RS485 non standard data word

[tasifacij]

Hi,

uc: stm32f446

I have a question regarding non standard word length over RS485.

I need to receive next frame over RS485

1 start bit, 16-bit data word, 2 stop bits, in total 19 bits.

UART implementation allows to receive 8 or 9-bit data words.

Could you please advice what can be an approcach to achieve?

Best regards, Taras.

[zhaowhong]

This chip  is  sp3845

[Andrew Neil]

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@zhaowhong wrote:

This chip  is  sp3845

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That's just an RS485 transceiver; that has nothing to do with the data frame format - just the voltages used to represent the bit states.

[tasifacij]

You are quite right - in this particular case we have voltages and edge detection.

[Andrew Neil]

So, again, what was your basis for saying, "The real product does not do this"

What does the "real product" do?

[tasifacij]

I had a uart with non-standard word length( 16 bits ). This is all it does.

[Andrew Neil]

Sorry, it was @zhaowhong who said,  "The real product does not do this"

But can't you give any more detail of what you do have than just, "Fanuc encoder"?

A part number? A link to a datasheet or Product Page? Anything??