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/SignalQualityMeasurement.cpp
- Committer:
- xinlei
- Date:
- 2015-05-07
- Revision:
- 100:47ea098f8a47
- Parent:
- 96:5dfdc8568e9f
File content as of revision 100:47ea098f8a47:
#include "SignalQualityMeasurement.h" #include "ComposedRecord.h" #include "CharValue.h" #include "IntegerValue.h" #include "FloatValue.h" #include "LCDDisplay.h" #include "logging.h" #define THRESHOLD_PERCENT_SIG 0.06 // Percentage cut-off for avoiding sending similar signal sensor data. // Time interval for forcing a sending even if analog sensor readings are constantly similar (in seconds). #define TIME_LIMIT_SIG 900 SignalQualityMeasurement::SignalQualityMeasurement(AbstractSmartRest& client, SmartRestTemplate& tpl, DeviceInfo& deviceInfo) : _tpl(tpl), _client(client), _deviceInfo(deviceInfo) { _init = false; oldValues[0] = 0; oldValues[1] = 0; t_start = time(NULL); } bool SignalQualityMeasurement::init() { if (_init) return false; // Insert measurement // USAGE: 104,<DEVICE/ID>,<RSSI>,<BER> if (!_tpl.add("10,104,POST,/measurement/measurements,application/vnd.com.nsn.cumulocity.measurement+json,application/vnd.com.nsn.cumulocity.measurement+json,%%,NOW UNSIGNED NUMBER UNSIGNED,\"{\"\"time\"\":\"\"%%\"\",\"\"source\"\":{\"\"id\"\":\"\"%%\"\"},\"\"type\"\":\"\"c8y_SignalStrength\"\",\"\"c8y_SignalStrength\"\":{\"\"rssi\"\":{\"\"value\"\":%%,\"\"unit\"\":\"\"dBm\"\"},\"\"ber\"\":{\"\"value\"\":%%,\"\"unit\"\":\"\"%\"\"}}}\"\r\n")) return false; _init = true; return true; } bool SignalQualityMeasurement::run() { static char signal[25] = {0}; DeviceInfo::SignalQuality *signalQuality; if ((signalQuality = _deviceInfo.signalQuality()) == NULL) return false; if (signalQuality && signalQuality->rssi) snprintf(signal, sizeof(signal), "Network: %d dBm", signalQuality->rssi); else strncpy(signal, "Network: no coverage", sizeof(signal)); if (strcmp(LCDDisplay::inst().getSecondLine(), signal)) { LCDDisplay::inst().setSecondLine(signal); } int data[2] = {signalQuality->rssi, signalQuality->ber}; if (abs(oldValues[0]-data[0]) <= abs(oldValues[0])*THRESHOLD_PERCENT_SIG && abs(oldValues[1]-data[1]) <= abs(oldValues[1])*THRESHOLD_PERCENT_SIG) { time_t t_interval = time(NULL) - t_start; if (t_interval < TIME_LIMIT_SIG) { if (strcmp(LCDDisplay::inst().getThirdLine(), "")) { LCDDisplay::inst().setThirdLine(""); } return true; } else { aDebug("Signal: Timeout at %d s.\n", t_interval); } } char status[25] = {0}; snprintf(status, 25, "Send dBm %d,%d", data[0], data[1]); LCDDisplay::inst().setThirdLine(status); ComposedRecord record; IntegerValue msgId(104); IntegerValue devId(deviceID); IntegerValue rssi(signalQuality->rssi); IntegerValue ber(signalQuality->ber); if ((!record.add(msgId)) || (!record.add(devId)) || (!record.add(rssi)) || (!record.add(ber))) return false; time_t t0 = time(NULL); if (_client.send(record) != SMARTREST_SUCCESS) { aWarning("Signal: Send failed.\n"); _client.stop(); return false; } time_t t1 = time(NULL); _client.stop(); aDebug("Signal: Sent in %d s.\n", t1-t0); oldValues[0] = data[0]; oldValues[1] = data[1]; t_start = time(NULL); return true; }