class UIApp(App):
def init(self):
self.read_pulse_table()
def build(self):
self.savef = None
self.state = None
self.baselineHR = 60.0 # baseline HR
self.Ts = 1.0 / 50.0 # sampling period
self.modulation = 0.1 # how much to modulate the pressure wave via RR
self.pressure = Pressure()
superBox = BoxLayout(orientation='vertical')
HB = BoxLayout(orientation='horizontal')
cell1 = BoxLayout(orientation='vertical')
self.textinputHomePos = FloatInput(text='100')
cell1h = BoxLayout(orientation='horizontal')
label = Label(text='Home Pos')
cell1h.add_widget(label)
cell1h.add_widget(self.textinputHomePos)
self.textinputCalibMax = FloatInput(text='1500')
cell1bh = BoxLayout(orientation='horizontal')
label = Label(text='Calib Max')
cell1bh.add_widget(label)
cell1bh.add_widget(self.textinputCalibMax)
self.textinputCalibInc = FloatInput(text='25')
cell1ch = BoxLayout(orientation='horizontal')
label = Label(text='Calib Inc')
cell1ch.add_widget(label)
cell1ch.add_widget(self.textinputCalibInc)
self.textinputCalibDelay = FloatInput(text='0.1')
cell1dh = BoxLayout(orientation='horizontal')
label = Label(text='Calib Delay')
cell1dh.add_widget(label)
cell1dh.add_widget(self.textinputCalibDelay)
self.home_button = Button(text='Home')
self.home_button.bind(on_press=self.home)
self.home_button.background_color = default_bgnd
self.calib_button = Button(text='Calibrate')
self.calib_button.background_color = default_bgnd
self.calib_button.bind(on_press=self.calibrate)
cell1.add_widget(cell1h)
cell1.add_widget(self.home_button)
cell1.add_widget(cell1ch)
cell1.add_widget(cell1bh)
cell1.add_widget(cell1dh)
cell1.add_widget(self.calib_button)
HB.add_widget(cell1)
self.pressure_button = Button(text='Read\nPressure')
self.pressure_button.background_color = default_bgnd
self.pressure_button.bind(on_press=self.read_pressure)
cell1b = BoxLayout(orientation='vertical')
cell1b.add_widget(self.pressure_button)
self.pressure_label = Label(text='0.0 mmHg')
cell1b.add_widget(self.pressure_label)
HB.add_widget(cell1b)
cell3 = BoxLayout(orientation='vertical')
cell3a = BoxLayout(orientation='horizontal')
label = Label(text='Systolic')
self.textinputSystolic = FloatInput(text='120.0')
cell3a.add_widget(label)
cell3a.add_widget(self.textinputSystolic)
cell3.add_widget(cell3a)
cell3b = BoxLayout(orientation='horizontal')
label = Label(text='Diastolic')
self.textinputDiastolic = FloatInput(text='80.0')
cell3b.add_widget(label)
cell3b.add_widget(self.textinputDiastolic)
cell3.add_widget(cell3b)
cell3c = BoxLayout(orientation='horizontal')
label = Label(text='HR')
self.textinputHR = FloatInput(text='75.0')
cell3c.add_widget(label)
cell3c.add_widget(self.textinputHR)
cell3.add_widget(cell3c)
cell3d = BoxLayout(orientation='horizontal')
label = Label(text='RR')
self.textinputRR = FloatInput(text='10.0')
cell3d.add_widget(label)
cell3d.add_widget(self.textinputRR)
cell3.add_widget(cell3d)
HB.add_widget(cell3)
self.play_button = Button(text='Play Waveform')
self.play_button.background_color = default_bgnd
self.play_button.bind(on_press=self.play_waveform)
HB.add_widget(self.play_button)
self.exit_button = Button(text='Exit')
self.exit_button.background_color = default_bgnd
self.exit_button.bind(on_press=self.exit_app)
HB.add_widget(self.exit_button)
superBox.add_widget(HB)
#self.graph = Graph(xlabel='X', ylabel='Y', x_ticks_minor=5,
# x_ticks_major=25, y_ticks_major=50,
# y_grid_label=True, x_grid_label=True, padding=5,
# x_grid=True, y_grid=True, xmin=-0, xmax=500, ymin=0, ymax=200)
#self.plot = MeshLinePlot(color=[1, 1, 1, 1])
#self.plot.points = [(x, 50+50*math.sin(x / 10.)) for x in range(0, 501)]
#self.graph.add_plot(self.plot)
self.default_graph_waveform()
superBox.add_widget(self.graph)
#print(self.plot.points)
return superBox
def read_pulse_table(self):
f = open('pulse256.dat', 'rb')
a = f.read()
f.close()
self.pulse256 = struct.unpack("256h", a)
#print(self.pulse256)
def resample_HR(self, values, heartrate):
out = []
ratio = heartrate / self.baselineHR
index = range(len(values))
index0 = []
x = 0
while (x < (len(values) - 1)):
index0.append(x)
v = np.interp(x, index, values)
out.append(v)
x = x + ratio # advance more slowly in time
return out
def default_graph_waveform(self):
self.graph = Graph(xlabel='t (s) or steps',
ylabel='BP (mmHg)',
x_ticks_minor=5,
x_ticks_major=1.0,
y_ticks_major=50,
y_grid_label=True,
x_grid_label=True,
padding=5,
x_grid=True,
y_grid=True,
xmin=-0,
xmax=10.0,
ymin=0,
ymax=240)
self.plot = MeshLinePlot(color=[1, 1, 1, 1])
self.plot.points = [(x * 0.02, 5) for x in range(0, 501)]
self.graph.add_plot(self.plot)
def reset_graph_waveform(self):
self.graph.xmin = 0
self.graph.xmax = 10.0
self.graph.x_ticks_major = 1.0
self.plot.points = [(x * 0.02, 5) for x in range(0, 501)]
def read_pressure_callback(self, x):
(p, mm, t) = self.pressure.quick_read()
swp = self.plot.points[self.index]
copy = (self.index * 0.02, mm)
self.plot.points[self.index] = copy
self.index = (self.index + 1) % 500
self.pressure_label.text = "%3.1f mmHg / %2.1f C" % (mm, t)
def home_callback(self, x):
h = int(self.textinputHomePos.text)
print("home to %d" % h)
self.pressure.home(h)
self.state = None
self.home_button.text = "Home Pos"
self.home_button.background_color = [0.7, 0.7, 0.7, 1]
return False
def calibrate_inc_callback(self, x):
p = self.pressure.one_calibrate(self.calib_inc, self.calib_delay)
if (p >= self.calib_max):
print("End calibrate")
self.pressure.end_calibrate()
self.state = None
self.calib_button.text = "Calibrate"
self.calib_button.background_color = [0.7, 0.7, 0.7, 1]
else:
self.home_event = Clock.schedule_once(self.calibrate_inc_callback,
0.0)
print(self.calib_index, self.pressure.calib_mmHg,
len(self.plot.points))
self.plot.points[self.calib_index] = (
self.pressure.calib_s[self.calib_index],
self.pressure.calib_mmHg[self.calib_index])
#print(self.plot.points)
self.calib_index = self.calib_index + 1
return False
def calibrate_start_callback(self, x):
h = int(self.textinputHomePos.text)
cm = int(self.textinputCalibMax.text)
ci = int(self.textinputCalibInc.text)
cd = float(self.textinputCalibDelay.text)
print("calibrate %d,%d, %d, %f" % (h, cm, ci, cd))
h0 = h
x = [h]
while (h0 <= cm):
h0 = h0 + ci
x.append(h0)
print(x)
self.graph.xmin = h
self.graph.xmax = cm
self.graph.x_ticks_major = 100
self.plot.points = []
for x0 in x:
self.plot.points.append((x0, 0))
#self.graph.add_plot(self.plot)
self.pressure.start_calibrate_curve(h, ci)
self.calib_inc = ci
self.calib_max = cm
self.calib_delay = cd
self.calib_index = 0
self.home_event = Clock.schedule_once(self.calibrate_inc_callback,
0.01)
return False
def play_more_callback(self, x):
out = []
for a in range(10):
R = self.pressure.one_read_timeout()
if (R is None):
break
else:
s, t, pos = R
p0 = np.interp(pos, self.steps, self.mmHgs)
p1 = self.pressure.psi2mmHg(
int(s) * self.pressure.pressure_multiplier)
t1 = float(t) * self.pressure.temp_multiplier
#print(p0,p1)
out.append(p0)
out.append(p1)
self.plot.points[self.play_i] = (
self.plot.points[self.play_i][0], p1)
self.play_i = (self.play_i + 1) % 500
self.pressure_label.text = "%3.1f mmHg / %2.1f C" % (p1, t1)
if (self.savef):
#print(out)
s = struct.pack("{}f".format(len(out)), *out)
self.savef.write(s)
self.play_more_event = Clock.schedule_once(self.play_more_callback, 0)
def play_calibrate_callback(self, x):
# first get our waveform parameters
h = int(self.textinputHomePos.text)
cm = int(self.textinputCalibMax.text)
ci = int(self.textinputCalibInc.text)
systolic = float(self.textinputSystolic.text)
diastolic = float(self.textinputDiastolic.text)
heartrate = float(self.textinputHR.text)
resprate = float(self.textinputRR.text)
cd = float(self.textinputCalibDelay.text)
print("play calibrate %d,%d, %d" % (h, cm, ci))
print("Sys %f Dia %f" % (systolic, diastolic))
(steps0, psi0, mmHg0) = self.pressure.calibrate_curve(h, cm, ci)
self.steps = np.array(steps0)
self.psis = np.array(psi0)
self.mmHgs = np.array(mmHg0)
# Now branch on whether using pulse_table (single pulse with cyclic indexing),
# OR - whole waveform repeated.
if (USE_PULSE_TABLE):
print("Down with UPT....")
v = self.pulse256
minb = 0.0
maxb = 8192.0
print(minb, maxb)
span = maxb - minb
v0 = []
# now convert to float actual mmHg value cycle
for b in v:
x = (float(b) - minb) / span * (systolic -
diastolic) + diastolic
v0.append(x)
# and now calibrate to the right number of steps
ys0 = []
i = 0
while (i < (len(v0))):
x = v0[i]
s = round(np.interp(x, self.mmHgs, self.steps))
ys0.append(s)
i = i + 1
ys0.append(
ys0[0]) # append the first value at the end for wrap-around
self.pressure.write_table(ys0)
hrindex = heartrate / 60.0 * 256.0 / 50.0 # index value per 20ms interval
rrindex = resprate / 60.0 * 256.0 / 50 # index value per 20ms interval
# now convert to X.8 format`
print("Playing table...\n")
self.pressure.play_table(round(hrindex * 256.0),
round(rrindex * 256.0), cm, h)
else: # single recorded waveform sequence, possibly repeated
f = open('TestPulses.dat', 'rb')
a = f.readlines()
f.close()
values = []
for l in a:
x = float(l)
values.append(x)
v = values[:-20]
if (not (self.baselineHR == heartrate)):
print("RESAMPLING @ %f from %f" % (heartrate, self.baselineHR))
values = self.resample_HR(values, heartrate)
minb = 50000
maxb = -50000
for b in v:
if (b > maxb):
maxb = b
if (b < minb):
minb = b
print(minb, maxb)
span = maxb - minb
runs = 1
v0 = []
for i in range(runs):
for b in v:
x = (b - minb) / span * (systolic - diastolic) + diastolic
v0.append(x)
ys = []
ys0 = []
i = 0
t = 0
dt = 20e-3
ts = []
ps = []
mms = []
while (i < (len(v0))):
x = v0[i]
s = round(np.interp(x, self.mmHgs, self.steps))
i = i + 25
ts.append(t)
t = t + dt
ys0.append(s)
for i in range(runs):
for y in ys0:
ys.append(y)
print(len(ys))
self.pressure.write_waveform(ys)
self.pressure.play_waveform(-1, cm, h)
#self.pressure.start_reading()
self.play_i = 0
self.play_button.background_color = [0.7, 0.7, 0.7, 1]
self.play_button.text = "Stop Playing..."
self.state = "PLAY2"
self.savef = open(SAVEFILE_NAME, "wb")
self.play_more_event = Clock.schedule_once(self.play_more_callback, 0)
return False
def read_pressure(self, button):
print("READ PRESSURE")
if (self.state == None):
self.index = 0
self.state = 'PRESSURE'
button.text = "Stop Reading\nPressure & Temp"
button.background_color = [1, 0.5, 0.5, 1]
self.reset_graph_waveform()
self.pressure_event = Clock.schedule_interval(
self.read_pressure_callback, 0.25)
elif (self.state == 'PRESSURE'):
self.state = None
button.text = "Read\nPressure & Temp"
button.background_color = [0.7, 0.7, 0.7, 1]
self.pressure_event.cancel()
def home(self, button):
print("HOME")
if (self.state == None):
self.index = 0
self.state = 'HOME'
button.text = "Going Home"
button.background_color = [1, 0.5, 0.5, 1]
self.home_event = Clock.schedule_once(self.home_callback, 0.1)
def calibrate(self, button):
print("CALIBRATE")
if (self.state == None):
self.state = 'CALIBRATE'
button.text = "Calibrating..."
button.background_color = [1, 0.5, 0.5, 1]
self.home_event = Clock.schedule_once(
self.calibrate_start_callback, 0.25)
def play_stop_callback(self, x):
print("PLAY STOP CALLBACK")
if (self.savef):
self.savef.close()
self.savef = None
self.play_more_event.cancel()
for i in range(1): # drain any old readings
s = self.pressure.one_read_timeout()
if (not s):
break
#self.pressure.stop_reading()
self.play_button.text = "Play Waveform"
self.play_button.background_color = [0.7, 0.7, 0.7, 1]
self.play_event.cancel()
def play_waveform(self, button):
print("PLAY WAVEFORM")
if (self.state == None):
self.state = 'PLAY'
self.play_button.text = "Calibrating..."
self.play_button.background_color = [1, 0.5, 0.5, 1]
self.play_event = Clock.schedule_once(self.play_calibrate_callback,
0.25)
elif (self.state == 'PLAY2'):
print("STOPPING")
self.pressure.set_params(1)
print("STOPPING")
self.state = None
self.play_button.text = "Stopping Waveform"
self.play_button.background_color = [0.5, 0.5, 1, 1]
self.play_event = Clock.schedule_once(self.play_stop_callback,
0.25)
def exit_app(self, button):
print("EXIT")
self.stop()
self.root_window.close()
from finger import Pressure
import time
import numpy as np
from matplotlib import pyplot as plt
plt.ion()
pressure = Pressure()
pressure.reset_sensor()
for i in range(10000):
(p, mm, t) = pressure.quick_read()
print("%2.2f PSI, \t%3.1f mmHg, \t%2.1f C" % (p, mm, t))
time.sleep(0.1)