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

Usually, on the SX, a serial asynchronous transmitter is realized as Virtual Peripheral by software within an interrupt service routine. In case you have my book, you can find an example there - if not, please let me know, and I'll provide you with a link to the source code. I don't know the details about the acquisition of your data but I'm quite sure that the same SX can handle both, i.e. acquiring the data plus handling the serial communication to the PC.

An adapter to shift the SXes 0/5V level to the -12/+12V RS-232 levels would be nice but not really necessary. You can find exsamples for alternative interfaces here in this forum.

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