Christian Mauderer d9c0dd3c32 bsp/atsam: Merge USART and UART driver
If no extended features of the USART are used and if the comparison
feature of the UART is not used, the two modules are compatible. The
drivers were nearly identical except for some names of the defines.

This patch merges the two drivers into one.

Update #4577
2022-01-18 08:50:04 +01:00
2018-10-10 07:57:47 +02:00
2019-03-04 07:07:05 +01:00
2013-05-27 14:47:20 +02:00
2018-07-06 10:06:02 +02:00
2013-06-18 13:38:31 +02:00
2019-03-04 07:07:05 +01:00
2012-10-09 19:26:51 +02:00
2013-09-19 13:16:06 +02:00
2013-05-27 14:47:20 +02:00
2013-05-27 14:47:20 +02:00
2020-04-27 11:35:21 +10:00

Real-Time Executive for Multiprocessing Systems (RTEMS)
-------------------------------------------------------

RTEMS, Real-Time Executive for Multiprocessor Systems, is a real-time executive
(kernel) which provides a high performance environment for embedded
applications with the following features:

 - standards based user interfaces
 - multitasking capabilities
 - homogeneous and heterogeneous multiprocessor systems
 - event-driven, priority-based, preemptive scheduling
 - optional rate monotonic scheduling
 - intertask communication and synchronization
 - priority inheritance
 - responsive interrupt management
 - dynamic memory allocation
 - high level of user configurability
 - open source with a friendly user license

Project git repositories are located at https://git.rtems.org/

 RTEMS Kernel:        : https://git.rtems.org/rtems/
 RTEMS Source Builder : https://git.rtems.org/rtems-source-builder/
 RTEMS Tools          : https://git.rtems.org/rtems-tools/
 RTEMS Documentation  : https://git.rtems.org/rtems-docs/
 RTEMS FreeBSD        : https://git.rtems.org/rtems-libbsd/

Online documentation is available at https://docs.rtems.org/

 RTEMS User Manual : https://docs.rtems.org/branches/master/user/index.html
 RTEMS RSB Manual  : https://docs.rtems.org/branches/master/rsb/index.html
 RTEMS Classic API : https://docs.rtems.org/branches/master/c-user/index.html
 RTEMS POSIX API   : https://docs.rtems.org/branches/master/posix-users/index.html

RTEMS Doxygen for CPUKit : https://docs.rtems.org/doxygen/branches/master/

RTEMS POSIX 1003.1 Compliance Guide :
 https://docs.rtems.org/branches/master/posix-compliance/index.html

 - Details the standards base functionality and profiles RTEMS supportsXo

RTEMS Developers Wiki : http://devel.rtems.org

 - Bug reporting, community knowledge and tutorials.

RTEMS Mailing Lists : https://lists.rtems.org/mailman/listinfo

 - The RTEMS Project maintains mailing lists which are used for most
   discussions:

   * For general-purpose questions related to using RTEMS, use the rtems-users
     ml: https://lists.rtems.org/mailman/listinfo/users

   * For questions and discussion related to development of RTEMS, use the
     rtems-devel ml: https://lists.rtems.org/mailman/listinfo/devel

The version number for this software is indicated in the VERSION file.
Description
RTEMS is a ​real-time executive in use by embedded systems applications around the world and beyond
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