[rtems commit] bsps: Basic console driver for Termios devices

[Sebastian Huber]

On 2014-07-09 22:34, Joel Sherrill wrote:
> This is duplicative of the following files in libbsp/shared:
>
> console_control.c
> console_read.c
> console_write.c

This is not a duplicate, it is an easy to use replacement for all this 
complicated shared console driver stuff.

>
> Please just add individual files for the other methods
> and list them.

This would only make the copy and paste in the Makefile.am worse.

>
> And yes, there are BSPs that only use some of these
> and provide their own versions of others.

I am about to go on vacation soon, so I had no time to update the Termios 
documentation in the BSP guide yet.  The recent changes in the Termios API are 
relatively small and do not impact existing drivers, but they greatly simplify 
the console driver.  All you need now are three things:

1. This console_termios.c in the BSPs Makefile.am

2. A general device specific low-level driver, for example:

http://git.rtems.org/rtems/tree/c/src/lib/libbsp/sparc/shared/uart/apbuart_termios.c

In contrast to the low-level drivers using the old callback API, this low-level 
driver uses no global variables (!).

3. A BSP specific initialization routine:

http://git.rtems.org/rtems/tree/c/src/lib/libbsp/sparc/leon3/console/console.c

Thats it, no myriads of different tables here and there.

-- 
Sebastian Huber, embedded brains GmbH

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