def main():
# parse arguments
parser = argparse.ArgumentParser(description=__doc__)
parser.add_argument('--frequency',
'-f',
type=int,
default=10,
help='read out frequency')
parser.add_argument('log_file',
type=argparse.FileType('w'),
default=sys.stdout,
nargs='?',
help='Output file')
args = parser.parse_args()
# probe for sensors
sensors = find_sensors_by_type('sfxx') + find_sensors_by_type('sht3x')
if not sensors:
sys.stderr.writelines('No sensors found!\n')
return
# set up the printing
log_file = args.log_file
if log_file == sys.stdout:
start = time.time()
separator = '\t'
value_format = '{0:.3f} {1}'
missing_format = 'None {1}'
else:
start = 0
separator = ','
value_format = '{0:.3f}'
missing_format = ''
# print a header
log_file.write('timestamp[s]{0}'.format(separator))
log_file.write(
separator.join('{0}[{1}]'.format(type(s).__name__, u) for s in sensors
for u in s.get_units()))
log_file.write('\n')
def print_values(timestamp, values):
log_file.write(value_format.format(timestamp - start, 's'))
for sensor, sensor_values in values.iteritems():
for value, unit in zip(sensor_values, sensor.get_units()):
log_file.write(separator)
if value is None:
log_file.write(missing_format.format(value, unit))
else:
log_file.write(value_format.format(value, unit))
log_file.write('\n')
return True
# run the sensor reader synchranously
try:
reader = SensorReader(sensors, args.frequency, print_values)
reader.run()
finally:
log_file.close()
def main():
# parse arguments
parser = argparse.ArgumentParser(description=__doc__)
parser.add_argument('--frequency', '-f', type=int, default=10, help='read out frequency')
parser.add_argument('log_file', type=argparse.FileType('w'), default=sys.stdout, nargs='?', help='Output file')
args = parser.parse_args()
# probe for sensors
sensors = find_sensors_by_type('sfxx') + find_sensors_by_type('sht3x')
if not sensors:
sys.stderr.writelines('No sensors found!\n')
return
# set up the printing
log_file = args.log_file
if log_file == sys.stdout:
start = time.time()
separator = '\t'
value_format = '{0:.3f} {1}'
missing_format = 'None {1}'
else:
start = 0
separator = ','
value_format = '{0:.3f}'
missing_format = ''
# print a header
log_file.write('timestamp[s]{0}'.format(separator))
log_file.write(separator.join('{0}[{1}]'.format(type(s).__name__, u) for s in sensors for u in s.get_units()))
log_file.write('\n')
def print_values(timestamp, values):
log_file.write(value_format.format(timestamp - start, 's'))
for sensor, sensor_values in values.iteritems():
for value, unit in zip(sensor_values, sensor.get_units()):
log_file.write(separator)
if value is None:
log_file.write(missing_format.format(value, unit))
else:
log_file.write(value_format.format(value, unit))
log_file.write('\n')
return True
# run the sensor reader synchranously
try:
reader = SensorReader(sensors, args.frequency, print_values)
reader.run()
finally:
log_file.close()
def main():
# parse arguments
parser = argparse.ArgumentParser(description=__doc__)
parser.add_argument('--frequency', '-f', type=int, default=10, help='read out frequency')
args = parser.parse_args()
# probe for sensors
sensors_list = ['sfm3000', 'sdp600']
sensors = find_sensors_by_type(sensors_list[0]) + find_sensors_by_type(sensors_list[1])
if not sensors:
sys.stderr.writelines('No sensors found!\n')
return
value_format = '{0:.3f}'
# write data JSON to stdout
def print_values(timestamp, values):
i = 0
sdata = ''
sdata += '\"{'
for sensor, sensor_values in values.iteritems():
for value, unit in zip(sensor_values, sensor.get_units()):
if value is None:
continue
else:
if (i > 0):
sdata += ','
sdata += '\\\"' + sensors_list[i] + '\\\":'
sdata += value_format.format(value)
i += 1
sdata += '}\"'
sdata += '\n'
sys.stdout.write(sdata)
sys.stdout.flush()
return True
# run the sensor reader synchranously
try:
reader = SensorReader(sensors, args.frequency, print_values)
reader.run()
except:
pass
