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/TemperatureMeasurement.cpp@90:423177e8a401, 2015-03-20 (annotated)

Committer:
xinlei
Date:
Fri Mar 20 13:55:21 2015 +0000
Revision:
90:423177e8a401
Parent:
85:b49c4cfecc43
Child:
92:0acd11870c6a
Code refactoring to ease coupling

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 90:423177e8a401 12 TemperatureMeasurement::TemperatureMeasurement(AbstractSmartRest& client, SmartRestTemplate& tpl,
xinlei 90:423177e8a401 13 long& deviceId, DeviceIO& io, DeviceInfo& deviceInfo, DisplayInfo& displayInfo) :
xinlei 90:423177e8a401 14 _deviceId(deviceId),
xinlei 90:423177e8a401 15 _tpl(tpl),
Cumulocity 41:804f6a0bda26 16 _client(client),
xinlei 90:423177e8a401 17 _sensor(D14,D15),
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 84:5dc5a50e4b06 47 extern bool lastSensorReadingSent;
xinlei 85:b49c4cfecc43 48 float 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 84:5dc5a50e4b06 52 if (lastSensorReadingSent) {
xinlei 84:5dc5a50e4b06 53 _io.lcdPrint(_displayInfo.getFirstLine(), _displayInfo.getSecondLine());
xinlei 84:5dc5a50e4b06 54 lastSensorReadingSent=false;
xinlei 84:5dc5a50e4b06 55 }
xinlei 73:313975bfec96 56 aDebug("Similar temperature readings found, no sending!\r\n");
xinlei 71:063c45e99578 57 return true;
xinlei 71:063c45e99578 58 } else {
xinlei 77:f6717e4eccc4 59 aDebug("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 82:ca7430f50b2b 64 snprintf(status, 25, "Sending Temp %.2f", data);
xinlei 83:3c8ceb12b773 65 _io.lcdPrint(_displayInfo.getFirstLine(), _displayInfo.getSecondLine(), 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 76:b07effe83fb8 75 aWarning("Sending temperature readings 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 74:ca3001991fdc 81 aInfo("Temperature readings sent in %.1f.\r\n", t_end-t_start);
xinlei 71:063c45e99578 82 oldValue = data;
xinlei 71:063c45e99578 83 sendingTimer.reset();
xinlei 84:5dc5a50e4b06 84 lastSensorReadingSent=true;
Cumulocity 41:804f6a0bda26 85 return true;
Cumulocity 41:804f6a0bda26 86 }