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@100:47ea098f8a47, 2015-05-07 (annotated)

Committer:
xinlei
Date:
Thu May 07 13:56:19 2015 +0000
Revision:
100:47ea098f8a47
Parent:
96:5dfdc8568e9f 
prepare for v2.1rc3.

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 96:5dfdc8568e9f 6 #include "LCDDisplay.h"
xinlei 72:c5709ae7b193 7 #include "logging.h"
Cumulocity 41:804f6a0bda26 8
xinlei 76:b07effe83fb8 9 #define THRESHOLD_PERCENT_TEMP 0.02 // Percentage cut-off for avoiding sending similar temperature sensor data.
xinlei 73:313975bfec96 10 // Time interval for forcing a sending even if analog sensor readings are constantly similar (in seconds).
xinlei 73:313975bfec96 11 #define TIME_LIMIT_TEMP 900
xinlei 71:063c45e99578 12
xinlei 96:5dfdc8568e9f 13 TemperatureMeasurement::TemperatureMeasurement(AbstractSmartRest& client,
xinlei 100:47ea098f8a47 14 SmartRestTemplate& tpl, DeviceInfo& deviceInfo) :
xinlei 91:423177e8a401 15 _tpl(tpl),
Cumulocity 41:804f6a0bda26 16 _client(client),
xinlei 91:423177e8a401 17 _sensor(D14,D15),
xinlei 73:313975bfec96 18 oldValue(0),
xinlei 96:5dfdc8568e9f 19 _deviceInfo(deviceInfo)
Cumulocity 41:804f6a0bda26 20 {
Cumulocity 41:804f6a0bda26 21 _init = false;
xinlei 94:61d44636f020 22 t_start = time(NULL);
Cumulocity 41:804f6a0bda26 23 }
Cumulocity 41:804f6a0bda26 24
Cumulocity 41:804f6a0bda26 25 bool TemperatureMeasurement::init()
Cumulocity 41:804f6a0bda26 26 {
Cumulocity 41:804f6a0bda26 27 if (_init)
Cumulocity 41:804f6a0bda26 28 return false;
Cumulocity 41:804f6a0bda26 29
Cumulocity 41:804f6a0bda26 30 // Insert measurement
Cumulocity 41:804f6a0bda26 31 // USAGE: 105,<DEVICE/ID>,<TEMPERATURE>
Cumulocity 41:804f6a0bda26 32 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 33 return false;
Cumulocity 41:804f6a0bda26 34
Cumulocity 41:804f6a0bda26 35 _open = _sensor.open();
Cumulocity 41:804f6a0bda26 36 _init = true;
Cumulocity 41:804f6a0bda26 37 return true;
Cumulocity 41:804f6a0bda26 38 }
Cumulocity 41:804f6a0bda26 39
Cumulocity 41:804f6a0bda26 40 bool TemperatureMeasurement::run()
Cumulocity 41:804f6a0bda26 41 {
Cumulocity 41:804f6a0bda26 42 if (!_open)
Cumulocity 41:804f6a0bda26 43 return false;
Cumulocity 41:804f6a0bda26 44
xinlei 86:b49c4cfecc43 45 float data = _sensor.temp();
xinlei 77:f6717e4eccc4 46
xinlei 71:063c45e99578 47 if (abs(oldValue-data) <= abs(oldValue)*THRESHOLD_PERCENT_TEMP) {
xinlei 94:61d44636f020 48 time_t t_interval = time(NULL) - t_start;
xinlei 94:61d44636f020 49 if (t_interval < TIME_LIMIT_TEMP) {
xinlei 96:5dfdc8568e9f 50 if (strcmp(LCDDisplay::inst().getThirdLine(), "")) {
xinlei 96:5dfdc8568e9f 51 LCDDisplay::inst().setThirdLine("");
xinlei 85:5dc5a50e4b06 52 }
xinlei 71:063c45e99578 53 return true;
xinlei 71:063c45e99578 54 } else {
xinlei 94:61d44636f020 55 aDebug("Temp: Timeout at %d s.\n", t_interval);
xinlei 71:063c45e99578 56 }
xinlei 71:063c45e99578 57 }
xinlei 71:063c45e99578 58
xinlei 73:313975bfec96 59 char status[25] = {0};
xinlei 93:0acd11870c6a 60 snprintf(status, 25, "Send Temp %.2f", data);
xinlei 96:5dfdc8568e9f 61 LCDDisplay::inst().setThirdLine(status);
Cumulocity 41:804f6a0bda26 62 ComposedRecord record;
Cumulocity 41:804f6a0bda26 63 IntegerValue msgId(105);
xinlei 100:47ea098f8a47 64 IntegerValue devId(deviceID);
xinlei 71:063c45e99578 65 FloatValue temperature(data, 1);
Cumulocity 41:804f6a0bda26 66 if ((!record.add(msgId)) || (!record.add(devId)) || (!record.add(temperature)))
Cumulocity 41:804f6a0bda26 67 return false;
Cumulocity 41:804f6a0bda26 68
xinlei 94:61d44636f020 69 time_t t0 = time(NULL);
Cumulocity 41:804f6a0bda26 70 if (_client.send(record) != SMARTREST_SUCCESS) {
xinlei 93:0acd11870c6a 71 aWarning("Temp: Send failed.\n");
Cumulocity 41:804f6a0bda26 72 _client.stop();
Cumulocity 41:804f6a0bda26 73 return false;
Cumulocity 41:804f6a0bda26 74 }
xinlei 94:61d44636f020 75 time_t t1 = time(NULL);
Cumulocity 41:804f6a0bda26 76 _client.stop();
xinlei 94:61d44636f020 77 aDebug("Temp: Sent in %d s.\n", t1-t0);
xinlei 71:063c45e99578 78 oldValue = data;
xinlei 94:61d44636f020 79 t_start = time(NULL);
Cumulocity 41:804f6a0bda26 80 return true;
Cumulocity 41:804f6a0bda26 81 }