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gui.py
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gui.py
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import sys
import os
import paho.mqtt.client as mqtt
from PySide6 import QtWidgets, QtGui, QtCore
from ui import Ui_MainWindow
from pyqtgraph.ptime import time
from spo2 import R, SPO2, HeartRate
import json
import numpy as np
class ESM(QtWidgets.QMainWindow, Ui_MainWindow):
def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
self.setupUi(self)
# Connection
self.broker_address = "127.0.0.1"
self.client = mqtt.Client("P1")
self.client.on_message = self.on_message
# Save's signaling
self.browse.clicked.connect(self.browse_file)
self.setSaveState.clicked.connect(self.set_save_state)
self.save_state = False
self.pauseSave.clicked.connect(self.pause_save)
self.pause_state = False
# Setting's signaling
self.setSetting.clicked.connect(self.ppg_setting)
# Plot's signaling & setting
self.setNsample.clicked.connect(self.esp_set_Nsample)
self.setPlotSize.clicked.connect(self.set_plot_size)
self.plot_size = 1000
self.setPlotState.clicked.connect(self.set_plot_state)
self.plot_state = False
self.ppg.setRange(QtCore.QRectF(0, 0, self.plot_size, 80000))
self.ppg.enableAutoRange()
self.redLine = self.ppg.plot(pen='r')
self.irLine = self.ppg.plot(pen='w')
self.ecgLine = self.ecg.plot(pen='g')
self.ecg.setRange(QtCore.QRectF(0, 0, self.plot_size, 4096))
self.ecg.enableAutoRange()
self.timer = QtCore.QTimer()
self.timer.timeout.connect(self.update)
self.lastTime = time()
self.fps = None
self.R_list = []
self.HR_list = []
self.timestamp_data, self.red_data, self.ir_data, self.ecg_data = [], [], [], []
# Advance
self.timer2 = QtCore.QTimer()
self.timer2.timeout.connect(self.check_esp_status)
# self.timer2.start(10000)
def open(self):
self.client.connect(self.broker_address)
self.client.subscribe("esp32/data")
self.client.subscribe("esp32/status")
self.client.loop_start()
self.set_esp_transmission_state(1)
def close(self):
self.set_esp_transmission_state(0)
self.client.loop_stop()
self.client.disconnect()
def ppg_setting(self):
"""
led : "ledBrightness" : Options: 0=Off to 255=50mA \n
savg : "sampleAverage" : Options: 1, 2, 4, 8, 16, 32 \n
mode : "ledMode" : Options: 1 = Red only, 2 = Red + IR, 3 = Red + IR + Green \n
sr : "sampleRate" : Options: 50, 100, 200, 400, 800, 1000, 1600, 3200 \n
pw : "pulseWidth" : Options: 69, 118, 215, 411 \n
adc : "adcRange" : Options: 2048, 4096, 8192, 16384 \n
"""
setting_dict = {
"ledBrightness" : self.ledBrightness.value(),
"sampleAverage" : self.sampleAverage.currentText(),
"ledMode" : self.ledMode.currentIndex()+1,
"sampleRate" : self.sampleRate.currentText(),
"pulseWidth" : self.pulseWidth.currentText(),
"adcRange" : self.adcRange.currentText()
}
setting_json = json.dumps(setting_dict)
self.client.publish("esp32/max30102_setting", setting_json)
def esp_set_Nsample(self):
self.client.publish("esp32/Nsampling", self.Nsample.value())
def set_esp_transmission_state(self, state):
self.client.publish("esp32/transmission_state", state)
def check_esp_status(self):
self.client.publish("esp32/check_status", "some text")
def trimData(self, Nleft):
if len(self.red_data) > Nleft:
self.red_data[:-Nleft] = []
self.ir_data[:-Nleft] = []
self.ecg_data[:-Nleft] = []
self.timestamp_data[:-Nleft] = []
def data(self, message):
samples = str(message.payload.decode("utf-8")).split('END')[0].split('#')
# f = open(fname,'a+')
l = []
for sample in samples:
if len(sample) != 0:
l.append(sample.split(','))
if self.save_state == True:
self.f.write(str(l[-1]).replace("[","").replace("]","\n"))
# f.close()
for sample in l:
self.timestamp_data.extend([sample[0]])
self.red_data.extend([int(sample[1])])
self.ir_data.extend([int(sample[2])])
self.ecg_data.extend([int(sample[3])])
def on_message(self, client, userdata, message):
if message.topic == "esp32/data":
self.data(message)
elif message.topic == "esp32/status":
self.boardStatus.setText(str(message.payload.decode("utf-8")))
def update(self):
self.trimData(self.plot_size)
self.redLine.setData(np.array(self.red_data))
self.irLine.setData(np.array(self.ir_data))
self.ecgLine.setData(np.array(self.ecg_data))
self.now = time()
dt = self.now - self.lastTime
self.lastTime = self.now
if self.fps is None:
self.fps = 1.0/dt
else:
s = np.clip(dt*3., 0, 1)
self.fps = self.fps * (1-s) + (1.0/dt) * s
R_value, posPeak, negPeak = R(np.array(self.red_data), np.array(self.ir_data))
if isinstance(R_value, float):
self.R_list.append(R_value)
HR = HeartRate(posPeak, self.timestamp_data)
if HR != -1:
self.HR_list.append(HR)
if len(self.R_list) > 400:
self.R_list[:-400] = []
if len(self.HR_list) > 400:
self.HR_list[:-400] = []
self.ppg.setTitle('%0.2f fps, SpO2: %0.2f, SpO2^: %0.2f' % (self.fps, SPO2(np.mean(self.R_list)), SPO2(np.mean(self.R_list)/3.43)))
self.ecg.setTitle('HeartRate: %d bpm' % (int(np.mean(self.HR_list))))
def set_plot_size(self):
self.plot_size = int(self.plotSize.value())
def set_plot_state(self):
self.plot_state = not self.plot_state
if self.plot_state:
self.setPlotState.setText("Stop plotting")
self.timer.start(0)
else:
self.setPlotState.setText("Start plotting")
self.timer.stop()
def browse_file(self):
fname = str(QtGui.QFileDialog.getSaveFileName()[0])
if fname == '':
path = os.path.expanduser("~/Documents/KMITL/EPM/")
if not os.path.exists(path):
os.makedirs(path)
fname = "default_filename.txt"
self.path.setText(path+fname)
elif fname.endswith(".txt"):
self.path.setText(fname)
else:
self.path.setText(fname+".txt")
def set_save_state(self):
self.save_state = not self.save_state
if self.save_state:
self.setSaveState.setText("Stop")
self.pauseSave.setEnabled(True)
else:
self.setSaveState.setText("Start")
self.pauseSave.setDisabled(True)
self.pauseSave.setText("Pause")
self.pause_state = False
def pause_save(self):
self.pause_state = not self.pause_state
if self.pause_state:
self.pauseSave.setText("Resume")
else:
self.pauseSave.setText("Pause")
if __name__ == "__main__":
app = QtWidgets.QApplication(sys.argv)
window = ESM()
window.open()
window.show()
app.exec_()
window.close()