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/TemperatureMeasurement.cpp@73:313975bfec96, 2015-02-17 (annotated)

Committer:
xinlei
Date:
Tue Feb 17 16:31:30 2015 +0000
Revision:
73:313975bfec96
Parent:
72:c5709ae7b193
Child:
74:ca3001991fdc
measurements: displaying concrete information on LCD display, timing of sending operation.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Cumulocity 41:804f6a0bda26 1 #include "TemperatureMeasurement.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_TEMP 0.05 // Percentage cut-off for avoiding sending similar temperature 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_TEMP 900
xinlei 71:063c45e99578 11
xinlei 73:313975bfec96 12 TemperatureMeasurement::TemperatureMeasurement(AbstractSmartRest& client, SmartRestTemplate& tpl, long& deviceId, LM75B& sensor,
xinlei 73:313975bfec96 13 DeviceIO& io, DeviceInfo& deviceInfo, DeviceBootstrap& bootstrap) :
Cumulocity 41:804f6a0bda26 14 _client(client),
Cumulocity 41:804f6a0bda26 15 _tpl(tpl),
Cumulocity 41:804f6a0bda26 16 _deviceId(deviceId),
xinlei 71:063c45e99578 17 _sensor(sensor),
xinlei 73:313975bfec96 18 oldValue(0),
xinlei 73:313975bfec96 19 _io(io),
xinlei 73:313975bfec96 20 _deviceInfo(deviceInfo),
xinlei 73:313975bfec96 21 _bootstrap(bootstrap)
Cumulocity 41:804f6a0bda26 22 {
Cumulocity 41:804f6a0bda26 23 _init = false;
xinlei 71:063c45e99578 24 sendingTimer.start();
Cumulocity 41:804f6a0bda26 25 }
Cumulocity 41:804f6a0bda26 26
Cumulocity 41:804f6a0bda26 27 bool TemperatureMeasurement::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: 105,<DEVICE/ID>,<TEMPERATURE>
Cumulocity 41:804f6a0bda26 34 if (!_tpl.add("10,105,POST,/measurement/measurements,application/vnd.com.nsn.cumulocity.measurement+json,application/vnd.com.nsn.cumulocity.measurement+json,%%,NOW UNSIGNED NUMBER,\"{\"\"time\"\":\"\"%%\"\",\"\"source\"\":{\"\"id\"\":\"\"%%\"\"},\"\"type\"\":\"\"c8y_TemperatureMeasurement\"\",\"\"c8y_TemperatureMeasurement\"\":{\"\"T\"\":{\"\"value\"\":%%,\"\"unit\"\":\"\"C\"\"}}}\"\r\n"))
Cumulocity 41:804f6a0bda26 35 return false;
Cumulocity 41:804f6a0bda26 36
Cumulocity 41:804f6a0bda26 37 _open = _sensor.open();
Cumulocity 41:804f6a0bda26 38 _init = true;
Cumulocity 41:804f6a0bda26 39 return true;
Cumulocity 41:804f6a0bda26 40 }
Cumulocity 41:804f6a0bda26 41
Cumulocity 41:804f6a0bda26 42 bool TemperatureMeasurement::run()
Cumulocity 41:804f6a0bda26 43 {
Cumulocity 41:804f6a0bda26 44 if (!_open)
Cumulocity 41:804f6a0bda26 45 return false;
Cumulocity 41:804f6a0bda26 46
xinlei 71:063c45e99578 47 float data = 0;
xinlei 71:063c45e99578 48 data = _sensor.temp();
xinlei 73:313975bfec96 49 char tenant[25] = {0};
xinlei 73:313975bfec96 50 snprintf(tenant, 25, "Tenant: %s", _bootstrap.username());
xinlei 73:313975bfec96 51 char signal[25] = {0};
xinlei 73:313975bfec96 52 snprintf(signal, 25, "Network: %d dBm", _deviceInfo.signalQuality()->rssi);
xinlei 71:063c45e99578 53 if (abs(oldValue-data) <= abs(oldValue)*THRESHOLD_PERCENT_TEMP) {
xinlei 71:063c45e99578 54 if (sendingTimer.read() < TIME_LIMIT_TEMP) {
xinlei 73:313975bfec96 55 aDebug("Similar temperature readings found, no sending!\r\n");
xinlei 73:313975bfec96 56 _io.lcdPrint(tenant, signal);
xinlei 71:063c45e99578 57 return true;
xinlei 71:063c45e99578 58 } else {
xinlei 73:313975bfec96 59 aDebug("Sending timer of temperature sensor timed out at %f s, a sending is forced.\r\n", sendingTimer.read());
xinlei 71:063c45e99578 60 }
xinlei 71:063c45e99578 61 }
xinlei 71:063c45e99578 62
xinlei 73:313975bfec96 63 char status[25] = {0};
xinlei 73:313975bfec96 64 snprintf(status, 25, "Sending Temp %.1f", data);
xinlei 73:313975bfec96 65 _io.lcdPrint(tenant, signal, status);
Cumulocity 41:804f6a0bda26 66 ComposedRecord record;
Cumulocity 41:804f6a0bda26 67 IntegerValue msgId(105);
Cumulocity 41:804f6a0bda26 68 IntegerValue devId(_deviceId);
xinlei 71:063c45e99578 69 FloatValue temperature(data, 1);
Cumulocity 41:804f6a0bda26 70 if ((!record.add(msgId)) || (!record.add(devId)) || (!record.add(temperature)))
Cumulocity 41:804f6a0bda26 71 return false;
Cumulocity 41:804f6a0bda26 72
xinlei 73:313975bfec96 73 float t_start = sendingTimer.read();
Cumulocity 41:804f6a0bda26 74 if (_client.send(record) != SMARTREST_SUCCESS) {
xinlei 72:c5709ae7b193 75 aError("Signal measurement failed.\r\n");
Cumulocity 41:804f6a0bda26 76 _client.stop();
Cumulocity 41:804f6a0bda26 77 return false;
Cumulocity 41:804f6a0bda26 78 }
xinlei 73:313975bfec96 79 float t_end = sendingTimer.read();
Cumulocity 41:804f6a0bda26 80 _client.stop();
xinlei 73:313975bfec96 81 aInfo("Acceleration readings sent in %.1f.\r\n", t_end-t_start);
xinlei 71:063c45e99578 82 oldValue = data;
xinlei 71:063c45e99578 83 sendingTimer.reset();
Cumulocity 41:804f6a0bda26 84 return true;
Cumulocity 41:804f6a0bda26 85 }