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
measurement/TemperatureMeasurement.cpp
- Committer:
- xinlei
- Date:
- 2015-05-07
- Revision:
- 100:47ea098f8a47
- Parent:
- 96:5dfdc8568e9f
File content as of revision 100:47ea098f8a47:
#include "TemperatureMeasurement.h" #include "ComposedRecord.h" #include "CharValue.h" #include "IntegerValue.h" #include "FloatValue.h" #include "LCDDisplay.h" #include "logging.h" #define THRESHOLD_PERCENT_TEMP 0.02 // Percentage cut-off for avoiding sending similar temperature sensor data. // Time interval for forcing a sending even if analog sensor readings are constantly similar (in seconds). #define TIME_LIMIT_TEMP 900 TemperatureMeasurement::TemperatureMeasurement(AbstractSmartRest& client, SmartRestTemplate& tpl, DeviceInfo& deviceInfo) : _tpl(tpl), _client(client), _sensor(D14,D15), oldValue(0), _deviceInfo(deviceInfo) { _init = false; t_start = time(NULL); } bool TemperatureMeasurement::init() { if (_init) return false; // Insert measurement // USAGE: 105,<DEVICE/ID>,<TEMPERATURE> 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")) return false; _open = _sensor.open(); _init = true; return true; } bool TemperatureMeasurement::run() { if (!_open) return false; float data = _sensor.temp(); if (abs(oldValue-data) <= abs(oldValue)*THRESHOLD_PERCENT_TEMP) { time_t t_interval = time(NULL) - t_start; if (t_interval < TIME_LIMIT_TEMP) { if (strcmp(LCDDisplay::inst().getThirdLine(), "")) { LCDDisplay::inst().setThirdLine(""); } return true; } else { aDebug("Temp: Timeout at %d s.\n", t_interval); } } char status[25] = {0}; snprintf(status, 25, "Send Temp %.2f", data); LCDDisplay::inst().setThirdLine(status); ComposedRecord record; IntegerValue msgId(105); IntegerValue devId(deviceID); FloatValue temperature(data, 1); if ((!record.add(msgId)) || (!record.add(devId)) || (!record.add(temperature))) return false; time_t t0 = time(NULL); if (_client.send(record) != SMARTREST_SUCCESS) { aWarning("Temp: Send failed.\n"); _client.stop(); return false; } time_t t1 = time(NULL); _client.stop(); aDebug("Temp: Sent in %d s.\n", t1-t0); oldValue = data; t_start = time(NULL); return true; }