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标题: zt-C51±à??:2005°?uCOS?ò C51???????? [打印本页]

作者: zing 时间: 2006-4-12 12:50 标题: zt-C51±à??:2005°?uCOS?ò C51????????

C51±à??:2005°?uCOS?ò C51???????????????? [pwl999] 2005-1-24 11:40:02
×??ü????????uCOS c51????????
???é×??????±?ò·?????????·?????×???±????????ù??????×?????±??????í?????????????ó??
×?uCOS?????????ù??·???
???????ó???à?à????????????

Chapter 1 [pwl999] 2005-1-24 11:43:25
uCOS-?ò C51????±???
??????????×????? CyberTeam ?í?°??
?¨1?????±???????°/?ó?¨??????
?°/?ó?¨???????????ó???·?????·?é???÷??±ê??????????±ê?????????????????à????·?????
?ò??±ê????????±ê????????·??ú???????ì?????±?????????¤??×?????×??????é???????·???ù
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?????÷???·???¨?????????¨?????÷???·???à????±ê???????ê??????
???±?????¨uCOS???????????ò·??????????????????ó??????????????????????????????????
??·??ú???ò??uCOS???§???±??????×???????×??????????????¨??uCOS????IDLE????????????
?·???????????????????????????·???????????????????????¤×÷?????????????????ú?ú????
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??????
??????????
????????????????CPU?????????±???¤×÷??CPU???¤×÷?????÷???????????????????¤×÷????
CPU???ê??????????????????·??????ò???ó??????IDLE??????????????????????·??ú??°ü?¨
???±???????°/?ó?¨??????????????????????????????????
°???uCOS??????????????????·??????à??
1?????? ?¨Event????°ü?¨??????(Semaphores)??????±ê??×é(Flag)??????(Message Box)??
????????(Message Queue)??
2???±???¨Time Tick????°ü?¨?±?????±?????????±??
3???????¨Interrupt????????·????÷??event??
??????1?????????¨??????????2??3??×?????·????????ù???????????????????????????±??
?¨?¨?±?????????¨?÷???ì??????????
?±?????????????????????????????????ò????????????????????????????????
?°/?ó?¨?????????????????????????ú?ú?????÷???·?????????é??????±?????°????¨?±?é
?????????é?????????????????ì???±??????×????????????????é?????¨?±?¨?±??????????
?¨2??uCOS C51??????×?±??¤×÷??
2004?ê8??·????????é???ò????±???uCOS-?ò ??2°??·??×?±??§?°RTOS???ò?????°????????
RTOS?????¤×÷???à??????????????3??4???????±??12???????±?ò?????????????è????????
??????????°?uCOS??????c51????????RTOS?§?°????????????
?ò????OS?ò?ù????????????????????Down??????????????OS???ò??×?????OS??????????????
OS????????????????OS???????????ú????????????????×?????±??????÷????????????uCOS??
????????????????????uCOS c51??????????????°??ú??????OS???????????ú???????????÷±?
???à???????????????????????????ó???±??????????????????????????????
×??????????????????????é??????uCOS-?ò ??2°??·?????ê??±???°??????ó±?±????¨????2??
°????????ò?????¤×÷?è???????????????ù??°??í?????????????????é^_^,???à??9????????
????????×?????????????±??????°?ì?????á??????????????????uCOS??×??????????·??×???
????uCOS-?ò???é????????????????????×??¨????×????????????é???±?ò???????á??×?±?
????°????ì?????????÷°×?????÷?????????????????±???????????????????ó±?±????°?ó????
?????à???????????????????ó?????????¨°???
??????uCOS????????????±??é?????????????ú????????C51Windows?·??±à?????????·??????
Keil C?????????ì?????????¨??2??3?ì?????°??????????????C51????±à??×????á????????
????/????????????????C&Asm?ì??±à????????????????CPU??uCOS??????C???????????ú????
???????????????????????????¨?ó°??±??????
??uCOS-?ò ??2°??·?????????ú????????C51Windows?·??±à?????????·????±??é??????????
????×??????????????????¨?ó???è???????????÷??????
uCOS??C51???é?????ê??????????????????uCOS??C51????×????????????????ò?????à??°?±?
?????????ê????????????????????°?±??????ú?????ó????"uCOS C51????????"???à?????à??
????????????×?????×÷??????????????????????????????????×???????????°????????ü????
·¨±????????ò??????????·???????×??????ó?à?????????í?ó?????????±??????????????????
?????????????????????????ò?????????°±????ù???????ù???????????ó?????ú????
?????????ú???????????¨???ó???????????±????
?¨3??uCOS C51????????????
1???¤????
uCOS 2.52°???
Keil C V6.23a??
2??uCOS V2.52???????á?????????ù?è??????????
A???????í?÷????????????
OS_CORE.C
OS_FLAG.C
OS_MBOX.C
OS_MEM.C
OS_MUTEX.C
OS_Q.C
OS_SEM.C
OS_TASK.C
OS_TIME.C
uCOS_II.C
uCOS_II.H
??????????c51?????????????????è??????????????????????????
B?????????à??????????
INCLUDES.H?? °ü??C51??±ê×????·????????"pdata"??c51???ü×??????¨??
OS_CFG.H?? "OS_TICKS_PER_SEC"??" OS_FLAGS"×????????è????????
C???????í?÷?à??????????
OS_CPU.H?? ?????à??????????·?·¨??????????·??ò?????????????ê?¨?????è????????
OS_CPU_A.ASM?? OSTickISR()??OSStartHighRdy()??OSCtxSw()??OSIntCtxSw()??????????
??±à???????????????????ü??
OS_CPU_C.C??OSTaskStkInit()??????±à????
?¨4??uCOS C51????????????????
1??C51???????á????
???????????????????????????????ù????±??ê???é????
A?? ??????????
c51?????????????????×???·??"?STACK"??????????????"SP"?????????ú?¤·??ò???ò??????
??????·?????51??????RAM?¨idata??????"?STACK"·??????ù??????RAM????????×??ó?????ù
????????????·??§?????STACK??????RAM??×?????(0x80?ò??0xFF)??
B?? ??????????
c51????????????????OS????????LARGE±à??????,?ù??????????????????"?C_XBP"?? ?????ú
?¤·??ò???ò????????????·?????51??????RAM?¨xdata??????
C?? C51????????????±??¤??
????????????????±??¤?????????????ò??uCOS??????????????±??í??????????????????·?
?ú??±??¤Task1??CPU?????÷??SP??????Task2????????????Task2??CPU?????÷????C51??????
???????±?ò??±à???÷?á×???±??¤CPU???????÷???ù??????·????±?????÷??OSIntCtxSw()????
????????±??¤?????÷??
C51???????÷??????????·????????é???¨????????±??í???è??reentrant????
???? ?????????÷????
???? ?÷??·?reentrant???????????????????×?÷????????????
???? ?÷??·?reentrant???????????????×?÷????????????
???? ?÷??reentrant??????
t0_isr:
PUSH ACC
PUSH B
PUSH DPH
PUSH DPL
PUSH PSW
MOV    PSW,#00H
PUSH AR0
PUSH AR1
PUSH AR2
PUSH AR3
PUSH AR4
PUSH AR5
PUSH AR6
PUSH AR7

???§?ú??

POP    AR7
POP    AR6
POP    AR5
POP    AR4
POP    AR3
POP    AR2
POP    AR1
POP    AR0
POP    PSW
POP    DPL
POP    DPH
POP    B
POP    ACC
RETI
?ò??uCOS???ù??????????±????????????????ò?????????è?????????????é??????????±??¤??
?????????é???????¤??????c51?????????¨×??????????ò??c51±à???÷??°?±???????????????
?????ò????????????
2??uCOS C51?????????±????????×÷??
????????????????????????????????????????????????????
±??¤Task1??CPU?????÷?? ?×????CPU?????÷°?????????Task1??????????????????Task1????
????????Task1??????????
SP???????C_XBP = Task2 ?????????????????·??
????Task2??CPU?????÷????Task2???????????????????????????????????ó????Task2??????
????????CPU?????÷????
??????·?·¨?????à????????×???uCOS?????????????í??????????

??×? [shenxian] 2005-1-24 11:45:55

Chapter 2 [pwl999] 2005-1-24 11:48:34
3??INCLUDES.H????????
??????
"pdata"??C51???ü×????ù?????????¨??

???ú????
#include <reg52.h>

#include <stdio.h>
#include <string.h>
#include <ctype.h>
#include <stdlib.h>
#include <setjmp.h>

#define TASK_REENTRANT    large reentrant
#define KCREENTRANT       large reentrant

#include "os_cpu.h"
#include "os_cfg.h"

#define data ucos51_data
#define idata ucos51_idata
#define pdata ucos51_pdata
#define xdata ucos51_xdata

#include "ucos_ii.h"
4??OS_CPU.H????????
typedef unsigned char  BOOLEAN;
typedef unsigned char  INT8U;
typedef signed char  INT8S;
typedef unsigned int INT16U;
typedef signed int INT16S;
typedef unsigned long  INT32U;
typedef signed long  INT32S;
typedef float       FP32;

typedef unsigned char  OS_STK;

#define BYTE          INT8S
#define UBYTE       INT8U
#define WORD          INT16S
#define UWORD       INT16U
#define LONG          INT32S
#define ULONG       INT32U

Chapter 3 [pwl999] 2005-1-24 11:55:14
5??OS_CPU_A.ASM????????
??????
1??C51?????±?????÷?????????ò
2??Asm????" ?C_XBP"??" ?STACK'??????
3????????????·??ò?????????????????ó???????????????ó????????

???ú????
         NAME OS_CPU_A

;******************************************************************
;                                  PUBLIC and EXTERNAL REFERENCES
;******************************************************************

?PR?_?OSStartHighRdy?OS_CPU_A    SEGMENT    CODE
?PR?_?OSCtxSw?OS_CPU_A             SEGMENT    CODE
?PR?_?OSIntCtxSw?OS_CPU_A          SEGMENT    CODE
?PR?_?OSTickISR?OS_CPU_A          SEGMENT    CODE
?STACK                            SEGMENT    IDATA
DT?OS_CPU_A                      SEGMENT    DATA

PUBLIC  _?OSTickISR
PUBLIC  _?OSStartHighRdy
PUBLIC  _?OSCtxSw
PUBLIC  _?OSIntCtxSw
PUBLIC  OSTickRate
PUBLIC  OSTickCtr

EXTRN DATA (?C_XBP)
EXTRN XDATA (OSTCBCur)
EXTRN XDATA (OSTCBHighRdy)
EXTRN XDATA (OSPrioCur)
EXTRN XDATA (OSPrioHighRdy)
EXTRN XDATA (OSRunning)

EXTRN CODE (_?OSIntEnter)
EXTRN CODE (_?OSIntExit)
EXTRN CODE (_?OSTimeTick)
EXTRN CODE (_?OSTaskSwHook)

??~ [pwl999] 2005-1-24 12:04:14
???í?±??????16k??????????????°??????????????í????°???????·???????

  [caoqing] 2005-1-24 12:56:40

????,?? [huzimax] 2005-1-24 13:32:38

[??±?] 2005-1-24 13:42:43

??????????????????×??????????????????????????????ê???±???¨?????? [?ú?????ì] 2005-1-24 13:56:47

good?? [leifeng] 2005-1-24 18:33:31

Chapter 4 [pwl999] 2005-1-24 19:31:46
;******************************************************************
;                                        MACRO DEFINE
;******************************************************************

PUSHALL    MACRO
         PUSH       ACC
         PUSH       B
         PUSH       DPH
         PUSH       DPL
         PUSH       PSW

         IRP       REG, <R0, R1, R2, R3, R4, R5, R6, R7>
         MOV       A,    REG
         PUSH       ACC
         ENDM

         ENDM


POPALL    MACRO
         IRP       REG, <R7, R6, R5, R4, R3, R2, R1, R0>
         POP       ACC
         MOV       REG, A
         ENDM

         POP       PSW
         POP       DPL
         POP       DPH
         POP       B
         POP       ACC
         ENDM

Chapter 5 [pwl999] 2005-1-24 19:34:13
LoadXBP    MACRO
         MOV       DPH, ?C_XBP
         MOV       DPL, ?C_XBP+1
         ENDM


SaveXBP    MACRO
         ;PUSH       IE
         ;CLR       EA
         MOV       ?C_XBP,  DPH
         MOV       ?C_XBP+1,DPL
         ;POP       IE
         ENDM


LoadReg    MACRO    REG
         MOVX       A,    @DPTR
         MOV       REG, A
         ENDM


SaveReg    MACRO    REG
         MOV       A,    REG
         MOVX       @DPTR,  A
         ENDM

Chapter 6 [pwl999] 2005-1-24 19:34:59
;******************************************************************
;                                        VARIABLE DEFINE
;******************************************************************

         RSEG       ?STACK
         DS       1                                     ;

         RSEG       DT?OS_CPU_A
OSTickRate:
         DS       1
OSTickCtr:
         DS       1

;******************************************************************
;                                  void _?OSStartHighRdy(void);
;******************************************************************

         RSEG       ?PR?_?OSStartHighRdy?OS_CPU_A
_?OSStartHighRdy:

         LCALL    _?OSTaskSwHook

         ; OSRunning = TRUE;
         MOV       DPL,       #LOW(OSRunning)
         MOV       DPH,       #HIGH(OSRunning)
         SaveReg    #01

         LJMP       ?C_XBP_Load

Chapter 7 [pwl999] 2005-1-24 19:36:32
;******************************************************************
;                                  void OSCtxSw(void);
;******************************************************************

         RSEG       ?PR?_?OSCtxSw?OS_CPU_A
_?OSCtxSw:
         PUSHALL
SP_Offset:
         LoadXBP

         MOV       A,    SP
         CLR       C
         SUBB       A,    #?STACK-1
         MOV       R5,    A
         INC       A
         CLR       C
         XCH       A,    DPL
         SUBB       A,    DPL
         JNC       SP_Save
         DEC       DPH
SP_Save:
         MOV       DPL, A

         SaveXBP

Chapter 8 [pwl999] 2005-1-24 19:37:17
         SaveREG    R5

         MOV       R0,    #?STACK-1
Stack_Save_Loop:
         INC       DPTR
         INC       R0
         SaveREG    @R0
         DJNZ       R5,    Stack_Save_Loop

         ;POPALL

         ; OSTCBCur->OSTCBStkPtr = ?C_XBP;
         MOV       DPL, #LOW(OSTCBCur)
         MOV       DPH, #HIGH(OSTCBCur)
         INC       DPTR
         LoadReg    R0
         INC       DPTR
         LoadReg    DPL
         MOV       DPH, R0
         INC       DPTR
         SaveReg    ?C_XBP
         INC       DPTR
         SaveReg    ?C_XBP+1

Chapter 9 [pwl999] 2005-1-24 19:39:21
         ; OSTCBCur = OSTCBHighRdy;
         MOV       DPL, #LOW(OSTCBHighRdy)
         MOV       DPH, #HIGH(OSTCBHighRdy)
         LoadReg    R0
         INC       DPTR
         LoadReg    R1
         INC       DPTR
         LoadReg    R2
         MOV       DPL, #LOW(OSTCBCur)
         MOV       DPH, #HIGH(OSTCBCur)
         SaveReg    R0
         INC       DPTR
         SaveReg    R1
         INC       DPTR
         SaveReg    R2

         ; OSPrioCur = OSPrioHighRdy;
         MOV       DPL, #LOW(OSPrioHighRdy)
         MOV       DPH, #HIGH(OSPrioHighRdy)
         LoadReg    R0
         MOV       DPL, #LOW(OSPrioCur)
         MOV       DPH, #HIGH(OSPrioCur)
         SaveReg    R0

Chapter 10 [pwl999] 2005-1-24 19:39:54
?C_XBP_Load:
         ; ?C_XBP = OSTCBCur->OSTCBStkPtr;
         MOV       DPL, #LOW(OSTCBCur)
         MOV       DPH, #HIGH(OSTCBCur)
         INC       DPTR
         LoadReg    R0
         INC       DPTR
         LoadReg    DPL
         MOV       DPH, R0
         INC       DPTR
         LoadReg    ?C_XBP
         INC       DPTR
         LoadReg    ?C_XBP+1

SP_Load:
         LoadXBP

         LoadREG    R5

         MOV       R0,    #?STACK-1
Stack_Load_Loop:
         INC       DPTR
         INC       R0
         LoadREG    @R0
         DJNZ       R5,    Stack_Load_Loop

         MOV       SP,    R0

         INC       DPTR
         SaveXBP

         ; OSTCBCur->OSTCBStkPtr = ?C_XBP;

         POPALL

         RET

Chapter 11 [pwl999] 2005-1-24 19:40:30
;******************************************************************
;                                  void OSIntCtxSw(void);
;******************************************************************

         RSEG       ?PR?_?OSIntCtxSw?OS_CPU_A
_?OSIntCtxSw:
         DEC       SP
         DEC       SP
         DEC       SP
         DEC       SP
         LJMP       SP_Offset

;******************************************************************
;                                  void OSTickISR(void);
;******************************************************************

         CSEG       AT       000BH
         LJMP       _?OSTickISR

         RSEG       ?PR?_?OSTickISR?OS_CPU_A
_?OSTickISR:
         LCALL    ResetHwIntr
         PUSHALL

         ;DEC       OSTickCtr
         ;MOV       A,    OSTickCtr
         ;JNZ       OSTick_End
         ;MOV       OSTickCtr,  OSTickRate

         LCALL    _?OSIntEnter
         LCALL    _?OSTimeTick
         LCALL    _?OSIntExit
OSTick_End:
         POPALL
         RET

ResetHwIntr:
         RETI

         END

Chapter 12 [pwl999] 2005-1-24 19:41:15
6??OS_CPU_C.C????????
??????
1??OSTaskStkInit??????pdata??????????????????·???

???ú????
OS_STK  *OSTaskStkInit (void (*task)(void *pd) KCREENTRANT, void *pdata, OS_STK
*ptos, INT16U opt) KCREENTRANT
{
INT8U * stk;

opt = opt;                         /* 'opt' is not used, prevent
warning                   */
stk = (INT8U *) ptos;             /* Load stack
pointer                                     */

/*
stk          -= sizeof(void *);
*(void**)stk    = pdata;
*/

/*
*--stk          = 0x01;
*--stk          = ((INT16U)pdata >> 8);
*--stk          = ((INT16U)pdata & 0xFF);
*/

*--stk          = ((INT32U)pdata & 0xFF0000) >> 8;
*--stk          = ((INT32U)pdata & 0x00FF00) >> 4;
*--stk          = (INT32U)pdata & 0xFF;

*--stk          = 7;
*--stk          = 6;
*--stk          = 5;
*--stk          = 4;
/*
*--stk          = 3;
*--stk          = 2;
*--stk          = 1;
*/
/*
stk          -= sizeof(void *);
*(void**)stk    = pdata;
*/
*--stk          = 0x01;
*--stk          = ((INT16U)pdata >> 8);
*--stk          = ((INT16U)pdata & 0xFF);

*--stk          = 0;
*--stk          = PSW;
*--stk          = 'L';
*--stk          = 'H';
*--stk          = 'B';
*--stk          = 'A';
*--stk          = ((INT16U)task >> 8);
*--stk          = ((INT16U)task & 0x00FF);

*--stk          = 15;

return ((void *)stk);
}

7????????
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