Egor Zindy wrote:
#!/usr/bin/env python
"""
A generic chipid library based on ctypes
This module handles most of the functions in FTChipID.dll
PROBLEM:
FTID_GetDeviceL ocationID doesn't work...
FTID_GetDeviceC hipID doesn't work...
Well, not exactly true.
Works with 2 devices plugged in and for device with id 1.
Does not work for device with id 0... What am I doing wrong?!?!?!?!?! ?!
How does it work?
relies on ctypes and ftchipid.dll, was only tested in windows XP
the chipid dll (1.1.0) from here: http://www.ftdichip.com/Projects/FTDIChip-ID.htm
for testing, need the the ftd2xx module http://pypi.python.org/pypi/ftd2xx/0.1
and the ftd2xx.dll, which comes with the driver install
The latest version of this file is stored in my google code repository:
Copyright (c) 2008 Egor Zindy <ezindy@gmail.c om>
Released under the MIT licence.
"""
# Permission is hereby granted, free of charge, to any person obtaining a
# copy of this software and associated documentation files (the "Software") ,
# to deal in the Software without restriction, including without limitation
# the rights to use, copy, modify, merge, publish, distribute, sublicense,
# and/or sell copies of the Software, and to permit persons to whom the
# Software is furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY ,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT . IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
# DEALINGS IN THE SOFTWARE.
__author__ = "Egor Zindy <ezindy@gmail.c om>"
__copyright__ = "Copyright (c) 2008 Egor Zindy"
__license__ = "MIT"
__version__ = "0.1"
__date= "2008-07-10"
__status__ = "Alpha"
import ctypes
import ctypes.wintypes
import sys
STRING = ctypes.c_char_p
if sys.platform == 'win32':
DWORD = ctypes.wintypes .DWORD
else:
DWORD = ctypes.c_ulong
#calling the dll
ftchipid=ctypes .windll.ftchipi d
class DeviceError(Exc eption):
"""Exceptio n class for status messages"""
def __init__(self, value):
self.value = value
def __str__(self):
return repr(self.value )
def FTID_GetNumDevi ces():
n = DWORD()
status = ftchipid.FTID_G etNumDevices(ct ypes.byref(n))
if status != FTID_SUCCESS:
raise DeviceError,FTI D_GetErrorCodeS tring("EN",stat us)
return n.value
def FTID_GetDeviceS erialNumber(Dev iceIndex):
s = ctypes.create_s tring_buffer(25 6)
status = ftchipid.FTID_G etDeviceSerialN umber(DeviceInd ex, s, 256)
if status != FTID_SUCCESS:
raise DeviceError,FTI D_GetErrorCodeS tring("EN",stat us)
return s.value
def FTID_GetDeviceL ocationID(Devic eIndex):
n = DWORD()
status = ftchipid.FTID_G etDeviceLocatio nID(DeviceIndex , ctypes.byref(n) )
if status != FTID_SUCCESS:
raise DeviceError,FTI D_GetErrorCodeS tring("EN",stat us)
return n.value
def FTID_GetDeviceC hipID(DeviceInd ex):
n = DWORD()
status = ftchipid.FTID_G etDeviceChipID( DeviceIndex, ctypes.byref(n) )
if status != FTID_SUCCESS:
raise DeviceError,FTI D_GetErrorCodeS tring("EN",stat us)
return n.value
def FTID_GetDeviceD escription(Devi ceIndex):
s = ctypes.create_s tring_buffer(25 6)
status = ftchipid.FTID_G etDeviceDescrip tion(DeviceInde x, s, 256)
if status != FTID_SUCCESS:
raise DeviceError,FTI D_GetErrorCodeS tring("EN",stat us)
return s.value
def FTID_GetDllVers ion():
s = ctypes.create_s tring_buffer(25 6)
status = ftchipid.FTID_G etDllVersion(s, 256)
if status != FTID_SUCCESS:
raise DeviceError,FTI D_GetErrorCodeS tring("EN",stat us)
return s.value
def FTID_GetErrorCo deString(lpLang uage, ErrorCode):
sl = STRING(lpLangua ge)
s = ctypes.create_s tring_buffer(25 6)
status = ftchipid.FTID_G etErrorCodeStri ng(sl,ErrorCode ,s,256)
return s.value
#ChipID errors...
FTID_SUCCESS = 0
FTID_INVALID_HA NDLE = 1
FTID_DEVICE_NOT _FOUND = 2
FTID_DEVICE_NOT _OPENED = 3
FTID_IO_ERROR = 4
FTID_INSUFFICIE NT_RESOURCES = 5
FTID_BUFER_SIZE _TOO_SMALL = 20
FTID_PASSED_NUL L_POINTER = 21
FTID_INVALID_LA NGUAGE_CODE = 22
FTID_INVALID_ST ATUS_CODE = 0xFFFFFFFF
#testing...
if __name__ == '__main__':
import ftd2xx
device = ftd2xx.open()
if 1:
print "\nDll version",
v = FTID_GetDllVers ion()
print v
n = FTID_GetNumDevi ces()
print "\nNumber of devices:",n
for i in range(n):
if 0:
print "\nChip ID:",
v = FTID_GetDeviceC hipID(i)
print i,"0x%08lX" % v
if 1:
print "\nLocation ID:",
v = FTID_GetDeviceL ocationID(i)
print i,"0x%08lX" % v
if 1:
print "\nSerial number:",
v = FTID_GetDeviceS erialNumber(i)
print i,v
if 1:
print "\nDescription: ",
v = FTID_GetDeviceD escription(i)
print i,v
device.close()
Dear List,
>
This one is way beyond my comprehension skills, I just don't
understand what I'm doing wrong.
>
I am trying to read the chipid from an FTDI chip based USB key
(DLP-D, http://www.ftdichip.com/Products/Eva...Kits/DLP-D.htm ),
using:
>
- the ftd2xx module http://pypi.python.org/pypi/ftd2xx/0.1
- the ftd2xx.dll which comes with the driver install
- the chipid dll (1.1.0) from here:
- a ctypes interface I wrote by hand (only 7 functions to wrap, I
thought it'd be easy!)
>
The ftd2xx is used for testing, to open / close the device.
>
My Problem is that neither of the following two wrapped functions
(with the exact same arguments) return the right result (full
chipid.py library attached):
>
def FTID_GetDeviceL ocationID(Devic eIndex):
n = DWORD()
status = ftchipid.FTID_G etDeviceLocatio nID(DeviceIndex ,
ctypes.byref(n) )
>
if status != FTID_SUCCESS:
raise DeviceError,FTI D_GetErrorCodeS tring("EN",stat us)
>
return n.value
>
def FTID_GetDeviceC hipID(DeviceInd ex):
n = DWORD()
status = ftchipid.FTID_G etDeviceChipID( DeviceIndex,
ctypes.byref(n) )
>
if status != FTID_SUCCESS:
raise DeviceError,FTI D_GetErrorCodeS tring("EN",stat us)
>
return n.value
>
* On my machine (XP, 32 bits), if I plug two keys in, I can get the
device chip id from the device with index=1. The one with index=0
always gives the message "Invalid device handle."
* I get the wrong location id as well, 0 instead of 0x21...
* the FTID_GetNumDevi ces function also uses a byref, c_ulong and works.
* FTDI's win32 console example returns the right results (and uses c
unsigned longs) - available from
>
Any help appreciated!
>
Regards,
Egor
>
>
This one is way beyond my comprehension skills, I just don't
understand what I'm doing wrong.
>
I am trying to read the chipid from an FTDI chip based USB key
(DLP-D, http://www.ftdichip.com/Products/Eva...Kits/DLP-D.htm ),
using:
>
- the ftd2xx module http://pypi.python.org/pypi/ftd2xx/0.1
- the ftd2xx.dll which comes with the driver install
- the chipid dll (1.1.0) from here:
- a ctypes interface I wrote by hand (only 7 functions to wrap, I
thought it'd be easy!)
>
The ftd2xx is used for testing, to open / close the device.
>
My Problem is that neither of the following two wrapped functions
(with the exact same arguments) return the right result (full
chipid.py library attached):
>
def FTID_GetDeviceL ocationID(Devic eIndex):
n = DWORD()
status = ftchipid.FTID_G etDeviceLocatio nID(DeviceIndex ,
ctypes.byref(n) )
>
if status != FTID_SUCCESS:
raise DeviceError,FTI D_GetErrorCodeS tring("EN",stat us)
>
return n.value
>
def FTID_GetDeviceC hipID(DeviceInd ex):
n = DWORD()
status = ftchipid.FTID_G etDeviceChipID( DeviceIndex,
ctypes.byref(n) )
>
if status != FTID_SUCCESS:
raise DeviceError,FTI D_GetErrorCodeS tring("EN",stat us)
>
return n.value
>
* On my machine (XP, 32 bits), if I plug two keys in, I can get the
device chip id from the device with index=1. The one with index=0
always gives the message "Invalid device handle."
* I get the wrong location id as well, 0 instead of 0x21...
* the FTID_GetNumDevi ces function also uses a byref, c_ulong and works.
* FTDI's win32 console example returns the right results (and uses c
unsigned longs) - available from
>
Any help appreciated!
>
Regards,
Egor
>
#!/usr/bin/env python
"""
A generic chipid library based on ctypes
This module handles most of the functions in FTChipID.dll
PROBLEM:
FTID_GetDeviceL ocationID doesn't work...
FTID_GetDeviceC hipID doesn't work...
Well, not exactly true.
Works with 2 devices plugged in and for device with id 1.
Does not work for device with id 0... What am I doing wrong?!?!?!?!?! ?!
How does it work?
relies on ctypes and ftchipid.dll, was only tested in windows XP
the chipid dll (1.1.0) from here: http://www.ftdichip.com/Projects/FTDIChip-ID.htm
for testing, need the the ftd2xx module http://pypi.python.org/pypi/ftd2xx/0.1
and the ftd2xx.dll, which comes with the driver install
The latest version of this file is stored in my google code repository:
Copyright (c) 2008 Egor Zindy <ezindy@gmail.c om>
Released under the MIT licence.
"""
# Permission is hereby granted, free of charge, to any person obtaining a
# copy of this software and associated documentation files (the "Software") ,
# to deal in the Software without restriction, including without limitation
# the rights to use, copy, modify, merge, publish, distribute, sublicense,
# and/or sell copies of the Software, and to permit persons to whom the
# Software is furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY ,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT . IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
# DEALINGS IN THE SOFTWARE.
__author__ = "Egor Zindy <ezindy@gmail.c om>"
__copyright__ = "Copyright (c) 2008 Egor Zindy"
__license__ = "MIT"
__version__ = "0.1"
__date= "2008-07-10"
__status__ = "Alpha"
import ctypes
import ctypes.wintypes
import sys
STRING = ctypes.c_char_p
if sys.platform == 'win32':
DWORD = ctypes.wintypes .DWORD
else:
DWORD = ctypes.c_ulong
#calling the dll
ftchipid=ctypes .windll.ftchipi d
class DeviceError(Exc eption):
"""Exceptio n class for status messages"""
def __init__(self, value):
self.value = value
def __str__(self):
return repr(self.value )
def FTID_GetNumDevi ces():
n = DWORD()
status = ftchipid.FTID_G etNumDevices(ct ypes.byref(n))
if status != FTID_SUCCESS:
raise DeviceError,FTI D_GetErrorCodeS tring("EN",stat us)
return n.value
def FTID_GetDeviceS erialNumber(Dev iceIndex):
s = ctypes.create_s tring_buffer(25 6)
status = ftchipid.FTID_G etDeviceSerialN umber(DeviceInd ex, s, 256)
if status != FTID_SUCCESS:
raise DeviceError,FTI D_GetErrorCodeS tring("EN",stat us)
return s.value
def FTID_GetDeviceL ocationID(Devic eIndex):
n = DWORD()
status = ftchipid.FTID_G etDeviceLocatio nID(DeviceIndex , ctypes.byref(n) )
if status != FTID_SUCCESS:
raise DeviceError,FTI D_GetErrorCodeS tring("EN",stat us)
return n.value
def FTID_GetDeviceC hipID(DeviceInd ex):
n = DWORD()
status = ftchipid.FTID_G etDeviceChipID( DeviceIndex, ctypes.byref(n) )
if status != FTID_SUCCESS:
raise DeviceError,FTI D_GetErrorCodeS tring("EN",stat us)
return n.value
def FTID_GetDeviceD escription(Devi ceIndex):
s = ctypes.create_s tring_buffer(25 6)
status = ftchipid.FTID_G etDeviceDescrip tion(DeviceInde x, s, 256)
if status != FTID_SUCCESS:
raise DeviceError,FTI D_GetErrorCodeS tring("EN",stat us)
return s.value
def FTID_GetDllVers ion():
s = ctypes.create_s tring_buffer(25 6)
status = ftchipid.FTID_G etDllVersion(s, 256)
if status != FTID_SUCCESS:
raise DeviceError,FTI D_GetErrorCodeS tring("EN",stat us)
return s.value
def FTID_GetErrorCo deString(lpLang uage, ErrorCode):
sl = STRING(lpLangua ge)
s = ctypes.create_s tring_buffer(25 6)
status = ftchipid.FTID_G etErrorCodeStri ng(sl,ErrorCode ,s,256)
return s.value
#ChipID errors...
FTID_SUCCESS = 0
FTID_INVALID_HA NDLE = 1
FTID_DEVICE_NOT _FOUND = 2
FTID_DEVICE_NOT _OPENED = 3
FTID_IO_ERROR = 4
FTID_INSUFFICIE NT_RESOURCES = 5
FTID_BUFER_SIZE _TOO_SMALL = 20
FTID_PASSED_NUL L_POINTER = 21
FTID_INVALID_LA NGUAGE_CODE = 22
FTID_INVALID_ST ATUS_CODE = 0xFFFFFFFF
#testing...
if __name__ == '__main__':
import ftd2xx
device = ftd2xx.open()
if 1:
print "\nDll version",
v = FTID_GetDllVers ion()
print v
n = FTID_GetNumDevi ces()
print "\nNumber of devices:",n
for i in range(n):
if 0:
print "\nChip ID:",
v = FTID_GetDeviceC hipID(i)
print i,"0x%08lX" % v
if 1:
print "\nLocation ID:",
v = FTID_GetDeviceL ocationID(i)
print i,"0x%08lX" % v
if 1:
print "\nSerial number:",
v = FTID_GetDeviceS erialNumber(i)
print i,v
if 1:
print "\nDescription: ",
v = FTID_GetDeviceD escription(i)
print i,v
device.close()