Analog Input - Voltage and Thermocouple Single Task

Author: Dilmi Wickramanayake

examples/nidaqmx_continuous_analog_input/nidaqmx_continuous_analog_input.py

@@ -0,0 +1,38 @@
+"""This example demonstrates how to open/update a Streamlit application using nipanel package."""
+
+import nipanel
+import nidaqmx
+import pathlib
+import time
+
+script_path = pathlib.Path(__file__)
+panel_script_path = str(script_path.with_name("nidaqmx_continuous_analog_input_panel.py"))
+
+panel = nipanel.StreamlitPanel(
+    panel_id="nidaqmx_continuous_analog_input_panel",
+    streamlit_script_path=panel_script_path,
+)
+
+data_arr = []
+with nidaqmx.Task() as task:
+    task.ai_channels.add_ai_voltage_chan("Mod1/ai2")
+    task.ai_channels.add_ai_thrmcpl_chan("Mod1/ai3")
+    try:
+        total_read = 0
+        while True:
+            data = task.read(number_of_samples_per_channel=3)
+            read = len(data)
+            total_read += read
+    
+            data_arr.append(data)
+            time.sleep(1)
+            panel.set_value("amplitude",data_arr[-1][-1])
+            panel.set_value("Volts",data_arr[-1][0])
+    except KeyboardInterrupt:
+            pass
+    finally:
+            task.stop()
+            print(f"\nAcquired {total_read} total samples.")
+
+
+

examples/nidaqmx_continuous_analog_input/nidaqmx_continuous_analog_input_panel.py

@@ -0,0 +1,168 @@
+"""Streamlit application script for displaying values using nipanel package."""
+import nipanel
+import streamlit as st
+import streamlit.components.v1 as components
+from streamlit_echarts import st_echarts
+
+panel = nipanel.StreamlitPanelValueAccessor(panel_id="nidaqmx_continuous_analog_input_panel")
+
+add_refresh_component = components.declare_component(
+            "panelRefreshComponent",
+            url=f"http://localhost:42001/panels/refresh/{panel.panel_id}",)
+add_refresh_component()
+
+
+st.title("Analog Input - Voltage and Thermocouple in a Single Task")
+voltage_tab, thermocouple_tab = st.tabs(["Voltage", "Thermocouple"])
+
+st.markdown(
+    """
+    <style>
+    div[data-baseweb="select"] {
+        width: 190px !important; /* Adjust the width as needed */
+    }
+    </style>
+    """,
+    unsafe_allow_html=True
+)
+
+
+list_of_therm_amp = panel.get_value("amplitude")
+list_of_voltage_amp = panel.get_value("Volts")
+
+if "therm_history" not in st.session_state:
+    st.session_state.therm_history = []
+if "volts_history" not in st.session_state:
+    st.session_state.volts_history = []
+
+for therm_amp in list_of_therm_amp:
+    st.session_state.therm_history.append(therm_amp)
+for voltage_amp in list_of_voltage_amp:
+    st.session_state.volts_history.append(voltage_amp)
+
+therm_amp_graph = {
+    "tooltip": {"trigger": "axis"},
+    "legend": {"data": ["thermocouple_amplitude"]},
+    "xAxis": {
+        "type": "category",
+        "data":list(range(len(st.session_state.therm_history))),
+        "name": "Time"
+    },
+    "yAxis": {
+        "type": "value",
+        "name": "Thermocouple Amplitude"
+    },
+    "series": [
+        {
+            "name": "thermocouple_amplitude",
+            "type": "line",
+            "data": st.session_state.therm_history,
+            "color": "red"
+        },
+     
+        
+    ],
+}
+st_echarts(options=therm_amp_graph, height="400px")
+
+voltage_amp_graph = {
+    "tooltip": {"trigger": "axis"},
+    "legend": {"data": ["voltage_amplitude"]},
+    "xAxis": {
+        "type": "category",
+        "data": list(range(len(st.session_state.volts_history))),
+        "name": "Time"
+    },
+    "yAxis": {
+        "type": "value",
+        "name": "Voltage Amplitude"
+    },
+    "series": [
+        {
+            "name": "voltage_amplitude",
+            "type": "line",
+            "data": st.session_state.volts_history,
+        },
+        
+    ],
+}
+st_echarts(options=voltage_amp_graph, height="400px")
+
+st.header("Voltage & Thermocouple")
+voltage_therm_graph = {
+    "tooltip": {"trigger": "axis"},
+    "legend": {"data": ["voltage_amplitude", "thermocouple_amplitude"]},
+    "xAxis": {
+        "type": "category",
+        "data": list(range(len(st.session_state.volts_history))),
+        "name": "Time"
+    },
+    "yAxis": {
+        "type": "value",
+        "name": "Voltage and Thermocouple Amplitude"
+    },
+    "series": [
+        {
+            "name": "voltage_amplitude",
+            "type": "line",
+            "data": st.session_state.volts_history,
+            "emphasis": {"focus":"series"},
+            "smooth": True,
+            "seriesLayoutBy": "row",
+        },
+        {
+            "name": "thermocouple_amplitude",
+            "type": "line",
+            "data": st.session_state.therm_history,
+            "color": "red",
+            "emphasis": {"focus":"series"},
+            "smooth": True,
+            "seriesLayoutBy": "row",
+        },
+    ],
+}
+st_echarts(options=voltage_therm_graph, height="400px")
+
+with voltage_tab:
+    left_volt_tab, center_volt_tab, right_volt_tab = st.columns(3)
+    with left_volt_tab:
+        st.selectbox(options=["Mod1/ai2"], label="Physical Channels", disabled=True)
+        st.selectbox(options=["Off"], label="Logging Modes", disabled=False)
+    with center_volt_tab:
+        st.selectbox(options=["-5"],label="Min Value")
+        st.selectbox(options=["5"],label="Max Value")
+        st.selectbox(options=["1000"], label="Samples per Loops", disabled=False)
+    with right_volt_tab:
+        st.selectbox(options=["default"], label="Terminal Configurations")
+        st.selectbox(options=["OnboardClock"], label="Sample Clock Sources", disabled=False)
+
+        
+thermocouple_tab.header("Thermocouple")
+with thermocouple_tab:
+    left, middle, right = st.columns(3)
+    with left:
+        st.selectbox(options=["Mod1/ai3"], label="Physical Channel", disabled=True)
+        st.selectbox(options=["0"], label="Min", disabled=False)
+        st.selectbox(options=["100"], label="Max", disabled=False)
+        st.selectbox(options=["Off"], label="Logging Mode", disabled=False)
+        
+    with middle:
+        st.selectbox(options=["Deg C"], label = "Units", disabled=False)
+        st.selectbox(options=["J"], label="Thermocouple Type", disabled=False)
+        st.selectbox(options=["Constant Value"], label="CJC Source", disabled=False)
+        st.selectbox(options=["1000"], label="Samples per Loop", disabled=False)
+    with right:
+        st.selectbox(options=["25"],label="CJC Value", disabled=False)
+        st.selectbox(options=["OnboardClock"], label="Sample Clock Source", disabled=False)
+        st.selectbox(options=[" "], label="Actual Sample Rate", disabled=True)
+    
+
+
+ 
+
+
+
+
+    
+  
+

examples/sample/sample.py

@@ -12,7 +12,7 @@
     streamlit_script_path=panel_script_path,
 )
 panel.set_value("sample_string", "Hello, World!")
-panel.set_value("sample_int", 42)
+panel.set_value("sample_int", 6)
 panel.set_value("sample_float", 3.14)
 panel.set_value("sample_bool", True)
 panel.set_value("float_values", [1.1, 2.2, 3.3])