Cumulocity Official / Mbed 2 deprecated MbedSmartRestMain Featured

Official reference client implementation for Cumulocity SmartREST on u-blox C027.

Dependencies:   C027_Support C12832 LM75B MMA7660 MbedSmartRest mbed-rtos mbed

Fork of MbedSmartRestMain by Vincent Wochnik

measurement/SignalQualityMeasurement.cpp@84:3c8ceb12b773, 2015-03-06 (annotated)

Committer:
xinlei
Date:
Fri Mar 06 11:10:48 2015 +0000
Revision:
84:3c8ceb12b773
Parent:
82:ca7430f50b2b
Child:
85:5dc5a50e4b06
DisplayInfo: added second line for storing signal quality.

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 82:ca7430f50b2b 8 #define THRESHOLD_PERCENT_SIG 0.06 // Percentage cut-off for avoiding sending similar signal sensor data.
xinlei 73:313975bfec96 9 // Time interval for forcing a sending even if analog sensor readings are constantly similar (in seconds).
xinlei 73:313975bfec96 10 #define TIME_LIMIT_SIG 900
xinlei 71:063c45e99578 11
xinlei 73:313975bfec96 12 SignalQualityMeasurement::SignalQualityMeasurement(AbstractSmartRest& client, SmartRestTemplate& tpl, long& deviceId,
xinlei 82:ca7430f50b2b 13 DeviceInfo& deviceInfo, DeviceIO& io, DisplayInfo& displayInfo) :
xinlei 74:ca3001991fdc 14 _deviceId(deviceId),
Cumulocity 41:804f6a0bda26 15 _tpl(tpl),
xinlei 74:ca3001991fdc 16 _client(client),
xinlei 73:313975bfec96 17 _deviceInfo(deviceInfo),
xinlei 73:313975bfec96 18 _io(io),
xinlei 82:ca7430f50b2b 19 _displayInfo(displayInfo)
Cumulocity 41:804f6a0bda26 20 {
Cumulocity 41:804f6a0bda26 21 _init = false;
xinlei 71:063c45e99578 22 oldValues[0] = 0;
xinlei 71:063c45e99578 23 oldValues[1] = 0;
xinlei 71:063c45e99578 24 sendingTimer.start();
Cumulocity 41:804f6a0bda26 25 }
Cumulocity 41:804f6a0bda26 26
Cumulocity 41:804f6a0bda26 27 bool SignalQualityMeasurement::init()
Cumulocity 41:804f6a0bda26 28 {
Cumulocity 41:804f6a0bda26 29 if (_init)
Cumulocity 41:804f6a0bda26 30 return false;
Cumulocity 41:804f6a0bda26 31
Cumulocity 41:804f6a0bda26 32 // Insert measurement
Cumulocity 41:804f6a0bda26 33 // USAGE: 104,<DEVICE/ID>,<RSSI>,<BER>
Cumulocity 41:804f6a0bda26 34 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 35 return false;
Cumulocity 41:804f6a0bda26 36
Cumulocity 41:804f6a0bda26 37 _init = true;
Cumulocity 41:804f6a0bda26 38 return true;
Cumulocity 41:804f6a0bda26 39 }
Cumulocity 41:804f6a0bda26 40
Cumulocity 41:804f6a0bda26 41 bool SignalQualityMeasurement::run()
Cumulocity 41:804f6a0bda26 42 {
xinlei 77:f6717e4eccc4 43 DeviceInfo::SignalQuality *signalQuality;
Cumulocity 41:804f6a0bda26 44 if ((signalQuality = _deviceInfo.signalQuality()) == NULL)
Cumulocity 41:804f6a0bda26 45 return false;
xinlei 77:f6717e4eccc4 46
xinlei 77:f6717e4eccc4 47 int data[2] = {signalQuality->rssi, signalQuality->ber};
xinlei 71:063c45e99578 48 if (abs(oldValues[0]-data[0]) <= abs(oldValues[0])*THRESHOLD_PERCENT_SIG &&
xinlei 71:063c45e99578 49 abs(oldValues[1]-data[1]) <= abs(oldValues[1])*THRESHOLD_PERCENT_SIG) {
xinlei 71:063c45e99578 50 if (sendingTimer.read() < TIME_LIMIT_SIG) {
xinlei 84:3c8ceb12b773 51 _io.lcdPrint(_displayInfo.getFirstLine(), _displayInfo.getSecondLine());
xinlei 73:313975bfec96 52 aDebug("Similar signal readings found, no sending!\r\n");
xinlei 71:063c45e99578 53 return true;
xinlei 71:063c45e99578 54 } else {
xinlei 77:f6717e4eccc4 55 aDebug("Signal sensor timed out at %f s, a sending is forced.\r\n", sendingTimer.read());
xinlei 77:f6717e4eccc4 56 }
xinlei 77:f6717e4eccc4 57 }
xinlei 77:f6717e4eccc4 58
xinlei 73:313975bfec96 59 char status[25] = {0};
xinlei 77:f6717e4eccc4 60 snprintf(status, 25, "Sending dBm %d,%d", data[0], data[1]);
xinlei 84:3c8ceb12b773 61 _io.lcdPrint(_displayInfo.getFirstLine(), _displayInfo.getSecondLine(), status);
Cumulocity 41:804f6a0bda26 62 ComposedRecord record;
Cumulocity 41:804f6a0bda26 63 IntegerValue msgId(104);
Cumulocity 41:804f6a0bda26 64 IntegerValue devId(_deviceId);
Cumulocity 41:804f6a0bda26 65 IntegerValue rssi(signalQuality->rssi);
Cumulocity 41:804f6a0bda26 66 IntegerValue ber(signalQuality->ber);
Cumulocity 41:804f6a0bda26 67 if ((!record.add(msgId)) || (!record.add(devId)) || (!record.add(rssi)) || (!record.add(ber)))
Cumulocity 41:804f6a0bda26 68 return false;
Cumulocity 41:804f6a0bda26 69
xinlei 73:313975bfec96 70 float t_start = sendingTimer.read();
Cumulocity 41:804f6a0bda26 71 if (_client.send(record) != SMARTREST_SUCCESS) {
xinlei 76:b07effe83fb8 72 aWarning("Sending signal readings failed.\r\n");
Cumulocity 41:804f6a0bda26 73 _client.stop();
Cumulocity 41:804f6a0bda26 74 return false;
Cumulocity 41:804f6a0bda26 75 }
xinlei 73:313975bfec96 76 float t_end = sendingTimer.read();
Cumulocity 41:804f6a0bda26 77 _client.stop();
xinlei 74:ca3001991fdc 78 aInfo("Signal readings sent in %.1f.\r\n", t_end-t_start);
xinlei 71:063c45e99578 79 oldValues[0] = data[0];
xinlei 71:063c45e99578 80 oldValues[1] = data[1];
xinlei 71:063c45e99578 81 sendingTimer.reset();
Cumulocity 41:804f6a0bda26 82 return true;
Cumulocity 41:804f6a0bda26 83 }