After several minutes, the datalogging channel can get out of sync

[JoshuaJB]

@naricdurmus reported in #5:

...if we want to measure for a longer time period (several minutes), we get the following error on the phone: 'It seems like a data buffer is out of sync. Data will be corrupted. Please flush buffers and try again.'

This message is displayed on the phone when the first message it receives from a sensor is not in the expected format (source code). Possible causes:

1. False detection of the start of a data stream
2. Loss of initial message between sensor and phone application in the datalogging component
3. Fragments from previous datalogging session

@naricdurmus: When you originally detected this issue, do you remember if the application showed the receipt of any data before the message popped up? If not, (1.) can be eliminated as a cause.

[huulie]

(On behalf of @naricdurmus:) Joshua, the application showed no receipt of any data before the message popped up. The application just returned an error and chrashed, before any data was recieved