Uc/os self-study from 0

OS initialization
OSInit(p_err)

Literally ：
OSInitHook() ------------------- The interrupted stack space is cleared , Get the maximum address of interrupt stack space ;
OSIntNestingCtr --------------- Interrupt nesting reset ;
OSRunning ---------------------- Multitasking instructions
OSSchedLockNestingCtr ---- Lock nesting
OSTCBCurPtr ------------------- At present TCB The pointer
OSTCBHighRdyPtr
OSPrioCur ----------------------- Current priority
OSPrioHighRdy
OSPrioSaved

OS_CFG_SCHED_LOCK_TIME_MEAS_EN-------- Lock time measurement

OS_CFG_SCHED_ROUND_ROBIN_EN------------- Cyclic scheduling
OSSchedRoundRobinEn
OSSchedRoundRobinDfltTimeQuanta------------------ Default once 10 Time slice

if (OSCfg_ISRStkSize > (CPU_STK_SIZE)0) {------- Sense and OSInitHook() Function as

OS_CFG_APP_HOOKS_EN------------------------------ eliminate hook A function pointer

OS_CFG_TASK_REG_TBL_SIZE----------------------- Task register

OS_PrioInit(); ------------------------------------------------- Clear priority , An array assignment 0

OS_RdyListInit();--------------------------------------------- Initialize the ready list

OS_CFG_FLAG_EN ----------------------------------------event Sign module

OS_CFG_MEM_EN ----------------------------------------- Memory management module

OS_MSG_EN-------------------------------------------------

OS_CFG_MUTEX_EN ------------------------------------- Mutually exclusive management module

OS_CFG_Q_EN --------------------------------------------- Message queue management module

OS_TaskInit() ------------------------------------------------- Initialize task management

OS_CFG_ISR_POST_DEFERRED_EN --------------

OS_IdleTaskInit ---------------------------------------------- Create a idle Mission

OS_TickTaskInit --------------------------------------------- Create a tick Mission

OS_CFG_STAT_TASK_EN ------------------------------ Statistical tasks
OS_StatTaskInit() ------------------------------------------ Create a statistical task

OS_CFG_TMR_EN ---------------------------------------- Timer task
OS_TmrInit() ------------------------------------------------ Create a timer task

OS_CFG_DBG_EN ---------------------------------------debug Pattern
OS_Dbg_Init() ---------------------------------------------- Prevent the compiler from optimizing some unused variables

OSCfg_Init() ------------------------------------------------ The function annotation is the same as the function above

To be continued ……

Create a OSTask
OSTaskCreate
(
p_tcb------------- Pointer to the task control block , There are various parameter information of the task
p_name--------- String name of the task
p_task----------- Pointer to task code
p_arg------------ Parameters brought in when entering the function for the first time
prio--------------- priority , The smaller, the higher the priority
p_stk_base----- The lowest address of the task stack
stk_limit--------- Stack full limit
stk_size--------- Stack size , Company （CPU_STK）
q_size----------- The maximum number of messages sent to the task
time_quanta— The size of the time slice
p_ext------------TCB Expand memory
opt--------------- optional , nothing 、 Stack check 、 Stack cleanup 、 Floating point register 、TLS
p_err------------ Where to store the error code
)