tools: add wrpc-uart-sw.c
This is the host part of the software-only uart. The lm32 part is
selected at compile time (CONFIG_UART_SW).
The tool, when run, opens one or more pty pairs, and reports to stdout
which is the name of the slave descriptor. You can then run
"minicom -p /dev/pts/XXX" or other commands, to access the software uart.
Signed-off-by: Alessandro Rubini <rubini@gnudd.com>
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tools/wrpc-uart-sw.c
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