbed_official 0:7037ed05f54f 243 default:
mbed_official 0:7037ed05f54f 244 MBED_ASSERT("Unknown Event");
mbed_official 0:7037ed05f54f 245 }
mbed_official 0:7037ed05f54f 246 }
mbed_official 0:7037ed05f54f 247
mbed_official 0:7037ed05f54f 248 // EOF