收藏本站
Chapter 5
μC/OS-III provides an internal task called OS_StatTask() that checks the stack of each of
the tasks at run-time. OS_StatTask() typically runs at a low priority so that it does not
interfere with the application code. OS_StatTask() saves the value computed for each task
in the TCB of each task in these fields, which represents the maximum number of stack
bytes used and the amount of stack space still unused by the task. These fields only exist in
a TCB if the statistic task is enabled at compile time ( OS_CFG_STAT_TASK_STK_CHK_EN is set
to 1 in OS_CFG.H ).
.Opt
This field saves the “options” passed to OSTaskCreate() when the task is created (see
OS_TASK_OPT_??? in OS.H ). Note that task options are additive.
.TickCtrPrev
This field stores the previous value of OSTickCtr when OSTimeDly() is called with the
OS_OPT_TIME_PERIODIC option.
.TickCtrMatch
When a task is waiting for time to expire, or pending on an object with a timeout, the task
is placed in a special list of tasks waiting for time to expire. When in this list, the task waits
for .TickCtrMatch to match the value of the “tick counter” ( OSTickCtr ). When a match
occurs, the task is removed from that list.
.TickRemain
This field is computed at run time by OS_TickTask() to compute the amount of time
(expressed in “ticks”) left before a delay or timeout expires. This field is useful for
debuggers or run-time monitors for display purposes.
.TimeQuanta and .TimeQuantaCtr
These fields are used for time slicing. When multiple tasks are ready to run at the same
priority, .TimeQuanta determines how much time (in ticks) the task will execute until it is
preempted by μC/OS-III so that the next task at the same priority gets a chance to execute.
.TimeQuantaCtr keeps track of the remaining number of ticks for this to happen and is
loaded with .TimeQuanta at the beginning of the task’s time slice.
.CPUUsage
This field is computed by OS_StatTask() if OS_CFG_TASK_PROFILE_EN is set to 1 in
OS_CFG.H . .CPUUsage contains the CPU usage of a task in percent (0 to 100%).
104
发布紧急采购，3分钟左右您将得到回复。

采购需求

(若只采购一条型号，填写一行即可)

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

*型号 *数量 厂商 批号 封装
添加更多采购

我的联系方式

*
*
*
相关PDF资料
AD-UCUSBD-SPRD PRD LIC UCUSB DEV CORE CCES SGL
AD637-EVALZ BOARD EVALUATION FOR AD637
AD736-EVALZ BOARD EVALUATION FOR AD736
AD737-EVALZ BOARD EVALUATION FOR AD737
AD8007AKS-EBZ BOARD EVAL FOR AD8007AKS
AD8018ARU-EVAL BOARD EVAL FOR AD8018
AD8034ART-EBZ BOARD EVAL FOR AD8034ART
AD8040AR-EBZ BOARD EVAL FOR AD8040AR
相关代理商/技术参数
ADUCOSC100 制造商:Analog Devices 功能描述:ADC - Rail/Tube
ADUCOSC100-REEL 功能描述:DAC MICROCONVERTER DUAL TSSOP 制造商:analog devices inc. 系列:* 零件状态:上次购买时间 标准包装:1
ADUCOSC100-REEL7 功能描述:DAC MICROCONVERTER DUAL TSSOP 制造商:analog devices inc. 系列:* 零件状态:上次购买时间 标准包装:1
ADUCOSCZ100 制造商:Analog Devices 功能描述:
ADUCOSCZ100-REEL7 制造商:Analog Devices 功能描述:ANAADUCOSCZ100-REEL7 12 BIT ADC WITH EMB
ADuC-P7026 功能描述:开发板和工具包 - ARM PROTOTYPE BRD FOR ADUC7026 ARM7 RoHS:否 制造商:Arduino 产品:Development Boards 工具用于评估:ATSAM3X8EA-AU 核心:ARM Cortex M3 接口类型:DAC, ICSP, JTAG, UART, USB 工作电源电压:3.3 V
ADUCRF101 制造商:Analog Devices 功能描述:PRECISION ANALOG MICRCONTROLLER - Tape and Reel
ADUCRF101BCPZ128 制造商:Analog Devices 功能描述:PRECISION ANALOG MICROCONTROLLER WITH RF TRANSCEIVER, ARM CO - Trays