initial commit, version 0.4.1 from http://sourceforge.net/projects/libk8055

1 files changed, 88 insertions, 0 deletions

diff --git a/pyk8055/pyplotA.py b/pyk8055/pyplotA.py
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+#!/usr/bin/env python
+# $Id: pyplotA.py,v 1.2 2007/03/15 14:55:38 pjetur Exp $
+#
+# Simple plotting of analog input data from the K8055 board
+#
+# based on the running plot sample from pyQwt
+# The Python version of qwt-*/examples/data_plot/data_plot.cpp
+
+import random, sys
+from qt import *
+from qwt import *
+from Numeric import *
+from pyk8055 import *
+
+
+class DataPlot(QwtPlot):
+
+    def __init__(self, *args):
+        QwtPlot.__init__(self, *args)
+
+        # Initialize data
+        self.x = arrayrange(0.0, 100.1, 0.5)
+        self.a1 = zeros(len(self.x), Float)
+        self.a2 = zeros(len(self.x), Float)
+
+        self.setTitle("Simple K8055 datascope")
+        self.setAutoLegend(True)
+
+        self.curve1 = self.insertCurve("Input 1")
+        self.curve2 = self.insertCurve("Input 2")
+
+        self.setCurvePen(self.curve1, QPen(Qt.red))
+        self.setCurvePen(self.curve2, QPen(Qt.blue))
+
+        # No automatic scaling, set y-scale 0-255
+        self.setAxisScale(QwtPlot.yLeft,0,255,50)
+
+        # set marker line in the middle - value 128
+        mY = self.insertLineMarker("", QwtPlot.yLeft)      
+        self.setMarkerYPos(mY, 128.0)
+
+        self.setAxisTitle(QwtPlot.xBottom, "Time (seconds)")
+        self.setAxisTitle(QwtPlot.yLeft, "Values")
+
+        self.startTimer(50)
+
+        self.k = k8055(0)
+    # __init__()
+
+    def timerEvent(self, e):
+
+        # data moves from left to right:
+        # shift data array right and assign new value data[0]
+
+        self.a1 = concatenate((self.a1[:1], self.a1[:-1]), 1)
+        self.a1[0] = self.k.ReadAnalogChannel(1)
+
+        self.a2 = concatenate((self.a2[:1], self.a2[:-1]), 1)
+        self.a2[0] = self.k.ReadAnalogChannel(2)
+
+        self.setCurveData(self.curve1, self.x, self.a1)
+        self.setCurveData(self.curve2, self.x, self.a2)
+
+        self.replot()
+
+    # timerEvent()
+
+# class DataPlot
+
+def main(args): 
+    app = QApplication(args)
+    demo = make()
+    app.setMainWidget(demo)
+    app.exec_loop()
+
+# main()
+
+def make():
+    demo = DataPlot()
+    demo.resize(500, 300)
+    demo.show()
+    return demo
+
+# make()
+
+# Admire
+if __name__ == '__main__':
+    main(sys.argv)