2009-04-07 10:57:28 how to use libbfdsp functions

Ashish Gupta (INDIA)

Message: 72332

Please explain how i can use the functions provided by the "libbfdsp" library. This one does not appear in the library configuration during uclinux build, Is this integrated with the toolchain.?

I looked at the the following page : -

docs.blackfin.uclinux.org/doku.php?id=toolchain:libbfdsp

but could not find which header files to include.

regards

Ashish

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2009-04-07 15:31:10 Re: how to use libbfdsp functions

Mike Frysinger (UNITED STATES)

Message: 72351

the library is compiled with the toolchain

the manual on analog.com documents the headers

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2009-04-08 14:29:21 Re: how to use libbfdsp functions

David Kasper (UNITED STATES)

Message: 72430

Mike,

I am experiencing compiler errors when using the DSP library functions. At the top of my cpp file I added:

#include <complex.h>

I added the following to the body:

//DSP Library test

complex_fract16 a, b, prod;

a.re = 1;

a.im = 0;

b.re = 8;

b.im = 0;

prod = cmlt_fr16(a, b);

Using bfin-linux-uclibc-g++ I get a warning on the include file and the compiler doesn't find a definion for complex_fract16 type or cmlt_fr16 function as shown below. Any help would be appreciated.

Thanks,

David Kasper

[student@localhost apps]$

[student@localhost apps]$ make

bfin-linux-uclibc-g++ -c -I.. -I../../ -I./sup_sw/libmicrocpp -I./sup_sw/tools/protocols/g2/c++ -I./sup_sw/libmicrocpp/commio -I./sup_sw/libmicrocpp/containers -I./sup_sw/libmicrocpp/fastdelegate -I./sup_sw/libmicrocpp/system -I./sup_sw/tools/protocols/g2/c++/interfaces -I./sup_sw/tools/protocols/g2/c++/src -I./sup_sw/tools/protocols/g2/c++/test -I./sup_sw/uclinux/bf/libs/libdbugmon -I./sup_sw/uclinux/bf/libs/liblog -I./sup_sw/uclinux/bf/libs/libg2 -I./sup_sw/uclinux/bf/libs/libxml -Wall -mfdpic -DBF -O2 SysStatusMonitorApp.cpp -o SysStatusMonitorApp.o

In file included from /home/student/work/toolchain/bfin-linux-uclibc/lib/gcc/bfin-linux-uclibc/4.1.2/include/c++/backward/complex.h:31,

from SysStatusMonitorApp.cpp:22:

/home/student/work/toolchain/bfin-linux-uclibc/lib/gcc/bfin-linux-uclibc/4.1.2/include/c++/backward/backward_warning.h:32:2: warning: #warning This file includes at least one deprecated or antiquated header. Please consider using one of the 32 headers found in section 17.4.1.2 of the C++ standard. Examples include substituting the <X> header for the <X.h> header for C++ includes, or <iostream> instead of the deprecated header <iostream.h>. To disable this warning use -Wno-deprecated.

SysStatusMonitorApp.cpp: In member function ‘virtual void SysStatusMonitorApp::MainLoop()’:

SysStatusMonitorApp.cpp:93: error: ‘complex_fract16’ was not declared in this scope

SysStatusMonitorApp.cpp:93: error: expected `;' before ‘a’

SysStatusMonitorApp.cpp:95: error: ‘a’ was not declared in this scope

SysStatusMonitorApp.cpp:97: error: ‘b’ was not declared in this scope

SysStatusMonitorApp.cpp:100: error: ‘prod’ was not declared in this scope

SysStatusMonitorApp.cpp:100: error: ‘cmlt_fr16’ was not declared in this scope

make: *** [SysStatusMonitorApp.o] Error 1

[student@localhost apps]$

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2009-04-08 16:52:50 Re: how to use libbfdsp functions

Mike Frysinger (UNITED STATES)

Message: 72436

do not build it as C++, use C only

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2009-04-08 19:27:26 Re: how to use libbfdsp functions

David Kasper (UNITED STATES)

Message: 72439

Mike,

I am using the '08-R1.5 toolchain and still have the same problems when a c file was used. I created the simple file below and got compile errors indicating compled_fract16 wasn't found. Any help is appreciated.

Dave

Compiler error:

[student@localhost apps]$ bfin-linux-uclibc-gcc Test.c -o Test.o

Test.c: In function ‘Test’:

Test.c:11: error: ‘complex_fract16’ undeclared (first use in this function)

Test.c:11: error: (Each undeclared identifier is reported only once

Test.c:11: error: for each function it appears in.)

Test.c:11: error: expected ‘;’ before ‘a’

Test.c:13: error: ‘a’ undeclared (first use in this function)

Test.c:15: error: ‘b’ undeclared (first use in this function)

Test.c:18: error: ‘prod’ undeclared (first use in this function)

[student@localhost apps]$