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@71:063c45e99578, 2015-02-16 (annotated)

Committer:
xinlei
Date:
Mon Feb 16 09:17:30 2015 +0000
Revision:
71:063c45e99578
Parent:
56:4d6e34f1589d
Child:
72:c5709ae7b193
Various minor bug fixes

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