beremiz

stop PLC before unloading

2016-12-07, Andrey Skvortsov
f5868f866d2b
stop PLC before unloading


This fixes segmentation fault if service was quit without stopping it.
It has happened if Beremiz service was quit using taskbar icon or by
closing Beremiz IDE (in case of autostarted local service).

In second case to trigger the bug following step has to be done:
1. Open Beremiz IDE
2. Open project, compile and connect to LOCAL:// runtime
3. Transfer and start the PLC program
4. Open other project without disconneting the PLC runtime
5. Close Beremiz IDE
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<PyFile>
<variables>
<variable name="WiiNunchuckStickX" type="INT"/>
<variable name="WiiNunchuckStickY" type="INT"/>
<variable name="WiiNunchuckAccX" type="INT"/>
<variable name="WiiNunchuckAccY" type="INT"/>
<variable name="WiiNunchuckAccZ" type="INT"/>
<variable name="WiiNunchuckButtons" type="WORD"/>
<variable name="WiiButtons" type="WORD"/>
</variables>
<globals>
<![CDATA[
import cwiid,commands,sys,re,os,time
wiimote = None
WIIMOTE_ADDR_MODEL = re.compile("((?:[0-9A-F]{2})(?::[0-9A-F]{2}){5})\s*Nintendo")
nunchuckzero = None
def Wiimote_cback(messages, time):
global nunchuckzero
state = dict(messages)
bts = state.get(cwiid.MESG_BTN, None)
if bts is not None:
PLCGlobals.WiiButtons = bts
nunchuck = state.get(cwiid.MESG_NUNCHUK, None)
if nunchuck is not None:
PLCGlobals.WiiNunchuckButtons = nunchuck['buttons']
X,Y = nunchuck['stick']
PLCGlobals.WiiNunchuckAccX = nunchuck['acc'][cwiid.X]
PLCGlobals.WiiNunchuckAccY = nunchuck['acc'][cwiid.Y]
PLCGlobals.WiiNunchuckAccZ = nunchuck['acc'][cwiid.Z]
if nunchuckzero is None:
nunchuckzero = X,Y
(PLCGlobals.WiiNunchuckStickX,
PLCGlobals.WiiNunchuckStickY) = X-nunchuckzero[0],Y-nunchuckzero[1]
def Connect_Wiimote(connected_callback):
global wiimote,nunchuckzero
mac_addr = ''
try:
mac_addr = file("wiimac.txt","rt").read()
except:
PLCObject.LogMessage("Wiimote MAC unknown, scanning bluetooth")
output = commands.getoutput("hcitool scan")
result = WIIMOTE_ADDR_MODEL.search(output)
if result is not None:
mac_addr = result.group(1)
PLCObject.LogMessage("Found Wiimote with MAC %s"%mac_addr)
file("wiimac.txt","wt").write(mac_addr)
# Connect to wiimote
if not mac_addr:
PLCObject.LogMessage("Connection to unknown Wiimote...")
wiimote = cwiid.Wiimote()
else:
PLCObject.LogMessage("Connection to Wiimote %s..."%mac_addr)
wiimote = cwiid.Wiimote(mac_addr)
if wiimote is not None:
nunchuckzero = None
wiimote.rpt_mode = cwiid.RPT_BTN | cwiid.RPT_EXT
# use the callback interface
wiimote.mesg_callback = Wiimote_cback
wiimote.enable(cwiid.FLAG_MESG_IFC)
connected_callback(mac_addr)
PLCObject.LogMessage("Wiimote %s Connected"%mac_addr)
else:
PLCObject.LogMessage("Wiimote %s not found"%mac_addr)
os.remove("wiimac.txt")
connected_callback(None)
def Disconnect_Wiimote():
global wiimote
if wiimote is not None:
wiimote.disable(cwiid.FLAG_MESG_IFC)
time.sleep(0.1)
wiimote.close()
wiimote = None
PLCObject.LogMessage("Wiimote disconnected")
]]>
</globals>
<init>
<![CDATA[
]]>
</init>
<cleanup>
<![CDATA[
Disconnect_Wiimote()
]]>
</cleanup>
<start>
<![CDATA[
]]>
</start>
<stop>
<![CDATA[
]]>
</stop>
</PyFile>