communication between SOC and MCU over serial UART

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http://www.linuxquestions.org – Hi, I have a board on which I have a ARM processor based SOC running Linux. There is also one MCU on the board responsible for power sequencing. Connection between the SOC and MCU happens through serial UART connection. I want to write an application defining the handshaking messaging mechanism. My application has to send heartbeat messages to MCU and it should send ACK for the same. Please guide me how to design this. Thanks akg (HowTos)