uCOSII-V2.52在单片机STC12C5A60S2上移植方法

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1、uCOSII V2.52移植到STC12C5A60S2单片机上uCOSII版本：V2.52单片机型号：STC12C5A60S2说明：代码注释中有乱码，不影响程序，因为编码机制不同导致修改文件1：启动文件STARTUP.A51，修改部分红色字体标出$NOMOD51;-; This file is part of the C51 Compiler package; Copyright (c) 1988-2005 Keil Elektronik GmbH and Keil Software, Inc.; Version 8.01; * *;-; STARTUP.A51: This code is e

2、xecuted after processor reset.; To translate this file use A51 with the following invocation:; A51 STARTUP.A51; To link the modified STARTUP.OBJ file to your application use the following; Lx51 invocation:; Lx51 your object file list, STARTUP.OBJ controls;-; User-defined Power-On Initialization of M

3、emory; With the following EQU statements the initialization of memory; at processor reset can be defined:; IDATALEN: IDATA memory size ; Note: The absolute start-address of IDATA memory is always 0; The IDATA space overlaps physically the DATA and BIT areas.IDATALEN EQU 80H; XDATASTART: XDATA memory

4、 start address ; The absolute start address of XDATA memoryXDATASTART EQU 0 ; XDATALEN: XDATA memory size ; The length of XDATA memory in bytes.XDATALEN EQU 0 ; PDATASTART: ppdata memory start address ; The absolute start address of ppdata memoryPDATASTART EQU 0H; PDATALEN: ppdata memory size ; The

5、length of ppdata memory in bytes.PDATALEN EQU 0H;-; Reentrant Stack Initialization; The following EQU statements define the stack pointer for reentrant; functions and initialized it:; Stack Space for reentrant functions in the SMALL model.; IBPSTACK: Enable SMALL model reentrant stack; Stack space f

6、or reentrant functions in the SMALL model.IBPSTACK EQU 0 ; set to 1 if small reentrant is used.; IBPSTACKTOP: End address of SMALL model stack ; Set the top of the stack to the highest location.IBPSTACKTOP EQU 0xFF +1 ; default 0FFH+1 ; ; Stack Space for reentrant functions in the LARGE model. ; XBP

7、STACK: Enable LARGE model reentrant stack; Stack space for reentrant functions in the LARGE model.XBPSTACK EQU 1 ; set to 1 if large reentrant is used.; XBPSTACKTOP: End address of LARGE model stack ; Set the top of the stack to the highest location.XBPSTACKTOP EQU 0xFFFF +1 ; default 0FFFFH+1 ; ; S

8、tack Space for reentrant functions in the COMPACT model. ; PBPSTACK: Enable COMPACT model reentrant stack; Stack space for reentrant functions in the COMPACT model.PBPSTACK EQU 0 ; set to 1 if compact reentrant is used.; PBPSTACKTOP: End address of COMPACT model stack ; Set the top of the stack to t

9、he highest location.PBPSTACKTOP EQU 0xFF +1 ; default 0FFH+1 ; ;-; Memory Page for Using the Compact Model with 64 KByte xdata RAM; Compact Model Page Definition; Define the XDATA page used for ppdata variables. ; PPAGE must conform with the PPAGE set in the linker invocation.; Enable ppdata memory

10、page initalizationPPAGEENABLE EQU 0 ; set to 1 if ppdata object are used.; PPAGE number ; uppermost 256-byte address of the page used for ppdata variables.PPAGE EQU 0; SFR address which supplies uppermost address byte ; most 8051 variants use P2 as uppermost address bytePPAGE_SFR DATA 0A0H; ;-; Stan

11、dard SFR Symbols ACC DATA 0E0HB DATA 0F0HSP DATA 81HDPL DATA 82HDPH DATA 83H NAME ?C_STARTUPPUBLIC OSStack PUBLIC OSStkStart?C_C51STARTUP SEGMENT CODE?STACK SEGMENT IDATA RSEG ?STACKOSStack:DS 50HOSStkStart IDATA OSStack-1 EXTRN CODE (?C_START) PUBLIC ?C_STARTUP CSEG AT 0?C_STARTUP: LJMP STARTUP1 RS

12、EG ?C_C51STARTUPSTARTUP1:IF IDATALEN 0 MOV R0,#IDATALEN - 1 CLR AIDATALOOP: MOV R0,A DJNZ R0,IDATALOOPENDIFIF XDATALEN 0 MOV DPTR,#XDATASTART MOV R7,#LOW (XDATALEN) IF (LOW (XDATALEN) 0 MOV R6,#(HIGH (XDATALEN) +1 ELSE MOV R6,#HIGH (XDATALEN) ENDIF CLR AXDATALOOP: MOVX DPTR,A INC DPTR DJNZ R7,XDATAL

13、OOP DJNZ R6,XDATALOOPENDIFIF PPAGEENABLE 0 MOV PPAGE_SFR,#PPAGEENDIFIF PDATALEN 0 MOV R0,#LOW (PDATASTART) MOV R7,#LOW (PDATALEN) CLR APDATALOOP: MOVX R0,A INC R0 DJNZ R7,PDATALOOPENDIFIF IBPSTACK 0EXTRN DATA (?C_IBP) MOV ?C_IBP,#LOW IBPSTACKTOPENDIFIF XBPSTACK 0EXTRN DATA (?C_XBP) MOV ?C_XBP,#HIGH

14、XBPSTACKTOP MOV ?C_XBP+1,#LOW XBPSTACKTOPENDIFIF PBPSTACK 0EXTRN DATA (?C_PBP) MOV ?C_PBP,#LOW PBPSTACKTOPENDIF MOV SP,#?STACK-1; This code is required if you use L51_BANK.A51 with Banking Mode 4; Code Banking; Select Bank 0 for L51_BANK.A51 Mode 4#if 0 ; Initialize bank mechanism to code bank 0 whe

15、n using L51_BANK.A51 with Banking Mode 4.EXTRN CODE (?B_SWITCH0) CALL ?B_SWITCH0 ; init bank mechanism to code bank 0#endif; LJMP ?C_START END修改添加文件2：OS_CPU_A.ASM$NOMOD51NAME OS_CPU_A ;EA BIT 0A8H.7TR0 BIT 088H.4TH0 DATA 08CHTL0 DATA 08AHET0 BIT 0A8H.1?PR?OSStartHighRdy?OS_CPU_A SEGMENT CODE?PR?OSCt

16、xSw?OS_CPU_A SEGMENT CODE?PR?OSIntCtxSw?OS_CPU_A SEGMENT CODE?PR?OSTickISR?OS_CPU_A SEGMENT CODE?PR?_?serial?OS_CPU_A SEGMENT CODEEXTRN IDATA (OSTCBCur)EXTRN IDATA (OSTCBHighRdy)EXTRN IDATA (OSRunning)EXTRN IDATA (OSPrioCur)EXTRN IDATA (OSPrioHighRdy)EXTRN CODE (_?OSTaskSwHook)EXTRN CODE (_?OSIntEnt

17、er)EXTRN CODE (_?OSIntExit)EXTRN CODE (_?OSTimeTick)EXTRN CODE (_?serial)EXTRNDATA (?C_XBP)EXTRNIDATA (OSStack)EXTRNIDATA (OSStkStart)PUBLIC OSStartHighRdyPUBLIC OSCtxSwPUBLIC OSIntCtxSwPUBLIC OSTickISRPUBLIC SerialISR;?STACK SEGMENT IDATA;RSEG ?STACK;OSStack:;DS 50H;OSStkStart IDATA OSStack-1PUSHAL

18、L MACROPUSH PSWPUSH ACCPUSH BPUSH DPLPUSH DPHMOV A,R0 ;R0-R7PUSH ACCMOV A,R1PUSH ACCMOV A,R2PUSH ACCMOV A,R3PUSH ACCMOV A,R4PUSH ACCMOV A,R5PUSH ACCMOV A,R6PUSH ACCMOV A,R7PUSH ACCENDMPOPALL MACROPOP ACC ;R0-R7MOV R7,APOP ACCMOV R6,APOP ACCMOV R5,APOP ACCMOV R4,APOP ACCMOV R3,APOP ACCMOV R2,APOP ACC

19、MOV R1,APOP ACCMOV R0,APOP DPHPOP DPLPOP BPOP ACCPOP PSWENDM;-RSEG ?PR?OSStartHighRdy?OS_CPU_AOSStartHighRdy:USING 0 ;LCALL _?OSTaskSwHookOSCtxSw_in:;OSTCBCur = DPTRMOV R0,#LOW (OSTCBCur) INC R0MOV DPH,R0INC R0MOV DPL,R0;OSTCBCur-OSTCBStkPtr = DPTRINC DPTRMOVX A,DPTRMOV R0,AINC DPTRMOVX A,DPTRMOV R1

20、,AMOV DPH,R0MOV DPL,R1;*UserStkPtr = R5MOVX A,DPTRMOV R5,A ;MOV R0,#OSStkStartrestore_stack:INC DPTRINC R0MOVX A,DPTRMOV R0,ADJNZ R5,restore_stack;SPMOV SP,R0;?C_XBPINC DPTRMOVX A,DPTRMOV ?C_XBP,AINC DPTRMOVX A,DPTRMOV ?C_XBP+1,A;OSRunning=TRUEMOV R0,#LOW (OSRunning)MOV R0,#01POPALLSETB ET0SETB EARE

21、TI;-RSEG ?PR?OSCtxSw?OS_CPU_AOSCtxSw:PUSHALLOSIntCtxSw_in:;MOV A,SPCLR CSUBB A,#OSStkStartMOV R5,A ;OSTCBCur = DPTR MOV R0,#LOW (OSTCBCur) INC R0MOV DPH,R0 INC R0MOV DPL,R0;OSTCBCur-OSTCBStkPtr = DPTRINC DPTRMOVX A,DPTRMOV R0,AINC DPTRMOVX A,DPTRMOV R1,AMOV DPH,R0MOV DPL,R1;MOV A,R5MOVX DPTR,AMOV R0

22、,#OSStkStart ;save_stack:INC DPTRINC R0MOV A,R0MOVX DPTR,ADJNZ R5,save_stack;?C_XBPINC DPTRMOV A,?C_XBPMOVX DPTR,AINC DPTRMOV A,?C_XBP+1MOVX DPTR,ALCALL _?OSTaskSwHook;OSTCBCur = OSTCBHighRdyMOV R0,#OSTCBCurMOV R1,#OSTCBHighRdyMOV A,R1MOV R0,AINC R0INC R1MOV A,R1MOV R0,AINC R0INC R1MOV A,R1MOV R0,A;

23、OSPrioCur = OSPrioHighRdy ?,?MOV R0,#OSPrioCurMOV R1,#OSPrioHighRdyMOV A,R1MOV R0,ALJMP OSCtxSw_in;-RSEG ?PR?OSIntCtxSw?OS_CPU_AOSIntCtxSw:;SP=SP-4MOV A,SPCLR CSUBB A,#4MOV SP,ALJMP OSIntCtxSw_in;-CSEG AT 000BH ;OSTickISRLJMP OSTickISR ;RSEG ?PR?OSTickISR?OS_CPU_AOSTickISR:USING 0PUSHALLCLR TR0MOV T

24、H0,#70H ;?Tick=50?/?(?0.02?/?)MOV TL0,#00H ;OS_CPU_C.C ? OS_TICKS_PER_SECSETB TR0LCALL _?OSIntEnterLCALL _?OSTimeTickLCALL _?OSIntExitPOPALLRETICSEG AT 0023HLJMP SerialISRRSEG ?PR?_?serial?OS_CPU_ASerialISR:USING 0PUSHALLCLR EALCALL _?serialSETB EAPOPALLRETI;-END;-修改添加文件3：OS_CPU_C.c,添加修改部分红色字体标出#def

25、ine OS_CPU_GLOBALS#include includes.h/* OS INITIALIZATION HOOK* (BEGINNING)* Description: This function is called by OSInit() at the beginning of OSInit().* Arguments : none* Note(s) : 1) Interrupts should be disabled during this call.*/#if OS_CPU_HOOKS_EN 0 & OS_VERSION 203void OSInitHookBegin (voi

26、d)#endif/* OS INITIALIZATION HOOK* (END)* Description: This function is called by OSInit() at the end of OSInit().* Arguments : none* Note(s) : 1) Interrupts should be disabled during this call.*/#if OS_CPU_HOOKS_EN 0 & OS_VERSION 203void OSInitHookEnd (void)#endif/*$PAGE*/* TASK CREATION HOOK* Desc

27、ription: This function is called when a task is created.* Arguments : ptcb is a pointer to the task control block of the task being created.* Note(s) : 1) Interrupts are disabled during this call.*/#if OS_CPU_HOOKS_EN 0 void OSTaskCreateHook (OS_TCB *ptcb) ptcb = ptcb; /* Prevent compiler warning */

28、#endif/* TASK DELETION HOOK* Description: This function is called when a task is deleted.* Arguments : ptcb is a pointer to the task control block of the task being deleted.* Note(s) : 1) Interrupts are disabled during this call.*/#if OS_CPU_HOOKS_EN 0 void OSTaskDelHook (OS_TCB *ptcb) ptcb = ptcb;

29、/* Prevent compiler warning */#endif/* IDLE TASK HOOK* Description: This function is called by the idle task. This hook has been added to allow you to do * such things as STOP the CPU to conserve power.* Arguments : none* Note(s) : 1) Interrupts are enabled during this call.*/#if OS_CPU_HOOKS_EN 0 &

30、 OS_VERSION = 251void OSTaskIdleHook (void)#endif/* STATISTIC TASK HOOK* Description: This function is called every second by uC/OS-IIs statistics task. This allows your * application to add functionality to the statistics task.* Arguments : none*/#if OS_CPU_HOOKS_EN 0 void OSTaskStatHook (void)#end

31、if/*$PAGE*/* INITIALIZE A TASKS STACK* Description: This function is called by either OSTaskCreate() or OSTaskCreateExt() to initialize the* stack frame of the task being created. This function is highly processor specific.* Arguments : task is a pointer to the task code* pdata is a pointer to a use

32、r supplied data area that will be passed to the task* when the task first executes.* ptos is a pointer to the top of stack. It is assumed that ptos points to* a free entry on the task stack. If OS_STK_GROWTH is set to 1 then * ptos will contain the HIGHEST valid address of the stack. Similarly, if*

33、OS_STK_GROWTH is set to 0, the ptos will contains the LOWEST valid address* of the stack.* opt specifies options that can be used to alter the behavior of OSTaskStkInit().* (see uCOS_II.H for OS_TASK_OPT_?).* Returns : Always returns the location of the new top-of-stack once the processor registers

34、have* been placed on the stack in the proper order.* Note(s) : Interrupts are enabled when your task starts executing. You can change this by setting the* PSW to 0x0002 instead. In this case, interrupts would be disabled upon task startup. The* application code would be responsible for enabling inte

35、rrupts at the beginning of the task* code. You will need to modify OSTaskIdle() and OSTaskStat() so that they enable * interrupts. Failure to do this will make your system crash!*/OS_STK *OSTaskStkInit (void (*task)(void *pd), void *ppdata, OS_STK *ptos, INT16U opt) OS_STK *stk; opt = opt; /* opt is

36、 not used, prevent warning */ stk = (OS_STK *)ptos; /* Load stack pointer */ *stk+=15;/ *stk+ = (INT16U)task & 0xff;/8 *stk+ = (INT16U)task 8;/8 *stk+ = 0x00; /PSW *stk+ = 0x0a; /ACC *stk+ = 0x0b;/B *stk+ = 0x00; /DPL *stk+ = 0x00; /DPH *stk+ = 0x00; /R0 *stk+ = (INT16U)ppdata & 0xff; /R1 *stk+ = (I

37、NT16U)ppdata 8; /R2 *stk+ = 0x01; /R3 *stk+ = 0x04; /R4 *stk+ = 0x05; /R5 *stk+ = 0x06; /R6 *stk+ = 0x07;/R6*stk+ = (INT16U)(ptos+MaxStkSize) 8; /8 *stk+ = (INT16U)(ptos+MaxStkSize) & 0xff;/8 return (OS_STK *)ptos);/*$PAGE*/* INITIALIZE A TASKS STACK FOR FLOATING POINT EMULATION* Description: This f

38、unction MUST be called BEFORE calling either OSTaskCreate() or OSTaskCreateExt() in* order to initialize the tasks stack to allow the task to use the Borland floating-point * emulation. The returned pointer MUST be used in the task creation call.* Ex.: OS_STK TaskStk1000;* void main (void)* * OS_STK

39、 *ptos;* OS_STK *pbos;* INT32U size;* OSInit();* .* .* ptos = &TaskStk999;* pbos = &TaskStk0;* psize = 1000;* OSTaskStkInit_FPE_x86(&ptos, &pbos, &size);* OSTaskCreate(Task, (void *)0, ptos, 10);* .* .* OSStart();* * Arguments : pptos is the pointer to the tasks top-of-stack pointer which would be p

40、assed to * OSTaskCreate() or OSTaskCreateExt().* ppbos is the pointer to the new bottom of stack pointer which would be passed to* OSTaskCreateExt().* psize is a pointer to the size of the stack (in number of stack elements). You * MUST allocate sufficient stack space to leave at least 384 bytes for the * floating-point emulation.* Returns : The new size of the stack