How to Use Opencore's I2C IP for Nios?

[Altera_Forum]

hello everyone: 

 I integrated the Opencore's I2C core into SOPC builder.  But I don't know what PIN primitive for the SDA and SCL output should I place in the Quartus2's BDF design? (a Output ,Input or Bidiretional pin?)  Please note that in the Opencore's I2C-spec document,it says that we have to add TRI-state buffers for the SDA and SCL lines.  Please help me to get the I2C core work. thanks very much.  Best Regards.

[Altera_Forum]

Hello trout, 

 If you have integrated the I2C IP from Opencores into your system correctly there are only some more steps to bring it to work.  1. Insert -> Symbol ... 2. 2x primitives -> buffer -> tri 3. 2x primitives -> logic -> not 4. 2x primitives -> pin -> bidir 5. connect "scl_padoen_o" and "sda_padoen_o" to the input of the "not"-logics 6. connect "scl_pad_o" and "sda_pad_o" to the input of the "tri"-buffers 7. connect the output of the "not"-logics to the corresponding output-enables of the "tri"-buffers 8. name the output of the "tri"-buffers "i2c_scl" and "i2c_sda" 9. connect "i2c_scl" and "i2c_sda" to the corresponding inputs of the I2C IP 10. connect "i2c_scl" and "i2c_sda" to "bidir"-pins  That's it!   Bye, niosIIuser   PS: Why can't we upload images? This function would be very helpful.

[Altera_Forum]

It works!Thank you very much,niosIIuser. 

http://forum.niosforum.com/work2/style_emoticons/<#EMO_DIR#>/laugh.gif

[Altera_Forum]

Hey Trout,  

Maybe you can post that SOPC Builder component into the IP section of the forum. I&#39;m sure several others are interested in an Avalon I2C controller.

[Altera_Forum]

Done! 

please refer to "post your oun ip" section of the forum. The title is "Integrate the Opencores&#39;s I2C ip into SOPC".  regards.

[Altera_Forum]

--- Quote Start ---  Done! please refer to "post your oun ip" section of the forum. The title is "Integrate the Opencores&#39;s I2C ip into SOPC".  regards.  --- Quote End ---    hi....   i have the i2c hdl files which i got from opencores , i want to integrate this into sopc but finding some problems .can u just provide me the link of your project file as i am finding it difficult to find it in the forum.It would be helpful for me.  regards Udayraj MP

[Altera_Forum]

Even I had used I2C verilog code from Opencores. I've successfully simulated it. But I'm unable to synthesize it in Synopsys synthesis tool. 

 Can anyone help me out???