Update

script/epics_camera.py

@@ -0,0 +1,74 @@
+import ch.psi.pshell.epics.CAS as CAS
+import ch.psi.pshell.device.Register.RegisterArray as RegisterArray
+import random
+camera = "EPICS_example_1"
+
+IMG_WIDTH = 100
+IMG_HEIGHT = 50
+
+EPICS_PV_SUFFIX_STATUS = ":INIT"
+EPICS_PV_SUFFIX_WIDTH = ":WIDTH"
+EPICS_PV_SUFFIX_HEIGHT = ":HEIGHT"
+EPICS_PV_SUFFIX_IMAGE = ":FPICTURE"
+
+
+class Scalar(RegisterBase):    
+    def __init__(self, name):
+        RegisterBase.__init__(self, name)
+    
+    def doRead(self):
+        return self.val
+
+    def doWrite(self, val):
+        self.val = val
+        
+class Waveform(RegisterBase, RegisterArray):
+    def __init__(self, name):
+        RegisterBase.__init__(self, name)
+
+    def doRead(self):
+        return self.val
+
+    def doWrite(self, val):
+        self.val = val
+
+    def getSize(self):
+        return len(self.take(-1))    #only reads if cache is None
+        
+
+add_device(Scalar("cam_init"), True)
+add_device(Scalar("cam_width"), True)
+add_device(Scalar("cam_height"), True)
+add_device(Waveform("cam_image"), True)
+
+cam_width.write(IMG_WIDTH)
+cam_height.write(IMG_HEIGHT)
+cam_init.write("INIT")
+
+def update_image(width = None, height = None):
+    if width:
+        cam_width.write(width)
+    if height:
+        cam_height.write(height)
+    img = []
+    for i in range(cam_width.take() * cam_height.take()):
+        img.append(int(random.random()*100))
+    cam_image.write(img)
+update_image()
+
+
+#CAS.setServerPort(1234)
+cas1 = CAS(camera + EPICS_PV_SUFFIX_STATUS, cam_init, 'string') 
+cas2 = CAS(camera + EPICS_PV_SUFFIX_WIDTH, cam_width, 'int') 
+cas3 = CAS(camera + EPICS_PV_SUFFIX_HEIGHT, cam_height, 'int')
+cas4 = CAS(camera + EPICS_PV_SUFFIX_IMAGE, cam_image, 'short')
+
+
+print caget(camera + EPICS_PV_SUFFIX_STATUS)
+print caget(camera + EPICS_PV_SUFFIX_WIDTH)
+print caget(camera + EPICS_PV_SUFFIX_HEIGHT)
+#print caget(camera + EPICS_PV_SUFFIX_IMAGE).tolist()
+
+while True:
+    time.sleep(1.0)
+    update_image()