Re^2: help with XS pointers

Hi bliako, yes, you're right when assign the NULL value to the $device variable, yesterday I found a similar example from this site: http://sdr.f4gkr.org/trac/browser/gkSDR/Logiciel/rwhw/rtlsdr_iface.cpp?rev=9 which confirm also the idea of the status code (the correct return would be "0"). the initial idea was right but the return code is the same as before:

device name 'Generic RTL2832U OEM'
SDR::RTLSDR::rtlsdr_open: dev is not of type RTLSDRDevice_TPtrPtr at s
+dr.pl line 13.
[download]

Regards Edoardo M.

Comment on Re^2: help with XS pointers Download Code

Replies are listed 'Best First'.
Re^3: help with XS pointers by bliako (Monsignor) on Jul 31, 2020 at 12:46 UTC
Does that make sense at all? `my $device = SDR::RTLSDR->new(); my $status = rtlsdr_open( \$device , $index); print "status $status for index $index\n";` [download] also see this example perlxstypemap (search for T_PTROBJ_SPECIAL) and the Netconfig example in perlxs Does the error message you cited corresponds for the typemap source code you have shown?	[reply] [d/l]
Re^4: help with XS pointers by Bpl (Scribe) on Jul 31, 2020 at 12:58 UTC
Hi, yes the typemap is the same as before, if I try to change to "T_PTROBJ_SPECIAL" it gives this error: `Downloads/SDR::RTLSDR/SDR (another copy)/typemap' RTLSDR.xs > RTLSDR. +xsc Can't locate object method "xstype" via package "SDR__RTLSDR " (perha +ps you forgot to load "SDR__RTLSDR "?) at /usr/local/share/perl/5.22 +.1/ExtUtils/ParseXS.pm line 1905, <__ANONIO__> line 38. Makefile:359: recipe for target 'RTLSDR.c' failed` [download] the typemap file now is: `GNU nano 2.5.3 File: typemap + TYPEMAP SDR::RTLSDR * T_PTROBJ_SPECIAL SDR::RTLSDR ** T_PTROBJ const char * T_PV int * T_PV char * T_PV unsigned long int T_U_LONG uint8_t T_U_SHORT uint8_t * T_U_SHORT uint16_t T_U_SHORT uint32_t * T_U_SHORT uint32_t T_U_SHORT` [download]	[reply] [d/l] [select]
Re^5: help with XS pointers by bliako (Monsignor) on Jul 31, 2020 at 13:07 UTC
Sorry, I did not say that you must copy it, I meant that that's how they associate a C struct with a Perl object.	[reply]


Don't ask to ask, just ask
	PerlMonks