Well I'm trying to build an engine knock analyzer for my jet ski. Found several chips which do 90% of the work ( signal processing ). The one part I'm struggling with is power on conditions. The signal processing chip only has volatile mememory and an SPI interface which requires a few bytes to be passed to set params when powered on. So long story short looking for a simple board which has some non-volatile memory that can send a few SPI bytes when powered up. It would be even better if the bytes could be changed via USB interface.
Any help is appreciated