笔者在移植uCOS Ⅲ到stm32f103c8时碰到如下问题
Error: L6407W: Sections of aggregate size 0x6c48 bytes could not fit into .ANY selector(s).初步推定应该是内核服务没有配置导致，在别人提示下查看了以前stm32f103vet6移植编译成功的ucos Ⅲ工程MAP文件。
如下：
考虑到stm32f103c8不用这么多服务，因此拟对内核服务做出裁剪。
事后验证，事实上不用删除uCOS-IIISource下对应服务的C语言文件，只需找到os_cfg.h文件，对其中不用的服务进行置0操作，MEMORY MANAGEMENT 占用内存较多，而且f103c8不需要内存管理，首先可将其服务置零，然后编译发现已经可以编译通过，代码量差不多是27KB左右，后又对其他不用服务进行了相同操作。最终可将代码量控制在8k左右。
os_cfg.h文件最终配置如下所示
#define OS_CFG_APP_HOOKS_EN 0u /* Enable (1) or Disable (0) application specific hooks */
#define OS_CFG_ARG_CHK_EN 1u /* Enable (1) or Disable (0) argument checking */
#define OS_CFG_CALLED_FROM_ISR_CHK_EN 1u /* Enable (1) or Disable (0) check for called from ISR */
#define OS_CFG_DBG_EN 1u /* Enable (1) debug code/variables */
#define OS_CFG_ISR_POST_DEFERRED_EN 1u /* Enable (1) or Disable (0) Deferred ISR posts */
#define OS_CFG_OBJ_TYPE_CHK_EN 1u /* Enable (1) or Disable (0) object type checking */
#define OS_CFG_TS_EN 0u /* Enable (1) or Disable (0) time stamping */
#define OS_CFG_PEND_MULTI_EN 1u /* Enable (1) or Disable (0) code generation for multi-pend feature */
#define OS_CFG_PRIO_MAX 32u /* Defines the maximum number of task priorities (see OS_PRIO data type) */
#define OS_CFG_SCHED_LOCK_TIME_MEAS_EN 0u /* Include code to measure scheduler lock time */
#define OS_CFG_SCHED_ROUND_ROBIN_EN 0u /* Include code for Round-Robin scheduling */
#define OS_CFG_STK_SIZE_MIN 64u /* Minimum allowable task stack size */
/* ----------------------------- EVENT FLAGS --------------------------- */
#define OS_CFG_FLAG_EN 0u /* Enable (1) or Disable (0) code generation for EVENT FLAGS */
#define OS_CFG_FLAG_DEL_EN 0u /* Include code for OSFlagDel() */
#define OS_CFG_FLAG_MODE_CLR_EN 0u /* Include code for Wait on Clear EVENT FLAGS */
#define OS_CFG_FLAG_PEND_ABORT_EN 0u /* Include code for OSFlagPendAbort() */
/* -------------------------- MEMORY MANAGEMENT ------------------------ */
#define OS_CFG_MEM_EN 0u /* Enable (1) or Disable (0) code generation for MEMORY MANAGER */
/* --------------------- MUTUAL EXCLUSION SEMAPHORES ------------------- */
#define OS_CFG_MUTEX_EN 0u /* Enable (1) or Disable (0) code generation for MUTEX */
#define OS_CFG_MUTEX_DEL_EN 0u /* Include code for OSMutexDel() */
#define OS_CFG_MUTEX_PEND_ABORT_EN 0u /* Include code for OSMutexPendAbort() */
/* --------------------------- MESSAGE QUEUES -------------------------- */
#define OS_CFG_Q_EN 0u /* Enable (1) or Disable (0) code generation for QUEUES */
#define OS_CFG_Q_DEL_EN 0u /* Include code for OSQDel() */
#define OS_CFG_Q_FLUSH_EN 0u /* Include code for OSQFlush() */
#define OS_CFG_Q_PEND_ABORT_EN 0u /* Include code for OSQPendAbort() */
/* ----------------------------- SEMAPHORES ---------------------------- */
#define OS_CFG_SEM_EN 1u /* Enable (1) or Disable (0) code generation for SEMAPHORES */
#define OS_CFG_SEM_DEL_EN 1u /* Include code for OSSemDel() */
#define OS_CFG_SEM_PEND_ABORT_EN 1u /* Include code for OSSemPendAbort() */
#define OS_CFG_SEM_SET_EN 1u /* Include code for OSSemSet() */
/* -------------------------- TASK MANAGEMENT -------------------------- */
#define OS_CFG_STAT_TASK_EN 0u /* Enable (1) or Disable(0) the statistics task */
#define OS_CFG_STAT_TASK_STK_CHK_EN 0u /* Check task stacks from statistic task */
#define OS_CFG_TASK_CHANGE_PRIO_EN 0u /* Include code for OSTaskChangePrio() */
#define OS_CFG_TASK_DEL_EN 0u /* Include code for OSTaskDel() */
#define OS_CFG_TASK_Q_EN 0u /* Include code for OSTaskQXXXX() */
#define OS_CFG_TASK_Q_PEND_ABORT_EN 0u /* Include code for OSTaskQPendAbort() */
#define OS_CFG_TASK_PROFILE_EN 1u /* Include variables in OS_TCB for profiling */
#define OS_CFG_TASK_REG_TBL_SIZE 1u /* Number of task specific registers */
#define OS_CFG_TASK_SEM_PEND_ABORT_EN 0u /* Include code for OSTaskSemPendAbort() */
#define OS_CFG_TASK_SUSPEND_EN 1u /* Include code for OSTaskSuspend() and OSTaskResume() */
/* -------------------------- TIME MANAGEMENT -------------------------- */
#define OS_CFG_TIME_DLY_HMSM_EN 1u /* Include code for OSTimeDlyHMSM() */
#define OS_CFG_TIME_DLY_RESUME_EN 1u /* Include code for OSTimeDlyResume() */
/* ------------------------- TIMER MANAGEMENT -------------------------- */
#define OS_CFG_TMR_EN 0u /* Enable (1) or Disable (0) code generation for TIMERS */
#define OS_CFG_TMR_DEL_EN 0u /* Enable (1) or Disable (0) code generation for OSTmrDel() */
代码编译后规模如下
