B-L072 ST Board BMP280 LoRaWAN end node
Dependencies: BME280
Temperature/Pressure LoRaWAN End Node
main.cpp@62:078d66d985f8, 2020-07-25 (annotated)
- Committer:
- saranjay
- Date:
- Sat Jul 25 17:46:37 2020 +0000
- Revision:
- 62:078d66d985f8
- Parent:
- 61:d220d51ae9d8
- Child:
- 63:7b4427c6bded
final 1.0;
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 | |
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 |
saranjay | 61:d220d51ae9d8 | 30 | #define BUFFER_SIZE 12 |
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; |
saranjay | 62:078d66d985f8 | 41 | float sensor_values[3]; |
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(); |
saranjay | 61:d220d51ae9d8 | 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) |
saranjay | 61:d220d51ae9d8 | 166 | printf("\r\n %d bytes scheduled for transmission \r\n", retcode); |
saranjay | 62:078d66d985f8 | 167 | |
saranjay | 62:078d66d985f8 | 168 | //Check if radio wakes up automatically. If not, then call radio.TX(); |
saranjay | 62:078d66d985f8 | 169 | radio.sleep(); |
mbed_official | 0:7037ed05f54f | 170 | } |
mbed_official | 0:7037ed05f54f | 171 | |
mbed_official | 0:7037ed05f54f | 172 | /** |
mbed_official | 0:7037ed05f54f | 173 | * Receive a message from the Network Server |
mbed_official | 0:7037ed05f54f | 174 | */ |
mbed_official | 0:7037ed05f54f | 175 | static void receive_message() |
mbed_official | 0:7037ed05f54f | 176 | { |
mbed_official | 47:b6d132f1079f | 177 | |
mbed_official | 0:7037ed05f54f | 178 | } |
mbed_official | 0:7037ed05f54f | 179 | |
mbed_official | 0:7037ed05f54f | 180 | /** |
mbed_official | 0:7037ed05f54f | 181 | * Event handler |
mbed_official | 0:7037ed05f54f | 182 | */ |
mbed_official | 0:7037ed05f54f | 183 | static void lora_event_handler(lorawan_event_t event) |
mbed_official | 0:7037ed05f54f | 184 | { |
mbed_official | 0:7037ed05f54f | 185 | switch (event) { |
mbed_official | 0:7037ed05f54f | 186 | case CONNECTED: |
saranjay | 61:d220d51ae9d8 | 187 | if(DEBUG) |
saranjay | 61:d220d51ae9d8 | 188 | printf("\r\n Connection - Successful \r\n"); |
mbed_official | 0:7037ed05f54f | 189 | if (MBED_CONF_LORA_DUTY_CYCLE_ON) { |
mbed_official | 0:7037ed05f54f | 190 | send_message(); |
mbed_official | 0:7037ed05f54f | 191 | } else { |
mbed_official | 0:7037ed05f54f | 192 | ev_queue.call_every(TX_TIMER, send_message); |
mbed_official | 0:7037ed05f54f | 193 | } |
mbed_official | 0:7037ed05f54f | 194 | |
mbed_official | 0:7037ed05f54f | 195 | break; |
mbed_official | 0:7037ed05f54f | 196 | case DISCONNECTED: |
mbed_official | 0:7037ed05f54f | 197 | ev_queue.break_dispatch(); |
saranjay | 61:d220d51ae9d8 | 198 | if(DEBUG) |
saranjay | 61:d220d51ae9d8 | 199 | printf("\r\n Disconnected Successfully \r\n"); |
mbed_official | 0:7037ed05f54f | 200 | break; |
mbed_official | 0:7037ed05f54f | 201 | case TX_DONE: |
saranjay | 61:d220d51ae9d8 | 202 | if(DEBUG) |
saranjay | 61:d220d51ae9d8 | 203 | printf("\r\n Message Sent to Network Server \r\n"); |
mbed_official | 0:7037ed05f54f | 204 | if (MBED_CONF_LORA_DUTY_CYCLE_ON) { |
mbed_official | 0:7037ed05f54f | 205 | send_message(); |
mbed_official | 0:7037ed05f54f | 206 | } |
mbed_official | 0:7037ed05f54f | 207 | break; |
mbed_official | 0:7037ed05f54f | 208 | case TX_TIMEOUT: |
mbed_official | 0:7037ed05f54f | 209 | case TX_ERROR: |
mbed_official | 0:7037ed05f54f | 210 | case TX_CRYPTO_ERROR: |
mbed_official | 0:7037ed05f54f | 211 | case TX_SCHEDULING_ERROR: |
saranjay | 61:d220d51ae9d8 | 212 | if(DEBUG) |
saranjay | 61:d220d51ae9d8 | 213 | printf("\r\n Transmission Error - EventCode = %d \r\n", event); |
mbed_official | 0:7037ed05f54f | 214 | // try again |
mbed_official | 0:7037ed05f54f | 215 | if (MBED_CONF_LORA_DUTY_CYCLE_ON) { |
mbed_official | 0:7037ed05f54f | 216 | send_message(); |
mbed_official | 0:7037ed05f54f | 217 | } |
mbed_official | 0:7037ed05f54f | 218 | break; |
mbed_official | 0:7037ed05f54f | 219 | case RX_DONE: |
saranjay | 61:d220d51ae9d8 | 220 | if(DEBUG) |
saranjay | 61:d220d51ae9d8 | 221 | printf("\r\n Received message from Network Server \r\n"); |
mbed_official | 0:7037ed05f54f | 222 | receive_message(); |
mbed_official | 0:7037ed05f54f | 223 | break; |
mbed_official | 0:7037ed05f54f | 224 | case RX_TIMEOUT: |
mbed_official | 0:7037ed05f54f | 225 | case RX_ERROR: |
saranjay | 61:d220d51ae9d8 | 226 | if(DEBUG) |
saranjay | 61:d220d51ae9d8 | 227 | printf("\r\n Error in reception - Code = %d \r\n", event); |
mbed_official | 0:7037ed05f54f | 228 | break; |
mbed_official | 0:7037ed05f54f | 229 | case JOIN_FAILURE: |
saranjay | 61:d220d51ae9d8 | 230 | if(DEBUG) |
saranjay | 61:d220d51ae9d8 | 231 | printf("\r\n OTAA Failed - Check Keys \r\n"); |
mbed_official | 0:7037ed05f54f | 232 | break; |
mbed_official | 26:f07f5febf97f | 233 | case UPLINK_REQUIRED: |
saranjay | 61:d220d51ae9d8 | 234 | if(DEBUG) |
saranjay | 61:d220d51ae9d8 | 235 | printf("\r\n Uplink required by NS \r\n"); |
mbed_official | 26:f07f5febf97f | 236 | if (MBED_CONF_LORA_DUTY_CYCLE_ON) { |
mbed_official | 26:f07f5febf97f | 237 | send_message(); |
mbed_official | 26:f07f5febf97f | 238 | } |
mbed_official | 26:f07f5febf97f | 239 | break; |
mbed_official | 0:7037ed05f54f | 240 | default: |
mbed_official | 0:7037ed05f54f | 241 | MBED_ASSERT("Unknown Event"); |
mbed_official | 0:7037ed05f54f | 242 | } |
mbed_official | 0:7037ed05f54f | 243 | } |
mbed_official | 0:7037ed05f54f | 244 | |
mbed_official | 0:7037ed05f54f | 245 | // EOF |