
uC/OS-II @251_Xsmall+Large  PendSvл  ֲ  tzz1983

ӭSTC8051U, uC/OS-II @251_Xsmall+Large, Сߴedataͺ֧ȼӴ. 2K edata 


飺  STC MUC 251ںϵ uC/OS-2.93 ֲ汾.
*֧ xsmall  large  ֱģʽ
*֧ ָOSȫֱ xdata  edata. ܱģʽӰ.
*֧ MSP+PSP ģʽ, ɴʡedataʹ.
*֧ OSжѡ.


ԣѰͨ "ź,Ϣ,־,,ź,ڴ,ʱ,
/,/,ȡOSʱ,ͳ,ջ,"  ļ򵥹ܲ.


ʹ֪
1.ѡ Ŀѡȫ "Generate reentrant functions",ѡ.
2.ֲҪʽָ洢,ñԶ.
3.ǰҪEA, õʱԶEA.
4.ʱ0ϵͳδ,́꼶. ĬTime4PendSvж, PendSvжϿɸΪжԴ.
5.ʹñĿеSTART251.A51, OSֲ(236). 
6.START251.A51 е STACKSIZE (109) жרջĴС, һ˵ STACKSIZE >= (64*ſ˶ٸжȼ)


ʱԴ	ת  config.h
PendSv	תos_cfg.h  os_cpu_c.c
жϣ	תos_cfg.h
OSȫֱλ  ָOSȫֱ xdata edata, ѡܱģʽӰ. (os_cfg.h) 



Ϊ˽ʡڴ濪֧,עƿTCBṹвõļݳԱ, ҪʹöӦ, ȫѱ, ȡӦע

//    void            *OSTCBExtPtr;           /* չõıָ  */
//    INT32U           OSTCBCtxSwCtr;         /* л */
//    INT32U           OSTCBCyclesTot;        /* еʱ  */
//    INT32U           OSTCBCyclesStart;      /* ָʼʱѭ  */
//    OS_STK          *OSTCBStkBase;          /* ջַ      */     

