Bump dependence dvg-pyqtgraph-threadsafe==1.0

Author: Dennis-van-Gils

DvG_pyqt_ChartHistory.py

@@ -24,6 +24,7 @@ Other depencies you'll need for this demo can be installed by running::
 * `dvg-debug-functions <https://pypi.org/project/dvg-debug-functions/>`_
 * `dvg-qdeviceio <https://pypi.org/project/dvg-qdeviceio/>`_
 * `dvg-devices <https://pypi.org/project/dvg-devices/>`_
+* `dvg-pyqtgraph-threadsafe <https://pypi.org/project/dvg-pyqtgraph-threadsafe/>`_
 * `psutil <https://pypi.org/project/psutil/>`_
 * `pySerial <https://pypi.org/project/pyserial/>`_
 * `NumPy <http://www.numpy.org/>`_

README.rst

@@ -6,8 +6,8 @@
 __author__ = "Dennis van Gils"
 __authoremail__ = "[email protected]"
 __url__ = "https://github.com/Dennis-van-Gils/DvG_Arduino_PyQt_multithread_demo"
-__date__ = "24-07-2020"
-__version__ = "5.0"
+__date__ = "30-07-2020"
+__version__ = "6.0"
 # pylint: disable=bare-except, broad-except
 
 import os
@@ -23,11 +23,11 @@
 import pyqtgraph as pg
 
 from dvg_debug_functions import tprint, dprint, print_fancy_traceback as pft
+from dvg_pyqtgraph_threadsafe import HistoryChartCurve
 from dvg_devices.Arduino_protocol_serial import Arduino
 from dvg_qdeviceio import QDeviceIO
 
 from DvG_pyqt_FileLogger import FileLogger
-from DvG_pyqt_ChartHistory import ChartHistory
 from DvG_pyqt_controls import create_Toggle_button, SS_GROUP
 
 try:
@@ -184,7 +184,7 @@ def __init__(self, parent=None, **kwargs):
         #   Bottom frame
         # -------------------------
 
-        # Create PlotItem
+        # GraphicsWindow
         self.gw_chart = pg.GraphicsWindow()
         self.gw_chart.setBackground([20, 20, 20])
         self.pi_chart = self.gw_chart.addPlot()
@@ -209,10 +209,12 @@ def __init__(self, parent=None, **kwargs):
             self.pi_chart.getAxis("left").setStyle(tickTextOffset=20)
             self.pi_chart.getAxis("left").setWidth(120)
 
-        # Create ChartHistory and PlotDataItem and link them together
-        PEN_01 = pg.mkPen(color=[255, 255, 90], width=3)
-        num_samples = round(CHART_HISTORY_TIME * 1e3 / DAQ_INTERVAL_MS)
-        self.CH_1 = ChartHistory(num_samples, self.pi_chart.plot(pen=PEN_01))
+        self.history_chart_curve = HistoryChartCurve(
+            capacity=round(CHART_HISTORY_TIME * 1e3 / DAQ_INTERVAL_MS),
+            linked_curve=self.pi_chart.plot(
+                pen=pg.mkPen(color=[255, 255, 90], width=3)
+            ),
+        )
 
         # 'Readings'
         p = {"readOnly": True}
@@ -300,7 +302,7 @@ def process_qpbt_clear_chart(self):
         )
 
         if reply == QtWid.QMessageBox.Yes:
-            self.CH_1.clear()
+            self.history_chart_curve.clear()
 
     @QtCore.pyqtSlot()
     def process_qpbt_record(self):
@@ -309,6 +311,10 @@ def process_qpbt_record(self):
         else:
             file_logger.stopping = True
 
+    @QtCore.pyqtSlot(str)
+    def set_text_qpbt_record(self, text_str):
+        self.qpbt_record.setText(text_str)
+
     @QtCore.pyqtSlot()
     def process_qpbt_wave_sine(self):
         qdev_ard.send(ard.write, "sine")
@@ -321,37 +327,25 @@ def process_qpbt_wave_square(self):
     def process_qpbt_wave_sawtooth(self):
         qdev_ard.send(ard.write, "sawtooth")
 
-    @QtCore.pyqtSlot(str)
-    def set_text_qpbt_record(self, text_str):
-        self.qpbt_record.setText(text_str)
-
-
-# ------------------------------------------------------------------------------
-#   update_GUI
-# ------------------------------------------------------------------------------
-
-
-@QtCore.pyqtSlot()
-def update_GUI():
-    str_cur_date, str_cur_time, _ = get_current_date_time()
-    window.qlbl_cur_date_time.setText("%s    %s" % (str_cur_date, str_cur_time))
-    window.qlbl_update_counter.setText("%i" % qdev_ard.update_counter_DAQ)
-    window.qlbl_DAQ_rate.setText("DAQ: %.1f Hz" % qdev_ard.obtained_DAQ_rate_Hz)
-    window.qlin_reading_t.setText("%.3f" % state.time)
-    window.qlin_reading_1.setText("%.4f" % state.reading_1)
-
-
-# ------------------------------------------------------------------------------
-#   update_chart
-# ------------------------------------------------------------------------------
-
+    @QtCore.pyqtSlot()
+    def update_GUI(self):
+        str_cur_date, str_cur_time, _ = get_current_date_time()
+        self.qlbl_cur_date_time.setText(
+            "%s    %s" % (str_cur_date, str_cur_time)
+        )
+        self.qlbl_update_counter.setText("%i" % qdev_ard.update_counter_DAQ)
+        self.qlbl_DAQ_rate.setText(
+            "DAQ: %.1f Hz" % qdev_ard.obtained_DAQ_rate_Hz
+        )
+        self.qlin_reading_t.setText("%.3f" % state.time)
+        self.qlin_reading_1.setText("%.4f" % state.reading_1)
 
-@QtCore.pyqtSlot()
-def update_chart():
-    if DEBUG:
-        tprint("update_curve")
+    @QtCore.pyqtSlot()
+    def update_chart(self):
+        if DEBUG:
+            tprint("update_curve")
 
-    window.CH_1.update_curve()
+        self.history_chart_curve.update()
 
 
 # ------------------------------------------------------------------------------
@@ -430,8 +424,8 @@ def DAQ_function():
     if use_PC_time:
         state.time = time.perf_counter()
 
-    # Add readings to chart histories
-    window.CH_1.add_new_reading(state.time, state.reading_1)
+    # Add readings to chart history
+    window.history_chart_curve.append_data(state.time, state.reading_1)
 
     # Logging to file
     if file_logger.starting:
@@ -515,14 +509,14 @@ def DAQ_function():
     qdev_ard.create_worker_DAQ(
         DAQ_function             = DAQ_function,
         DAQ_interval_ms          = DAQ_INTERVAL_MS,
-        critical_not_alive_count = 3,
+        critical_not_alive_count = 1,
         debug                    = DEBUG,
     )
     # fmt: on
     qdev_ard.create_worker_jobs(debug=DEBUG)
 
     # Connect signals to slots
-    qdev_ard.signal_DAQ_updated.connect(update_GUI)
+    qdev_ard.signal_DAQ_updated.connect(window.update_GUI)
     qdev_ard.signal_connection_lost.connect(notify_connection_lost)
 
     # Start workers
@@ -534,7 +528,7 @@ def DAQ_function():
 
     timer_chart = QtCore.QTimer()
     # timer_chart.setTimerType(QtCore.Qt.PreciseTimer)
-    timer_chart.timeout.connect(update_chart)
+    timer_chart.timeout.connect(window.update_chart)
     timer_chart.start(CHART_INTERVAL_MS)
 
     # --------------------------------------------------------------------------

demo_A_GUI_full.py

@@ -6,8 +6,8 @@
 __author__ = "Dennis van Gils"
 __authoremail__ = "[email protected]"
 __url__ = "https://github.com/Dennis-van-Gils/DvG_Arduino_PyQt_multithread_demo"
-__date__ = "24-07-2020"
-__version__ = "5.0"
+__date__ = "30-07-2020"
+__version__ = "6.0"
 # pylint: disable=bare-except, broad-except
 
 import os
@@ -23,11 +23,10 @@
 import pyqtgraph as pg
 
 from dvg_debug_functions import dprint, print_fancy_traceback as pft
+from dvg_pyqtgraph_threadsafe import HistoryChartCurve
 from dvg_devices.Arduino_protocol_serial import Arduino
 from dvg_qdeviceio import QDeviceIO
 
-from DvG_pyqt_ChartHistory import ChartHistory
-
 try:
     import OpenGL.GL as gl  # pylint: disable=unused-import
 except:
@@ -98,7 +97,7 @@ def __init__(self, parent=None, **kwargs):
         self.setGeometry(350, 50, 800, 660)
         self.setWindowTitle("Arduino & PyQt multithread demo")
 
-        # Create PlotItem
+        # GraphicsWindow
         self.gw_chart = pg.GraphicsWindow()
         self.gw_chart.setBackground([20, 20, 20])
         self.pi_chart = self.gw_chart.addPlot()
@@ -113,10 +112,12 @@ def __init__(self, parent=None, **kwargs):
             disableAutoRange=True,
         )
 
-        # Create ChartHistory and PlotDataItem and link them together
-        PEN_01 = pg.mkPen(color=[255, 255, 90], width=3)
-        num_samples = round(CHART_HISTORY_TIME * 1e3 / DAQ_INTERVAL_MS)
-        self.CH_1 = ChartHistory(num_samples, self.pi_chart.plot(pen=PEN_01))
+        self.history_chart_curve = HistoryChartCurve(
+            capacity=round(CHART_HISTORY_TIME * 1e3 / DAQ_INTERVAL_MS),
+            linked_curve=self.pi_chart.plot(
+                pen=pg.mkPen(color=[255, 255, 90], width=3)
+            ),
+        )
 
         vbox = QtWid.QVBoxLayout(self)
         vbox.addWidget(self.gw_chart, 1)
@@ -175,8 +176,8 @@ def DAQ_function():
     if use_PC_time:
         state.time = time.perf_counter()
 
-    # Add readings to chart histories
-    window.CH_1.add_new_reading(state.time, state.reading_1)
+    # Add readings to chart history
+    window.history_chart_curve.append_data(state.time, state.reading_1)
 
     return True
 
@@ -234,7 +235,7 @@ def DAQ_function():
     qdev_ard.create_worker_DAQ(
         DAQ_function             = DAQ_function,
         DAQ_interval_ms          = DAQ_INTERVAL_MS,
-        critical_not_alive_count = 3,
+        critical_not_alive_count = 1,
         debug                    = DEBUG,
     )
     # fmt: on
@@ -247,7 +248,7 @@ def DAQ_function():
     # --------------------------------------------------------------------------
 
     timer_chart = QtCore.QTimer()
-    timer_chart.timeout.connect(window.CH_1.update_curve)
+    timer_chart.timeout.connect(window.history_chart_curve.update)
     timer_chart.start(CHART_INTERVAL_MS)
 
     # --------------------------------------------------------------------------