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@74:ca3001991fdc, 2015-02-18 (annotated)

Committer:
xinlei
Date:
Wed Feb 18 10:17:29 2015 +0000
Revision:
74:ca3001991fdc
Parent:
73:313975bfec96
Child:
76:b07effe83fb8
formatting: minor formatting style 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"
xinlei 72:c5709ae7b193 6 #include "logging.h"
Cumulocity 41:804f6a0bda26 7
xinlei 74:ca3001991fdc 8 #define THRESHOLD_PERCENT_SIG 0.01 // 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 73:313975bfec96 13 DeviceInfo& deviceInfo, DeviceIO& io, DeviceBootstrap& bootstrap) :
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 73:313975bfec96 19 _bootstrap(bootstrap)
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 {
Cumulocity 41:804f6a0bda26 43 DeviceInfo::SignalQuality *signalQuality;
Cumulocity 41:804f6a0bda26 44
Cumulocity 41:804f6a0bda26 45 if ((signalQuality = _deviceInfo.signalQuality()) == NULL)
Cumulocity 41:804f6a0bda26 46 return false;
Cumulocity 41:804f6a0bda26 47
xinlei 71:063c45e99578 48 float data[2] = {0, 0};
xinlei 71:063c45e99578 49 data[0] = signalQuality->rssi;
xinlei 71:063c45e99578 50 data[1] = signalQuality->ber;
xinlei 73:313975bfec96 51 char tenant[25] = {0};
xinlei 74:ca3001991fdc 52 const char* user= _bootstrap.username();
xinlei 74:ca3001991fdc 53 int len = strchr(user, '/')-user+1+8; // 8: length of "Tenant: ";
xinlei 74:ca3001991fdc 54 len = len <= 25 ? len : 25;
xinlei 74:ca3001991fdc 55 snprintf(tenant, len, "Tenant: %s", user);
xinlei 73:313975bfec96 56 char signal[25] = {0};
xinlei 74:ca3001991fdc 57 if (_deviceInfo.signalQuality())
xinlei 74:ca3001991fdc 58 snprintf(signal, 25, "Network: %d dBm", _deviceInfo.signalQuality()->rssi);
xinlei 74:ca3001991fdc 59 else
xinlei 74:ca3001991fdc 60 strncpy(signal, "Network: ? dBm", 25);
xinlei 71:063c45e99578 61 if (abs(oldValues[0]-data[0]) <= abs(oldValues[0])*THRESHOLD_PERCENT_SIG &&
xinlei 71:063c45e99578 62 abs(oldValues[1]-data[1]) <= abs(oldValues[1])*THRESHOLD_PERCENT_SIG) {
xinlei 71:063c45e99578 63 if (sendingTimer.read() < TIME_LIMIT_SIG) {
xinlei 74:ca3001991fdc 64 _io.lcdPrint(tenant, signal);
xinlei 73:313975bfec96 65 aDebug("Similar signal readings found, no sending!\r\n");
xinlei 71:063c45e99578 66 return true;
xinlei 71:063c45e99578 67 } else {
xinlei 73:313975bfec96 68 aDebug("Sending timer of signal sensor timed out at %f s, a sending is forced.\r\n", sendingTimer.read());
xinlei 71:063c45e99578 69 }
xinlei 71:063c45e99578 70 }
xinlei 71:063c45e99578 71
xinlei 73:313975bfec96 72 char status[25] = {0};
xinlei 74:ca3001991fdc 73 snprintf(status, 25, "Sending dBm %d,%d", (int)data[0], (int)data[1]);
xinlei 73:313975bfec96 74 _io.lcdPrint(tenant, signal, status);
Cumulocity 41:804f6a0bda26 75 ComposedRecord record;
Cumulocity 41:804f6a0bda26 76 IntegerValue msgId(104);
Cumulocity 41:804f6a0bda26 77 IntegerValue devId(_deviceId);
Cumulocity 41:804f6a0bda26 78 IntegerValue rssi(signalQuality->rssi);
Cumulocity 41:804f6a0bda26 79 IntegerValue ber(signalQuality->ber);
Cumulocity 41:804f6a0bda26 80 if ((!record.add(msgId)) || (!record.add(devId)) || (!record.add(rssi)) || (!record.add(ber)))
Cumulocity 41:804f6a0bda26 81 return false;
Cumulocity 41:804f6a0bda26 82
xinlei 73:313975bfec96 83 float t_start = sendingTimer.read();
Cumulocity 41:804f6a0bda26 84 if (_client.send(record) != SMARTREST_SUCCESS) {
xinlei 72:c5709ae7b193 85 aError("Signal measurement failed.\r\n");
Cumulocity 41:804f6a0bda26 86 _client.stop();
Cumulocity 41:804f6a0bda26 87 return false;
Cumulocity 41:804f6a0bda26 88 }
xinlei 73:313975bfec96 89 float t_end = sendingTimer.read();
Cumulocity 41:804f6a0bda26 90 _client.stop();
xinlei 74:ca3001991fdc 91 aInfo("Signal readings sent in %.1f.\r\n", t_end-t_start);
xinlei 71:063c45e99578 92 oldValues[0] = data[0];
xinlei 71:063c45e99578 93 oldValues[1] = data[1];
xinlei 71:063c45e99578 94 sendingTimer.reset();
Cumulocity 41:804f6a0bda26 95 return true;
Cumulocity 41:804f6a0bda26 96 }