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Dilmi Wickramanayake
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Merge branch 'users/DilmiWickramanayake/Analog_Output_voltage' of https://github.com/ni/nipanel-python into users/DilmiWickramanayake/Analog_Output_voltage
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‎examples/nidaqmx_current/nidaqmx_current.py‎

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"""Data acquisition script that continuously acquires analog input data."""
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from pathlib import Path
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import nidaqmx
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from nidaqmx.constants import (
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AcquisitionType,
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CurrentShuntResistorLocation,
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CurrentUnits,
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Edge,
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LoggingMode,
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LoggingOperation,
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Slope,
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)
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from settings import AnalogPause, PauseWhen
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import nipanel
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panel_script_path = Path(__file__).with_name("nidaqmx_current_panel.py")
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panel = nipanel.create_panel(panel_script_path)
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panel.set_value("is_running", False)
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try:
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print(f"Panel URL: {panel.panel_url}")
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print(f"Waiting for the 'Run' button to be pressed...")
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print(f"(Press Ctrl + C to quit)")
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while True:
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while not panel.get_value("run_button", False):
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panel.set_value("is_running", False)
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panel.set_value("is_running", True)
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panel.set_value("stop_button", False)
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# How to use nidaqmx: https://nidaqmx-python.readthedocs.io/en/stable/
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with nidaqmx.Task() as task:
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chan = task.ai_channels.add_ai_current_chan(
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"Mod3/ai10",
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max_val=panel.get_value("max_value_current", 0.01),
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min_val=panel.get_value("min_value_current", -0.01),
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ext_shunt_resistor_val=panel.get_value("shunt_resistor_value", 249.0),
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shunt_resistor_loc=panel.get_value(
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"shunt_location", CurrentShuntResistorLocation.EXTERNAL
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),
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)
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task.timing.cfg_samp_clk_timing(
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rate=panel.get_value("rate", 1000.0),
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sample_mode=AcquisitionType.CONTINUOUS,
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samps_per_chan=panel.get_value("num_of_samps", 1000),
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)
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panel.set_value("sample_rate", task._timing.samp_clk_rate)
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task.in_stream.configure_logging(
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file_path=panel.get_value("tdms_file_path", "data.tdms"),
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logging_mode=panel.get_value("logging_mode", LoggingMode.OFF),
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operation=LoggingOperation.OPEN_OR_CREATE,
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)
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trigger_type = panel.get_value("trigger_type")
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if trigger_type == "5":
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task.triggers.start_trigger.cfg_anlg_edge_start_trig(
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trigger_source="APFI0",
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trigger_slope=panel.get_value("slope", Slope.FALLING),
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trigger_level=panel.get_value("level", 0.0),
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)
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if trigger_type == "2":
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task.triggers.start_trigger.cfg_dig_edge_start_trig(
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trigger_source="/Dev2/PFI0", trigger_edge=panel.get_value("edge", Edge.FALLING)
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)
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task.triggers.start_trigger.anlg_edge_hyst = hysteresis = panel.get_value(
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"hysteresis", 0.0
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)
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try:
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task.start()
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while not panel.get_value("stop_button", False):
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data = task.read(
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number_of_samples_per_channel=1000
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) # pyright: ignore[reportArgumentType]
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panel.set_value("voltage_data", data)
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panel.set_value("current_data", data)
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panel.set_value("strain_data", data)
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except KeyboardInterrupt:
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pass
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finally:
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task.stop()
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panel.set_value("is_running", False)
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panel.set_value("run_button", False)
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except KeyboardInterrupt:
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pass

‎examples/nidaqmx_current/nidaqmx_current_panel.py‎

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"""Streamlit visualization script to display data acquired by nidaqmx_analog_input_filtering.py."""
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import extra_streamlit_components as stx # type: ignore[import-untyped]
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import streamlit as st
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from nidaqmx.constants import (
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CurrentShuntResistorLocation,
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CurrentUnits,
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Edge,
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FilterResponse,
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LoggingMode,
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Slope,
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StrainGageBridgeType,
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TerminalConfiguration,
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)
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from settings import AnalogPause, PauseWhen
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from streamlit_echarts import st_echarts
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import nipanel
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from nipanel.controls import enum_selectbox
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st.set_page_config(page_title="Current - Continuous Input", page_icon="📈", layout="wide")
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st.title("Current - Continuous Input")
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panel = nipanel.get_panel_accessor()
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left_col, right_col = st.columns(2)
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is_running = panel.get_value("is_running", True)
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with left_col:
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if is_running:
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st.button("Stop", key="stop_button")
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else:
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st.button("Run", key="run_button")
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st.markdown(
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"""
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<style>
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div[data-baseweb="select"] {
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width: 190px !important; /* Adjust the width as needed */
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}
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</style>
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""",
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unsafe_allow_html=True,
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)
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streamlit_style = """
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<style>
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iframe[title="streamlit_echarts.st_echarts"]{ height: 400px; width:100%;}
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</style>
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"""
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st.markdown(streamlit_style, unsafe_allow_html=True)
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with left_col:
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with st.container(border=True):
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st.title("Channel Settings")
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st.selectbox(options=["Mod3/ai10"], index=0, label="Physical Channels", disabled=True)
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enum_selectbox(
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panel,
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label="Shunt Resistor",
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value=CurrentShuntResistorLocation.EXTERNAL,
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disabled=panel.get_value("is_running", False),
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key="shunt_location",
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)
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min_value_current = st.number_input(
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"Min Current (A)",
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value=0.0,
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step=0.001,
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disabled=panel.get_value("is_running", False),
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)
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panel.set_value("min_value_current", min_value_current)
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max_value_current = st.number_input(
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"Max Current (A)",
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value=0.02,
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step=1.0,
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key="max_value_current",
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disabled=panel.get_value("is_running", False),
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)
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current = panel.set_value("max_value_current", max_value_current) # type:ignore
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shunt_resistor_value = st.number_input(
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"Shunt Resistor Value (Ohm)",
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value=249.0,
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step=1.0,
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disabled=panel.get_value("is_running", False),
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)
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panel.set_value("shunt_resistor_value", shunt_resistor_value)
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st.title("Timing Settings")
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st.selectbox("Sample Clock Source", options=["Onboard Clock"], index=0, disabled=True)
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st.number_input(
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"Sample Rate",
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value=1000.0,
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min_value=1.0,
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step=1.0,
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disabled=panel.get_value("is_running", False),
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key="rate",
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)
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st.number_input(
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"Number of Samples",
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value=1000,
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min_value=1,
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step=1,
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disabled=panel.get_value("is_running", False),
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key="num_of_samps",
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)
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st.selectbox(
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"Actual Sample Rate", options=[panel.get_value("sample_rate", 100.0)], disabled=True
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)
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st.title("Logging Settings")
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enum_selectbox(
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panel,
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label="Logging Mode",
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value=LoggingMode.OFF,
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disabled=panel.get_value("is_running", False),
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key="logging_mode",
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)
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tdms_file_path = st.text_input(
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label="TDMS File Path",
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disabled=panel.get_value("is_running", False),
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value="data.tdms",
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key="tdms_file_path",
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)
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with right_col:
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with st.container(border=True):
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st.title("Trigger Settings")
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id = stx.tab_bar(
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data=[
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stx.TabBarItemData(id=1, title="No Trigger", description=""),
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stx.TabBarItemData(id=2, title="Digital Start", description=""),
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stx.TabBarItemData(id=3, title="Digital Pause", description=""),
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stx.TabBarItemData(id=4, title="Digital Reference", description=""),
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stx.TabBarItemData(id=5, title="Analog Start", description=""),
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stx.TabBarItemData(id=6, title="Analog Pause", description=""),
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stx.TabBarItemData(id=7, title="Analog Reference", description=""),
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],
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default=1,
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)
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trigger_type = id
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panel.set_value("trigger_type", trigger_type)
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tab1, tab2, tab3, tab4, tab5, tab6, tab7 = st.tabs(
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[
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"No Trigger",
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"Digital Start",
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"Digital Pause",
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"Digital Reference",
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"Analog Start",
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"Analog Pause",
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"Analog Reference",
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]
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)
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with tab1:
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st.write(
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"To enable triggers, select a tab above, and configure the settings. \n Not all hardware supports all trigger types. Refer to your device documentation for more information."
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)
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with tab2:
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st.selectbox("Source->", " /Dev1/PFI0")
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enum_selectbox(
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panel,
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label="Edge",
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value=Edge.FALLING,
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disabled=panel.get_value("is_running", False),
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key="edge",
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)
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with tab3:
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st.write(
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"This trigger type is not supported in continuous sample timing. Refer to your device documentation for more information on which triggers are supported."
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)
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pause_when = PauseWhen[pause_when[0]] # type: ignore
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panel.set_value("pause_when", pause_when)
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with tab4:
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st.write(
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"This trigger type is not supported in continuous sample timing. Refer to your device documentation for more information on which triggers are supported"
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)
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with tab5:
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st.selectbox("Source:", "APFI0")
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enum_selectbox(
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panel,
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label="Slope",
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value=Slope.FALLING,
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disabled=panel.get_value("is_running", False),
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key="slope",
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)
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level = st.number_input("Level")
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panel.set_value("level", level)
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hysteriesis = st.number_input(
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"Hysteriesis", disabled=panel.get_value("is_running", False)
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)
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panel.set_value("hysteriesis", hysteriesis)
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with tab6:
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st.write(
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"This trigger type is not supported in continuous sample timing. Refer to your device documentation for more information on which triggers are supported."
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)
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with tab7:
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st.write(
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"This trigger type is not supported in continuous sample timing. Refer to your device documentation for more information on which triggers are supported."
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)
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with right_col:
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current_data = panel.get_value("current_data", [1.0])
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sample_rate = panel.get_value("sample_rate", 0.0)
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with right_col:
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with st.container(border=True):
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graph = {
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"animation": False,
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"tooltip": {"trigger": "axis"},
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"legend": {"data": ["Current Data"]},
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"xAxis": {
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"type": "category",
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"data": [x / sample_rate for x in range(len(current_data))],
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"name": "Time",
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"nameLocation": "center",
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"nameGap": 40,
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},
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"yAxis": {
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"type": "value",
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"name": "Amps",
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"nameRotate": 90,
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"nameLocation": "center",
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"nameGap": 40,
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},
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"series": [
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{
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"name": "voltage_amplitude",
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"type": "line",
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"data": current_data,
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"emphasis": {"focus": "series"},
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"smooth": True,
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"seriesLayoutBy": "row",
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},
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],
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}
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st_echarts(options=graph, height="400px", key="graph", width="100%")

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