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#!/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()
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