disable run button

Author: Dilmi Wickramanayake

examples/nidaqmx/nidaqmx_analog_output_voltage/nidaqmx_analog_output_voltage.py

@@ -23,13 +23,14 @@
         available_channel_names.append(chan.name)
 panel.set_value("available_channel_names", available_channel_names)
 
-available_trigger_sources = []
+available_trigger_sources = [""]
 for dev in system.devices:
     if hasattr(dev, "terminals"):
         for term in dev.terminals:
             available_trigger_sources.append(term)
 panel.set_value("available_trigger_sources", available_trigger_sources)
 try:
+    panel.set_value("daq_error", "")
     print(f"Panel URL: {panel.panel_url}")
     print(f"Waiting for the 'Run' button to be pressed...")
     print(f"(Press Ctrl + C to quit)")
@@ -51,7 +52,7 @@
             amplitude = panel.get_value("amplitude", 1.0)
 
             task.timing.cfg_samp_clk_timing(
-                source=panel.get_value("source", "/Dev4/PFI0"),
+                source=panel.get_value("source", ""),  # "" - OnboardClock
                 rate=sample_rate,
                 sample_mode=AcquisitionType.CONTINUOUS,
             )
@@ -82,7 +83,6 @@
             writer.write_many_sample(waveform)
             panel.set_value("data", waveform.tolist())
             try:
-                panel.set_value("daq_error", "")
                 task.start()
                 panel.set_value("is_running", True)
                 panel.set_value("stop_button", False)

examples/nidaqmx/nidaqmx_analog_output_voltage/nidaqmx_analog_output_voltage_panel.py

@@ -35,6 +35,21 @@
     unsafe_allow_html=True,
 )
 
+
+def hide_run_button()-> None:
+    """hide_run_button is used to disable run button when DAQ error pops up."""
+    st.markdown(
+        """
+        <style>
+        button[data-testid="stBaseButton-secondary"] {
+            display: none;
+        }
+        </style>
+        """,
+        unsafe_allow_html=True,
+    )
+
+
 with left_col:
     with st.container(border=True):
         is_running = panel.get_value("is_running", True)
@@ -46,7 +61,8 @@
         if panel.get_value("daq_error", "") == "":
             pass
         else:
-            st.error(panel.get_value("daq_error", ""))
+            hide_run_button()
+            st.error(panel.get_value("daq_error", "") + " Please re-run script")
 
         st.title("Channel Settings")
         physical_channel = st.selectbox(