def launch_acquisition(msg):
global isAcquiring
isAcquiring = 1
macAddress = msg['payload']['macAddress']
# This example will collect data for 5 sec.
running_time = 9
batteryThreshold = 30
acqChannels = [0, 1, 2, 3, 4, 5]
samplingRate = 1000
nSamples = 10
digitalOutput = [1, 1]
# Connect to BITalino
device = BITalino(macAddress)
# Set battery threshold
device.battery(batteryThreshold)
# Read BITalino version
print(device.version())
# ON/OFF
device.trigger([1, 1])
device.trigger([0, 0])
# Start Acquisition
device.start(samplingRate, acqChannels)
start = time.time()
end = time.time()
while (end - start) < running_time and isAcquiring == 1:
# Read samples
data = device.read(nSamples)
print(data)
msg['payload']['val'] = data.tolist()
end = time.time()
# Stop acquisition
device.stop()
# Close connection
device.close()
isAcquiring = 0
return ("success")
except:
print "Error: cannot connect to BITalino"
exit()
# Read BITalino version
print(device.version())
# Set battery threshold
device.battery(batterythreshold)
# Start Acquisition
device.start(fsample, channels)
# Turn BITalino led on
digitalOutput = [1,1]
device.trigger(digitalOutput)
startfeedback = time.time();
countfeedback = 0;
print "STARTING STREAM"
while True:
# measure the time that it takes
start = time.time();
# read the selected channels from the
dat = device.read(blocksize)
# it starts with 5 extra channels, the first is the sample number (running from 0 to 15), the next 4 seem to be binary
dat = dat[:,5:]
# write the data to the output buffer
class bitalino_device(object):
def __init__(self, macAddress, batteryThreshold, samplingRate, nSamples):
self.macAddress = macAddress
self.batteryThreshold = batteryThreshold
self.acqChannels = [0, 1, 2, 3, 4, 5]
self.samplingRate = samplingRate
self.nSamples = nSamples
self.status = 0
self.ledOn = [1, 0]
self.ledOff = [0, 1]
self.attSensors = "this"
self.file = ""
self.threshold = 5
self.noise = [1, 1, 1, 1, 1, 1]
self.prevData = [0, 0, 0, 0, 0, 0]
def connect(self):
try:
self.connection = BITalino(self.macAddress)
self.status = 1
except:
print('failed to connect')
def state(self):
return self.connection.state()
def start(self):
self.connection.start(self.samplingRate, self.acqChannels)
def start_read(self):
return self.connection.read(self.nSamples)
def stop(self):
self.connection.stop()
def led_on(self):
self.connection.trigger(self.ledOn)
def led_off(self):
self.connection.trigger(self.ledOff)
def create_file(self, current_directory):
print('in create file')
new_file = bitFile(self.macAddress, self.acqChannels,
self.samplingRate, self.attSensors)
self.file = new_file.createFile(current_directory)
def update_sensors(self, sensorValues):
self.attSensors = sensorValues
def get_sensor_value(self):
print(str(self.attSensors))
def matToString(self, matrix):
"""
:param matrix: The matrix to be turned into string
Returns a string of a matrix row by row, without brackets or commas
"""
r, c = matrix.shape
string = ""
for row in range(0, r):
string = string + strftime("%Y-%m-%d %H:%M:%S", gmtime()) + "\t"
for col in range(1, c):
string = string + str(int(matrix[row, col])) + "\t"
string += "\n"
return string
def openFile(self):
open(self.file, "w")
def checkNoiseArray(self, channels):
for i in range(6):
if (int(channels[i]) - int(self.prevData[i]) < self.threshold):
self.noise[i] = 0
else:
self.noise[i] = 1
self.prevData = channels
#print(self.noise)
def checkNoise(self, data):
data = self.matToString(data)
#print(data)
channels_list = data.split('\n')
for channels in channels_list:
channel = channels.split('\t')
if len(channel) > 1:
self.checkNoiseArray(channel[5:11])
#for channel in channels[2:]:
# print(channel)
def write(self, string_sample):
self.file.write(string_sample)
def closeFile(self):
self.file.close()
except:
print("Error: cannot connect to BITalino")
exit()
# Read BITalino version
print((device.version()))
# Set battery threshold
device.battery(batterythreshold)
# Start Acquisition
device.start(fsample, channels)
# Turn BITalino led on
digitalOutput = [1,1]
device.trigger(digitalOutput)
startfeedback = time.time()
countfeedback = 0
print("STARTING STREAM")
while True:
# measure the time that it takes
start = time.time();
# read the selected channels from the bitalino
dat = device.read(blocksize)
# it starts with 5 extra channels, the first is the sample number (running from 0 to 15), the next 4 seem to be binary
dat = dat[:,5:]
# write the data to the output buffer
def _start():
"""Start the module
This uses the global variables from setup and adds a set of global variables
"""
global parser, args, config, r, response, patch, name
global monitor, debug, device, fsample, blocksize, channels, batterythreshold, nchans, startfeedback, countfeedback, ft_host, ft_port, ft_output, datatype, digitalOutput
# this can be used to show parameters that have changed
monitor = EEGsynth.monitor(name=name, debug=patch.getint("general", "debug"))
# get the options from the configuration file
debug = patch.getint("general", "debug")
device = patch.getstring("bitalino", "device")
fsample = patch.getfloat("bitalino", "fsample", default=1000)
blocksize = patch.getint("bitalino", "blocksize", default=10)
channels = patch.getint("bitalino", "channels", multiple=True) # these should be one-offset
batterythreshold = patch.getint("bitalino", "batterythreshold", default=30)
# switch from one-offset to zero-offset
nchans = len(channels)
for i in range(nchans):
channels[i] -= 1
monitor.info("fsample = " + str(fsample))
monitor.info("channels = " + str(channels))
monitor.info("nchans = " + str(nchans))
monitor.info("blocksize = " + str(blocksize))
try:
ft_host = patch.getstring("fieldtrip", "hostname")
ft_port = patch.getint("fieldtrip", "port")
monitor.success("Trying to connect to buffer on %s:%i ..." % (ft_host, ft_port))
ft_output = FieldTrip.Client()
ft_output.connect(ft_host, ft_port)
monitor.success("Connected to output FieldTrip buffer")
except:
raise RuntimeError("cannot connect to output FieldTrip buffer")
datatype = FieldTrip.DATATYPE_FLOAT32
ft_output.putHeader(nchans, float(fsample), datatype)
try:
# Connect to BITalino
device = BITalino(device)
monitor.success((device.version()))
except:
raise RuntimeError("cannot connect to BITalino")
# Set battery threshold
device.battery(batterythreshold)
# Start Acquisition
device.start(fsample, channels)
# Turn BITalino led on
digitalOutput = [1, 1]
device.trigger(digitalOutput)
startfeedback = time.time()
countfeedback = 0
# there should not be any local variables in this function, they should all be global
if len(locals()):
print("LOCALS: " + ", ".join(locals().keys()))
def main():
# OS Specific Initializations
clearCmd = "cls||clear"
if platform.system() == 'Windows':
clearCmd = "cls"
print("Using Windows default console size 80x24")
columns = 80
rows = 24
else:
clearCmd = "clear"
rows, columns = os.popen('stty size', 'r').read().split()
print("Connecting to BITalino...")
# Set MAC Address with argument
defaultMACAddress = "20:16:12:21:98:56"
if len(sys.argv) == 2:
macAddress = sys.argv[1]
print("Using address: " + macAddress)
elif len(sys.argv) > 1:
print("Please input only 1 argument, which is the address of the BITalino device.")
print("Running without argument will use default MAC Address = " + defaultMACAddress)
print("Exiting...")
exit()
else:
macAddress = defaultMACAddress
print("Using default MAC address: " + macAddress)
# Setting other attributes
batteryThreshold = 30
acqChannels = [0,1]
samplingRate = 100
nSamples = 20
digitalOutput = [1,1]
# Connect to BITalino
device = BITalino(macAddress)
# Set battery threshold
device.battery(batteryThreshold)
# Read BITalino version
os.system(clearCmd)
print("Device Version:" + device.version())
# Start Acquisition
device.start(samplingRate, acqChannels)
# Take baseline measurement
p1Base = []
p2Base = []
start = time.time()
end = time.time()
samplingTime = 15
print("Sampling for baseline...")
while (end - start) < samplingTime:
# Sampling for baseline
baseSample = device.read(nSamples)
p1Base.append(numpy.mean(baseSample[:,5]))
p2Base.append(numpy.mean(baseSample[:,6]))
end = time.time()
p1B = numpy.mean(p1Base)
p2B = numpy.mean(p2Base)
print("\n")
p1P = "Player 1 Baseline: " + str(p1B)
print(p1P)
p2P = "Player 2 Baseline: " + str(p2B)
print(p2P)
print("\n\n\n\n\n\n")
print("Are you ready for the game? Type 'No' to exit".center(int(columns)," "))
response = sys.stdin.readline().rstrip()
if response == "No":
sys.exit()
print("\n")
print("Starting Game...".center(int(columns), " "))
time.sleep(5)
# Start Game
os.system(clearCmd)
gameRunning = True
player1Progress = 28
while gameRunning:
# While not reaching runningTime, read samples
rawData = device.read(nSamples)
portA1 = rawData[:,5]
#print "Port A1: ", portA1
valueA1 = numpy.mean(portA1 - p1B)
#print "Value A1: ", valueA1
#print ""
portA2 = rawData[:,6]
#print "Port A2: ", portA2
valueA2 = numpy.mean(portA2 - p2B)
#print "Value A2: ", valueA2
#print "\n"
if (valueA2 - valueA1) > 10:
player1Progress-=1
elif (valueA2 - valueA1) > 20:
plater1Progress-=2
elif (valueA1 - valueA2) > 10:
player1Progress+=1
elif (valueA1 - valueA2) > 20:
player1Progress+=2
print("\n\n")
print("Player 1 Reading:".center(int(columns)," "))
print("\n")
print(str(valueA1).center(int(columns)," "))
print("\n\n\n")
print("*****************************I*****************************".center(int(columns)," "))
progress = "P1 *" + ' '*player1Progress + 'O' + ' '*(56-player1Progress) + '* P2'
print(progress.center(int(columns)," "))
print("*****************************I*****************************".center(int(columns)," "))
print("\n\n\n")
print("Player 2 Reading:".center(int(columns)," "))
print("\n")
print(str(valueA2).center(int(columns)," "))
time.sleep(0.2)
os.system(clearCmd)
if player1Progress == 0:
print("\n\n\n\n\n")
print("Player 1 has won".center(int(columns)," "))
gameRunning = False
elif player1Progress == 56:
print("\n\n\n\n\n")
print("Player 2 has won".center(int(columns)," "))
gameRunning = False
# Turn BITalino LED on
device.trigger(digitalOutput)
# Stop acquisition
device.stop()
# Close connection
device.close()
class BITalinoProcess(Process):
"""
BITalino acquisition process.
"""
def __init__(self,
outQueue,
goFlag,
acqFlag,
mac=None,
channels=[0],
step=100,
SamplingRate=1000,
timeout=5,
bitCls=None):
# run parent __init__
super(BITalinoProcess, self).__init__()
# synchronization inputs
self.queue = outQueue
self.go = goFlag
self.acq = acqFlag
# BITalino settings
self.mac = mac
self.channels = channels
self.step = step
self.SamplingRate = int(SamplingRate)
if bitCls is None:
self.device = BITalino()
else:
self.device = bitCls()
# trigger stuff
c1, c2 = Pipe()
self._outerPipe = c1
self._innerPipe = c2
self._trigout = 2 * self.step / float(self.SamplingRate)
# timeout
self.timeout = timeout
@classmethod
def instaStart(cls, *args, **kwargs):
# do some class method magic here to instantiate and start the process
outQueue = Queue()
goFlag = Event()
goFlag.set()
acqFlag = Event()
p = cls(outQueue, goFlag, acqFlag, *args, **kwargs)
p.start()
return p, outQueue, goFlag, acqFlag
def _checkTrigger(self):
# check if there is a trigger to act on
if self._innerPipe.poll():
data = self._innerPipe.recv()
try:
mask = data['Mask']
except KeyError:
# report failure
self._innerPipe.send({'Ack': False})
else:
# trigger
self.device.trigger(mask)
# report success
self._innerPipe.send({'Ack': True})
def trigger(self, data=[0, 0, 0, 0]):
# act on digital outputs
if not self.acq.is_set():
return False
# send mask
self._outerPipe.send({'Mask': data})
# wait for ack
if self._outerPipe.poll(self._trigout):
out = self._outerPipe.recv()
return out['Ack']
else:
return False
def connect(self):
# connect to BITalino
if self.device.open(self.mac, self.SamplingRate):
time.sleep(1.5)
print "successful"
return True
else:
print "failed"
return False
def setup(self):
# setup bitalino
print "connecting to %s: " % self.mac
while self.go.is_set():
if self.connect():
return True
time.sleep(1.5)
return False
def on_start(self):
# run immediately after acquisition starts
pass
def exit(self):
# exit process
self.acq.clear()
self.go.clear()
def processData(self, data):
# process received data
# send data
self.queue.put(data)
def on_stop(self):
# run immediately before acquisition stops
pass
def run(self):
# main loop
# connect to device, proceed if successful
if self.setup():
while self.go.is_set():
# wait for acquisition flag
print "Waiting"
self.acq.wait(timeout=self.timeout)
if self.acq.is_set():
# start acquisition
self.device.start(self.channels)
# time.sleep(1)
print "acquiring"
self.on_start()
while self.acq.is_set():
# read data
data = self.device.read(self.step)
# process data
self.processData(data)
# check trigger
self._checkTrigger()
# clean up
self.on_stop()
self.queue.put('')
# stop acquisition
self.device.stop()
# print "blocked"
print "acquisition stopped"
# disconnect device
self.device.close()
print "disconnected"
