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Altera_Forum
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11 years ago

I2C Protocol help

Hi, I am new to VHDL. I am trying to implement an I2C master for practice (synthesizable code). At the moment , I have code written to send the start bit and then 8 data bits. The SDA should chan...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
11 years ago

Hi,

There's an I2C controller on the AlteraWiki

http://www.alterawiki.com/wiki/i2c_%28opencores%29

This is the core from OpenCores.org, with a Qsys _hw.tcl wrapper. I have not used this core.

I noticed that Altera has used this IP in their DisplayPort code, eg., look in your Quartus install

14.0/ip/altera/altera_dp/hw_demo/altera_avalon_i2c/

There is a _hw.tcl file in there, but the component will not show up in Qsys since it has INTERNAL set to true.

I'm pretty sure you could copy that folder to ip/ in a project, change INTERNAL to false, and Qsys will show it.

Cheers,

Dave