92 lines
3.3 KiB
Python
92 lines
3.3 KiB
Python
from pyqtgraph.Qt import QtGui, QtCore
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import numpy as np
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import pyqtgraph as pg
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from pytec.client import Client
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rec_len = 1000
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refresh_period = 20
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class Curves:
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def __init__(self, legend: str, key: str, channel: int, color: str, buffer_len: int, period: int):
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self.curveItem = pg.PlotCurveItem(pen=({'color': color, 'width': 1}))
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self.legendStr = legend
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self.keyStr = key
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self.channel = channel
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self.data_buf = np.zeros(buffer_len)
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self.time_stamp = np.zeros(buffer_len)
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self.buffLen = buffer_len
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self.period = period
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def update(self, tec_data, cnt):
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if cnt == 0:
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np.copyto(self.data_buf, np.full(self.buffLen, tec_data[self.channel][self.keyStr]))
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else:
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self.data_buf[:-1] = self.data_buf[1:]
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self.data_buf[-1] = tec_data[self.channel][self.keyStr]
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self.time_stamp[:-1] = self.time_stamp[1:]
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self.time_stamp[-1] = cnt * self.period / 1000
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self.curveItem.setData(x = self.time_stamp, y = self.data_buf)
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class Graph:
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def __init__(self, parent: pg.LayoutWidget, title: str, row: int, col: int, curves: list[Curves]):
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self.plotItem = pg.PlotWidget(title=title)
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self.legendItem = pg.LegendItem(offset=(75, 30), brush=(50,50,200,150))
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self.legendItem.setParentItem(self.plotItem.getPlotItem())
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parent.addWidget(self.plotItem, row, col)
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self.curves = curves
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for curve in self.curves:
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self.plotItem.addItem(curve.curveItem)
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self.legendItem.addItem(curve.curveItem, curve.legendStr)
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def update(self, tec_data, cnt):
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for curve in self.curves:
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curve.update(tec_data, cnt)
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self.plotItem.setRange(xRange=[(cnt - self.curves[0].buffLen) * self.curves[0].period / 1000, cnt * self.curves[0].period / 1000])
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tec = Client()
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app = pg.mkQApp()
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mw = QtGui.QMainWindow()
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mw.setWindowTitle('Thermostat Control Panel')
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mw.resize(1024,800)
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cw = QtGui.QWidget()
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mw.setCentralWidget(cw)
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l = QtGui.QVBoxLayout()
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layout = pg.LayoutWidget()
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l.addWidget(layout)
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cw.setLayout(l)
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pg.setConfigOptions(antialias=True)
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ch0tempGraph = Graph(layout, 'Channel 0 Temperature', 1, 1, [Curves('Feedback', 'temperature', 0, 'r', rec_len, refresh_period)])
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ch1tempGraph = Graph(layout, 'Channel 1 Temperature', 2, 1, [Curves('Feedback', 'temperature', 1, 'r', rec_len, refresh_period)])
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ch0currentGraph = Graph(layout, 'Channel 0 Current', 1, 2, [Curves('Feedback', 'tec_i', 0, 'r', rec_len, refresh_period),
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Curves('Setpoint', 'i_set', 0, 'g', rec_len, refresh_period)])
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ch1currentGraph = Graph(layout, 'Channel 1 Current', 2, 2, [Curves('Feedback', 'tec_i', 1, 'r', rec_len, refresh_period),
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Curves('Setpoint', 'i_set', 1, 'g', rec_len, refresh_period)])
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cnt = 0
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def updateData():
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global cnt
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for data in tec.report_mode():
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ch0tempGraph.update(data, cnt)
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ch1tempGraph.update(data, cnt)
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ch0currentGraph.update(data, cnt)
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ch1currentGraph.update(data, cnt)
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if quit:
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break
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cnt += 1
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## Start a timer to rapidly update the plot in pw
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t = QtCore.QTimer()
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t.timeout.connect(updateData)
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t.start(refresh_period)
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mw.show()
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if __name__ == '__main__':
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pg.exec() |