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README: document UART autodetection command

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King Kévin 2021-05-09 14:46:26 +02:00
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@ -44,6 +44,13 @@ provide as argument the channel you want to monitor.
this works like the `monitor` command, but has the advantage to detect high voltages down to 1.5V (ideal for 1.8V logic).
it will also show the (maximum) frequency of the signal (useful to clock and baud rate measurement).
to detect the configuration of a UART stream, use the `uart_auto` command.
provide as argument the channel you want to monitor.
as data comes it, it will figure out the baud rate, data bits, and parity of the stream.
the configuration is displayed as it finds a better match.
it will also show the decoded data.
this mainly works for ASCII based communication (e.g. human readable debug logs), and might not give correct results for binary communication.
you can also reset the target board if you connected to target reset pin to the SWJ finder.
you can select of to drive the reset pin (OD for open-drain, PP for push-pull) and active level (H for high, L for low) using the `reset [ODL|ODH|PPL|PPH]` command.
to assert or release the reset, us the `reset 1` or `reset 0` commands.