Hi, On the git code there is now new_charp() python method - at least in the wrapper which got generated on my system.
Inside the complete.py example there is no read at all neither a read_pins nor a read_data. On 0.19 there is a new_charp which is OK, but on 0.19 I get an usb_bulk_write error -2 on ftdi.ftdi_write_data So either code base I try I am a little bit stuck.... -------- Original-Nachricht -------- > Datum: Thu, 19 Jan 2012 14:07:33 -0700 > Von: Chris Zeh <[email protected]> > An: [email protected] > Betreff: Re: python ftdi.read_data > Hi Lazarus, > > It's been awhile since I've worked with the libftdi library using > Python, and I think there might have been some SWIG changes since last > I used it, but have a look at this message from the mailinglist: > http://developer.intra2net.com/mailarchive/html/libftdi/2011/msg00154.html > > At that time, you were required to create a pointer wrapper in order > to do reads from the device, like so: > #Read the Pins (Bitbang mode) > pins = ftdi.new_charp() > ret = ftdi.ftdi_read_pins(ftdic,pins) > print ftdi.charp_value(pins) > > I vaguely remember seeing a message from someone who really knew SWIG > well and may have revamped the Python stuff. So, hope that helps, but > it may be completely irrelevant at this time :-) > > > Best regards, > Chris > > > > > On Thu, Jan 19, 2012 at 1:54 PM, Lazarus Longitudis <[email protected]> > wrote: > > Hi, > > > > Maybee I call the function wrong. > > Anyone with an example - the python examples do not include a read... > > If I do: > > new_data =3D ftdi.read_data(ftdic, wrote) > > I get a seg fault.... > > > > > > best regards, > > Lazarus > > -------- Original-Nachricht -------- > >> Datum: Wed, 18 Jan 2012 14:05:36 +0100 > >> Von: "Lazarus Longitudis" <[email protected]> > >> An: [email protected] > >> Betreff: python ftdi.read_data > > > >> > >> Hi, > >> > >> I am working with the current git code. > >> Was trying to use the python wrapper, it works mostly but the > >> ftdi.read_data call seems to be messed up. > >> > >> Python says the function requires only two arguments, the context and > an > >> integer, obviously the target buffer pointer is missing. > >> > >> I have compared the swig generated ftdi_wrap.c against 0.19 and it is > >> clear to see that the parameter parsing is broken here. > >> > >> any ideas? > >> > >> 0.19: > >> if (!PyArg_ParseTuple(args,(char > >> *)"OOO:ftdi_read_data",&obj0,&obj1,&obj2)) SWIG_fail; > >> res1 = SWIG_ConvertPtr(obj0, &argp1,SWIGTYPE_p_ftdi_context, 0 | > 0 ); > >> if (!SWIG_IsOK(res1)) { > >> SWIG_exception_fail(SWIG_ArgError(res1), "in method '" > >> "ftdi_read_data" "', argument " "1"" of type '" "struct ftdi_context > *""'"); > >> } > >> arg1 = (struct ftdi_context *)(argp1); > >> res2 = SWIG_AsCharPtrAndSize(obj1, &buf2, NULL, &alloc2); > >> if (!SWIG_IsOK(res2)) { > >> SWIG_exception_fail(SWIG_ArgError(res2), "in method '" > >> "ftdi_read_data" "', argument " "2"" of type '" "unsigned char *""'"); > >> } > >> arg2 = (unsigned char *)(buf2); > >> ecode3 = SWIG_AsVal_int(obj2, &val3); > >> if (!SWIG_IsOK(ecode3)) { > >> SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" > >> "ftdi_read_data" "', argument " "3"" of type '" "int""'"); > >> } > >> arg3 = (int)(val3); > >> result = (int)ftdi_read_data(arg1,arg2,arg3); > >> resultobj = SWIG_From_int((int)(result)); > >> return resultobj; > >> > >> git: > >> arg2 = &temp2; > >> if (!PyArg_ParseTuple(args,(char *)"OO:read_data",&obj0,&obj1)) > >> SWIG_fail; > >> res1 = SWIG_ConvertPtr(obj0, &argp1,SWIGTYPE_p_ftdi_context, 0 | > 0 ); > >> if (!SWIG_IsOK(res1)) { > >> SWIG_exception_fail(SWIG_ArgError(res1), "in method '" > "read_data" > >> "', argument " "1"" of type '" "struct ftdi_context *""'"); > >> } > >> arg1 = (struct ftdi_context *)(argp1); > >> ecode3 = SWIG_AsVal_int(obj1, &val3); > >> if (!SWIG_IsOK(ecode3)) { > >> SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" > "read_data" > >> "', argument " "3"" of type '" "int""'"); > >> } > >> arg3 = (int)(val3); > >> result = (int)ftdi_read_data(arg1,arg2,arg3); > >> resultobj = SWIG_From_int((int)(result)); > >> if (SWIG_IsTmpObj(res2)) { > >> resultobj = SWIG_Python_AppendOutput(resultobj, > >> SWIG_From_char((*arg2))); > >> } else { > >> int new_flags = SWIG_IsNewObj(res2) ? (SWIG_POINTER_OWN | 0 ) > : 0 ; > >> resultobj = SWIG_Python_AppendOutput(resultobj, > >> SWIG_NewPointerObj((void*)(arg2), SWIGTYPE_p_unsigned_char, > new_flags)); > >> } > >> return resultobj; > >> fail: > >> > >> -- > >> Empfehlen Sie GMX DSL Ihren Freunden und Bekannten und wir > >> belohnen Sie mit bis zu 50,- Euro! https://freundschaftswerbung.gmx.de > >> > >> -- > >> libftdi - see http://www.intra2net.com/en/developer/libftdi for > details. > >> To unsubscribe send a mail to > [email protected] > >> > >> > > > > -- > > Empfehlen Sie GMX DSL Ihren Freunden und Bekannten und wir > > belohnen Sie mit bis zu 50,- Euro! https://freundschaftswerbung.gmx.de > > > > -- > > libftdi - see http://www.intra2net.com/en/developer/libftdi for details. > > To unsubscribe send a mail to > [email protected] > > > > -- > libftdi - see http://www.intra2net.com/en/developer/libftdi for details. > To unsubscribe send a mail to [email protected] > > -- Empfehlen Sie GMX DSL Ihren Freunden und Bekannten und wir belohnen Sie mit bis zu 50,- Euro! https://freundschaftswerbung.gmx.de -- libftdi - see http://www.intra2net.com/en/developer/libftdi for details. 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