Ashu Joshi / Mbed 2 deprecated mDot_LoRa_Connect_Example_GroveSensorTempAndLight

This is a fork of the Multitech mDot LoRa Connect Example modified to log data or send from Temperature and Light Sensors connected to the mDot UDK

Dependencies:   libmDot mbed-rtos mbed

Fork of mDot_LoRa_Connect_Example by MultiTech

main.cpp@7:928e848b92c8, 2016-06-16 (annotated)

Committer:
AshuJoshi
Date:
Thu Jun 16 00:37:16 2016 +0000
Revision:
7:928e848b92c8
Parent:
6:f0b6fea36e28 
Modified the LoRa Connect Example published by MultiTech for reading Grove Temperature and Light Sensors and sending the sensor reading to the MultiTech mLinux LoRa Gateway

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mfiore 0:09250cd371d2 1 #include "mbed.h"
mfiore 0:09250cd371d2 2 #include "mDot.h"
mfiore 4:36e214ebfa56 3 #include "MTSLog.h"
mfiore 0:09250cd371d2 4 #include <string>
mfiore 0:09250cd371d2 5 #include <vector>
mfiore 4:36e214ebfa56 6 #include <algorithm>
mfiore 0:09250cd371d2 7
AshuJoshi 7:928e848b92c8 8 // Connect the Grove Shield to the UDK
AshuJoshi 7:928e848b92c8 9 // Connect the Grove Temperature Sensor to A0 on Shield
AshuJoshi 7:928e848b92c8 10 // http://www.seeedstudio.com/wiki/Grove_-_Temperature_Sensor
AshuJoshi 7:928e848b92c8 11 // Connect the Grove Light Sensor to the A1
AshuJoshi 7:928e848b92c8 12 // http://www.seeedstudio.com/wiki/Grove_-_Light_Sensor
AshuJoshi 7:928e848b92c8 13
AshuJoshi 7:928e848b92c8 14 AnalogIn in(PB_1); // This corresponds to A0 Connector on the Grove Shield
AshuJoshi 7:928e848b92c8 15 AnalogIn light(PB_0); // This corresponds to A1 Connector on the Grove Shield
AshuJoshi 7:928e848b92c8 16
AshuJoshi 7:928e848b92c8 17 float temperature;
AshuJoshi 7:928e848b92c8 18 float llevel;
AshuJoshi 7:928e848b92c8 19
mfiore 2:6e2c378339d9 20 // these options must match the settings on your Conduit
mfiore 2:6e2c378339d9 21 // uncomment the following lines and edit their values to match your configuration
AshuJoshi 7:928e848b92c8 22 static std::string config_network_name = "ATLANTA_TTN";
AshuJoshi 7:928e848b92c8 23 static std::string config_network_pass = "ATLANTA_TTN";
AshuJoshi 7:928e848b92c8 24 static uint8_t config_frequency_sub_band = 7;
AshuJoshi 7:928e848b92c8 25
AshuJoshi 7:928e848b92c8 26 float readTemperature(){
AshuJoshi 7:928e848b92c8 27 float temp;
AshuJoshi 7:928e848b92c8 28 int B=39751;
AshuJoshi 7:928e848b92c8 29 float resistance;
AshuJoshi 7:928e848b92c8 30 int a;
AshuJoshi 7:928e848b92c8 31 // Read & Print Temperature
AshuJoshi 7:928e848b92c8 32 a = in.read_u16();
AshuJoshi 7:928e848b92c8 33 //printf("analog value: %i \r\n", a);
AshuJoshi 7:928e848b92c8 34 resistance = (float)(65534-a)*10000/a; //get the resistance of the sensor;
AshuJoshi 7:928e848b92c8 35 temp=1/(log(resistance/10000)/B+1/298.15)-273.15;//convert to temperature via datasheet
AshuJoshi 7:928e848b92c8 36 //logInfo("Temperature: %f, temp);
AshuJoshi 7:928e848b92c8 37 return temp;
AshuJoshi 7:928e848b92c8 38 }
AshuJoshi 7:928e848b92c8 39
AshuJoshi 7:928e848b92c8 40 float readLightSensor() {
AshuJoshi 7:928e848b92c8 41 float sensorValue;
AshuJoshi 7:928e848b92c8 42 float rsensor;
AshuJoshi 7:928e848b92c8 43 sensorValue = light.read();
AshuJoshi 7:928e848b92c8 44 rsensor = (float)(1023-sensorValue)*10/sensorValue;
AshuJoshi 7:928e848b92c8 45 printf("Sensor reading: %2.2f - %2.2f\r\n", sensorValue, rsensor);
AshuJoshi 7:928e848b92c8 46
AshuJoshi 7:928e848b92c8 47 return rsensor;
AshuJoshi 7:928e848b92c8 48
AshuJoshi 7:928e848b92c8 49 }
AshuJoshi 7:928e848b92c8 50
mfiore 0:09250cd371d2 51
mfiore 0:09250cd371d2 52 int main() {
mfiore 0:09250cd371d2 53 int32_t ret;
mfiore 0:09250cd371d2 54 mDot* dot;
mfiore 0:09250cd371d2 55 std::vector<uint8_t> data;
mfiore 4:36e214ebfa56 56 std::string data_str = "hello!";
AshuJoshi 7:928e848b92c8 57 char string_buffer[64];
AshuJoshi 7:928e848b92c8 58 std::string separator_str = ",";
AshuJoshi 7:928e848b92c8 59 std::string temp_cls = "TC";
mfiore 2:6e2c378339d9 60
mfiore 0:09250cd371d2 61 // get a mDot handle
mfiore 0:09250cd371d2 62 dot = mDot::getInstance();
mfiore 2:6e2c378339d9 63
mfiore 2:6e2c378339d9 64 // print library version information
mfiore 2:6e2c378339d9 65 logInfo("version: %s", dot->getId().c_str());
mfiore 0:09250cd371d2 66
mfiore 2:6e2c378339d9 67 //*******************************************
mfiore 2:6e2c378339d9 68 // configuration
mfiore 2:6e2c378339d9 69 //*******************************************
mfiore 0:09250cd371d2 70 // reset to default config so we know what state we're in
AshuJoshi 7:928e848b92c8 71 //dot->resetConfig();
mfiore 0:09250cd371d2 72
AshuJoshi 7:928e848b92c8 73 //dot->setLogLevel(mts::MTSLog::INFO_LEVEL);
AshuJoshi 7:928e848b92c8 74 dot->setLogLevel(mts::MTSLog::TRACE_LEVEL);
AshuJoshi 7:928e848b92c8 75
mfiore 2:6e2c378339d9 76 // set up the mDot with our network information: frequency sub band, network name, and network password
mfiore 2:6e2c378339d9 77 // these can all be saved in NVM so they don't need to be set every time - see mDot::saveConfig()
mfiore 4:36e214ebfa56 78
mfiore 4:36e214ebfa56 79 // frequency sub band is only applicable in the 915 (US) frequency band
mfiore 4:36e214ebfa56 80 // 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
mfiore 4:36e214ebfa56 81 // if using a gateway that supports all 64 channels, use sub band 0 - the mDot will use all 64 channels
jreiss 5:e9d78a9bafc5 82
AshuJoshi 7:928e848b92c8 83 logInfo("setting to public network");
AshuJoshi 7:928e848b92c8 84 if ((ret = dot->setPublicNetwork(true)) != mDot::MDOT_OK) {
AshuJoshi 7:928e848b92c8 85 logError("failed to set public network %d:%s", ret, mDot::getReturnCodeString(ret).c_str());
AshuJoshi 7:928e848b92c8 86 }
jreiss 5:e9d78a9bafc5 87
jreiss 5:e9d78a9bafc5 88 logInfo("setting frequency sub band");
mfiore 0:09250cd371d2 89 if ((ret = dot->setFrequencySubBand(config_frequency_sub_band)) != mDot::MDOT_OK) {
mfiore 2:6e2c378339d9 90 logError("failed to set frequency sub band %d:%s", ret, mDot::getReturnCodeString(ret).c_str());
mfiore 2:6e2c378339d9 91 }
mfiore 4:36e214ebfa56 92
mfiore 2:6e2c378339d9 93 logInfo("setting network name");
mfiore 2:6e2c378339d9 94 if ((ret = dot->setNetworkName(config_network_name)) != mDot::MDOT_OK) {
mfiore 2:6e2c378339d9 95 logError("failed to set network name %d:%s", ret, mDot::getReturnCodeString(ret).c_str());
mfiore 0:09250cd371d2 96 }
mfiore 4:36e214ebfa56 97
mfiore 2:6e2c378339d9 98 logInfo("setting network password");
mfiore 2:6e2c378339d9 99 if ((ret = dot->setNetworkPassphrase(config_network_pass)) != mDot::MDOT_OK) {
mfiore 2:6e2c378339d9 100 logError("failed to set network password %d:%s", ret, mDot::getReturnCodeString(ret).c_str());
mfiore 0:09250cd371d2 101 }
mfiore 4:36e214ebfa56 102
mfiore 4:36e214ebfa56 103 // a higher spreading factor allows for longer range but lower throughput
mfiore 4:36e214ebfa56 104 // in the 915 (US) frequency band, spreading factors 7 - 10 are available
mfiore 4:36e214ebfa56 105 // in the 868 (EU) frequency band, spreading factors 7 - 12 are available
mfiore 4:36e214ebfa56 106 logInfo("setting TX spreading factor");
mfiore 4:36e214ebfa56 107 if ((ret = dot->setTxDataRate(mDot::SF_10)) != mDot::MDOT_OK) {
mfiore 4:36e214ebfa56 108 logError("failed to set TX datarate %d:%s", ret, mDot::getReturnCodeString(ret).c_str());
mfiore 4:36e214ebfa56 109 }
mfiore 4:36e214ebfa56 110
mfiore 4:36e214ebfa56 111 // request receive confirmation of packets from the gateway
mfiore 4:36e214ebfa56 112 logInfo("enabling ACKs");
mfiore 4:36e214ebfa56 113 if ((ret = dot->setAck(1)) != mDot::MDOT_OK) {
mfiore 4:36e214ebfa56 114 logError("failed to enable ACKs %d:%s", ret, mDot::getReturnCodeString(ret).c_str());
mfiore 4:36e214ebfa56 115 }
mfiore 4:36e214ebfa56 116
mfiore 4:36e214ebfa56 117 // save this configuration to the mDot's NVM
mfiore 2:6e2c378339d9 118 logInfo("saving config");
mfiore 2:6e2c378339d9 119 if (! dot->saveConfig()) {
mfiore 2:6e2c378339d9 120 logError("failed to save configuration");
mfiore 0:09250cd371d2 121 }
mfiore 2:6e2c378339d9 122 //*******************************************
mfiore 2:6e2c378339d9 123 // end of configuration
mfiore 2:6e2c378339d9 124 //*******************************************
mfiore 0:09250cd371d2 125
mfiore 0:09250cd371d2 126 // attempt to join the network
mfiore 2:6e2c378339d9 127 logInfo("joining network");
mfiore 0:09250cd371d2 128 while ((ret = dot->joinNetwork()) != mDot::MDOT_OK) {
mfiore 2:6e2c378339d9 129 logError("failed to join network %d:%s", ret, mDot::getReturnCodeString(ret).c_str());
mfiore 4:36e214ebfa56 130 // in the 868 (EU) frequency band, we need to wait until another channel is available before transmitting again
mfiore 4:36e214ebfa56 131 osDelay(std::max((uint32_t)1000, (uint32_t)dot->getNextTxMs()));
mfiore 0:09250cd371d2 132 }
mfiore 0:09250cd371d2 133
mfiore 0:09250cd371d2 134 // format data for sending to the gateway
AshuJoshi 7:928e848b92c8 135 //for (std::string::iterator it = data_str.begin(); it != data_str.end(); it++)
AshuJoshi 7:928e848b92c8 136 // data.push_back((uint8_t) *it);
mfiore 0:09250cd371d2 137
mfiore 0:09250cd371d2 138 while (true) {
AshuJoshi 7:928e848b92c8 139 data.clear();
AshuJoshi 7:928e848b92c8 140 temperature = readTemperature();
AshuJoshi 7:928e848b92c8 141
AshuJoshi 7:928e848b92c8 142 // Temperature
AshuJoshi 7:928e848b92c8 143 sprintf(string_buffer, "%s%3.2f", "TC:", temperature);
AshuJoshi 7:928e848b92c8 144 //sprintf(string_buffer, "%3.1f", temperature);
AshuJoshi 7:928e848b92c8 145 for (int i = 0; i<strlen(string_buffer); i++)
AshuJoshi 7:928e848b92c8 146 {
AshuJoshi 7:928e848b92c8 147 data.push_back(((char*)string_buffer)[i]);
AshuJoshi 7:928e848b92c8 148 }
AshuJoshi 7:928e848b92c8 149
AshuJoshi 7:928e848b92c8 150 logDebug("Sending LoRa message, length: %d", data.size());
AshuJoshi 7:928e848b92c8 151 logDebug("sending data: ");
AshuJoshi 7:928e848b92c8 152 for(int i = 0; i < data.size(); i++)
AshuJoshi 7:928e848b92c8 153 {
AshuJoshi 7:928e848b92c8 154 printf("%c", data[i]);
AshuJoshi 7:928e848b92c8 155 }
AshuJoshi 7:928e848b92c8 156 printf("\n");
AshuJoshi 7:928e848b92c8 157
mfiore 4:36e214ebfa56 158 // send the data to the gateway
mfiore 0:09250cd371d2 159 if ((ret = dot->send(data)) != mDot::MDOT_OK) {
mfiore 2:6e2c378339d9 160 logError("failed to send", ret, mDot::getReturnCodeString(ret).c_str());
mfiore 0:09250cd371d2 161 } else {
mfiore 2:6e2c378339d9 162 logInfo("successfully sent data to gateway");
mfiore 0:09250cd371d2 163 }
mfiore 0:09250cd371d2 164
mfiore 4:36e214ebfa56 165 // in the 868 (EU) frequency band, we need to wait until another channel is available before transmitting again
mfiore 4:36e214ebfa56 166 osDelay(std::max((uint32_t)5000, (uint32_t)dot->getNextTxMs()));
AshuJoshi 7:928e848b92c8 167
AshuJoshi 7:928e848b92c8 168 data.clear();
AshuJoshi 7:928e848b92c8 169 // Light Level
AshuJoshi 7:928e848b92c8 170 llevel = readLightSensor();
AshuJoshi 7:928e848b92c8 171 sprintf(string_buffer, "%s%5.1f", "LL:", llevel);
AshuJoshi 7:928e848b92c8 172 for (int i = 0; i<strlen(string_buffer); i++)
AshuJoshi 7:928e848b92c8 173 {
AshuJoshi 7:928e848b92c8 174 data.push_back(((char*)string_buffer)[i]);
AshuJoshi 7:928e848b92c8 175 }
AshuJoshi 7:928e848b92c8 176 logDebug("Sending LoRa message, length: %d", data.size());
AshuJoshi 7:928e848b92c8 177 logDebug("sending data: ");
AshuJoshi 7:928e848b92c8 178 for(int i = 0; i < data.size(); i++)
AshuJoshi 7:928e848b92c8 179 {
AshuJoshi 7:928e848b92c8 180 printf("%c", data[i]);
AshuJoshi 7:928e848b92c8 181 }
AshuJoshi 7:928e848b92c8 182 printf("\n");
AshuJoshi 7:928e848b92c8 183
AshuJoshi 7:928e848b92c8 184 // send the data to the gateway
AshuJoshi 7:928e848b92c8 185 if ((ret = dot->send(data)) != mDot::MDOT_OK) {
AshuJoshi 7:928e848b92c8 186 logError("failed to send", ret, mDot::getReturnCodeString(ret).c_str());
AshuJoshi 7:928e848b92c8 187 } else {
AshuJoshi 7:928e848b92c8 188 logInfo("successfully sent data to gateway");
AshuJoshi 7:928e848b92c8 189 }
AshuJoshi 7:928e848b92c8 190
AshuJoshi 7:928e848b92c8 191 // in the 868 (EU) frequency band, we need to wait until another channel is available before transmitting again
AshuJoshi 7:928e848b92c8 192 osDelay(std::max((uint32_t)5000, (uint32_t)dot->getNextTxMs()));
AshuJoshi 7:928e848b92c8 193
mfiore 0:09250cd371d2 194 }
mfiore 0:09250cd371d2 195
mfiore 0:09250cd371d2 196 return 0;
mfiore 0:09250cd371d2 197 }