"Mashing" smartphone GSP and Arduino sensor data

[LordHefekloß]

Hi,

not sure if this is the right subforum, please move if necessary.

I am trying to combine the data from an Arduino Uno R4 that has a dust sensor connected with GPS data from a smartphone. I fail with both possibilities:

1) Reading Arduino data in Phyphox
I cannot get the BLE handshake on phyphox working when creating own experiments with the editor. Bluetooth connection works, but then I get a "Write error on characteristics UUID cddf1002-...." error message. Tried tons on things and yes, PhyphoxBLE::poll() is called 

<bluetooth name="R4_Test" mode="poll" rate="1">
      <config char="cddf1002-30f7-4671-8b43-5e40ba53514a" conversion="float32LittleEndian">TestValue</config>
</bluetooth>

Happy if somebody has a hint, but I would prefer to get #2 working - just mentioning #1 in case #2 is not possible

2) Reading smartphone GSP data from Arduino
In the phyphoxBLE library I do not find any GPS / Location sensor

#define SENSOR_ACCELEROMETER "accelerometer"
#define SENSOR_ACCELEROMETER_WITHOUT_G "linear_acceleration"
#define SENSOR_GYROSCOPE "gyroscope"
#define SENSOR_MAGNETOMETER "magnetometer"
#define SENSOR_PRESSURE "pressure"
#define SENSOR_TEMPERATURE "temperature"
#define SENSOR_LIGHT "light"
#define SENSOR_HUMIDITY "humidity"
#define SENSOR_PROXIMITY "proximity"

Is it impossible to read GPS via phyphox library on the Arduino?

Cheers
B.