Diff: examples/src/class_b_example.cpp

Revision:

33:15ea8f985c54

Child:

42:20f6b29a9903

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/examples/src/class_b_example.cpp	Wed Apr 24 12:50:08 2019 +0000
@@ -0,0 +1,197 @@
+#include "dot_util.h"
+#include "RadioEvent.h"
+ 
+#if ACTIVE_EXAMPLE == CLASS_B_EXAMPLE
+
+/////////////////////////////////////////////////////////////////////////////
+// -------------------- DOT LIBRARY REQUIRED ------------------------------//
+// * Because these example programs can be used for both mDot and xDot     //
+//     devices, the LoRa stack is not included. The libmDot library should //
+//     be imported if building for mDot devices. The libxDot library       //
+//     should be imported if building for xDot devices.                    //
+// * https://developer.mbed.org/teams/MultiTech/code/libmDot-dev-mbed5/    //
+// * https://developer.mbed.org/teams/MultiTech/code/libmDot-mbed5/        //
+// * https://developer.mbed.org/teams/MultiTech/code/libxDot-dev-mbed5/    //
+// * https://developer.mbed.org/teams/MultiTech/code/libxDot-mbed5/        //
+/////////////////////////////////////////////////////////////////////////////
+
+/////////////////////////////////////////////////////////////
+// * these options must match the settings on your gateway //
+// * edit their values to match your configuration         //
+// * frequency sub band is only relevant for the 915 bands //
+// * either the network name and passphrase can be used or //
+//     the network ID (8 bytes) and KEY (16 bytes)         //
+/////////////////////////////////////////////////////////////
+static std::string network_name = "MultiTech";
+static std::string network_passphrase = "MultiTech";
+static uint8_t network_id[] = { 0x6C, 0x4E, 0xEF, 0x66, 0xF4, 0x79, 0x86, 0xA6 };
+static uint8_t network_key[] = { 0x1F, 0x33, 0xA1, 0x70, 0xA5, 0xF1, 0xFD, 0xA0, 0xAB, 0x69, 0x7A, 0xAE, 0x2B, 0x95, 0x91, 0x6B };
+static uint8_t frequency_sub_band = 1;
+static lora::NetworkType public_network = lora::PUBLIC_LORAWAN;
+static uint8_t join_delay = 5;
+static uint8_t ack = 3;
+static bool adr = true;
+
+// Number of ping slots to open per beacon interval - see mDot.h
+static uint8_t ping_periodicity = 4;
+
+mDot* dot = NULL;
+lora::ChannelPlan* plan = NULL;
+
+Serial pc(USBTX, USBRX);
+
+#if defined(TARGET_XDOT_L151CC)
+I2C i2c(I2C_SDA, I2C_SCL);
+ISL29011 lux(i2c);
+#else
+AnalogIn lux(XBEE_AD0);
+#endif
+
+int main() {
+    // Custom event handler for automatically displaying RX data
+    RadioEvent events;
+
+    pc.baud(115200);
+
+#if defined(TARGET_XDOT_L151CC)
+    i2c.frequency(400000);
+#endif
+
+    mts::MTSLog::setLogLevel(mts::MTSLog::TRACE_LEVEL);
+    
+#if CHANNEL_PLAN == CP_US915
+    plan = new lora::ChannelPlan_US915();
+#elif CHANNEL_PLAN == CP_AU915
+    plan = new lora::ChannelPlan_AU915();
+#elif CHANNEL_PLAN == CP_EU868
+    plan = new lora::ChannelPlan_EU868();
+#elif CHANNEL_PLAN == CP_KR920
+    plan = new lora::ChannelPlan_KR920();
+#elif CHANNEL_PLAN == CP_AS923
+    plan = new lora::ChannelPlan_AS923();
+#elif CHANNEL_PLAN == CP_AS923_JAPAN
+    plan = new lora::ChannelPlan_AS923_Japan();
+#elif CHANNEL_PLAN == CP_IN865
+    plan = new lora::ChannelPlan_IN865();
+#endif
+    assert(plan);
+
+    dot = mDot::getInstance(plan);
+    assert(dot);
+
+    logInfo("mbed-os library version: %d.%d.%d", MBED_MAJOR_VERSION, MBED_MINOR_VERSION, MBED_PATCH_VERSION);
+
+    // start from a well-known state
+    logInfo("defaulting Dot configuration");
+    dot->resetConfig();
+    dot->resetNetworkSession();
+
+    // make sure library logging is turned on
+    dot->setLogLevel(mts::MTSLog::INFO_LEVEL);
+
+    // attach the custom events handler
+    dot->setEvents(&events);
+
+    // update configuration if necessary
+    if (dot->getJoinMode() != mDot::OTA) {
+        logInfo("changing network join mode to OTA");
+        if (dot->setJoinMode(mDot::OTA) != mDot::MDOT_OK) {
+            logError("failed to set network join mode to OTA");
+        }
+    }
+    // in OTA and AUTO_OTA join modes, the credentials can be passed to the library as a name and passphrase or an ID and KEY
+    // only one method or the other should be used!
+    // network ID = crc64(network name)
+    // network KEY = cmac(network passphrase)
+    update_ota_config_name_phrase(network_name, network_passphrase, frequency_sub_band, public_network, ack);
+    //update_ota_config_id_key(network_id, network_key, frequency_sub_band, public_network, ack);
+
+    // enable or disable Adaptive Data Rate
+    dot->setAdr(adr);
+
+    // Configure the join delay
+    dot->setJoinDelay(join_delay);
+
+    // Configure the class B ping periodicity
+    dot->setPingPeriodicity(ping_periodicity);
+
+    // save changes to configuration
+    logInfo("saving configuration");
+    if (!dot->saveConfig()) {
+        logError("failed to save configuration");
+    }
+
+    // display configuration
+    display_config();
+
+    // join the network - must do this before attempting to switch to class B
+    join_network();
+
+    // configure the Dot for class B operation
+    // the Dot must also be configured on the gateway for class B
+    // use the lora-query application to do this on a Conduit: http://www.multitech.net/developer/software/lora/lora-network-server/
+    // to provision your Dot for class B operation with a 3rd party gateway, see the gateway or network provider documentation
+    // Note: we won't actually switch to class B until we receive a beacon (mDotEvent::BeaconRx fires)
+    logInfo("changing network mode to class B");
+
+    if (dot->setClass("B") != mDot::MDOT_OK) {
+        logError("Failed to set network mode to class B");
+        logInfo("Reset the MCU to try again");
+        return 0;
+    }
+
+    // Start a timer to check the beacon was acquired
+    LowPowerTimer bcn_timer;
+    bcn_timer.start();
+
+    while (true) {
+        std::vector<uint8_t> tx_data;
+        static bool send_uplink = true;
+
+        // Check if we locked the beacon yet and send an uplink to notify the network server
+        // To receive data from the gateway in class B ping slots, we must have received a beacon
+        // already, and sent one uplink to signal to the network server that we are in class B mode
+        if (events.BeaconLocked && send_uplink) {
+            logInfo("Acquired a beacon lock");
+
+            // Add a random delay before trying the uplink to avoid collisions w/ other motes
+            srand(dot->getRadioRandom());
+            uint32_t rand_delay = rand() % 5000;
+            logInfo("Applying a random delay of %d ms before class notification uplink", rand_delay);
+            osDelay(rand_delay);
+
+            // Ensure the link is idle before trying to transmit
+            while (!dot->getIsIdle()) {
+                osDelay(10);
+            }
+
+            if (send_data(tx_data) != mDot::MDOT_OK) {
+                logError("Failed to inform the network server we are in class B");
+                logInfo("Reset the MCU to try again");
+                return 0;
+            }
+
+            logInfo("Enqueued packets may now be scheduled on class B ping slots");
+            send_uplink = false;
+            bcn_timer.stop();
+        } else if (!events.BeaconLocked) {
+            logInfo("Waiting to receive a beacon..");
+
+            if (bcn_timer.read() > lora::DEFAULT_BEACON_PERIOD) {
+                if (dot->setClass("B") != mDot::MDOT_OK) {
+                    logError("Failed to set network mode to class B");
+                    logInfo("Reset the MCU to try again");
+                    return 0;
+                }
+
+                bcn_timer.reset();
+            }
+        }
+
+        Thread::wait(10000);
+    }
+
+    return 0;
+}
+
+#endif