How to get DataLogger working from Android App - movesense

Question

We are working on an app for the MoveSense that tracks the users movement in some particular cases. However due to our environment the Bluetooth connection can drop out intermittently. To not have any data loss we want to store the sensor data on the MoveSense and read it once the connection is back. In the documentation we found the DataLogger interface, but we are having issues getting it to work.
In our Android app we first subscribe to the sensor we want (for now only the gyro, but we will expand to include the accelerometer once we have the gyro up and running).
To do this we execute a put command:
Mds put() uri: suunto://<SERIAL>/Mem/DataLogger/Config contract: {"config": { "dataEntries": {"dataEntry": [{"path": "/Meas/Gyro/13"}]}}}
This command is accepted with a '200' code (figuring out the right JSON also took some time as the documentation lacks the 'config' part and uses a completely different path).
After this we try to activate the logger:
Mds put() uri: suunto://<SERIAL>/Mem/DataLogger/State contract: {"newState": 5}
But on this command we get a '403' (FORBIDDEN) error back:
[SDS RESPONSE] type: PUT status: FORBIDDEN header: {"Status": 403, "TaskId": 28, "Reason": "FORBIDDEN", "Uri": "suunto://<SERIAL>/Mem/DataLogger/State", "Content-Length": 0}
What are we doing wrong here? Is there an error in the config? Of are we forgetting some other action?
Note that we made sure to flash an app on the MoveSense that has the DataLoger and Logbook modules enabled.

Answer 1

First step before we can start logging we need to create DataLogger config.
Example for config with Accelerometer and Gyroscope logs.
{
"dataEntries" : {
"dataEntry" : [{
"path" : "/Meas/Acc/13"
}, {
"path" : "/Meas/Gyro/13"
}
]
}
}
Creating config in Android example:
PATH: {serial}/Mem/DataLogger/Config/ REQUEST: PUT
Mds.builder().build(context).put("suunto://" + movesenseSerial + "/Mem/DataLogger/Config/",
jsonConfig, new MdsResponseListener() {
#Override
public void onSuccess(String s) {
}
#Override
public void onError(MdsException e) {
}
});
EXAMPLE RESPONSE:
{"Content": {"dataEntries": {"dataEntry": [{"path": "/Meas/Acc/13"}, {"path": "/Meas/Gyro/13"}]}}}
When config is ready we can start logging.
To start logging, PUT value DATALOGGER_LOGGING (=3) to Mem/DataLogger/State resource
Android start logging example:
PATH: {serial}/Mem/DataLogger/State/ REQUEST: PUT
Mds.builder().build(context).put("suunto://" + movesenseSerial + /Mem/DataLogger/State/,
"{\"newState\":3}", new MdsResponseListener() {
#Override
public void onSuccess(String data) {
}
#Override
public void onError(MdsException error) {
}
});
EXAMPLE RESPONSE:
{"Content": 3}
To stop logging, PUT value DATALOGGER_READY (=2) to Mem/DataLogger/State resource
Android stop logging example:
PATH: {serial}/Mem/DataLogger/State/ REQUEST: PUT
Mds.builder().build(context).put("suunto://" + movesenseSerial + /Mem/DataLogger/State/,
"{\"newState\":2}", new MdsResponseListener() {
#Override
public void onSuccess(String data) {
}
#Override
public void onError(MdsException error) {
}
});
EXAMPLE RESPONSE:
{"Content": 2}
After log file is created we can get all entries / logs from the device:
PATH: /MDS/Logbook/{serial}/Entries REQUEST: GET
Mds.builder().build(context).get("suunto://" + movesenseSerial + "/Mem/Logbook/Entries/",
null, new MdsResponseListener() {
#Override
public void onSuccess(String data) {
}
#Override
public void onError(MdsException error) {
}
});
EXAMPLE RESPONSE:
{"elements": [{"Id": 1, "ModificationTimestamp": 536927972, "Size": null}, {"Id": 5, "ModificationTimestamp": 4446227, "Size": null}]}
When we have Entries we can read them
PATH: /MDS/Logbook/{serial}/byId/{LogId}/Summary REQUEST: GET
Mds.builder().build(context).get("suunto://MDS/Logbook/" + movesenseSerial + "/byId/" + entryId + "/Data",
null, new MdsResponseListener() {
#Override
public void onSuccess(String data) {
}
#Override
public void onError(MdsException error) {
}
});