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Altera_Forum's avatar
Altera_Forum
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14 years ago

libjtag_atlantic.so (under linux)

Hello all,

I came to know about "jtag_atlantic" Altera Mega-IP thanks to this forum.

There are several threads already discussing about the IP and examples.

It seems very handy way to sink/source data from FPGA or from PC.

I would like to create software for "jtag_atlantic" under Linux.

I found libjtag_atlantic.so under Altera Quartus directory so I thought it would be easy thing to do.

However, when I tried to compile my test software, I got unexpected errors:

% gcc -o test_link test_link.c -L(ALATERA/LIB_DIR) -ljtag_atlantic

test_link.c:(.text+0x27): undefined reference to `jtagatlantic_open'

test_link.c:(.text+0x6f): undefined reference to `jtagatlantic_close'

test_link.c:(.text+0x8c): undefined reference to `jtagatlantic_get_error'

//

The libjtag_atlantic.so contains the above undefined functions:

% nm (ALATERA/LIB_DIR/libjtag_atlantic.so

...

0000000000003024 T _Z17jtagatlantic_openPKciiS0_

0000000000001e80 T _Z17jtagatlantic_readP12JTAGATLANTICPcj

000000000000206a T _Z18jtagatlantic_closeP12JTAGATLANTIC

0000000000001d36 T _Z18jtagatlantic_flushP12JTAGATLANTIC

0000000000001fa4 T _Z18jtagatlantic_writeP12JTAGATLANTICPKcj

00000000000017b8 T _Z21jtagatlantic_get_infoP12JTAGATLANTICPPKcPiS4_

0000000000001780 T _Z22jtagatlantic_get_errorPPKc

0000000000001cda T _Z22jtagatlantic_wait_openP12JTAGATLANTIC

00000000000017c4 T _Z26jtagatlantic_cable_warningP12JTAGATLANTIC

00000000000017e8 T _Z28jtagatlantic_bytes_availableP12JTAGATLANTIC

...

//

Does anybody use jtag_atlantic under Linux environment?

All examples I found are provided for PC (CygWin) environment and examples are using libjtag_atlantic.a, which is not compatible with Linux platform.

As I'm not familiar with Linux and Software development, any suggestions, any comments are greatly appreciated.

Aki-

4 Replies

  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    14 years ago

    I'm not using Linux, but similar to the respective Windows libraries, the libjtag_atlantic function names are apparently "decorated" names (including a coding for function return and argument types, as required for function overloading in C++). You either need to interface the library from C++ code, or write a respective import library.

    It's a general C versus C++ problem and not particularly related to libjtag_atlantic.
  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    14 years ago

    Hi FvM,

    Thank you for your reply.

    I consulted a software guru in my office and he pointed out the problem (basically the same thing you suggested).

    The API routines are provided in C++ (names are mangled) and it uses an explicit namespace, "JTAGATLANTIC".

    He showed me how to fix.

    I will provide the solution to other Altera users once I confirm all correct operations.

    Thanks,

    Aki-
  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    13 years ago

    Hi HardFault,

    Sorry to disappoint you.

    I could compile my test program but I couldn't get it to work with my simple test design.

    It is unfortunate that Altera didn't make this software interface available to Altera FPGA users.

    If I find a way to make this interface to work or some other similar interface becomes usable, I will post to the forum.

    Sorry!

    Aki-