bk precision 1786B Power supply - set and read voltage and current python script

#----- python ----


import sys
import serial
import time
import string
import binascii
import time
import os

try:

 filename1 = "Power-Consumption"+time.strftime("%Y-%m-%d-%H%M%S")+".csv"
 print filename1
 on_time = 1 # in seconds
 mac_v = 12
 actual_v = 12
 actual_a = 3   # Amp
 sleep_cmd_int = 0.1 # time for gap between commands
 v1 = 0 # currect mA
 a1 = 0 # voltage V

 ser = serial.Serial('COM14',38400,timeout=1)
 print ser.portstr


#------------- enable remote management ---------------------------
 a0 = 'AA';a1 = '00';a2 = '20';a3 = '01';a4 = '00';a5 = '00';a6 = '00'
 a7 = '00';a8 = '00';a9 = '00';a10 = '00';a11 = '00';a12 = '00';a13 = '00'
 a14 = '00';a15 = '00';a16 = '00';a17 = '00';a18 = '00';a19 = '00';a20 = '00'
 a21 = '00';a22 = '00';a23 = '00';a24 = '00';a25 = '00'

 btsend1 = [int(a0,16),int(a1,16),int(a2,16),int(a3,16),int(a4,16),int(a5,16),int(a6,16),int(a7,16),int(a8,16),int(a9,16),int(a10,16),int(a11,16),int(a12,16),int(a13,16),int(a14,16),int(a15,16),int(a16,16),int(a17,16),int(a18,16),int(a19,16),int(a20,16),int(a21,16),int(a22,16),int(a23,16),int(a24,16),int('00',16)]

 cksum1 = hex(sum(btsend1))[len(hex(sum(btsend1)))-2:len(hex(sum(btsend1)))]

 btsend1[25] = int(cksum1,16)

 s = bytearray(btsend1)

 ser.write(s)
 ser.write("\r\n")

# ---- sleep ---

 time.sleep(sleep_cmd_int)

#-------------------Set V---------------------

 a0 = 'AA';a1 = '00';a2 = '23';a3 = 'E0';a4 = '2E';a5 = '00';a6 = '00'
 a7 = '00';a8 = '00';a9 = '00';a10 = '00';a11 = '00';a12 = '00';a13 = '00'
 a14 = '00';a15 = '00';a16 = '00';a17 = '00';a18 = '00';a19 = '00';a20 = '00'
 a21 = '00';a22 = '00';a23 = '00';a24 = '00';a25 = '00'

 btsend1 = [int(a0,16),int(a1,16),int(a2,16),int(a3,16),int(a4,16),int(a5,16),int(a6,16),int(a7,16),int(a8,16),int(a9,16),int(a10,16),int(a11,16),int(a12,16),int(a13,16),int(a14,16),int(a15,16),int(a16,16),int(a17,16),int(a18,16),int(a19,16),int(a20,16),int(a21,16),int(a22,16),int(a23,16),int(a24,16),int('00',16)]

 cksum1 = hex(sum(btsend1))[len(hex(sum(btsend1)))-2:len(hex(sum(btsend1)))]

 btsend1[25] = int(cksum1,16)

 s = bytearray(btsend1)

 ser.write(s)
 ser.write("\r\n")

# ----

 time.sleep(sleep_cmd_int)

#-----------------------set the current---------------------

 a0 = 'AA';a1 = '00';a2 = '24';a3 = 'B8';a4 = '0B';a5 = '00';a6 = '00'
 a7 = '00';a8 = '00';a9 = '00';a10 = '00';a11 = '00';a12 = '00';a13 = '00'
 a14 = '00';a15 = '00';a16 = '00';a17 = '00';a18 = '00';a19 = '00';a20 = '00'
 a21 = '00';a22 = '00';a23 = '00';a24 = '00';a25 = '00'

 btsend1 = [int(a0,16),int(a1,16),int(a2,16),int(a3,16),int(a4,16),int(a5,16),int(a6,16),int(a7,16),int(a8,16),int(a9,16),int(a10,16),int(a11,16),int(a12,16),int(a13,16),int(a14,16),int(a15,16),int(a16,16),int(a17,16),int(a18,16),int(a19,16),int(a20,16),int(a21,16),int(a22,16),int(a23,16),int(a24,16),int('00',16)]

 cksum1 = hex(sum(btsend1))[len(hex(sum(btsend1)))-2:len(hex(sum(btsend1)))]

 btsend1[25] = int(cksum1,16)

 s = bytearray(btsend1)

 ser.write(s)
 ser.write("\r\n")
# ----

 time.sleep(sleep_cmd_int)

# -------   turn on ---
 a0 = 'AA';a1 = '00';a2 = '21';a3 = '01';a4 = '00';a5 = '00';a6 = '00'
 a7 = '00';a8 = '00';a9 = '00';a10 = '00';a11 = '00';a12 = '00';a13 = '00'
 a14 = '00';a15 = '00';a16 = '00';a17 = '00';a18 = '00';a19 = '00';a20 = '00'
 a21 = '00';a22 = '00';a23 = '00';a24 = '00';a25 = '00'

 btsend1 = [int(a0,16),int(a1,16),int(a2,16),int(a3,16),int(a4,16),int(a5,16),int(a6,16),int(a7,16),int(a8,16),int(a9,16),int(a10,16),int(a11,16),int(a12,16),int(a13,16),int(a14,16),int(a15,16),int(a16,16),int(a17,16),int(a18,16),int(a19,16),int(a20,16),int(a21,16),int(a22,16),int(a23,16),int(a24,16),int('00',16)]

 cksum1 = hex(sum(btsend1))[len(hex(sum(btsend1)))-2:len(hex(sum(btsend1)))]

 btsend1[25] = int(cksum1,16)

 s = bytearray(btsend1)

 ser.write(s)
 ser.write("\r\n")

# ------------

 time.sleep(on_time)

#---- flush ---

 ser.flush()
 while 1==1:
  ser.flush()

# ----------read current -------------

  a0 = 'AA';a1 = '00';a2 = '26';a3 = 'B8';a4 = '0B';a5 = '00';a6 = '00'
  a7 = '00';a8 = '00';a9 = '00';a10 = '00';a11 = '00';a12 = '00';a13 = '00'
  a14 = '00';a15 = '00';a16 = '00';a17 = '00';a18 = '00';a19 = '00';a20 = '00'
  a21 = '00';a22 = '00';a23 = '00';a24 = '00';a25 = '00'

  btsend1 = [int(a0,16),int(a1,16),int(a2,16),int(a3,16),int(a4,16),int(a5,16),int(a6,16),int(a7,16),int(a8,16),int(a9,16),int(a10,16),int(a11,16),int(a12,16),int(a13,16),int(a14,16),int(a15,16),int(a16,16),int(a17,16),int(a18,16),int(a19,16),int(a20,16),int(a21,16),int(a22,16),int(a23,16),int(a24,16),int('00',16)]

  cksum1 = hex(sum(btsend1))[len(hex(sum(btsend1)))-2:len(hex(sum(btsend1)))]

  btsend1[25] = int(cksum1,16)

  s = bytearray(btsend1)

  ser.write(s)
  ser.write("\r\n")

# ---- sleep ---

  time.sleep(.1)

# --- flush ---

  ser.flush()

# ---- sleep ---

  time.sleep(.1)

  msg2 = ser.read(1000)

  btreceived1 = list(msg2)
#print btreceived1
  if '\x26' in btreceived1:
   a11 = btreceived1[btreceived1.index('\x26')+1:btreceived1.index('\x26')+3]
   a12 = a11[1].encode('hex')+a11[0].encode('hex')
   a1 = int(a12,16)
   v11 = btreceived1[btreceived1.index('\x26')+3:btreceived1.index('\x26')+7]
   v12 = v11[3].encode('hex')+v11[2].encode('hex')+v11[1].encode('hex')+v11[0].encode('hex')
   print "..."
   print str(a1)+"mA"+" @ "+str(float(int(v12,16))/1000)+"V"+" - "+time.strftime("%Y-%m-%d %H:%M:%S")
   writettoofile = str(a1)+","+str(float(int(v12,16))/1000)+","+time.strftime("%Y%m%d%H%M%S")+"\n"
  #--- open/close file ---
   f1 = open(filename1,'a',0)
   f1.write(writettoofile)
   f1.close

#--- sleep ---
   time.sleep(1)

except:
 print "Something went wrong"
#--- sleep ---
 time.sleep(2)
#----- turn off -------
 a0 = 'AA';a1 = '00';a2 = '21';a3 = '00';a4 = '00';a5 = '00';a6 = '00'
 a7 = '00';a8 = '00';a9 = '00';a10 = '00';a11 = '00';a12 = '00';a13 = '00'
 a14 = '00';a15 = '00';a16 = '00';a17 = '00';a18 = '00';a19 = '00';a20 = '00'
 a21 = '00';a22 = '00';a23 = '00';a24 = '00';a25 = '00'

 btsend1 = [int(a0,16),int(a1,16),int(a2,16),int(a3,16),int(a4,16),int(a5,16),int(a6,16),int(a7,16),int(a8,16),int(a9,16),int(a10,16),int(a11,16),int(a12,16),int(a13,16),int(a14,16),int(a15,16),int(a16,16),int(a17,16),int(a18,16),int(a19,16),int(a20,16),int(a21,16),int(a22,16),int(a23,16),int(a24,16),int('00',16)]

 cksum1 = hex(sum(btsend1))[len(hex(sum(btsend1)))-2:len(hex(sum(btsend1)))]

 btsend1[25] = int(cksum1,16)

 s = bytearray(btsend1)

 ser.write(s)
 ser.write("\r\n")


#--------------Disable remote -------


 a0 = 'AA';a1 = '00';a2 = '20';a3 = '00';a4 = '00';a5 = '00';a6 = '00'
 a7 = '00';a8 = '00';a9 = '00';a10 = '00';a11 = '00';a12 = '00';a13 = '00'
 a14 = '00';a15 = '00';a16 = '00';a17 = '00';a18 = '00';a19 = '00';a20 = '00'
 a21 = '00';a22 = '00';a23 = '00';a24 = '00';a25 = '00'

 btsend1 = [int(a0,16),int(a1,16),int(a2,16),int(a3,16),int(a4,16),int(a5,16),int(a6,16),int(a7,16),int(a8,16),int(a9,16),int(a10,16),int(a11,16),int(a12,16),int(a13,16),int(a14,16),int(a15,16),int(a16,16),int(a17,16),int(a18,16),int(a19,16),int(a20,16),int(a21,16),int(a22,16),int(a23,16),int(a24,16),int('00',16)]

 cksum1 = hex(sum(btsend1))[len(hex(sum(btsend1)))-2:len(hex(sum(btsend1)))]

 btsend1[25] = int(cksum1,16)

 s = bytearray(btsend1)

 ser.write(s)
 ser.write("\r\n")

simplemediawiki edit example - python

 # ---------------- python code start ----------------------


from simplemediawiki import MediaWiki

wiki = MediaWiki('http://192.168.20.20/mediawiki/api.php')

myUserName = "xxx"
myPassword = "xxx"


#logs in
loginData = wiki.call({'action':'login', 'lgname': myUserName,'lgpassword': myPassword})

print loginData

#resubmission of the login token
personalLoginData = wiki.call({'action':'login', 'lgname': myUserName ,'lgpassword': myPassword,'lgtoken': loginData['login']['token'$

print "[][][]]"
print personalLoginData
print "[][][][]"
returnData = wiki.call({'action':'query','prop':'info', 'titles':'Main_Page','intoken':'edit'});

print returnData

  # get the edittoken:

edittoken = returnData['query']['pages']['1']['edittoken']
print "----"
print edittoken
print "----"

results = wiki.call({'action':'edit','title':"testwiki1_Page",'section':'new','text':"new page sample text",'token':edittoken})

print results


 # ---------------- python code end ----------------------

CISCO IPv6 PPPOE server

I have been trying to test a CPE router with IPv6 PPPoE client, and finally manage to setup a PPPoE server in a cisco 7K witch supports IPv6. Now the set-up seems to establish an IPv6 link local address in the ppp0 interface in the CPE router and the br0 interface in the router is obtaining a global IPv6 address using DHCPv6. I will update this post with more details soon  . CISCO running config is given below,


-----------------------

version 12.4
!
ipv6 unicast-routing
ipv6 cef
ipv6 dhcp pool Clients
 prefix-delegation pool DhcpPool
!
ipv6 dhcp pool dhcpv6
 prefix-delegation pool dhcpv6-pool1 lifetime 1800 600
 address prefix 2001:1::/64
 dns-server 2001:1::1
 domain-name dhcpv6.com
!
!
multilink bundle-name authenticated
!

memory-size iomem 0
username cisco password 0 cisco
archive
 log config
  hidekeys
!
bba-group pppoe GROUP
!
bba-group pppoe GROUPA
 virtual-template 1
!
!
interface Loopback0
 ip address 10.12.0.1 255.255.255.0
 ipv6 address 2001:6::1/64
 ipv6 enable
!
interface Loopback1
 no ip address
!
interface FastEthernet0/0
 no ip address
 duplex auto
 speed auto
 ipv6 address 2001:2::1/64
 ipv6 enable
 ipv6 nd managed-config-flag
 ipv6 dhcp server dhcpv6
 pppoe enable group GROUPA
!
interface FastEthernet0/1
 ip address dhcp
 duplex auto
 speed auto
 ipv6 address 2001:1::1/64
!
interface Virtual-Template1
 ip unnumbered Loopback0
 ipv6 unnumbered Loopback0
 ipv6 enable
 ipv6 nd managed-config-flag
 ipv6 nd other-config-flag
 ipv6 nd router-preference High
 no ipv6 nd ra suppress
 ipv6 dhcp server dhcpv6
 peer default ip address pool ppppool1
 peer default ipv6 pool dhcpv6-pool1
 ppp authentication pap chap callin
!
ip local pool ppppool1 10.12.0.50 10.12.0.254
ip forward-protocol nd
no ip http server
no ip http secure-server
!
ipv6 local pool dhcpv6-pool1 2001:5::/32 48
!

----------------------------------------------

L2TP with MPPE

For my understanding L2TP usually use IPsec for security, but today I tested a cpe router which has a L2TP client which use MPPE. I was puzzled but then I figured out that CISCO ios support L2TP with MPPE. You just need to add the line "ppp encrypt mppe auto" to the virtual template,

---------------------------------------------------------------------

vpdn-group L2TP-pure

 accept-dialin

  protocol l2tp

  virtual-template 52

interface Virtual-Template52

 ip unnumbered Loopback1

 ip nat inside

 ip virtual-reassembly

 peer default ip address pool L2TP-POOL

ppp encrypt mppe auto

ip local pool L2TP-POOL 192.168.60.10 192.168.60.100

---------------------------------------------------------------------