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@85:5dc5a50e4b06, 2015-03-06 (annotated)

Committer:
xinlei
Date:
Fri Mar 06 11:20:07 2015 +0000
Revision:
85:5dc5a50e4b06
Parent:
84:3c8ceb12b773
Child:
86:b49c4cfecc43
Measurements: Removed LCD display flashing when do not send sensor readings.

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 85:5dc5a50e4b06 43 extern bool lastSensorReadingSent;
xinlei 77:f6717e4eccc4 44 DeviceInfo::SignalQuality *signalQuality;
Cumulocity 41:804f6a0bda26 45 if ((signalQuality = _deviceInfo.signalQuality()) == NULL)
Cumulocity 41:804f6a0bda26 46 return false;
xinlei 77:f6717e4eccc4 47
xinlei 77:f6717e4eccc4 48 int data[2] = {signalQuality->rssi, signalQuality->ber};
xinlei 71:063c45e99578 49 if (abs(oldValues[0]-data[0]) <= abs(oldValues[0])*THRESHOLD_PERCENT_SIG &&
xinlei 71:063c45e99578 50 abs(oldValues[1]-data[1]) <= abs(oldValues[1])*THRESHOLD_PERCENT_SIG) {
xinlei 71:063c45e99578 51 if (sendingTimer.read() < TIME_LIMIT_SIG) {
xinlei 85:5dc5a50e4b06 52 if (lastSensorReadingSent) {
xinlei 85:5dc5a50e4b06 53 _io.lcdPrint(_displayInfo.getFirstLine(), _displayInfo.getSecondLine());
xinlei 85:5dc5a50e4b06 54 lastSensorReadingSent=false;
xinlei 85:5dc5a50e4b06 55 }
xinlei 73:313975bfec96 56 aDebug("Similar signal readings found, no sending!\r\n");
xinlei 71:063c45e99578 57 return true;
xinlei 71:063c45e99578 58 } else {
xinlei 77:f6717e4eccc4 59 aDebug("Signal sensor timed out at %f s, a sending is forced.\r\n", sendingTimer.read());
xinlei 77:f6717e4eccc4 60 }
xinlei 77:f6717e4eccc4 61 }
xinlei 77:f6717e4eccc4 62
xinlei 73:313975bfec96 63 char status[25] = {0};
xinlei 77:f6717e4eccc4 64 snprintf(status, 25, "Sending dBm %d,%d", data[0], data[1]);
xinlei 84:3c8ceb12b773 65 _io.lcdPrint(_displayInfo.getFirstLine(), _displayInfo.getSecondLine(), status);
Cumulocity 41:804f6a0bda26 66 ComposedRecord record;
Cumulocity 41:804f6a0bda26 67 IntegerValue msgId(104);
Cumulocity 41:804f6a0bda26 68 IntegerValue devId(_deviceId);
Cumulocity 41:804f6a0bda26 69 IntegerValue rssi(signalQuality->rssi);
Cumulocity 41:804f6a0bda26 70 IntegerValue ber(signalQuality->ber);
Cumulocity 41:804f6a0bda26 71 if ((!record.add(msgId)) || (!record.add(devId)) || (!record.add(rssi)) || (!record.add(ber)))
Cumulocity 41:804f6a0bda26 72 return false;
Cumulocity 41:804f6a0bda26 73
xinlei 73:313975bfec96 74 float t_start = sendingTimer.read();
Cumulocity 41:804f6a0bda26 75 if (_client.send(record) != SMARTREST_SUCCESS) {
xinlei 76:b07effe83fb8 76 aWarning("Sending signal readings failed.\r\n");
Cumulocity 41:804f6a0bda26 77 _client.stop();
Cumulocity 41:804f6a0bda26 78 return false;
Cumulocity 41:804f6a0bda26 79 }
xinlei 73:313975bfec96 80 float t_end = sendingTimer.read();
Cumulocity 41:804f6a0bda26 81 _client.stop();
xinlei 74:ca3001991fdc 82 aInfo("Signal readings sent in %.1f.\r\n", t_end-t_start);
xinlei 71:063c45e99578 83 oldValues[0] = data[0];
xinlei 71:063c45e99578 84 oldValues[1] = data[1];
xinlei 71:063c45e99578 85 sendingTimer.reset();
xinlei 85:5dc5a50e4b06 86 lastSensorReadingSent=true;
Cumulocity 41:804f6a0bda26 87 return true;
Cumulocity 41:804f6a0bda26 88 }