Add some more progress and split non-core functionality to separate repo

More progress to implementation and some changes in project it self.
This library will implement only drivers for features on chip but
nothing else. Everything connected externally is now in separate
repository.

1 files changed, 23 insertions, 0 deletions

diff --git a/docs/references/usart.md b/docs/references/usart.md
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+Universal synchronous/asynchronous receive/transmitter
+======================================================
+This part acts as UART intended as text base interface with computer. It is
+using hardware termed as USART by Atmel. This hardware also supports synchronous
+communication and can behave as SPI master, but this is not supported by this
+library (I don't require this feature, but implementation is welcomed).
+
+This part implements, if enabled, whole stack for binding input and output to
+stdin and stdout. This is handy during development. You can use `printf` and
+`scanf` directly.
+
+This part can be enabled by `CONFIG_USART` configuration option. This enables
+more detailed configuration in sub-menu.
+
+## Usage
+
+
+## References
+### usart_init_async
+```C
+void usart_init_async(void)
+```
+