def ret_crc(raw_data,length,cmd,data=None):
did0 = ord(raw_data[3])
did1 = ord(raw_data[4])
did2 = ord(raw_data[5])
did3 = ord(raw_data[6])
did4 = ord(raw_data[7])
did5 = ord(raw_data[8])
did6 = ord(raw_data[9])
did7 = ord(raw_data[10])
return_crc = [length, did0, did1, did2, did3, did4, did5, did6, did7, cmd]
if data != None:
for i in data:
return_crc.append(i)
rtncrc32 = myCrc.cal_crc(return_crc)
rtncrc3 = int(rtncrc32[0:2],16)
rtncrc2 = int(rtncrc32[2:4],16)
rtncrc1 = int(rtncrc32[4:6],16)
rtncrc0 = int(rtncrc32[6:8],16)
return [rtncrc3,rtncrc2,rtncrc1,rtncrc0]
def handle_data(data):
all_len = len(data)
#length is wrong
if(all_len<11):
print 'wrong length,unknown device!'
return None
r_sof0 = ord(data[0])
r_sof1 = ord(data[1])
r_lenth = ord(data[2])
r_did0 = ord(data[3])
r_did1 = ord(data[4])
r_did2 = ord(data[5])
r_did3 = ord(data[6])
r_did4 = ord(data[7])
r_did5 = ord(data[8])
r_did6 = ord(data[9])
r_did7 = ord(data[10])
r_cmd = ord(data[11])
# r_data = []
r_crc0 = '%02x' % ord(data[-4])
r_crc1 = '%02x' % ord(data[-3])
r_crc2 = '%02x' % ord(data[-2])
r_crc3 = '%02x' % ord(data[-1])
# crc 7F 7F 0a 11 22 33 44 55 66 77 88 10 01 FD 0E 3C 53
lenth_data = all_len - 7 - 9
my_crc = [r_lenth, r_did0, r_did1, r_did2, r_did3, r_did4, r_did5, r_did6, r_did7, r_cmd]
for x in xrange(lenth_data):
my_crc.append(ord(data[11 + x + 1]))
# r_data.append(ord(data[11 + x + 1]))
mycrc32 = myCrc.cal_crc(my_crc)
mycrc0 = mycrc32[0:2]
mycrc1 = mycrc32[2:4]
mycrc2 = mycrc32[4:6]
mycrc3 = mycrc32[6:8]
#======================match SOF===========================================
#match 0x7f 0x7f #match cmd=0x91 DATA[0]=0x01/0x02/0x03
if((r_sof0 != 0x7f) or (r_sof1 != 0x7f)):
# print 'wrong head'
log.warning('wrong head')
return ret_pack(data,0x0A,0x91,[0x02,])
#======================match length =======================================
#match len #match cmd=0x91 DATA[0]=0x01/0x02/0x03
if(r_lenth != all_len-7):
log.warning('wrong lenth')
return ret_pack(data,0x0A,0x91, [0x03,])
#======================match crc===========================================
#match crc32 #match cmd=0x91 DATA[0]=0x01/0x02/0x03
if (mycrc0 != r_crc0) or (mycrc1 != r_crc1) or (mycrc2 != r_crc2) or (mycrc3 != r_crc3):
log.warning('wrong crc')
return ret_pack(data,0x0A,0x91, [0x01,])
#======================match cmd===========================================
#match cmd=0x10
if(r_cmd == 0x10):
is_install = ord(data[12])
if is_install == 0x01:#already done
log.warning('did is already online')
# return ret_pack(data, 0x09, 0x10)
return ret_pack(data, 0x0a, 0x10,[0x00,])
elif is_install == 0x00:#first do,5*60s=0x01,0x2c
log.warning('did is going to be online')
# return ret_pack(data, 0x0d, 0x10, [0x01,0x2c,0x01,0x2c])
return ret_pack(data, 0x0e, 0x10, [0x00,0x00,0x3c,0x00,0x01])
#match cmd=0x20 data=null len = 0x09
elif(r_cmd == 0x20):
log.info('did is sending data')
#TODO add to mysql by thread
rest = mydbhandle.add_to_db(data)
return ret_pack(data, 0x0a, 0x20,[0x00,])
#else cmd is unknown
return ret_pack(data, 0x0a, 0x91,[0x04,])