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where I can get those IPCORE (i2c, spi)[/b]
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you can download i2c from opencores. A SPI Core from Altera should be available in your SOPC Builder
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drivers[/b]
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drivers are already in your kernel-distro. you just need to enable them when you configure your kernel
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sample app for running those things ?[/b]
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Examples for spi and i2c are included in your microtronix-distro
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I saw there is something on
opencores.org, but i have no idea how to integrate them using Altrea's tools,[/b]
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You find some information about integration i2c in "Post your Own IP".
Also look in the forum for more information. The "search" function helps alot
Please also visit NiosWiki.