We can't help until we know what you are already doing. Please post your code, including Configuration and Special Function Registers.
Re: Rs232 Hex Char
We can't help until we know what you are already doing. Please post your code, including Configuration and Special Function Registers.
Re: Rs232 Hex Char
On Realterm - display tab - have you chosen Display as Hex + ASCII ?
$04 is technically an unprintable character - it means "End of Transmission"
https://www.ascii-code.com/
Also it depends on the font that is chosen as to what will be shown.
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