B-L072 ST Board BMP280 LoRaWAN end node
Dependencies: BME280
Temperature/Pressure LoRaWAN End Node
main.cpp@61:d220d51ae9d8, 2020-07-25 (annotated)
- Committer:
- saranjay
- Date:
- Sat Jul 25 06:40:08 2020 +0000
- Revision:
- 61:d220d51ae9d8
- Parent:
- 60:ff7a31e79593
- Child:
- 62:078d66d985f8
end node.
Who changed what in which revision?
User | Revision | Line number | New 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 | |
saranjay | 61:d220d51ae9d8 | 8 | //#include "trace_helper.h" |
mbed_official | 0:7037ed05f54f | 9 | #include "lora_radio_helper.h" |
mbed_official | 0:7037ed05f54f | 10 | |
mbed_official | 0:7037ed05f54f | 11 | using namespace events; |
mbed_official | 0:7037ed05f54f | 12 | |
mbed_official | 12:5015dfead3f2 | 13 | // Max payload size can be LORAMAC_PHY_MAXPAYLOAD. |
mbed_official | 12:5015dfead3f2 | 14 | // This example only communicates with much shorter messages (<30 bytes). |
mbed_official | 12:5015dfead3f2 | 15 | // If longer messages are used, these buffers must be changed accordingly. |
saranjay | 61:d220d51ae9d8 | 16 | //uint8_t tx_buffer[30]; |
saranjay | 61:d220d51ae9d8 | 17 | uint8_t tx_buffer[12]; |
mbed_official | 12:5015dfead3f2 | 18 | uint8_t rx_buffer[30]; |
mbed_official | 0:7037ed05f54f | 19 | |
mbed_official | 0:7037ed05f54f | 20 | /* |
mbed_official | 0:7037ed05f54f | 21 | * Sets up an application dependent transmission timer in ms. Used only when Duty Cycling is off for testing |
mbed_official | 0:7037ed05f54f | 22 | */ |
mbed_official | 0:7037ed05f54f | 23 | #define TX_TIMER 10000 |
mbed_official | 0:7037ed05f54f | 24 | |
mbed_official | 0:7037ed05f54f | 25 | /** |
mbed_official | 0:7037ed05f54f | 26 | * Maximum number of events for the event queue. |
mbed_official | 12:5015dfead3f2 | 27 | * 10 is the safe number for the stack events, however, if application |
mbed_official | 0:7037ed05f54f | 28 | * also uses the queue for whatever purposes, this number should be increased. |
mbed_official | 0:7037ed05f54f | 29 | */ |
mbed_official | 12:5015dfead3f2 | 30 | #define MAX_NUMBER_OF_EVENTS 10 |
mbed_official | 0:7037ed05f54f | 31 | |
mbed_official | 0:7037ed05f54f | 32 | /** |
mbed_official | 0:7037ed05f54f | 33 | * Maximum number of retries for CONFIRMED messages before giving up |
mbed_official | 0:7037ed05f54f | 34 | */ |
mbed_official | 0:7037ed05f54f | 35 | #define CONFIRMED_MSG_RETRY_COUNTER 3 |
mbed_official | 0:7037ed05f54f | 36 | |
saranjay | 61:d220d51ae9d8 | 37 | #define DEBUG 1 |
saranjay | 61:d220d51ae9d8 | 38 | #define BUFFER_SIZE 12 |
mbed_official | 0:7037ed05f54f | 39 | |
saranjay | 61:d220d51ae9d8 | 40 | BME280 sensor(PB_9, PB_8, 0x77); |
mbed_official | 0:7037ed05f54f | 41 | |
mbed_official | 0:7037ed05f54f | 42 | /** |
mbed_official | 0:7037ed05f54f | 43 | * This event queue is the global event queue for both the |
mbed_official | 0:7037ed05f54f | 44 | * application and stack. To conserve memory, the stack is designed to run |
mbed_official | 0:7037ed05f54f | 45 | * in the same thread as the application and the application is responsible for |
mbed_official | 0:7037ed05f54f | 46 | * providing an event queue to the stack that will be used for ISR deferment as |
mbed_official | 0:7037ed05f54f | 47 | * well as application information event queuing. |
mbed_official | 0:7037ed05f54f | 48 | */ |
mbed_official | 46:a124538e2891 | 49 | static EventQueue ev_queue(MAX_NUMBER_OF_EVENTS *EVENTS_EVENT_SIZE); |
mbed_official | 0:7037ed05f54f | 50 | |
mbed_official | 0:7037ed05f54f | 51 | /** |
mbed_official | 0:7037ed05f54f | 52 | * Event handler. |
mbed_official | 0:7037ed05f54f | 53 | * |
mbed_official | 0:7037ed05f54f | 54 | * This will be passed to the LoRaWAN stack to queue events for the |
mbed_official | 0:7037ed05f54f | 55 | * application which in turn drive the application. |
mbed_official | 0:7037ed05f54f | 56 | */ |
mbed_official | 0:7037ed05f54f | 57 | static void lora_event_handler(lorawan_event_t event); |
mbed_official | 0:7037ed05f54f | 58 | |
mbed_official | 0:7037ed05f54f | 59 | /** |
mbed_official | 46:a124538e2891 | 60 | * Constructing Mbed LoRaWANInterface and passing it the radio object from lora_radio_helper. |
mbed_official | 0:7037ed05f54f | 61 | */ |
mbed_official | 2:dc95ac6d6d4e | 62 | static LoRaWANInterface lorawan(radio); |
mbed_official | 0:7037ed05f54f | 63 | |
mbed_official | 0:7037ed05f54f | 64 | /** |
mbed_official | 0:7037ed05f54f | 65 | * Application specific callbacks |
mbed_official | 0:7037ed05f54f | 66 | */ |
mbed_official | 0:7037ed05f54f | 67 | static lorawan_app_callbacks_t callbacks; |
saranjay | 60:ff7a31e79593 | 68 | static void send_message(); |
mbed_official | 0:7037ed05f54f | 69 | |
mbed_official | 0:7037ed05f54f | 70 | /** |
mbed_official | 0:7037ed05f54f | 71 | * Entry point for application |
mbed_official | 0:7037ed05f54f | 72 | */ |
mbed_official | 46:a124538e2891 | 73 | int main(void) |
mbed_official | 0:7037ed05f54f | 74 | { |
mbed_official | 0:7037ed05f54f | 75 | // setup tracing |
saranjay | 61:d220d51ae9d8 | 76 | //setup_trace(); |
mbed_official | 0:7037ed05f54f | 77 | |
mbed_official | 0:7037ed05f54f | 78 | // stores the status of a call to LoRaWAN protocol |
mbed_official | 0:7037ed05f54f | 79 | lorawan_status_t retcode; |
mbed_official | 0:7037ed05f54f | 80 | |
mbed_official | 0:7037ed05f54f | 81 | // Initialize LoRaWAN stack |
mbed_official | 2:dc95ac6d6d4e | 82 | if (lorawan.initialize(&ev_queue) != LORAWAN_STATUS_OK) { |
saranjay | 61:d220d51ae9d8 | 83 | if(DEBUG) |
saranjay | 61:d220d51ae9d8 | 84 | printf("\r\n LoRa initialization failed! \r\n"); |
mbed_official | 0:7037ed05f54f | 85 | return -1; |
mbed_official | 0:7037ed05f54f | 86 | } |
mbed_official | 0:7037ed05f54f | 87 | |
saranjay | 61:d220d51ae9d8 | 88 | if(DEBUG) |
saranjay | 61:d220d51ae9d8 | 89 | printf("\r\n Mbed LoRaWANStack initialized \r\n"); |
mbed_official | 0:7037ed05f54f | 90 | |
mbed_official | 0:7037ed05f54f | 91 | // prepare application callbacks |
mbed_official | 0:7037ed05f54f | 92 | callbacks.events = mbed::callback(lora_event_handler); |
mbed_official | 2:dc95ac6d6d4e | 93 | lorawan.add_app_callbacks(&callbacks); |
mbed_official | 0:7037ed05f54f | 94 | |
mbed_official | 0:7037ed05f54f | 95 | // Set number of retries in case of CONFIRMED messages |
mbed_official | 2:dc95ac6d6d4e | 96 | if (lorawan.set_confirmed_msg_retries(CONFIRMED_MSG_RETRY_COUNTER) |
mbed_official | 46:a124538e2891 | 97 | != LORAWAN_STATUS_OK) { |
saranjay | 61:d220d51ae9d8 | 98 | if(DEBUG) |
saranjay | 61:d220d51ae9d8 | 99 | printf("\r\n set_confirmed_msg_retries failed! \r\n\r\n"); |
mbed_official | 0:7037ed05f54f | 100 | return -1; |
mbed_official | 0:7037ed05f54f | 101 | } |
mbed_official | 0:7037ed05f54f | 102 | |
saranjay | 61:d220d51ae9d8 | 103 | if(DEBUG) |
saranjay | 61:d220d51ae9d8 | 104 | printf("\r\n CONFIRMED message retries : %d \r\n", CONFIRMED_MSG_RETRY_COUNTER); |
mbed_official | 0:7037ed05f54f | 105 | |
mbed_official | 0:7037ed05f54f | 106 | // Enable adaptive data rate |
mbed_official | 2:dc95ac6d6d4e | 107 | if (lorawan.enable_adaptive_datarate() != LORAWAN_STATUS_OK) { |
saranjay | 61:d220d51ae9d8 | 108 | if(DEBUG) |
saranjay | 61:d220d51ae9d8 | 109 | printf("\r\n enable_adaptive_datarate failed! \r\n"); |
mbed_official | 0:7037ed05f54f | 110 | return -1; |
mbed_official | 0:7037ed05f54f | 111 | } |
mbed_official | 0:7037ed05f54f | 112 | |
saranjay | 61:d220d51ae9d8 | 113 | if(DEBUG) |
saranjay | 61:d220d51ae9d8 | 114 | printf("\r\n Adaptive data rate (ADR) - Enabled \r\n"); |
mbed_official | 0:7037ed05f54f | 115 | |
mbed_official | 2:dc95ac6d6d4e | 116 | retcode = lorawan.connect(); |
mbed_official | 0:7037ed05f54f | 117 | |
saranjay | 61:d220d51ae9d8 | 118 | if (retcode == LORAWAN_STATUS_OK || retcode == LORAWAN_STATUS_CONNECT_IN_PROGRESS) { |
mbed_official | 0:7037ed05f54f | 119 | } else { |
saranjay | 61:d220d51ae9d8 | 120 | if(DEBUG) |
saranjay | 61:d220d51ae9d8 | 121 | printf("\r\n Connection error, code = %d \r\n", retcode); |
mbed_official | 0:7037ed05f54f | 122 | return -1; |
mbed_official | 0:7037ed05f54f | 123 | } |
mbed_official | 0:7037ed05f54f | 124 | |
saranjay | 61:d220d51ae9d8 | 125 | if(DEBUG) |
saranjay | 61:d220d51ae9d8 | 126 | printf("\r\n Connection - In Progress ...\r\n"); |
mbed_official | 0:7037ed05f54f | 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 | { |
saranjay | 61:d220d51ae9d8 | 139 | uint16_t packet_len = BUFFER_SIZE; |
mbed_official | 0:7037ed05f54f | 140 | int16_t retcode; |
saranjay | 61:d220d51ae9d8 | 141 | float sensor_values[3]; |
saranjay | 61:d220d51ae9d8 | 142 | |
saranjay | 61:d220d51ae9d8 | 143 | sensor.trigger(); |
saranjay | 61:d220d51ae9d8 | 144 | sensor_values[0] = sensor.getTemperature(); |
saranjay | 61:d220d51ae9d8 | 145 | sensor_values[1] = sensor.getPressure(); |
saranjay | 61:d220d51ae9d8 | 146 | sensor_values[2] = sensor.getHumidity(); |
mbed_official | 0:7037ed05f54f | 147 | |
saranjay | 61:d220d51ae9d8 | 148 | memcpy(tx_buffer, sensor_values, packet_len); |
saranjay | 61:d220d51ae9d8 | 149 | |
saranjay | 61:d220d51ae9d8 | 150 | //packet_len = sprintf((char *) tx_buffer, "Dummy Sensor Value is"); |
mbed_official | 0:7037ed05f54f | 151 | |
saranjay | 61:d220d51ae9d8 | 152 | //retcode = lorawan.send(MBED_CONF_LORA_APP_PORT, tx_buffer, packet_len, MSG_UNCONFIRMED_FLAG); |
saranjay | 61:d220d51ae9d8 | 153 | |
saranjay | 61:d220d51ae9d8 | 154 | retcode = lorawan.send(MBED_CONF_LORA_APP_PORT, tx_buffer, packet_len, MSG_UNCONFIRMED_FLAG); |
mbed_official | 0:7037ed05f54f | 155 | |
mbed_official | 0:7037ed05f54f | 156 | if (retcode < 0) { |
saranjay | 61:d220d51ae9d8 | 157 | |
saranjay | 61:d220d51ae9d8 | 158 | if(DEBUG) |
saranjay | 61:d220d51ae9d8 | 159 | retcode == LORAWAN_STATUS_WOULD_BLOCK ? printf("send - WOULD BLOCK\r\n") |
saranjay | 61:d220d51ae9d8 | 160 | : printf("\r\n send() - Error code %d \r\n", retcode); |
mbed_official | 26:f07f5febf97f | 161 | |
mbed_official | 26:f07f5febf97f | 162 | if (retcode == LORAWAN_STATUS_WOULD_BLOCK) { |
mbed_official | 26:f07f5febf97f | 163 | //retry in 3 seconds |
mbed_official | 26:f07f5febf97f | 164 | if (MBED_CONF_LORA_DUTY_CYCLE_ON) { |
mbed_official | 26:f07f5febf97f | 165 | ev_queue.call_in(3000, send_message); |
mbed_official | 26:f07f5febf97f | 166 | } |
mbed_official | 26:f07f5febf97f | 167 | } |
mbed_official | 0:7037ed05f54f | 168 | return; |
mbed_official | 0:7037ed05f54f | 169 | } |
mbed_official | 0:7037ed05f54f | 170 | |
saranjay | 61:d220d51ae9d8 | 171 | if(DEBUG) |
saranjay | 61:d220d51ae9d8 | 172 | printf("\r\n %d bytes scheduled for transmission \r\n", retcode); |
saranjay | 61:d220d51ae9d8 | 173 | //memset(tx_buffer, 0, sizeof(tx_buffer)); |
mbed_official | 0:7037ed05f54f | 174 | } |
mbed_official | 0:7037ed05f54f | 175 | |
mbed_official | 0:7037ed05f54f | 176 | /** |
mbed_official | 0:7037ed05f54f | 177 | * Receive a message from the Network Server |
mbed_official | 0:7037ed05f54f | 178 | */ |
mbed_official | 0:7037ed05f54f | 179 | static void receive_message() |
mbed_official | 0:7037ed05f54f | 180 | { |
mbed_official | 47:b6d132f1079f | 181 | uint8_t port; |
mbed_official | 47:b6d132f1079f | 182 | int flags; |
mbed_official | 47:b6d132f1079f | 183 | int16_t retcode = lorawan.receive(rx_buffer, sizeof(rx_buffer), port, flags); |
mbed_official | 0:7037ed05f54f | 184 | |
mbed_official | 0:7037ed05f54f | 185 | if (retcode < 0) { |
mbed_official | 0:7037ed05f54f | 186 | printf("\r\n receive() - Error code %d \r\n", retcode); |
mbed_official | 0:7037ed05f54f | 187 | return; |
mbed_official | 0:7037ed05f54f | 188 | } |
mbed_official | 0:7037ed05f54f | 189 | |
mbed_official | 47:b6d132f1079f | 190 | printf(" RX Data on port %u (%d bytes): ", port, retcode); |
mbed_official | 0:7037ed05f54f | 191 | for (uint8_t i = 0; i < retcode; i++) { |
mbed_official | 47:b6d132f1079f | 192 | printf("%02x ", rx_buffer[i]); |
mbed_official | 0:7037ed05f54f | 193 | } |
mbed_official | 47:b6d132f1079f | 194 | printf("\r\n"); |
mbed_official | 47:b6d132f1079f | 195 | |
mbed_official | 12:5015dfead3f2 | 196 | memset(rx_buffer, 0, sizeof(rx_buffer)); |
mbed_official | 0:7037ed05f54f | 197 | } |
mbed_official | 0:7037ed05f54f | 198 | |
mbed_official | 0:7037ed05f54f | 199 | /** |
mbed_official | 0:7037ed05f54f | 200 | * Event handler |
mbed_official | 0:7037ed05f54f | 201 | */ |
mbed_official | 0:7037ed05f54f | 202 | static void lora_event_handler(lorawan_event_t event) |
mbed_official | 0:7037ed05f54f | 203 | { |
mbed_official | 0:7037ed05f54f | 204 | switch (event) { |
mbed_official | 0:7037ed05f54f | 205 | case CONNECTED: |
saranjay | 61:d220d51ae9d8 | 206 | if(DEBUG) |
saranjay | 61:d220d51ae9d8 | 207 | printf("\r\n Connection - Successful \r\n"); |
mbed_official | 0:7037ed05f54f | 208 | if (MBED_CONF_LORA_DUTY_CYCLE_ON) { |
mbed_official | 0:7037ed05f54f | 209 | send_message(); |
mbed_official | 0:7037ed05f54f | 210 | } else { |
mbed_official | 0:7037ed05f54f | 211 | ev_queue.call_every(TX_TIMER, send_message); |
mbed_official | 0:7037ed05f54f | 212 | } |
mbed_official | 0:7037ed05f54f | 213 | |
mbed_official | 0:7037ed05f54f | 214 | break; |
mbed_official | 0:7037ed05f54f | 215 | case DISCONNECTED: |
mbed_official | 0:7037ed05f54f | 216 | ev_queue.break_dispatch(); |
saranjay | 61:d220d51ae9d8 | 217 | if(DEBUG) |
saranjay | 61:d220d51ae9d8 | 218 | printf("\r\n Disconnected Successfully \r\n"); |
mbed_official | 0:7037ed05f54f | 219 | break; |
mbed_official | 0:7037ed05f54f | 220 | case TX_DONE: |
saranjay | 61:d220d51ae9d8 | 221 | if(DEBUG) |
saranjay | 61:d220d51ae9d8 | 222 | printf("\r\n Message Sent to Network Server \r\n"); |
mbed_official | 0:7037ed05f54f | 223 | if (MBED_CONF_LORA_DUTY_CYCLE_ON) { |
mbed_official | 0:7037ed05f54f | 224 | send_message(); |
mbed_official | 0:7037ed05f54f | 225 | } |
mbed_official | 0:7037ed05f54f | 226 | break; |
mbed_official | 0:7037ed05f54f | 227 | case TX_TIMEOUT: |
mbed_official | 0:7037ed05f54f | 228 | case TX_ERROR: |
mbed_official | 0:7037ed05f54f | 229 | case TX_CRYPTO_ERROR: |
mbed_official | 0:7037ed05f54f | 230 | case TX_SCHEDULING_ERROR: |
saranjay | 61:d220d51ae9d8 | 231 | if(DEBUG) |
saranjay | 61:d220d51ae9d8 | 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: |
saranjay | 61:d220d51ae9d8 | 239 | if(DEBUG) |
saranjay | 61:d220d51ae9d8 | 240 | printf("\r\n Received message from Network Server \r\n"); |
mbed_official | 0:7037ed05f54f | 241 | receive_message(); |
mbed_official | 0:7037ed05f54f | 242 | break; |
mbed_official | 0:7037ed05f54f | 243 | case RX_TIMEOUT: |
mbed_official | 0:7037ed05f54f | 244 | case RX_ERROR: |
saranjay | 61:d220d51ae9d8 | 245 | if(DEBUG) |
saranjay | 61:d220d51ae9d8 | 246 | printf("\r\n Error in reception - Code = %d \r\n", event); |
mbed_official | 0:7037ed05f54f | 247 | break; |
mbed_official | 0:7037ed05f54f | 248 | case JOIN_FAILURE: |
saranjay | 61:d220d51ae9d8 | 249 | if(DEBUG) |
saranjay | 61:d220d51ae9d8 | 250 | printf("\r\n OTAA Failed - Check Keys \r\n"); |
mbed_official | 0:7037ed05f54f | 251 | break; |
mbed_official | 26:f07f5febf97f | 252 | case UPLINK_REQUIRED: |
saranjay | 61:d220d51ae9d8 | 253 | if(DEBUG) |
saranjay | 61:d220d51ae9d8 | 254 | printf("\r\n Uplink required by NS \r\n"); |
mbed_official | 26:f07f5febf97f | 255 | if (MBED_CONF_LORA_DUTY_CYCLE_ON) { |
mbed_official | 26:f07f5febf97f | 256 | send_message(); |
mbed_official | 26:f07f5febf97f | 257 | } |
mbed_official | 26:f07f5febf97f | 258 | break; |
mbed_official | 0:7037ed05f54f | 259 | default: |
mbed_official | 0:7037ed05f54f | 260 | MBED_ASSERT("Unknown Event"); |
mbed_official | 0:7037ed05f54f | 261 | } |
mbed_official | 0:7037ed05f54f | 262 | } |
mbed_official | 0:7037ed05f54f | 263 | |
mbed_official | 0:7037ed05f54f | 264 | // EOF |