forked from awendt/pyrelacs
292 lines
9.4 KiB
Python
292 lines
9.4 KiB
Python
from ctypes import Array, c_double
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import time
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from typing import Union
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from IPython import embed
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import numpy.typing as npt
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import uldaq
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import numpy as np
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from pyrelacs.util.logging import config_logging
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log = config_logging()
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class MccDac:
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def __init__(self) -> None:
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devices = uldaq.get_daq_device_inventory(uldaq.InterfaceType.USB)
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log.debug(f"Found daq devices {len(devices)}, connecting to the first one")
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if len(devices) == 0:
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log.error("Did not found daq devices, please connect one")
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exit(1)
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self.daq_device = uldaq.DaqDevice(devices[0])
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try:
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self.daq_device.connect()
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except uldaq.ul_exception.ULException:
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self.disconnect_dac()
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self.connect_dac()
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self.ai_device = self.daq_device.get_ai_device()
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self.ao_device = self.daq_device.get_ao_device()
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self.dio_device = self.daq_device.get_dio_device()
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log.debug("Connected")
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def connect_dac(self):
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devices = uldaq.get_daq_device_inventory(uldaq.InterfaceType.USB)
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log.debug(f"Found daq devices {len(devices)}, connecting to the first one")
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if len(devices) == 0:
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log.error("Did not found daq devices, please connect one")
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exit(1)
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self.daq_device = uldaq.DaqDevice(devices[0])
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self.daq_device.connect()
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self.ai_device = self.daq_device.get_ai_device()
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self.ao_device = self.daq_device.get_ao_device()
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self.dio_device = self.daq_device.get_dio_device()
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log.debug("Connected")
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def read_analog(
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self,
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channels: list[int],
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duration: int,
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samplerate: float,
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AiInputMode: uldaq.AiInputMode = uldaq.AiInputMode.SINGLE_ENDED,
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Range: uldaq.Range = uldaq.Range.BIP10VOLTS,
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ScanOption: uldaq.ScanOption = uldaq.ScanOption.DEFAULTIO,
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AInScanFlag: uldaq.AInScanFlag = uldaq.AInScanFlag.DEFAULT,
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) -> Array[c_double]:
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assert len(channels) == 2, log.error("You can only provide two channels [0, 1]")
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if channels[0] != channels[1]:
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buffer_len_channels = 2
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else:
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buffer_len_channels = 1
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buffer_len = np.shape(np.arange(0, duration, 1 / samplerate))[0]
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data_analog_input = uldaq.create_float_buffer(buffer_len_channels, buffer_len)
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er = self.ai_device.a_in_scan(
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channels[0],
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channels[1],
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AiInputMode,
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Range,
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buffer_len,
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samplerate,
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ScanOption,
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AInScanFlag,
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data=data_analog_input,
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)
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return data_analog_input
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def write_analog(
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self,
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data: Union[list, npt.NDArray],
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channels: list[int],
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samplerate: float,
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Range: uldaq.Range = uldaq.Range.BIP10VOLTS,
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ScanOption: uldaq.ScanOption = uldaq.ScanOption.DEFAULTIO,
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AOutScanFlag: uldaq.AOutScanFlag = uldaq.AOutScanFlag.DEFAULT,
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) -> Array[c_double]:
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assert len(channels) == 2, log.error("You can only provide two channels [0, 1]")
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buffer = c_double * len(data)
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data_analog_output = buffer(*data)
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log.debug(f"Created C_double data {data_analog_output}")
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try:
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err = self.ao_device.a_out_scan(
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channels[0],
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channels[1],
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Range,
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int(len(data)),
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samplerate,
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ScanOption,
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AOutScanFlag,
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data_analog_output,
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)
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except Exception as e:
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print(f"{e}")
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self.set_analog_to_zero()
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self.disconnect_dac()
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return data_analog_output
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def set_analog_to_zero(self, channels: list[int] = [0, 1]):
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try:
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err = self.ao_device.a_out_list(
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channels[0],
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channels[1],
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[
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uldaq.Range.BIP10VOLTS,
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uldaq.Range.BIP10VOLTS,
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],
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uldaq.AOutListFlag.DEFAULT,
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[0, 0],
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)
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except Exception as e:
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log.error("f{e}")
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log.error("disconnection dac")
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self.disconnect_dac()
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def diggital_trigger(self) -> None:
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data = self.read_bit(channel=0)
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if data:
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self.write_bit(channel=0, bit=0)
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time.time_ns()
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self.write_bit(channel=0, bit=1)
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else:
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self.write_bit(channel=0, bit=1)
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def write_bit(self, channel: int = 0, bit: int = 1) -> None:
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self.dio_device.d_config_bit(
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uldaq.DigitalPortType.AUXPORT, channel, uldaq.DigitalDirection.OUTPUT
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)
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self.dio_device.d_bit_out(
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uldaq.DigitalPortType.AUXPORT, bit_number=channel, data=bit
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)
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def read_bit(self, channel: int = 0):
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bit = self.dio_device.d_bit_in(uldaq.DigitalPortType.AUXPORT, channel)
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return bit
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def read_digitalio(
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self,
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channels: list[int],
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duration,
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samplerate,
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ScanOptions: uldaq.ScanOption = uldaq.ScanOption.DEFAULTIO,
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DInScanFlag: uldaq.DInScanFlag = uldaq.DInScanFlag.DEFAULT,
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):
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if channels[0] == channels[1]:
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channel_len = 1
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else:
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channel_len = len(channels)
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buffer_len = np.shape(np.arange(0, duration, 1 / samplerate))[0]
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data_digital_input = uldaq.create_int_buffer(channel_len, buffer_len)
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self.dio_device.d_config_port(
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uldaq.DigitalPortType.AUXPORT, uldaq.DigitalDirection.INPUT
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)
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scan_rate = self.dio_device.d_in_scan(
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uldaq.DigitalPortType.AUXPORT0,
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uldaq.DigitalPortType.AUXPORT0,
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len(data_digital_input),
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samplerate,
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ScanOptions,
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DInScanFlag,
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data_digital_input,
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)
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return data_digital_input
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def disconnect_dac(self):
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self.daq_device.disconnect()
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self.daq_device.release()
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def check_attenuator(self):
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"""
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ident : attdev-1
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strobepin : 6
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datainpin : 5
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dataoutpin: -1
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cspin : 4
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mutepin : 7
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zcenpin : -1
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"""
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SAMPLERATE = 40_000.0
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DURATION = 5
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AMPLITUDE = 1
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SINFREQ = 1
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t = np.arange(0, DURATION, 1 / SAMPLERATE)
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data = AMPLITUDE * np.sin(2 * np.pi * SINFREQ * t)
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# data_channels = np.concatenate((data, data))
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db_values = [0, 0, -2, -5, -10, -20, -50]
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db_values = [0, -10, -20]
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for i, db_value in enumerate(db_values):
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log.info(f"Attenuating the Channels, with {db_value}")
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if i == 1:
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log.info("Muting the Channels")
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self.set_attenuation_level(
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db_value, db_value, mute_channel1=True, mute_channel2=True
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)
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else:
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self.set_attenuation_level(db_value, db_value)
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_ = self.write_analog(
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data,
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[0, 0],
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SAMPLERATE,
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ScanOption=uldaq.ScanOption.EXTTRIGGER,
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Range=uldaq.Range.BIP10VOLTS,
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)
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self.diggital_trigger()
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try:
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self.ao_device.scan_wait(uldaq.WaitType.WAIT_UNTIL_DONE, 15)
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self.write_bit(channel=0, bit=0)
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self.set_analog_to_zero()
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except uldaq.ul_exception.ULException:
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log.debug("Operation timed out")
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self.write_bit(channel=0, bit=0)
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self.disconnect_dac()
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self.connect_dac()
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self.set_analog_to_zero()
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finally:
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self.write_bit(channel=0, bit=0)
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self.disconnect_dac()
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self.connect_dac()
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self.set_analog_to_zero()
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log.info("Sleeping for 1 second, before next attenuation")
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time.sleep(1)
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def set_attenuation_level(
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self,
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db_channel1: float = 5.0,
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db_channel2: float = 5.0,
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mute_channel1: bool = False,
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mute_channel2: bool = False,
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):
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"""
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ident : attdev-1
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strobepin : 6
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datainpin : 5
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dataoutpin: -1
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cspin : 4
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mutepin : 7
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zcenpin : -1
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"""
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self.activate_attenuator()
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hardware_possible_db = np.arange(-95.5, 32.0, 0.5)
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byte_number = np.arange(1, 256)
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byte_number_db1 = byte_number[hardware_possible_db == db_channel1][0]
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binary_db1 = np.binary_repr(byte_number_db1, width=8)
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byte_number_db2 = byte_number[hardware_possible_db == db_channel2][0]
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binary_db2 = np.binary_repr(byte_number_db2, width=8)
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if mute_channel1:
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log.info("Muting channel one")
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binary_db1 = "00000000"
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if mute_channel2:
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log.info("Muting channel one")
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binary_db2 = "00000000"
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channels_db = binary_db2 + binary_db1
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self.write_bit(channel=4, bit=0)
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for b in channels_db:
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self.write_bit(channel=5, bit=int(b))
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time.time_ns()
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self.write_bit(channel=6, bit=1)
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time.time_ns()
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self.write_bit(channel=6, bit=0)
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time.time_ns()
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self.write_bit(channel=4, bit=1)
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def activate_attenuator(self):
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for ch, b in zip([4, 5, 6, 7], [1, 0, 0, 1]):
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self.write_bit(channel=ch, bit=b)
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def deactivate_attenuator(self):
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# mute should be enabled for starting calibration
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self.write_bit(channel=7, bit=0)
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