def open_device():
log.info('attempting to connect over USB')
try:
gdx.open_usb()
except OSError as _:
gdx.devices = []
pass
if not gdx.devices:
log.info('attempting to connect over BLE')
try:
gdx.open_ble(config['device_id'])
except OSError as _:
return False
# select sensors for GDX-RB 0K1007T6 BLE -41
# 1: Force (N)
# 2: Respiration Rate (bpm)
# 4: Steps (steps)
# 5: Step Rate (spm)
gdx.select_sensors([1,2])
gdx.start(int(config['sampling_period_ms']))
return True
def simulation(q):
import time
from gdx import gdx #The gdx function calls are from a gdx.py file inside the gdx folder, which must be with this program.
gdx = gdx.gdx()
time_between_readings_in_seconds = 0.2
number_of_readings = 500
digits_of_precision = 2
gdx.open_usb()
gdx.select_sensors(
[1]
) # You will be asked to select the sensors to be used. You can select up to three.
sensor_times = []
sensor_readings = []
period_in_ms = time_between_readings_in_seconds * 1000
gdx.start(period_in_ms)
# Data Collection:
collection_complete = False
while not collection_complete:
try:
time = 0
print('Starting...')
for i in range(0, number_of_readings):
# This is where we are reading the list of measurements from the sensors.
measurements = gdx.read()
if measurements == None:
break
q.put([time, measurements[0]])
# Update the time variable with the new time for the next data point
time = time + time_between_readings_in_seconds
# The data collection loop is finished
collection_complete = True
print('Data collection complete.')
#stop sensor readings and disconnect device
gdx.stop()
gdx.close()
q.put('Q')
exit()
except KeyboardInterrupt:
collection_complete = True
gdx.stop() #Stop sensor readings
gdx.close() #Disconnect the device
print('data collection stopped by keypress')
print('Number of readings: ', i + 1)
q.put('Q')
exit()
'''
In this example we are saving the data to a csv file to be opened with Excel.
'''
from gdx import gdx
gdx = gdx.gdx()
import csv
myFile = open('csvexample.csv', 'w', newline='')
writer = csv.writer(myFile)
gdx.open_usb()
gdx.select_sensors([1, 2])
gdx.start(period=500)
column_headers = gdx.enabled_sensor_info()
writer.writerow(column_headers)
for i in range(0, 5):
measurements = gdx.read()
if measurements == None:
break
writer.writerow(measurements)
print(measurements)
gdx.stop()
gdx.close()