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@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 "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 76:b07effe83fb8 8 #define THRESHOLD_PERCENT_TEMP 0.02 // 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 82:ca7430f50b2b 13 DeviceIO& io, DeviceInfo& deviceInfo, DisplayInfo& displayInfo) :
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 82:ca7430f50b2b 21 _displayInfo(displayInfo)
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 77:f6717e4eccc4 49
xinlei 71:063c45e99578 50 if (abs(oldValue-data) <= abs(oldValue)*THRESHOLD_PERCENT_TEMP) {
xinlei 71:063c45e99578 51 if (sendingTimer.read() < TIME_LIMIT_TEMP) {
xinlei 84:3c8ceb12b773 52 _io.lcdPrint(_displayInfo.getFirstLine(), _displayInfo.getSecondLine());
xinlei 73:313975bfec96 53 aDebug("Similar temperature readings found, no sending!\r\n");
xinlei 71:063c45e99578 54 return true;
xinlei 71:063c45e99578 55 } else {
xinlei 77:f6717e4eccc4 56 aDebug("Temperature sensor timed out at %f s, a sending is forced.\r\n", sendingTimer.read());
xinlei 71:063c45e99578 57 }
xinlei 71:063c45e99578 58 }
xinlei 71:063c45e99578 59
xinlei 73:313975bfec96 60 char status[25] = {0};
xinlei 82:ca7430f50b2b 61 snprintf(status, 25, "Sending Temp %.2f", data);
xinlei 84:3c8ceb12b773 62 _io.lcdPrint(_displayInfo.getFirstLine(), _displayInfo.getSecondLine(), status);
Cumulocity 41:804f6a0bda26 63 ComposedRecord record;
Cumulocity 41:804f6a0bda26 64 IntegerValue msgId(105);
Cumulocity 41:804f6a0bda26 65 IntegerValue devId(_deviceId);
xinlei 71:063c45e99578 66 FloatValue temperature(data, 1);
Cumulocity 41:804f6a0bda26 67 if ((!record.add(msgId)) || (!record.add(devId)) || (!record.add(temperature)))
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 temperature 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("Temperature readings sent in %.1f.\r\n", t_end-t_start);
xinlei 71:063c45e99578 79 oldValue = data;
xinlei 71:063c45e99578 80 sendingTimer.reset();
Cumulocity 41:804f6a0bda26 81 return true;
Cumulocity 41:804f6a0bda26 82 }