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/dev/dsp No such file or directory

Ahmed ElSayed
Prodigy 30 points
Other Parts Discussed in Thread: OMAP-L137, OMAP5912

i am a student who is completely new to the OMAP boards but i was trying to learn how to compile and run a simple mp3 player like madplay on the board i have OMAP-L137 EMV

 

but after compiling all the libraries the mp3 program needs and compiling the program itself according to this lab procedures file (http://ee.uttyler.edu/omap/labs/LAB_DOCUMENTS/madplay/Madplay_installation_final.doc)

i got this error while trying to run an mp3 file

Audio: /dev/dsp: no such file or directory

in that tutorial they were using OMAP5912 board, while i am using the OMAP-L137 EVM board. should i do extra steps to load the dsp driver???

any help is highly appreciated, and if there are any educational materials that you can redirect me to regrading this board and the ARM/Linux development i would be really glad to take a look at them.

 

 

Thank you very much

  • 0
    TI__Genius 14545 points

    Ahmed,

    Drivers for TI devices are sometimes device specific so you may have to change the code in the package seeing that you are using a different TI device.

  • 0 in reply to dabuan
    Prodigy 30 points

    Hi Drew,

     

    thank you for your suggestion, but excuse my complete lack of experience, when you say specific driver can i use the iUniveral + ALSA driver? or are you talking about a different type of drivers?

    i am saying so because i came across the following wiki page 

    http://processors.wiki.ti.com/index.php/OMAP-L137_iUniversal_%2B_ALSA_driver

     

    is that what i should be looking into??

     

    thank you

     

    ~Ahmed

  • 0 in reply to Ahmed ElSayed
    TI__Genius 14545 points

    Ahmed,

     

       I am not an expert at Linux, but from your link I gathered the iUniversal is a Framework that is supplied with the Codec Engine Package that you can use to run the ALSA driver.

    I'm not positive, but I'm fairly certain that iUniversal is a Framework that is used by the Codec Engine. You will want to read through the Codec Engine Documentation to verify.

     

      If you are not familiar with the framework concept, it a general sense, it just defines a code architecture which presents a unified view to all your drivers as well as other tasks that need to run on the CPU.

  • 0 in reply to dabuan
    Prodigy 30 points

    Hi Drew,

     

    thank you very much for your help. i am starting to understand how the OMAP board works.

    i will continue to learn and experiment with the board.

    thank you very much

     

    ~Ahmed