Created
October 5, 2015 13:50
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Example of using Windows Sensor API with location sensors. See (https://msdn.microsoft.com/en-us/library/windows/desktop/dd318953(v=vs.85).aspx)
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#include "stdafx.h" | |
#include <sensorsapi.h> | |
#include <sensors.h> | |
#pragma comment(lib,"sensorsapi.lib") | |
int main() | |
{ | |
ISensorManager* sensorManager = 0; | |
HRESULT hr = 0; | |
CoInitializeEx(0, COINIT_APARTMENTTHREADED); | |
hr = CoCreateInstance(CLSID_SensorManager, 0, CLSCTX_ALL, __uuidof(ISensorManager), (void**)&sensorManager); | |
if (hr != 0 || !sensorManager) | |
{ | |
printf("SensorManager is not initializated.\n"); | |
return -1; | |
} | |
printf("SensorManager is initializated.\n"); | |
ISensorCollection* sensorList = 0; | |
hr = sensorManager->GetSensorsByCategory(SENSOR_CATEGORY_LOCATION, &sensorList); | |
if (hr != 0 || !sensorList) | |
{ | |
printf("Location sensors not exist.\n"); | |
return -1; | |
} | |
hr = sensorManager->RequestPermissions(0, sensorList, TRUE); | |
if (hr != 0) | |
{ | |
printf("No permission for using location sensors.\n"); | |
return -1; | |
} | |
ULONG sensorsCount = 0; | |
hr = sensorList->GetCount(&sensorsCount); | |
if (hr != 0 || !sensorsCount) | |
{ | |
printf("Location sensors not exist.\n"); | |
sensorList->Release(); | |
return -1; | |
} | |
printf("%i sensors found:\n", sensorsCount); | |
for (unsigned int i = 0; i < sensorsCount; i++) | |
{ | |
printf("\n"); | |
ISensor* sensor = 0; | |
hr = sensorList->GetAt(i, &sensor); | |
if (!sensor) | |
continue; | |
BSTR name = 0; | |
hr = sensor->GetFriendlyName(&name); | |
if (hr != 0 || !name) | |
{ | |
continue; | |
} | |
wprintf(L"%i) %s\n", i, name); | |
printf("State: "); | |
SensorState state; | |
hr = sensor->GetState(&state); | |
if (hr != 0) | |
{ | |
continue; | |
} | |
switch (state) | |
{ | |
case SENSOR_STATE_READY || SENSOR_STATE_MIN: | |
wprintf(L"Ready"); | |
break; | |
case SENSOR_STATE_NOT_AVAILABLE: | |
wprintf(L"Not Available"); | |
break; | |
case SENSOR_STATE_INITIALIZING: | |
wprintf(L"Initializing"); | |
break; | |
case SENSOR_STATE_ERROR: | |
wprintf(L"Error"); | |
break; | |
case SENSOR_STATE_ACCESS_DENIED: | |
wprintf(L"Access Denied"); | |
break; | |
case SENSOR_STATE_NO_DATA: | |
wprintf(L"No Data"); | |
break; | |
default: | |
wprintf(L"Unknown"); | |
break; | |
} | |
printf("\n"); | |
if (state != SENSOR_STATE_READY && state != SENSOR_STATE_MIN) { | |
continue; | |
} | |
ISensorDataReport* sensorData = 0; | |
hr = sensor->GetData(&sensorData); | |
if (hr != 0 || !sensorData) | |
{ | |
continue; | |
} | |
IPortableDeviceKeyCollection* keyList = 0; | |
hr = sensor->GetSupportedDataFields(&keyList); | |
if (hr != 0 || !keyList) | |
{ | |
continue; | |
} | |
ULONG keysCount = 0; | |
keyList->GetCount(&keysCount); | |
if (hr != 0 || !keysCount) | |
{ | |
continue; | |
} | |
for (unsigned int j = 0; j < keysCount; j++) | |
{ | |
PROPERTYKEY sensorDataKey; | |
keyList->GetAt(j, &sensorDataKey); | |
if (sensorDataKey.fmtid != SENSOR_DATA_TYPE_LOCATION_GUID) | |
{ | |
continue; | |
} | |
// Get the value | |
PROPVARIANT sensorDataValue; | |
sensorData->GetSensorValue(sensorDataKey, &sensorDataValue); | |
if (sensorDataKey == SENSOR_DATA_TYPE_LATITUDE_DEGREES) | |
{ | |
printf("Latitude"); | |
} | |
else if (sensorDataKey == SENSOR_DATA_TYPE_LONGITUDE_DEGREES) | |
{ | |
printf("Longitude"); | |
} | |
else if (sensorDataKey == SENSOR_DATA_TYPE_ALTITUDE_ELLIPSOID_METERS) | |
{ | |
printf("Altitude"); | |
} | |
else if (sensorDataKey == SENSOR_DATA_TYPE_SPEED_KNOTS) | |
{ | |
printf("Speed"); | |
} | |
else if (sensorDataKey == SENSOR_DATA_TYPE_ERROR_RADIUS_METERS) | |
{ | |
printf("Accuracy"); | |
} | |
else if (sensorDataKey == SENSOR_DATA_TYPE_MAGNETIC_HEADING_DEGREES) | |
{ | |
printf("Bearing"); | |
} | |
else | |
{ | |
continue; | |
} | |
printf(" : %f\n", sensorDataValue.dblVal); | |
} | |
keyList->Release(); | |
} | |
system("PAUSE"); | |
return 0; | |
} |
Hey , Using the same code to read data from the "u-bolx 7 GPS/GNSS Location Sensor " . But everytime I am getting the sensor state as initialising. So is it the problem with sensor initialisation ? If yes how to initialise this sensor ?
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Hey, do you have an idea why my sensor (Sierra Wireless Location Sensor) is detected properly but sending absolutely no data when accessed via your example?
Cheers,
Philipp