# 41. Example Application¶

  1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 /* * 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_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_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_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