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Altera_Forum's avatar
Altera_Forum
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8 years ago

How to sum sine waves up by using IP blocks

Hi, My task was to create two different freq. sine waves and sum them up. I defined them as signals but how to sum them by using IP clocks? Can some please help me? You can take a look to my code in attached vhd file. Thx in advance

4 Replies

  • Altera_Forum's avatar
    Altera_Forum
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    8 years ago

    Im not sure what the problem is - why cant you just have:

    q <= sin1 + sin2

    ?
  • Altera_Forum's avatar
    Altera_Forum
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    8 years ago

    it's giving error. It says "can't determine definition of operator ""+"" -- found 0 possible definitions

  • Altera_Forum's avatar
    Altera_Forum
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    8 years ago

    + isn't defined for std_logic_vector. You have signed sine table, why not using signed variables?