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import sys
sys.path.append('/usr/local/lib64/python3.9/site-packages')
import gpib
board = 1
device = 1
def query(handle, command, numbytes=100):
gpib.write(handle,command)
response = gpib.read(handle,numbytes)
response = response.rstrip("\r\n")
return response
def initialise_device(handle): # set up device to assert SRQ/RQS
gpib.write(handle,"*CLS") # Clear status registers
gpib.write(handle,"*SRE 32") # Assert SRQ on OPC
return
def show_devid(handle): # Show device ID
print query(handle,"*IDN?")
return
print gpib.version() # Show package version
ud = gpib.dev(board,device) # Open the device
gpib.config(board,gpib.IbcTMO, gpib.T30s) # Set timeout to 30 seconds
show_devid(ud);
initialise_device(ud);
gpib.write(handle,"*TST;*OPC") # Initiate selftest and request OPC
# Wait for Timeout or Service Request on board
sta = gpib.wait(board, gpib.TIMO | gpib.SRQI)
if (sta & gpib.TIMO) != 0:
print "Timed out"
else:
print "SRQ asserted "
# For each device which might pull SRQ
stb = gpib.serial_poll(ud) # Read status byte
print "stb = %#x"%(stb)
if (stb & gpib.IbStbRQS) != 0: # Check for RQS bit
print "Device asserted RQS"
if (stb & gpib.IbStbESB) != 0: # Check for Event Status bit
esr = int(query(ud,"ESR?")) # Read Event Status Register
if (esr & 1) != 0: # Check for operation completed
print "Device Operation Completed"
# done
gpib.close(ud)
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