blob: 4c50b8ff1560e83c3e0253839f4230ea3ad6ab61 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
|
#!/usr/bin/env python3
#
# Simple pyprofibus dummy example using dummy PHY.
# This example can be run without any PB hardware.
#
import pyprofibus
master = None
try:
# Parse the config file.
config = pyprofibus.PbConf.fromFile("example_dummy.conf")
# Create a DP master.
master = config.makeDPM()
# Create the slave descriptions.
outData = {}
for slaveConf in config.slaveConfs:
slaveDesc = slaveConf.makeDpSlaveDesc()
# Register the slave at the DPM
master.addSlave(slaveDesc)
# Set initial output data.
outData[slaveDesc.slaveAddr] = bytearray((0x42, 0x24))
# Initialize the DPM
master.initialize()
# Run the slave state machine.
while True:
# Write the output data.
for slaveDesc in master.getSlaveList():
slaveDesc.setOutData(outData[slaveDesc.slaveAddr])
# Run slave state machines.
handledSlaveDesc = master.run()
# Get the in-data (receive)
if handledSlaveDesc:
inData = handledSlaveDesc.getInData()
if inData is not None:
# In our example the output data shall be the inverted input.
outData[handledSlaveDesc.slaveAddr][0] = inData[1]
outData[handledSlaveDesc.slaveAddr][1] = inData[0]
except pyprofibus.ProfibusError as e:
print("Terminating: %s" % str(e))
finally:
if master:
master.destroy()
|
