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Do you mean I square C? If so, I think the university program has HAL driver for an I2C component.
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Hi, benc. I2S is an audio serial bus protocol. I don't think it's much different than I2C or SPI in terms of complexity or implementation, but each has its eccentricities. A codec uses I2S for clock and timing, and I2C for controlling it. I've been up and down the references and examples - if there's something there i missed it. If I had an example for a 'codec In/Out loop Back' i might be all set.
http://www.interfacebus.com/i2s_interface_bus.html
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