你的问题解决了吗？我也急啊

12楼你的问题解决了吗？

有心就好！谢谢~

从官方文档上找到问题所在了！ You should note that these prototypes are prefixed with the special keyword __arm. This is an IAR keyword that indicates that these functions will run in ARM mode and thus, when called, the compiler will generate the appropriate instructions 所以我干脆就把__arm 都删掉了！ 这部分的编译已经没有问题了 期待下一个问题的出现！ 【另外说明一下：我是从Micrium官网上下的源代码，它是用IAR编译器编译的，所以在Keil上编译有些关键字keil不认识，所以才导致了这一问题】 [ 本帖最后由 ChinaLingBo 于 2011-12-22 14:39 编辑 ]

谢谢，这里的__main是不是和__arm一个意思呢？如何解决这个问题呢？求更详细的解答！

肿么没有人回答啊？这里急用，谢谢了！

求Pdf文档

好东西，楼主好人，分享了！！！

拿走了，问一个初级问题啊，AVR是不是ATmel的？

太高深了，时基是个什么东东？初学者见笑了！

谢谢，大概明白了一点，能说的再详细一些吗？:loveliness:

/***********************************************************************************************************                                               TASK #5** Description: This task displays messages sent by Task #4.  When the message is displayed, Task #5*              acknowledges Task #4.**********************************************************************************************************/ void  Task5 (void *data){    char  *rxmsg;    INT8U  err;     data = data;    for (;;) {        rxmsg = (char *)OSMboxPend(TxMbox, 0, &err);                  /* Wait for message from Task #4 */        PC_DispChar(70, 18, *rxmsg, DISP_FGND_YELLOW + DISP_BGND_RED);        OSTimeDlyHMSM(0, 0, 1, 0);                                    /* Wait 1 second                 */        OSMboxPost(AckMbox, (void *)1);                               /* Acknowledge reception of msg  */    }}/*$PAGE*//***********************************************************************************************************                                               CLOCK TASK**********************************************************************************************************/ void  TaskClk (void *data){    char s[40];     data = data;    for (;;) {        PC_GetDateTime(s);        PC_DispStr(0, 24, s, DISP_FGND_BLUE + DISP_BGND_CYAN);        OSTimeDly(OS_TICKS_PER_SEC);    }}

/***********************************************************************************************************                                             CREATE TASKS**********************************************************************************************************/ static  void  TaskStartCreateTasks (void){    OSTaskCreateExt(TaskClk,                   (void *)0,                   &TaskClkStk[TASK_STK_SIZE - 1],                   TASK_CLK_PRIO,                   TASK_CLK_ID,                   &TaskClkStk[0],                   TASK_STK_SIZE,                   (void *)0,                   OS_TASK_OPT_STK_CHK | OS_TASK_OPT_STK_CLR);     OSTaskCreateExt(Task1,                   (void *)0,                   &Task1Stk[TASK_STK_SIZE - 1],                   TASK_1_PRIO,                   TASK_1_ID,                   &Task1Stk[0],                   TASK_STK_SIZE,                   (void *)0,                   OS_TASK_OPT_STK_CHK | OS_TASK_OPT_STK_CLR);     OSTaskCreateExt(Task2,                   (void *)0,                   &Task2Stk[TASK_STK_SIZE - 1],                   TASK_2_PRIO,                   TASK_2_ID,                   &Task2Stk[0],                   TASK_STK_SIZE,                   (void *)0,                   OS_TASK_OPT_STK_CHK | OS_TASK_OPT_STK_CLR);     OSTaskCreateExt(Task3,                   (void *)0,                   &Task3Stk[TASK_STK_SIZE - 1],                   TASK_3_PRIO,                   TASK_3_ID,                   &Task3Stk[0],                   TASK_STK_SIZE,                   (void *)0,                   OS_TASK_OPT_STK_CHK | OS_TASK_OPT_STK_CLR);     OSTaskCreateExt(Task4,                   (void *)0,                   &Task4Stk[TASK_STK_SIZE-1],                   TASK_4_PRIO,                   TASK_4_ID,                   &Task4Stk[0],                   TASK_STK_SIZE,                   (void *)0,                   OS_TASK_OPT_STK_CHK | OS_TASK_OPT_STK_CLR);     OSTaskCreateExt(Task5,                   (void *)0,                   &Task5Stk[TASK_STK_SIZE-1],                   TASK_5_PRIO,                   TASK_5_ID,                   &Task5Stk[0],                   TASK_STK_SIZE,                   (void *)0,                   OS_TASK_OPT_STK_CHK | OS_TASK_OPT_STK_CLR);} /*$PAGE*//***********************************************************************************************************                                               TASK #1** Description: This task executes every 100 mS and measures the time it task to perform stack checking*              for each of the 5 application tasks.  Also, this task displays the statistics related to*              each task's stack usage.**********************************************************************************************************/ void  Task1 (void *pdata){    INT8U       err;    OS_STK_DATA data;                       /* Storage for task stack data                             */    INT16U      time;                       /* Execution time (in uS)                                  */    INT8U       i;    char        s[80];     pdata = pdata;    for (;;) {        for (i = 0; i < 7; i++) {            PC_ElapsedStart();            err  = OSTaskStkChk(TASK_START_PRIO+i, &data);            time = PC_ElapsedStop();            if (err == OS_NO_ERR) {                sprintf(s, "%4ld        %4ld        %4ld        %6d",                        data.OSFree + data.OSUsed,                        data.OSFree,                        data.OSUsed,                        time);                PC_DispStr(19, 12+i, s, DISP_FGND_YELLOW);            }        }        OSTimeDlyHMSM(0, 0, 0, 100);                       /* Delay for 100 mS                         */    }}/*$PAGE*//***********************************************************************************************************                                               TASK #2** Description: This task displays a clockwise rotating wheel on the screen.**********************************************************************************************************/ void  Task2 (void *data){    data = data;    for (;;) {        PC_DispChar(70, 15, '|',  DISP_FGND_WHITE + DISP_BGND_RED);        OSTimeDly(10);        PC_DispChar(70, 15, '/',  DISP_FGND_WHITE + DISP_BGND_RED);        OSTimeDly(10);        PC_DispChar(70, 15, '-',  DISP_FGND_WHITE + DISP_BGND_RED);        OSTimeDly(10);        PC_DispChar(70, 15, '\\', DISP_FGND_WHITE + DISP_BGND_RED);        OSTimeDly(10);    }}/*$PAGE*//***********************************************************************************************************                                               TASK #3** Description: This task displays a counter-clockwise rotating wheel on the screen.** Note(s)    : I allocated 100 bytes of storage on the stack to artificially 'eat' up stack space.**********************************************************************************************************/ void  Task3 (void *data){    char    dummy[500];    INT16U  i;     data = data;    for (i = 0; i < 499; i++) {        /* Use up the stack with 'junk'                                 */        dummy = '?';    }    for (;;) {        PC_DispChar(70, 16, '|',  DISP_FGND_WHITE + DISP_BGND_BLUE);        OSTimeDly(20);        PC_DispChar(70, 16, '\\', DISP_FGND_WHITE + DISP_BGND_BLUE);        OSTimeDly(20);        PC_DispChar(70, 16, '-',  DISP_FGND_WHITE + DISP_BGND_BLUE);        OSTimeDly(20);        PC_DispChar(70, 16, '/',  DISP_FGND_WHITE + DISP_BGND_BLUE);        OSTimeDly(20);    }}/*$PAGE*//***********************************************************************************************************                                               TASK #4** Description: This task sends a message to Task #5.  The message consist of a character that needs to*              be displayed by Task #5.  This task then waits for an acknowledgement from Task #5*              indicating that the message has been displayed.**********************************************************************************************************/ void  Task4 (void *data){    char   txmsg;                                                     /*这儿为什么用char来定义数据类型呢？*/    INT8U  err;     data  = data;    txmsg = 'A';    for (;;) {        while (txmsg <= 'Z') {            OSMboxPost(TxMbox, (void *)&txmsg);  /* Send message to Task #5                            */            OSMboxPend(AckMbox, 0, &err);        /* Wait for acknowledgement from Task #5              */            txmsg++;                             /* Next message to send                               */        }        txmsg = 'A';                             /* Start new series of messages                       */    }}/*$PAGE*/

/* ********************************************************************************************************* *                                               STARTUP TASK ********************************************************************************************************* */ void  TaskStart (void *data) { #if OS_CRITICAL_METHOD == 3                      /* Allocate storage for CPU status register           */     OS_CPU_SR  cpu_sr; #endif     char       s[80];     INT16S     key;     data = data;                                           /* Prevent compiler warning                 */     PC_DispStr(26,  0, "uC/OS-II, The Real-Time Kernel", DISP_FGND_WHITE + DISP_BGND_RED + DISP_BLINK);     PC_DispStr(33,  1, "Jean J. Labrosse", DISP_FGND_WHITE);     PC_DispStr(36,  3, "EXAMPLE #2", DISP_FGND_WHITE);     PC_DispStr( 0,  9, "Task           Total Stack  Free Stack  Used Stack  ExecTime (uS)", DISP_FGND_WHITE);     PC_DispStr( 0, 10, "-------------  -----------  ----------  ----------  -------------", DISP_FGND_WHITE);     PC_DispStr( 0, 12, "TaskStart():", DISP_FGND_WHITE);     PC_DispStr( 0, 13, "TaskClk()  :", DISP_FGND_WHITE);     PC_DispStr( 0, 14, "Task1()    :", DISP_FGND_WHITE);     PC_DispStr( 0, 15, "Task2()    :", DISP_FGND_WHITE);     PC_DispStr( 0, 16, "Task3()    :", DISP_FGND_WHITE);     PC_DispStr( 0, 17, "Task4()    :", DISP_FGND_WHITE);     PC_DispStr( 0, 18, "Task5()    :", DISP_FGND_WHITE);     PC_DispStr(28, 24, "", DISP_FGND_WHITE + DISP_BLINK);     OS_ENTER_CRITICAL();                                   /* Install uC/OS-II's clock tick ISR        */     PC_VectSet(0x08, OSTickISR);     PC_SetTickRate(OS_TICKS_PER_SEC);                      /* Reprogram tick rate                      */     OS_EXIT_CRITICAL();     PC_DispStr(0, 22, "Determining  CPU's capacity ...", DISP_FGND_WHITE);     OSStatInit();                                          /* Initialize uC/OS-II's statistics         */     PC_DispClrRow(22, DISP_FGND_WHITE + DISP_BGND_BLACK);     AckMbox = OSMboxCreate((void *)0);                     /* Create 2 message mailboxes               */     TxMbox  = OSMboxCreate((void *)0);     TaskStartCreateTasks();                                /* Create all other tasks                   */     PC_DispStr( 0, 22, "#Tasks          : xxxxx  CPU Usage: xxx %", DISP_FGND_WHITE);     PC_DispStr( 0, 23, "#Task switch/sec: xxxxx", DISP_FGND_WHITE);     for (;;) {         sprintf(s, "%5d", OSTaskCtr);                     /* Display #tasks running                    */         PC_DispStr(18, 22, s, DISP_FGND_BLUE + DISP_BGND_CYAN);         sprintf(s, "%3d", OSCPUUsage);                    /* Display CPU usage in %                    */         PC_DispStr(36, 22, s, DISP_FGND_BLUE + DISP_BGND_CYAN);         sprintf(s, "%5d", OSCtxSwCtr);                    /* Display #context switches per second      */         PC_DispStr(18, 23, s, DISP_FGND_BLUE + DISP_BGND_CYAN);         OSCtxSwCtr = 0;                                    /* Clear context switch counter             */         sprintf(s, "V%3.2f", OSVersion() * 0.01);         PC_DispStr(75, 24, s, DISP_FGND_YELLOW + DISP_BGND_BLUE);         switch (TaskFPUFlag) {             case 0:                  PC_DispStr(71, 22, " NO  FPU ", DISP_FGND_BLUE + DISP_BGND_CYAN);                  break;             case 1:                  PC_DispStr(71, 22, " 8087 FPU", DISP_FGND_BLUE + DISP_BGND_CYAN);                  break;             case 2:                  PC_DispStr(71, 22, "80287 FPU", DISP_FGND_BLUE + DISP_BGND_CYAN);                  break;             case 3:                  PC_DispStr(71, 22, "80387 FPU", DISP_FGND_BLUE + DISP_BGND_CYAN);                  break;         }         if (PC_GetKey(&key)) {                             /* See if key has been pressed              */             if (key == 0x1B) {                             /* Yes, see if it's the ESCAPE key          */                 PC_DOSReturn();                            /* Yes, return to DOS                       */             }         }         OSTimeDly(OS_TICKS_PER_SEC);                       /* Wait one second                          */     } } /*$PAGE*/