Data Logger

数据记录器，允许实时模拟/数字信号记录和观看

Description: This data logger is a companion application designed to work with specific data loggers. For a list of capabilities please see the log below. This app works only on phones equipped with bluetooth low-energy hardware.

Changelog:

v0.1.21

* Allows viewing real-time analog/digital signal on the screen, with pinch-zoom to adjust data density.

* Ability to record the signal and to export/import the recording to a comma delimited format.

* Ability to review prior recordings with pinch-zoom, side scrolling and seek-bar functionality.

* Allowing the user to set up customizable sound/vibration/popup alerts if the signal is above/below certain threshold for a given number of seconds.

* Added the settings screen for customizing screen features, line appearance, and data refresh rate.

v0.2.21

* Add an indicator of time lapsed since beginning of recording/scrolled from the left

* Fix seek bar position indicator out of sync or jumping outside of range

v0.3.22

* Converted the bluetooth connectivity method to BLE v4.0

* Added a batch transmission mode to allow simultaneous transmission of up to 10 sensor values.

* Added vertical axis labels and alert level indicator.

v0.4.22

* Added ability to set Datalogger CPU frequency, input pin

* Added a setting to enable automatic data window range scaling

* Added the ability to transfer data in batch mode

Permissions:

BLUETOOTH - Needed to communicate with the data logging device using bluetooth connection.

BLUETOOTH_ADMIN - Needed to search nearby bluetooth devices in order to initiate pairing with the data logging device.

READ_EXTERNAL_STORAGE - Needed for re-importing the comma separated data recording into the app.

WRITE_EXTERNAL_STORAGE - Needed for exporting the data recording to a CSV file.

VIBRATE - Needed for initiating the vibration alert when specified in the "Manage Alerts" settings screen.