中断管理
2种方式:直接发布、延时发布
OS_CFG_ISR_POST_DEFERRED_EN = 1 延时发布 中断消息 defer ISR POST En使能
OS_CFG_ISR_POST_DEFERRED_EN = 0 直接发布 中断消息
1.延时发布
#if OS_CFG_ISR_POST_DEFERRED_EN > 0u /* Deferred ISR Posts ------------------------------ */ /* Lock the scheduler */ /*if:如果采用 延迟发布 中断处理*/ //访问全局资源OSSchedLockNestingCtr //才 关中断CPU_CRITICAL_ENTER() 打开中断CPU_CRITICAL_EXIT() //对临界段代码的保护还是采用调度器加锁的方式 //进入临界区 给 调度器上锁 #define OS_CRITICAL_ENTER() \ do { \ CPU_CRITICAL_ENTER(); \ OSSchedLockNestingCtr++; \ if (OSSchedLockNestingCtr == 1u) { \ OS_SCHED_LOCK_TIME_MEAS_START(); \ } \ CPU_CRITICAL_EXIT(); \ } while (0) //退出临界区 给 调度器解锁 #define OS_CRITICAL_EXIT() \ do { \ CPU_CRITICAL_ENTER(); \ OSSchedLockNestingCtr--; \ if (OSSchedLockNestingCtr == (OS_NESTING_CTR)0) { \ OS_SCHED_LOCK_TIME_MEAS_STOP(); \ if (OSIntQNbrEntries > (OS_OBJ_QTY)0) { \ CPU_CRITICAL_EXIT(); \ OS_Sched0(); \ } else { \ CPU_CRITICAL_EXIT(); \ } \ } else { \ CPU_CRITICAL_EXIT(); \ } \ } while (0)
2.直接发布
/*else: 直接发布 中断服务程序 */ //关中断 保护临界代码区 //CPU_CRITICAL_ENTER() 最终调用 CPU_SR_Save() 在cpu_a.asm 用汇编定义 #define OS_CRITICAL_ENTER() CPU_CRITICAL_ENTER() //开中断 退出 //CPU_CRITICAL_EXIT() 最终调用 CPU_SR_Restore() 在cpu_a.asm 用汇编定义 #define OS_CRITICAL_EXIT() CPU_CRITICAL_EXIT() #endif
时间管理
1. OSTimeDlyHMSM(0,0,1,0,OS_OPT_TIME_HMSM_STRICT,&err);
hour:0-99
minutes:0-59
seconds:0-59
milli:0-999
opt:OS_OPT_TIME_HMSM_STRICT
#if OS_CFG_TIME_DLY_HMSM_EN > 0u /* 任务延时函数 */ void OSTimeDlyHMSM (CPU_INT16U hours, //0-99 CPU_INT16U minutes, //0-59 CPU_INT16U seconds, //0-59 CPU_INT32U milli, //0-999 OS_OPT opt, //OS_OPT_TIME_HMSM_STRICT严格参数 OS_ERR *p_err) { #if OS_CFG_ARG_CHK_EN > 0u CPU_BOOLEAN opt_invalid; CPU_BOOLEAN opt_non_strict; #endif OS_OPT opt_time; OS_RATE_HZ tick_rate; OS_TICK ticks; CPU_SR_ALLOC(); #ifdef OS_SAFETY_CRITICAL if (p_err == (OS_ERR *)0) { OS_SAFETY_CRITICAL_EXCEPTION(); return; } #endif #if OS_CFG_CALLED_FROM_ISR_CHK_EN > 0u if (OSIntNestingCtr > (OS_NESTING_CTR)0u) { /* Not allowed to call from an ISR */ *p_err = OS_ERR_TIME_DLY_ISR; return; } #endif if (OSSchedLockNestingCtr > (OS_NESTING_CTR)0u) { /* Can't delay when the scheduler is locked */ *p_err = OS_ERR_SCHED_LOCKED; return; } opt_time = opt & OS_OPT_TIME_MASK; /* Retrieve time options only. */ switch (opt_time) { case OS_OPT_TIME_DLY: case OS_OPT_TIME_TIMEOUT: case OS_OPT_TIME_PERIODIC: if (milli == (CPU_INT32U)0u) { /* Make sure we didn't specify a 0 delay */ if (seconds == (CPU_INT16U)0u) { if (minutes == (CPU_INT16U)0u) { if (hours == (CPU_INT16U)0u) { *p_err = OS_ERR_TIME_ZERO_DLY; return; } } } } break; case OS_OPT_TIME_MATCH: break; default: *p_err = OS_ERR_OPT_INVALID; return; } #if OS_CFG_ARG_CHK_EN > 0u /* Validate arguments to be within range */ opt_invalid = DEF_BIT_IS_SET_ANY(opt, ~OS_OPT_TIME_OPTS_MASK); if (opt_invalid == DEF_YES) { *p_err = OS_ERR_OPT_INVALID; return; } opt_non_strict = DEF_BIT_IS_SET(opt, OS_OPT_TIME_HMSM_NON_STRICT); if (opt_non_strict != DEF_YES) { if (milli > (CPU_INT32U)999u) { *p_err = OS_ERR_TIME_INVALID_MILLISECONDS; return; } if (seconds > (CPU_INT16U)59u) { *p_err = OS_ERR_TIME_INVALID_SECONDS; return; } if (minutes > (CPU_INT16U)59u) { *p_err = OS_ERR_TIME_INVALID_MINUTES; return; } if (hours > (CPU_INT16U)99u) { *p_err = OS_ERR_TIME_INVALID_HOURS; return; } } else { if (minutes > (CPU_INT16U)9999u) { *p_err = OS_ERR_TIME_INVALID_MINUTES; return; } if (hours > (CPU_INT16U)999u) { *p_err = OS_ERR_TIME_INVALID_HOURS; return; } } #endif /* Compute the total number of clock ticks required.. */ /* .. (rounded to the nearest tick) */ //默认 系统时钟节拍:200Hz 5ms tick_rate = OSCfg_TickRate_Hz; ticks = ((OS_TICK)hours * (OS_TICK)3600u + (OS_TICK)minutes * (OS_TICK)60u + (OS_TICK)seconds) * tick_rate + (tick_rate * ((OS_TICK)milli + (OS_TICK)500u / tick_rate)) / (OS_TICK)1000u; if (ticks > (OS_TICK)0u) { OS_CRITICAL_ENTER(); OSTCBCurPtr->TaskState = OS_TASK_STATE_DLY; OS_TickListInsert(OSTCBCurPtr, ticks, opt_time, p_err); if (*p_err != OS_ERR_NONE) { OS_CRITICAL_EXIT_NO_SCHED(); return; } OS_RdyListRemove(OSTCBCurPtr); /* Remove current task from ready list */ OS_CRITICAL_EXIT_NO_SCHED(); OSSched(); /* Find next task to run! */ *p_err = OS_ERR_NONE; } else { *p_err = OS_ERR_TIME_ZERO_DLY; } } #endif
2. OSTimeDly()
void OSTimeDly (OS_TICK dly, OS_OPT opt, OS_ERR *p_err)