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{
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"\"\"\"Example program to demonstrate how to send a multi-channel time series to\n",
"LSL.\"\"\"\n",
"import sys\n",
"import getopt\n",
"\n",
"import time\n",
"from random import random as rand\n",
"\n",
"from pylsl import StreamInfo, StreamOutlet, local_clock\n",
"\n",
"\n",
"def main():\n",
" srate = 100\n",
" name = 'BioSemi'\n",
" type = 'EEG'\n",
" n_channels = 8\n",
"\n",
" # first create a new stream info (here we set the name to BioSemi,\n",
" # the content-type to EEG, 8 channels, 100 Hz, and float-valued data) The\n",
" # last value would be the serial number of the device or some other more or\n",
" # less locally unique identifier for the stream as far as available (you\n",
" # could also omit it but interrupted connections wouldn't auto-recover)\n",
" info = StreamInfo(name, type, n_channels, srate, 'float32', 'myuid34234')\n",
"\n",
" # next make an outlet\n",
" outlet = StreamOutlet(info)\n",
"\n",
" print(\"now sending data...\")\n",
" start_time = local_clock()\n",
" sent_samples = 0\n",
" while True:\n",
" elapsed_time = local_clock() - start_time\n",
" required_samples = int(srate * elapsed_time) - sent_samples\n",
" for sample_ix in range(required_samples):\n",
" # make a new random n_channels sample; this is converted into a\n",
" # pylsl.vectorf (the data type that is expected by push_sample)\n",
" mysample = [rand() for _ in range(n_channels)]\n",
" # now send it\n",
" outlet.push_sample(mysample)\n",
" sent_samples += required_samples\n",
" # now send it and wait for a bit before trying again.\n",
" time.sleep(0.01)\n",
"\n",
"main()"
]
}
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