for a in data[1:-1]: if a == 0x7E: print "To many 0x7E in the message" ## Validating CRC print crc_test(data) # Removing Start and Stop Bit data = data[1:-1] ## Destuffing data = destuffed(data) length = data[5] print 'Length is', length ## Filtering content by removing the tinyOS Header xmesh_msg = data[6:-2] ## Printing out the payload -> Convert to dictionary print 'Multihop Header' print 'sourceAddr', hex(xmesh_msg[0]), hex(xmesh_msg[1]) print 'originAddr', hex(xmesh_msg[2]), hex(xmesh_msg[3]) print 'seqno', hex(xmesh_msg[4]), hex(xmesh_msg[5])
def __init__(self,msg):
f = open("msg_log",'w')
f.writelines(map(str,msg))
f.close
# Removing 7E: Start and Stop bit
msg = msg[1:-1]
# Destuffing message -> Replacing encrypted 7E
msg = destuffed(msg)
if msg[3] == 0xb:
self.tipe = "normal"
# Removing xmesh Header
msg = msg[6:-2]
# Converting data
self.node = conector(msg[2:4])
# print "Confirm node mapping", self.node
# Humity
humid_medida = conector(msg[13:15])
humtemp_medida = conector(msg[15:17])
humtemp_calc = -38.4 + (0.0098*humtemp_medida)
self.humidade =(0.0098 * humtemp_medida - 63.4)*(0.01+0.00008*humid_medida)-4 + \
(0.0405*humid_medida) - (0.0000028*humid_medida*humid_medida)
# Temperature
self.temperatura = -38.4 + (0.0098*humtemp_medida)
# Luminosity
taosch0_bin = conector(msg[29:31])
taosch1_bin = conector(msg[31:33])
taosch0_bin_0=taosch0_bin & 0xFF
taosch1_bin_1=taosch1_bin & 0xFF
v0 = (taosch0_bin_0 & 0b10000000) >>7
c0 = (taosch0_bin_0 & 0b01110000) >>4
s0 = (taosch0_bin_0 & 0b00001111)
v1 = (taosch1_bin_1 & 0b10000000) >>7
c1 = (taosch1_bin_1 & 0b01110000) >>4
s1 = (taosch1_bin_1 & 0b00001111)
adccount0 = 16.5*((pow(2,c0)-1))+(s0*(pow(2,c0)))
adccount1 = 16.5*((pow(2,c1)-1))+(s1*(pow(2,c1)))
exponencial=exp(-3.13*(adccount1/adccount0))
self.light = (adccount0*0.46*exponencial)
# Pressure
C1= (conector(msg[17:19]) >> 1)
C2= (((conector(msg[21:23]) & 0x3F )<< 6)) + (conector(msg[23:25]) & 0x3F)
C3= (conector(msg[23:25]) >> 6)
C4= (conector(msg[21:23]) >> 6)
C5= ((conector(msg[17:19]) & 1) << 10) + (conector(msg[19:21]) >> 6)
C6= (conector(msg[19:21]) & 0x3F)
prtemp_medido=conector(msg[25:27])
pressao_medido=conector(msg[27:29])
UTI= (8 * C5) + 20224
dT= prtemp_medido - UTI
prtemp_calc= (200 + (dT * (C6+50)/float(1024)))/float(10)
OFF= ((C2*4) +(((C4-512)*dT))/float(4096))
SENS= (C1 + (C3*dT)/float(1024))+ 24576
X=SENS*((pressao_medido-7168)/float(16384)) - OFF
pressao_calc= (X*(100/float(32))+ (250*100))/100
self.pressure = pressao_calc
try:
nodeNumber = nodeList.index(self.node)
except ValueError:
nodeList.append(self.node)
nodeNumber = nodeList.index(self.node)
node = "Node" + str(nodeNumber)
humidade = "Humidade" + str(nodeNumber)
temperatura = "Temperatura" + str(nodeNumber)
luminosidade = "Luminosidade" + str(nodeNumber)
pressao = "Pressao" + str(nodeNumber)
self.data = {node: self.node, humidade: self.humidade, temperatura: self.temperatura, \
luminosidade: self.light, pressao: self.pressure}
else:
self.tipe = "abnormal"
return
return