lasp/scripts/play_sine

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#!/usr/bin/python3
import numpy as np
import sys, logging, os, argparse
parser = argparse.ArgumentParser(
description='Play a sine wave'
)
parser.add_argument('--freq', '-f', help='Sine frequency [Hz]', type=float,
default=1000.)
parser.add_argument('--log', '-l',
help='Specify log level [info, debug, warning, ...]',
type=str, default='info')
args = parser.parse_args()
numeric_level = getattr(logging, args.log.upper(), None)
if not isinstance(numeric_level, int):
raise ValueError('Invalid log level: %s' % args.loglevel)
FORMAT = "[%(levelname)s %(filename)s:%(lineno)s - %(funcName)20s() ] %(message)s"
logging.basicConfig(format=FORMAT, level=numeric_level)
import multiprocessing
from lasp import (StreamManager, AvType, Siggen, SignalType, SiggenData)
from lasp.device import DaqConfigurations
if __name__ == '__main__':
multiprocessing.set_start_method('forkserver', force=True)
logging.info(f'Playing frequency {args.freq} [Hz]')
configs = DaqConfigurations.loadAllConfigs()
config_keys = [key for key in configs.keys()]
for i, key in enumerate(config_keys):
print(f'{i:2} : {key}')
choosen_index = input('Number of configuration to use: ')
try:
daqindex = int(choosen_index)
except:
print('Invalid configuration number. Exiting.')
sys.exit(0)
choosen_key = config_keys[daqindex]
daqconfig = configs[choosen_key].output_config
print(f'Choosen configuration: {choosen_key}')
try:
streammgr = StreamManager()
outq = streammgr.getOutputQueue()
siggendata = SiggenData(
fs=48e3,
nframes_per_block=1024,
dtype=np.dtype(np.int16),
eqdata=None,
level_dB=-20,
signaltype=SignalType.Periodic,
signaltypedata=(args.freq,)
)
siggen = Siggen(outq, siggendata)
streammgr.activateSiggen()
streammgr.startStream(AvType.audio_output, daqconfig)
input('Press any key to stop...')
streammgr.stopStream(AvType.audio_output)
finally:
siggen.cleanup()
streammgr.cleanup()