In SX Microcontrollers, SX/B Compiler and SX-Key Tool, mebikerider wrote:

Part of the problem will be how hard is it to take your existing design and add communication to it.

RS232 serial is often a good way to go because so many PC programs already are able to receive it. But adding it to an existing project may be hard because of the need to precisely time the serial bits. 

One way to send RS232 is to add a virtual periferal with an interrupt sending bits at the right time. If your design will not allow that, and if your project can spare the cycles, you could send RS232 from a separate function that sends bits with internal time delays. It kind of depends on what your existing project will allow.

Would there be any harm to your project if occasional data bytes were lost? If not then maybe your SX could simply send a steady stream of bytes. If so then you might need to design a handshaking protocol of some sort.

David

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