/**
* this function is called when the user wants to disconnect the device. This could happen if the
* user choosen the wrong shimmer
*/
private void disconnectDevice() {
if (isDeviceConnected()) {
serviceshim.disconnectShimmer(btAddress);
serviceshim.stopStreaming(btAddress);
serviceshim.setLogging(false, btAddress);
} else
Toast.makeText(ShimmerDevicesMenu.this, " No device to disconnect ", Toast.LENGTH_SHORT)
.show();
SystemClock.sleep(200);
updateInterface();
}
/**
* this function determines if the specific shimmer device is connected to the shimmer service. It
* has it's own function because the fucntionality gets used so many times
*
* @return
*/
private boolean isDeviceConnected() {
if (serviceshim != null) {
// if the user returns from the Bluetooth finder then we will have the btAddress
// of the device already and we can set the radio button without having to create
// a list of the connected shimmer devices through the hashMapShimmer
if (btAddress != "" && serviceshim.isDeviceConnected(btAddress)) return true;
else {
HashMap<String, Object> temp = serviceshim.hashMapShimmer;
Collection<Object> shimmers = temp.values();
Iterator<Object> iterator = shimmers.iterator();
while (iterator.hasNext()) {
Shimmer sTemp = (Shimmer) iterator.next();
int sensor = sTemp.getEnabledSensors();
if ((sensor == Shimmer.SENSOR_ECG && deviceid == ECG_DEVICE)
|| (sensor == Shimmer.SENSOR_EMG && deviceid == EMG_DEVICE)
|| (sensor == Shimmer.SENSOR_GSR && deviceid == GSR_DEVICE)) {
btAddress = sTemp.getBluetoothAddress();
return true;
}
// TODO: add section for EEG device
} // end while loop
} // end else statement
} // end if serviceshim not null
return false;
} // end function isDevicConnected()
/**
* This function is called when the user selects 'Start Logging' from the device menu. When
* pressed, we will start streaming data from the device if it is not already streaming data. We
* will then save data to a text file on the users phone or tablet. TODO: make logging compatible
* with the profiles
*/
private void startLogging() {
if (isDeviceConnected()) {
if (!isDeviceStreaming()) // to log data we must first be streaming the data
startStreaming();
if (!isDeviceLogging()) serviceshim.setLogging(true, btAddress);
}
updateInterface();
}
/** Make a simple graph of the data that is being plotted by the currently selected device. */
private void plotData() {
if (isDeviceConnected()) {
if (!isDeviceStreaming()) serviceshim.startStreaming(btAddress);
Intent graphIntent = new Intent(ShimmerDevicesMenu.this, ShimmerGraphActivity.class);
graphIntent.putExtra("Bluetooth Address", btAddress);
startActivity(graphIntent);
} else
Toast.makeText(ShimmerDevicesMenu.this, " Must connect device first", Toast.LENGTH_SHORT)
.show();
}
/**
* This function gets called when the user hits the 'Stop Streaming' button on the menu of this
* activity. This will only be called if the device is currently streaming, and it will stop the
* streaming of data from the currently connected device.
*/
private void stopStreaming() {
if (isDeviceConnected()) {
if (isDeviceStreaming()) {
// since we can't save data that we aren't streaming, set the logging to false
if (isDeviceLogging()) serviceshim.setLogging(false, btAddress);
serviceshim.stopStreaming(btAddress);
Log.d(logName, "ShimmerDevicesMenu: " + devicename + " stopped streaming");
} else
Toast.makeText(
ShimmerDevicesMenu.this, devicename + " is not streaming", Toast.LENGTH_SHORT)
.show();
} // end if is the device is connected
else
Toast.makeText(ShimmerDevicesMenu.this, " Must Connect a Device first", Toast.LENGTH_SHORT)
.show();
SystemClock.sleep(200);
updateInterface();
}
/**
* This function gets called when the user hits the 'Start Streaming' button on the menu of this
* activity. This will start the logging of the data coming frmo the specific shimmer device that
* this menu is made for
*/
private void startStreaming() {
if (isDeviceConnected()) {
if (!isDeviceStreaming()) {
serviceshim.startStreaming(btAddress);
Log.d(logName, "ShimmerDevicesMenu: " + devicename + " started streaming");
} else
Toast.makeText(
ShimmerDevicesMenu.this, devicename + " is already streaming", Toast.LENGTH_SHORT)
.show();
} // end if is the device is connected
else
Toast.makeText(ShimmerDevicesMenu.this, " Must Connect a Device first", Toast.LENGTH_SHORT)
.show();
SystemClock.sleep(100);
updateInterface();
}
/**
* This next function gets called automatically when the dialog windows that correspond to each
* menu choice are closed and the view returns to this activity
*
* @param requestCode the requestCode that was sent to the dialog window
* @param resultCode either success or failure code, lets us know if the action failed or
* succeeded
* @param data the intent that gets passed back from the dialog window
*/
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
TRYING_TO_CONNECT = true;
updateInterface();
if ((resultCode == RESULT_OK && serviceshim != null)
&& data.getStringExtra("device_address") != "") {
btAddress = data.getStringExtra("device_address");
serviceshim.connectShimmer(btAddress, deviceid);
}
// we use this postDelayed to wait a few seconds for the device to connect before we update the
// UI
// we do it this way so as to not freeze the UI while still waiting for the shimmer device to
// connect
mHandler.postDelayed(
new Runnable() {
public void run() {
TRYING_TO_CONNECT = false;
updateInterface();
}
},
25);
} // end onActivityResult
/**
* This function determines if the current device is having its data logged to a file.
*
* @return boolean that corresponds to if the device is logging data currently
*/
private boolean isDeviceLogging() {
if (isDeviceConnected()) return (serviceshim.getLogging(btAddress));
return false;
}
/**
* this function determines if the specific shimmer device is currently streaming.
*
* @return boolean thats true if the device is streaming and false if not
*/
private boolean isDeviceStreaming() {
return (isDeviceConnected() && serviceshim.isDeviceStreaming(btAddress));
}
/** This function stops the application from logging data from a shimmer device to a text file */
private void stopLogging() {
if (isDeviceConnected()) {
if (isDeviceLogging()) serviceshim.setLogging(false, btAddress);
}
updateInterface();
}