Xinlei Cao / Mbed 2 deprecated MbedSmartRestMain

Own fork of MbedSmartRestMain

Dependencies:   C027_Support C12832 LM75B MMA7660 MbedSmartRest mbed-rtos mbed

Fork of MbedSmartRestMain by Cumulocity Official

measurement/SignalQualityMeasurement.cpp@72:c5709ae7b193, 2015-02-16 (annotated)

Committer:
xinlei
Date:
Mon Feb 16 13:15:52 2015 +0000
Revision:
72:c5709ae7b193
Parent:
71:063c45e99578
Child:
73:313975bfec96
logging: incorporation of dedicated logging module.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Cumulocity 41:804f6a0bda26 1 #include "SignalQualityMeasurement.h"
Cumulocity 41:804f6a0bda26 2 #include "ComposedRecord.h"
Cumulocity 41:804f6a0bda26 3 #include "CharValue.h"
Cumulocity 41:804f6a0bda26 4 #include "IntegerValue.h"
Cumulocity 41:804f6a0bda26 5 #include "FloatValue.h"
xinlei 72:c5709ae7b193 6 #include "logging.h"
Cumulocity 41:804f6a0bda26 7
xinlei 71:063c45e99578 8 #define THRESHOLD_PERCENT_SIG 0.05 // Percentage cut-off for avoiding sending similar signal sensor data.
xinlei 71:063c45e99578 9 #define TIME_LIMIT_SIG 900 // Time interval for forcing a sending even if signal sensor readings are constantly similar.
xinlei 71:063c45e99578 10
vwochnik 55:a0f7295ed6b6 11 SignalQualityMeasurement::SignalQualityMeasurement(AbstractSmartRest& client, SmartRestTemplate& tpl, long& deviceId, DeviceInfo& deviceInfo) :
Cumulocity 41:804f6a0bda26 12 _client(client),
Cumulocity 41:804f6a0bda26 13 _tpl(tpl),
Cumulocity 41:804f6a0bda26 14 _deviceId(deviceId),
Cumulocity 41:804f6a0bda26 15 _deviceInfo(deviceInfo)
Cumulocity 41:804f6a0bda26 16 {
Cumulocity 41:804f6a0bda26 17 _init = false;
xinlei 71:063c45e99578 18 oldValues[0] = 0;
xinlei 71:063c45e99578 19 oldValues[1] = 0;
xinlei 71:063c45e99578 20 sendingTimer.start();
Cumulocity 41:804f6a0bda26 21 }
Cumulocity 41:804f6a0bda26 22
Cumulocity 41:804f6a0bda26 23 bool SignalQualityMeasurement::init()
Cumulocity 41:804f6a0bda26 24 {
Cumulocity 41:804f6a0bda26 25 if (_init)
Cumulocity 41:804f6a0bda26 26 return false;
Cumulocity 41:804f6a0bda26 27
Cumulocity 41:804f6a0bda26 28 // Insert measurement
Cumulocity 41:804f6a0bda26 29 // USAGE: 104,<DEVICE/ID>,<RSSI>,<BER>
Cumulocity 41:804f6a0bda26 30 if (!_tpl.add("10,104,POST,/measurement/measurements,application/vnd.com.nsn.cumulocity.measurement+json,application/vnd.com.nsn.cumulocity.measurement+json,%%,NOW UNSIGNED NUMBER UNSIGNED,\"{\"\"time\"\":\"\"%%\"\",\"\"source\"\":{\"\"id\"\":\"\"%%\"\"},\"\"type\"\":\"\"c8y_SignalStrength\"\",\"\"c8y_SignalStrength\"\":{\"\"rssi\"\":{\"\"value\"\":%%,\"\"unit\"\":\"\"dBm\"\"},\"\"ber\"\":{\"\"value\"\":%%,\"\"unit\"\":\"\"%\"\"}}}\"\r\n"))
Cumulocity 41:804f6a0bda26 31 return false;
Cumulocity 41:804f6a0bda26 32
Cumulocity 41:804f6a0bda26 33 _init = true;
Cumulocity 41:804f6a0bda26 34 return true;
Cumulocity 41:804f6a0bda26 35 }
Cumulocity 41:804f6a0bda26 36
Cumulocity 41:804f6a0bda26 37 bool SignalQualityMeasurement::run()
Cumulocity 41:804f6a0bda26 38 {
Cumulocity 41:804f6a0bda26 39 DeviceInfo::SignalQuality *signalQuality;
Cumulocity 41:804f6a0bda26 40
Cumulocity 41:804f6a0bda26 41 if ((signalQuality = _deviceInfo.signalQuality()) == NULL)
Cumulocity 41:804f6a0bda26 42 return false;
Cumulocity 41:804f6a0bda26 43
xinlei 71:063c45e99578 44 float data[2] = {0, 0};
xinlei 71:063c45e99578 45 data[0] = signalQuality->rssi;
xinlei 71:063c45e99578 46 data[1] = signalQuality->ber;
xinlei 71:063c45e99578 47 if (abs(oldValues[0]-data[0]) <= abs(oldValues[0])*THRESHOLD_PERCENT_SIG &&
xinlei 71:063c45e99578 48 abs(oldValues[1]-data[1]) <= abs(oldValues[1])*THRESHOLD_PERCENT_SIG) {
xinlei 71:063c45e99578 49 if (sendingTimer.read() < TIME_LIMIT_SIG) {
xinlei 72:c5709ae7b193 50 aInfo("Similar signal readings found, no sending!\r\n");
xinlei 71:063c45e99578 51 return true;
xinlei 71:063c45e99578 52 } else {
xinlei 72:c5709ae7b193 53 aInfo("Sending timer of signal sensor timed out at %f s, a sending is forced.\r\n", sendingTimer.read());
xinlei 71:063c45e99578 54 }
xinlei 71:063c45e99578 55 }
xinlei 71:063c45e99578 56
Cumulocity 41:804f6a0bda26 57 ComposedRecord record;
Cumulocity 41:804f6a0bda26 58 IntegerValue msgId(104);
Cumulocity 41:804f6a0bda26 59 IntegerValue devId(_deviceId);
Cumulocity 41:804f6a0bda26 60 IntegerValue rssi(signalQuality->rssi);
Cumulocity 41:804f6a0bda26 61 IntegerValue ber(signalQuality->ber);
Cumulocity 41:804f6a0bda26 62 if ((!record.add(msgId)) || (!record.add(devId)) || (!record.add(rssi)) || (!record.add(ber)))
Cumulocity 41:804f6a0bda26 63 return false;
Cumulocity 41:804f6a0bda26 64
Cumulocity 41:804f6a0bda26 65 if (_client.send(record) != SMARTREST_SUCCESS) {
xinlei 72:c5709ae7b193 66 aError("Signal measurement failed.\r\n");
Cumulocity 41:804f6a0bda26 67 _client.stop();
Cumulocity 41:804f6a0bda26 68 return false;
Cumulocity 41:804f6a0bda26 69 }
xinlei 71:063c45e99578 70
Cumulocity 41:804f6a0bda26 71 _client.stop();
xinlei 71:063c45e99578 72 oldValues[0] = data[0];
xinlei 71:063c45e99578 73 oldValues[1] = data[1];
xinlei 71:063c45e99578 74 sendingTimer.reset();
xinlei 72:c5709ae7b193 75 aInfo("Signal quality measurement sent.\r\n");
Cumulocity 41:804f6a0bda26 76 return true;
Cumulocity 41:804f6a0bda26 77 }