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add uarte draft

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Mirabellensaft 2023-02-21 16:24:57 +01:00
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embedded-workshop-book/src/uarte-implementation.md
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# Write the Uarte implementation
## Step-by-Step Solution
* add field to the board struct
* add struct for the instance, how to figure out what the type of the inner field is
* create instance in init, add baudrate, parity etc.
* add to instantiation of board struct
* impl fmt::Write for the Uarte struct, simple write does not work because of dma
* example code with button is not a good idea for the simple button implementation.
I think this is plenty for an hour.