wotio library demonstrating LoRaWAN connectivity using MultiTech mDot & MultiTech Conduit Gateway

Dependencies:   libmDot mbed-rtos mbed

Revision:
0:eea6446bc510
Child:
1:6b84fe382e27
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Wed Oct 28 22:04:20 2015 +0000
@@ -0,0 +1,145 @@
+#include "mbed.h"
+#include "mDot.h"
+#include "MTSLog.h"
+#include <string>
+#include <vector>
+#include <algorithm>
+
+// these options must match the settings on your Conduit
+// uncomment the following lines and edit their values to match your configuration
+static std::string config_network_name = "wotioloranetwork";
+static std::string config_network_pass = "iotandbigdata";
+static uint8_t config_frequency_sub_band = 7;
+
+
+#define UDK2 1
+
+#ifdef UDK2
+DigitalOut led(LED1);
+#else
+DigitalOut led(XBEE_RSSI);
+#endif
+
+Ticker tick;
+
+// callback function to change LED state
+void blink() {
+    led = !led;
+}
+
+
+
+int main() {
+    int32_t ret;
+    mDot* dot;
+    std::vector<uint8_t> data;
+    std::string data_str = "hello!";
+
+   
+    // configure the Ticker to blink the LED on 500ms interval
+    tick.attach(&blink, 0.5);
+    
+    // print the message on 2s interval
+    while (true) {
+        printf("hello world");
+        wait(2);
+    }
+    
+    
+    // get a mDot handle
+    dot = mDot::getInstance();
+    
+    // print library version information
+    logInfo("version: %s", dot->getId().c_str());
+
+    //*******************************************
+    // configuration
+    //*******************************************
+    // reset to default config so we know what state we're in
+    dot->resetConfig();
+    
+    dot->setLogLevel(mts::MTSLog::INFO_LEVEL);
+
+    // set up the mDot with our network information: frequency sub band, network name, and network password
+    // these can all be saved in NVM so they don't need to be set every time - see mDot::saveConfig()
+    
+    // frequency sub band is only applicable in the 915 (US) frequency band
+    // if using a MultiTech Conduit gateway, use the same sub band as your Conduit (1-8) - the mDot will use the 8 channels in that sub band
+    // if using a gateway that supports all 64 channels, use sub band 0 - the mDot will use all 64 channels
+    logInfo("setting frequency sub band");
+    if ((ret = dot->setFrequencySubBand(config_frequency_sub_band)) != mDot::MDOT_OK) {
+        logError("failed to set frequency sub band %d:%s", ret, mDot::getReturnCodeString(ret).c_str());
+    }
+    
+    logInfo("setting network name");
+    if ((ret = dot->setNetworkName(config_network_name)) != mDot::MDOT_OK) {
+        logError("failed to set network name %d:%s", ret, mDot::getReturnCodeString(ret).c_str());
+    }
+    
+    logInfo("setting network password");
+    if ((ret = dot->setNetworkPassphrase(config_network_pass)) != mDot::MDOT_OK) {
+        logError("failed to set network password %d:%s", ret, mDot::getReturnCodeString(ret).c_str());
+    }
+    
+    // a higher spreading factor allows for longer range but lower throughput
+    // in the 915 (US) frequency band, spreading factors 7 - 10 are available
+    // in the 868 (EU) frequency band, spreading factors 7 - 12 are available
+    logInfo("setting TX spreading factor");
+    if ((ret = dot->setTxDataRate(mDot::SF_10)) != mDot::MDOT_OK) {
+        logError("failed to set TX datarate %d:%s", ret, mDot::getReturnCodeString(ret).c_str());
+    }
+    
+    // request receive confirmation of packets from the gateway
+    logInfo("enabling ACKs");
+    if ((ret = dot->setAck(1)) != mDot::MDOT_OK) {
+        logError("failed to enable ACKs %d:%s", ret, mDot::getReturnCodeString(ret).c_str());
+    }
+    
+    // set join mode to AUTO_OTA so the mDot doesn't have to rejoin after sleeping
+    logInfo("setting join mode to AUTO_OTA");
+    if ((ret = dot->setJoinMode(mDot::AUTO_OTA)) != mDot::MDOT_OK) {
+        logError("failed to set join mode %d:%s", ret, mDot::getReturnCodeString(ret).c_str());
+    }
+    
+    // save this configuration to the mDot's NVM
+    logInfo("saving config");
+    if (! dot->saveConfig()) {
+        logError("failed to save configuration");
+    }
+    //*******************************************
+    // end of configuration
+    //*******************************************
+
+    // format data for sending to the gateway
+    for (std::string::iterator it = data_str.begin(); it != data_str.end(); it++)
+        data.push_back((uint8_t) *it);
+
+    // join the network if not joined
+    if (!dot->getNetworkJoinStatus()) {
+        logInfo("network not joined, joining network");
+        if ((ret = dot->joinNetwork()) != mDot::MDOT_OK) {
+            logError("failed to join network %d:%s", ret, mDot::getReturnCodeString(ret).c_str());
+        }
+    }
+    if (dot->getNetworkJoinStatus()) {
+        // send the data
+        // ACKs are enabled by default, so we're expecting to get one back
+        if ((ret = dot->send(data)) != mDot::MDOT_OK) {
+            logError("failed to send %d:%s", ret, mDot::getReturnCodeString(ret).c_str());
+        } else {
+            logInfo("successfully sent data to gateway");
+        }
+    }
+
+    // in the 868 (EU) frequency band, we need to wait until another channel is available before transmitting again
+    uint32_t sleep_time = std::max((uint32_t)10000, (uint32_t)dot->getNextTxMs()) / 1000;
+    logInfo("going to sleep...");
+
+    // go to deepsleep and wake up automatically sleep_time seconds later
+    dot->sleep(sleep_time, mDot::RTC_ALARM);
+
+    // go to deepsleep and wake up on rising edge of WKUP pin (PA0/XBEE_CTS/XBEE_DIO7)
+    // dot->sleep(0, mDot::INTERRUPT);
+
+    return 0;
+}