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example of reading input

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wendtalexander 2024-09-20 11:08:32 +02:00
parent 558e0de315
commit 0e0262a3af
1 changed files with 11 additions and 37 deletions
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48
pyrelacs/repros/input.py
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@ -1,54 +1,28 @@
from typing import Optional
import uldaq import uldaq
from IPython import embed
import typer
from typing_extensions import Annotated
import matplotlib.pyplot as plt import matplotlib.pyplot as plt
from pyrelacs.util.logging import config_logging from pyrelacs.util.logging import config_logging
from .repos import Repos
log = config_logging() log = config_logging()
class ReadData: class ReadData(Repos):
def __init__(self) -> None: def __init__(self) -> None:
devices = uldaq.get_daq_device_inventory(uldaq.InterfaceType.USB) super().__init__()
log.debug(f"Found daq devices {len(devices)}, connecting to the first one")
self.daq_device = uldaq.DaqDevice(devices[0])
self.daq_device.connect()
log.debug("Connected")
def read_analog_in(self, channel: Annotated[Optional[int], typer.Argument()] = 0): def analog_in(self) -> None:
# Get the Ananlog In device and Analog Info # Get the Ananlog In device and Analog Info
ai_device = self.daq_device.get_ai_device() data = self.read_analog_daq(
ai_info = ai_device.get_info() [0, 0],
log.debug( 10,
f"Analog info,\n Channels available {ai_info.get_num_chans()}, \n Max Samplerate: {ai_info.get_max_scan_rate()}" 3000.0,
) )
buffer_len = 1_000_000 plt.plot(data)
buf = uldaq.create_float_buffer(1, buffer_len)
er = ai_device.a_in_scan(
1,
1,
uldaq.AiInputMode.SINGLE_ENDED,
uldaq.Range.BIP10VOLTS,
buffer_len,
500_000,
uldaq.ScanOption.DEFAULTIO,
uldaq.AInScanFlag.DEFAULT,
data=buf,
)
ai_device.scan_wait(uldaq.WaitType.WAIT_UNTIL_DONE, timeout=-1)
log.debug("Scanning")
self.daq_device.disconnect()
self.daq_device.release()
plt.plot(buf)
plt.show() plt.show()
self.disconnect_dac()
if __name__ == "__main__": if __name__ == "__main__":
daq_input = ReadData() daq_input = ReadData()
typer.run(daq_input.read_analog_in) daq_input.analog_in()