Anton Veretenenko created a simple FM Radio with a TEA5767 compatible chip. The RDA5807P is an I2C (Or spi) controlled FM Radio Tuner. He used a generic AC Powered PC Speaker, added a 3.3v regulator, a rotary encoder, and stuffed it in.
The post and code don't mention it, but from the pictures, the stated 2kb limit, and the use of USI, it's using the G2231 on a v1.4 Launchpad.
Blog Post: http://blog.avrnoob.com/2013/10/ti-launchpad-rda5807p-tea5767-fm-radio.html
Code Repo: http://code.avrnoob.com/ti-launchpad-fm-radio
Similar to @juani_c project: http://forum.43oh.com/topic/2359-fm-radio/
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RDA5807P (TEA5767 clone) FM Radio inside a PC speaker
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