Tomasz 'CeDeROM' CEDRO 602f9db2f3 docs/library/machine.UART: Add notes about UART init and deinit.
* `init()` can be called multiple times to reconfigure UART.
* After `deinit()` it is impossible to call `init()` again.

Signed-off-by: Tomasz 'CeDeROM' CEDRO <tomek@cedro.info>
2022-08-26 15:13:45 +10:00
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