def __init__(self, port, baudrate, logon):
self.log = logon
self.slipC = SlipConv()
self.SLIP_END = '\xc0'
self.ser = serial.Serial()
self.ser.port = port
self.ser.baudrate = baudrate
self.ser.timeout = 5
try:
self.ser.open()
except serial.SerialException as e:
print('Oops! IO Error. Check ' + port + ' at ' + str(baudrate) +
'.')
sys.exit(1)
if self.log:
print('Opened ' + port + ' at ' + str(baudrate) + '.')
time.sleep(2)
def __init__(self, port, baudrate, logon):
self.log = logon
self.slipC = SlipConv()
self.SLIP_END = '\xc0'
self.ser = serial.Serial()
self.ser.port = port
self.ser.baudrate = baudrate
self.ser.timeout = 5
try:
self.ser.open()
except serial.SerialException as e:
print ('Oops! IO Error. Check ' + port + ' at ' + str(baudrate) + '.')
sys.exit(1)
if self.log:
print ('Opened ' + port + ' at ' + str(baudrate) + '.')
time.sleep(2)
class Protocol:
def __init__(self, port, baudrate, logon):
self.log = logon
self.slipC = SlipConv()
self.SLIP_END = '\xc0'
self.ser = serial.Serial()
self.ser.port = port
self.ser.baudrate = baudrate
self.ser.timeout = 5
try:
self.ser.open()
except serial.SerialException as e:
print ('Oops! IO Error. Check ' + port + ' at ' + str(baudrate) + '.')
sys.exit(1)
if self.log:
print ('Opened ' + port + ' at ' + str(baudrate) + '.')
time.sleep(2)
def printPacket(self, packet):
print ' '.join("%X" % ord(c) if ord(c) > 0x0f else '0' + "%X" % ord(c) for c in packet)
def sendCommand(self, packet):
crcPack = self.slipC.addcrc(packet)
out = self.slipC.slip(crcPack)
self.ser.write(out)
if self.log:
print ('Sent ' + str(len(out)) + ' bytes: '),
self.printPacket(out)
def receiveAnswer(self):
packet = ''
char = ''
firsttime = time.time()
while (time.time() - firsttime) < self.ser.timeout:
char = self.ser.read(1)
if char == self.SLIP_END:
break
if char != self.SLIP_END:
print 'Timeout error!!! Check the connections'
sys.exit(1)
packet += char
beginflag = True
while beginflag:
c = self.ser.read(1)
packet += c
if c == self.SLIP_END:
beginflag = False
if self.log:
print ('Received ' + str(len(packet)) + ' bytes: '),
self.printPacket(packet)
unsliped = self.slipC.unslip(packet)
if self.slipC.checkcrc(unsliped):
if self.log:
print ('CRC - OK')
return self.slipC.getmsgpart(unsliped)
else:
if self.log:
print ('BAD CRC,'),
print 'received ',
self.printPacket(packet)
return ''
def ping(self, adr):
if self.log:
print ('Ping adr=' + str(adr))
self.sendCommand(chr(adr) + chr(0))
if self.receiveAnswer() == ((chr(0) + chr(0x55) + chr(0xAA) + chr(0x55) + chr(0xAA))):
if self.log:
print ('Ping to adr=' + str(adr) + ' - OK')
return True
else:
return False
def getTemp(self, adr):
if self.log:
print ('Get a temperature from sensors.')
self.sendCommand(chr(adr) + chr(1) + chr(1))
res = self.receiveAnswer()
num = ord(res[1])
values = []
for i in range(0, num):
temp, = struct.unpack('<f', res[i*12+2:i*12+6])
sernum = res[i*12+6:i*12+14]
values.append((temp, sernum))
if self.log:
print 'It has ' + str(num) + ' temperature sensors:'
print ("%.1f" % temp + 'C on the sensor with the serial number'),
self.printPacket(sernum)
return values
def getPressure(self, adr):
if self.log:
print ('Get the atmospheric pressure.')
self.sendCommand(chr(adr) + chr(1) + chr(2))
res = self.receiveAnswer()
pressure, = struct.unpack('<i', res[1:5])
sernum = res[5]
if self.log:
if 10 < pressure < 1000:
print (str(pressure) + ' mmHg on the sensor with the serial number'),
self.printPacket(sernum)
else:
print 'The pressure sensor doesn\'t exist'
return pressure, sernum
def getHumidity(self, adr):
if self.log:
print ('Get a humidity.')
self.sendCommand(chr(adr) + chr(1) + chr(3))
res = self.receiveAnswer()
humidity, = struct.unpack('<f', res[1:5])
sernum = res[5]
if self.log:
if math.isnan(humidity):
print 'The humidity sensor doesn\'t exist'
else:
print (str(humidity) + '% on the sensor with the serial number'),
self.printPacket(sernum)
return humidity, sernum
def close(self):
self.ser.close()
class Protocol:
def __init__(self, port, baudrate, logon):
self.log = logon
self.slipC = SlipConv()
self.SLIP_END = '\xc0'
self.ser = serial.Serial()
self.ser.port = port
self.ser.baudrate = baudrate
self.ser.timeout = 5
try:
self.ser.open()
except serial.SerialException as e:
print('Oops! IO Error. Check ' + port + ' at ' + str(baudrate) +
'.')
sys.exit(1)
if self.log:
print('Opened ' + port + ' at ' + str(baudrate) + '.')
time.sleep(2)
def printPacket(self, packet):
print ' '.join("%X" % ord(c) if ord(c) > 0x0f else '0' + "%X" % ord(c)
for c in packet)
def sendCommand(self, packet):
crcPack = self.slipC.addcrc(packet)
out = self.slipC.slip(crcPack)
self.ser.write(out)
if self.log:
print('Sent ' + str(len(out)) + ' bytes: '),
self.printPacket(out)
def receiveAnswer(self):
packet = ''
char = ''
firsttime = time.time()
while (time.time() - firsttime) < self.ser.timeout:
char = self.ser.read(1)
if char == self.SLIP_END:
break
if char != self.SLIP_END:
print 'Timeout error!!! Check the connections'
sys.exit(1)
packet += char
beginflag = True
while beginflag:
c = self.ser.read(1)
packet += c
if c == self.SLIP_END:
beginflag = False
if self.log:
print('Received ' + str(len(packet)) + ' bytes: '),
self.printPacket(packet)
unsliped = self.slipC.unslip(packet)
if self.slipC.checkcrc(unsliped):
if self.log:
print('CRC - OK')
return self.slipC.getmsgpart(unsliped)
else:
if self.log:
print('BAD CRC,'),
print 'received ',
self.printPacket(packet)
return ''
def ping(self, adr):
if self.log:
print('Ping adr=' + str(adr))
self.sendCommand(chr(adr) + chr(0))
if self.receiveAnswer() == ((chr(0) + chr(0x55) + chr(0xAA) +
chr(0x55) + chr(0xAA))):
if self.log:
print('Ping to adr=' + str(adr) + ' - OK')
return True
else:
return False
def getTemp(self, adr):
if self.log:
print('Get a temperature from sensors.')
self.sendCommand(chr(adr) + chr(1) + chr(1))
res = self.receiveAnswer()
num = ord(res[1])
values = []
for i in range(0, num):
temp, = struct.unpack('<f', res[i * 12 + 2:i * 12 + 6])
sernum = res[i * 12 + 6:i * 12 + 14]
values.append((temp, sernum))
if self.log:
print 'It has ' + str(num) + ' temperature sensors:'
print("%.1f" % temp +
'C on the sensor with the serial number'),
self.printPacket(sernum)
return values
def getPressure(self, adr):
if self.log:
print('Get the atmospheric pressure.')
self.sendCommand(chr(adr) + chr(1) + chr(2))
res = self.receiveAnswer()
pressure, = struct.unpack('<i', res[1:5])
sernum = res[5]
if self.log:
if 10 < pressure < 1000:
print(
str(pressure) +
' mmHg on the sensor with the serial number'),
self.printPacket(sernum)
else:
print 'The pressure sensor doesn\'t exist'
return pressure, sernum
def getHumidity(self, adr):
if self.log:
print('Get a humidity.')
self.sendCommand(chr(adr) + chr(1) + chr(3))
res = self.receiveAnswer()
humidity, = struct.unpack('<f', res[1:5])
sernum = res[5]
if self.log:
if math.isnan(humidity):
print 'The humidity sensor doesn\'t exist'
else:
print(
str(humidity) + '% on the sensor with the serial number'),
self.printPacket(sernum)
return humidity, sernum
def close(self):
self.ser.close()