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diff --git a/c-user/example_application.rst b/c-user/example_application.rst new file mode 100644 index 0000000..49f6e9b --- /dev/null +++ b/c-user/example_application.rst @@ -0,0 +1,76 @@ +.. comment SPDX-License-Identifier: CC-BY-SA-4.0 + +.. COMMENT: COPYRIGHT (c) 1989-2011. +.. COMMENT: On-Line Applications Research Corporation (OAR). +.. COMMENT: All rights reserved. + +Example Application +################### + +.. code-block:: c + :linenos: + + /* + * This file contains an example of a simple RTEMS + * application. It instantiates the RTEMS Configuration + * Information using confdef.h and contains two tasks: + * a user initialization task and a simple task. + */ + + #include <rtems.h> + + rtems_task user_application(rtems_task_argument argument); + + rtems_task init_task( + rtems_task_argument ignored + ) + { + rtems_id tid; + rtems_status_code status; + rtems_name name; + + name = rtems_build_name( 'A', 'P', 'P', '1' ) + + status = rtems_task_create( + name, 1, RTEMS_MINIMUM_STACK_SIZE, + RTEMS_NO_PREEMPT, RTEMS_FLOATING_POINT, &tid + ); + if ( status != RTEMS_STATUS_SUCCESSFUL ) { + printf( "rtems_task_create failed with status of %d.\n", status ); + exit( 1 ); + } + + status = rtems_task_start( tid, user_application, 0 ); + if ( status != RTEMS_STATUS_SUCCESSFUL ) { + printf( "rtems_task_start failed with status of %d.\n", status ); + exit( 1 ); + } + + status = rtems_task_delete( SELF ); /* should not return */ + + printf( "rtems_task_delete returned with status of %d.\n", status ); + exit( 1 ); + } + + rtems_task user_application(rtems_task_argument argument) + { + /* application specific initialization goes here */ + while ( 1 ) { /* infinite loop */ + /* APPLICATION CODE GOES HERE + * + * This code will typically include at least one + * directive which causes the calling task to + * give up the processor. + */ + } + } + + /* The Console Driver supplies Standard I/O. */ + #define CONFIGURE_APPLICATION_NEEDS_CONSOLE_DRIVER + /* The Clock Driver supplies the clock tick. */ + #define CONFIGURE_APPLICATION_NEEDS_CLOCK_DRIVER + #define CONFIGURE_MAXIMUM_TASKS 2 + #define CONFIGURE_INIT_TASK_NAME rtems_build_name( 'E', 'X', 'A', 'M' ) + #define CONFIGURE_RTEMS_INIT_TASKS_TABLE + #define CONFIGURE_INIT + #include <rtems/confdefs.h> |