def __str__(self):
result = array.array('c')
result.fromstring('function: %s\n' % (self.function))
data = self.buffer[1:]
if data:
result.fromstring(dump_tostring(data, 'data: '))
return result.tostring()
def __str__(self):
result = array.array('c')
result.fromstring('function: %s\n' %
(self.function))
data = self.buffer[1:]
if data:
result.fromstring(dump_tostring(data, 'data: '))
return result.tostring()
def __str__(self):
result = array.array('c')
result.fromstring('slave_address: 0x%02X\nfunction: 0x%02X\n' %
(self.slave_address, self.function))
data = self.buffer[2:-2]
if data:
result.fromstring(dump_tostring(data, 'data: '))
result.fromstring('crc: 0x%04X\n' % self.crc)
return result.tostring()
def __str__(self):
result = array.array('c')
result.fromstring('slave_address: 0x%02X\nfunction: 0x%02X\n' %
(self.slave_address, self.function))
data = self.buffer[2:-2]
if data:
result.fromstring(dump_tostring(data, 'data: '))
result.fromstring('crc: 0x%04X\n' % self.crc)
return result.tostring()
def __str__(self):
result = array.array('c')
result.fromstring('slave_address: 0x%02X\nfunction: 0x%02X\n' %
(self.slave_address, self.function))
result.fromstring('byte_count: 0x%02X\nslave_id: 0x%02X\n' %
(self.byte_count, self.slave_id))
result.fromstring('run_status: 0x%02X\n' % self.run_status)
if self.data:
result.fromstring(dump_tostring(self.data, 'data: '))
result.fromstring('crc: 0x%04X\n' % self.crc)
return result.tostring()
def __str__(self):
result = array.array('c')
result.fromstring('slave_address: 0x%02X\nfunction: 0x%02X\n' %
(self.slave_address, self.function))
result.fromstring('byte_count: 0x%02X\nslave_id: 0x%02X\n' %
(self.byte_count, self.slave_id))
result.fromstring('run_status: 0x%02X\n' % self.run_status)
if self.data:
result.fromstring(dump_tostring(self.data, 'data: '))
result.fromstring('crc: 0x%04X\n' % self.crc)
return result.tostring()
def dump_tostring(self, msg, hdr=None, offset=0):
return dump_tostring(msg, hdr, offset, self.dump_cpl)
def dump_tostring(self, msg, hdr=None, offset=0):
return dump_tostring(msg, hdr, offset, self.dump_cpl)
def send_command(self, cmd):
command = cmd
checksum = self.checksum(command)
if cmd: #only add checksum to packets with commands
command += '%c' % checksum
frame_contents = ''
for byte in command: # byte stuffing
if byte in ('\xf0', '\xf1', '\xf2', '\xf3'):
frame_contents += '\xf3%c' % (ord(byte) & 0x03)
else:
frame_contents += byte
#self.port.drain() #discard lingering packets
self.port.write(array.array('c','\xf1' + frame_contents + '\xf2'))
#time.sleep(0.2)
while 1: #loop until response comes back or timeout
msg = array.array('c')
self.port.read_upto(msg, ['\xf1',], self.timeout) #find beginning of response or timeout
msg = array.array('c')
if debug: print 'about to read upto f2'
self.port.read_including(msg, ['\xf2',], 1)
frame_contents = msg.tostring()
if debug: print 'frame_contents: ', self.hexdump(frame_contents)
msg = ''
index = 0
while frame_contents[index] != '\xf2': #un stuff data segment
byte = frame_contents[index]
if byte == '\xf3':
index += 1
msg += '%c' % (ord(frame_contents[index]) | 0xf0)
else:
msg += byte
index += 1
if index >= len(frame_contents):
msglog.log('csafe:send_command',msglog.types.ERR,'Comm error: Frame did not contain end character "f2".')
return (status_text[0],msg[3:-1]) # show Error
#check checksum
#if self.checksum(msg) != 0:
#msglog.log('mpx:csafe',msglog.types.WARN,'Bad CSAFE checksum detected. New status = %u' % ord(msg[0]) & 0xF)
#continue #bad check try again
new_status = ord(msg[0]) & 0xF
if (new_status == 1) and (self.cur_status == 9):
msglog.log('mpx:csafe',msglog.types.INFO,'Detected OffLine To Ready: %s' % _debug.dump_tostring(msg))
self.cur_status = new_status
#print 'FEU %s sent %s' % (self.hexdump(addr), self.hexdump(msg))
# seperate out the status
status = ord(msg[0]) & 0xF
try:
status = status_text[status]
except:
pass #non-legal value for status
if debug: print 'status: ', str(status)
if len(msg) == 2:
#print 'FEU state is now %2.2x' % ord(msg[0])
if cmd == '\x80': #only return if this was a status request
return (status, msg[0],)
else:
if command[0] == '\xaa':
return (status, msg[2:-1],)
else:
if command[0] == msg[1]: #only return if response matches request
return (status, msg[3:-1],) #strip off status, command and checksum
if debug:
print '!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! @@@ csafe rejected a response, look again'
print self.hexdump(frame_contents), self.hexdump(cmd)
def __str__(self):
result = array.array('c')
data = self.buffer
if data:
result.fromstring(dump_tostring(data, 'data: '))
return result.tostring()