74 lines
1.9 KiB
Python
74 lines
1.9 KiB
Python
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() |