test.c

照相机功能,根据uc/os操作系统,用c程序写的一个数码相机的简单程序.

/*
*********************************************************************************************************
*                                                uC/OS-II
*                                          The Real-Time Kernel
*
*
*
*                                             DSC Example
*********************************************************************************************************
*/
#include "includes.h"

/*
*********************************************************************************************************
*                                               CONSTANTS
*********************************************************************************************************
*/

#define  TASK_STK_SIZE                 512       /* Size of each task's stacks (# of WORDs)            */
#define  N_TASKS                        4        /* Number of identical tasks                          */

/*
*********************************************************************************************************
*                                               VARIABLES
*********************************************************************************************************
*/

OS_STK        TaskStk[N_TASKS][TASK_STK_SIZE];        /* Tasks stacks                                  */
OS_STK        TaskStartStk[TASK_STK_SIZE];            /* TaskStart  task stack                         */
INT8U         TaskData[N_TASKS];                       /* Parameters to pass to each task               */
OS_EVENT      *KeyQ[2];
void          *KeyMsg[2][2];
INT8U	      Mode = 1; /* 1-prev 2-play 3-setup */


/*
*********************************************************************************************************
*                                           FUNCTION PROTOTYPES
*********************************************************************************************************
*/

void  Task_Pre(void *pdata);              /* Function prototypes of tasks                  */
void  Task_Play(void *pdata);
void  Task_Setup(void *pdata);
void  Task_Sacnkey(void *pdata);
void  TaskStart(void *pdata);                  /* Function prototypes of Startup task           */
static  void  TaskStartCreateTasks(void);                /* Function prototypes of creat task           */
static  void  TaskStartDispInit(void);                /* Function prototypes of Initialization the display          */
static  void  Disp(INT8U);                /* Function prototypes of displaying the information of task         */

/*
*********************************************************************************************************
*                                                MAIN
*********************************************************************************************************
*/

void  main (void)
{
    PC_DispClrScr(DISP_FGND_WHITE + DISP_BGND_BLACK);   /* Clear the screen                         */

    OSInit();                                              /* Initialize uC/OS-II                      */
    PC_DOSSaveReturn();                                    /* Save environment to return to DOS        */
    PC_VectSet(uCOS, OSCtxSw);                             /* Install uC/OS-II's context switch vector */

    KeyQ[0] = OSQCreate(&KeyMsg[0],2);  /* main */
    KeyQ[1] = OSQCreate(&KeyMsg[1],2);  /* dsc */

    OSTaskCreate(TaskStart, (void *)0, &TaskStartStk[TASK_STK_SIZE - 1], 4);
    OSStart();                                             /* Start multitasking                       */
}


/*
*********************************************************************************************************
*                                              STARTUP TASK
*********************************************************************************************************
*/
void  TaskStart (void *pdata)
{
#if OS_CRITICAL_METHOD == 3                                /* Allocate storage for CPU status register */
    OS_CPU_SR  cpu_sr;
#endif
   
    char       *mg;
    INT8U      err,i;

    pdata = pdata;                                         /* Prevent compiler warning                 */

    TaskStartDispInit();                                   /* Initialize the display                   */

    OS_ENTER_CRITICAL();
    PC_VectSet(0x08, OSTickISR);                           /* Install uC/OS-II's clock tick ISR        */
    PC_SetTickRate(OS_TICKS_PER_SEC);                      /* Reprogram tick rate                      */
    OS_EXIT_CRITICAL();

    OSStatInit();                                          /* Initialize uC/OS-II's statistics         */

    /* Create all the application tasks         */
    for (i = 0; i < N_TASKS; i++) {                        /* Create tasks           */
        TaskData[i] =  i;                             /* Each task will display its own information    */
    }
		
    OSTaskCreate(Task_Sacnkey, (void *)&TaskData[0], &TaskStk[0][TASK_STK_SIZE - 1], 5);
    OSTaskCreate(Task_Pre, (void *)&TaskData[1], &TaskStk[1][TASK_STK_SIZE - 1], 6);
    /*err=OSTaskSuspend(6);*/
    OSTaskCreate(Task_Play, (void *)&TaskData[2], &TaskStk[2][TASK_STK_SIZE - 1], 7);
    err=OSTaskSuspend(7);
    OSTaskCreate(Task_Setup, (void *)&TaskData[3], &TaskStk[3][TASK_STK_SIZE - 1], 8);
    err=OSTaskSuspend(8);

    TaskStartDispInit();                                   /* Initialize the display                   */
   
    for (;;) {
       
	mg = (char *)OSQPend(KeyQ[0],1,&err);             /* apply for message            */

        if (err == OS_NO_ERR) {                    
            if (strcmp(mg,"Exit") == 0) {                             
                PC_DOSReturn();                            /* Return to DOS                            */
            }
        }

        OSCtxSwCtr = 0;                                    /* Clear context switch counter             */
        OSTimeDlyHMSM(0, 0, 1, 0);                         /* Wait one second                          */
    }
}

/*
*********************************************************************************************************
*                                        INITIALIZE THE DISPLAY
*********************************************************************************************************
*/

static  void  TaskStartDispInit (void)
{
	PC_DispStr( 0,  0, "         DSC Example          ", DISP_FGND_WHITE + DISP_BGND_RED + DISP_BLINK);
	PC_DispStr( 0,  1, "------------------------------", DISP_FGND_BLACK + DISP_BGND_LIGHT_GRAY);
    	PC_DispStr( 0,  2, "                              ", DISP_FGND_BLACK + DISP_BGND_LIGHT_GRAY);
	PC_DispStr( 0,  3, " Mode:                        ", DISP_FGND_BLACK + DISP_BGND_LIGHT_GRAY);
	PC_DispStr( 0,  4, "                              ", DISP_FGND_BLACK + DISP_BGND_LIGHT_GRAY);
    	PC_DispStr( 0,  5, "                              ", DISP_FGND_BLACK + DISP_BGND_LIGHT_GRAY);
    	PC_DispStr( 0,  6, "                              ", DISP_FGND_BLACK + DISP_BGND_LIGHT_GRAY);
    	PC_DispStr( 0,  7, "                              ", DISP_FGND_BLACK + DISP_BGND_LIGHT_GRAY);
    	PC_DispStr( 0,  8, "                              ", DISP_FGND_BLACK + DISP_BGND_LIGHT_GRAY);
    	PC_DispStr( 0,  9, "                              ", DISP_FGND_BLACK + DISP_BGND_LIGHT_GRAY);
	PC_DispStr( 0, 10, "                              ", DISP_FGND_BLACK + DISP_BGND_LIGHT_GRAY);
	PC_DispStr( 0, 11, "------------------------------", DISP_FGND_BLACK + DISP_BGND_LIGHT_GRAY);
	PC_DispStr( 0, 24, "   <-PRESS 'ESC' TO QUIT->    ", DISP_FGND_BLACK + DISP_BGND_LIGHT_GRAY + DISP_BLINK);
}


/*
*********************************************************************************************************
*                                               Key Scan TASK 
*
*********************************************************************************************************
*/
void  Task_Sacnkey(void *pdata)
{
       //	INT8U i;
	INT8U 	   err;
	INT16S     key;
	static char *s[]={ "Pre","Play","Setup","Exit","Capure","U","D"};

       //	i=*(int *)pdata;

	for (;;) {
		key = 0 ;
		if (PC_GetKey(&key) == TRUE) {             /* See if key has been pressed              */
			if (key == 0x1B) {                             /* Yes, see if it's the ESCAPE key          */
			       //	PC_DispStr( 0,  3, " Mode: oooo               ", DISP_FGND_BLACK + DISP_BGND_LIGHT_GRAY);
				err = OSQPost(KeyQ[0],(void*)s[3]);
			}
			else if (key == 0x50) {    /* P */
				err=OSTaskSuspend(6);
				err=OSTaskSuspend(7);
				err=OSTaskSuspend(8);
				err=OSTaskSuspend(9);

				err=OSTaskResume(6);
				err = OSQPost(KeyQ[1],(void*)s[0]);
			}
			else if (key == 0x4C) {   /* L */
				err=OSTaskSuspend(6);
				err=OSTaskSuspend(7);
				err=OSTaskSuspend(8);
				err=OSTaskSuspend(9);

				err=OSTaskResume(7);
				err = OSQPost(KeyQ[1],(void*)s[1]);
			}
			else if (key == 0x53) {    /* S */
				err=OSTaskSuspend(6);
				err=OSTaskSuspend(7);
				err=OSTaskSuspend(8);
				err=OSTaskSuspend(9);

				err=OSTaskResume(8);
				err=OSQPost(KeyQ[1],(void*)s[2]);
			}
			else if (key == 0x43) {      /* C */
			       if(Mode == 1)
				{
					err=OSQPost(KeyQ[1],(void*)s[4]);
				}
			}
			else if (key == 0X55)    {   /* U */
				if (Mode == 2 || Mode == 3)
				{
					err=OSQPost(KeyQ[1],(void*)s[5]);
			}       }
			else if (key == 0x44)    {   /* D */
				if (Mode == 2 || Mode ==3)
				{
					err=OSQPost(KeyQ[1],(void*)s[6]);
				}
			}
		}

		OSTimeDlyHMSM(0, 0, 0, 50);
	}
}

void  Task_Pre(void *pdata)
{
     char *CommRAM1;
    char       *mg;
    INT8U      err;
    INT8U      error;
    char s[80];
    pdata = pdata;         /* Prevent compiler warning                 */


    TaskStartDispInit();                                   /* Initialize the display                   */

    PC_DispStr( 0,  3, " Mode: Preview              ", DISP_FGND_BLACK + DISP_BGND_LIGHT_GRAY);

    for (;;) {
	Mode = 1 ;
	mg = (char *)OSQPend(KeyQ[1],10,&err);

       if (err == OS_NO_ERR) {
	    if (strcmp(mg,"Capure") == 0) {
	    PC_DispStr( 0,  3, " Mode: Capture            ", DISP_FGND_BLACK + DISP_BGND_LIGHT_GRAY);
	     OSTimeDlyHMSM(0, 0, 0, 500);
	     if(use<=PHOTO_NUM)
	     {
	     use++;
	     total--;
	     }
	    }

	}

	OSTimeDlyHMSM(0, 0, 0, 20);                         /* Wait one second                          */
	PC_DispStr( 0,  3, " Mode: Preview              ", DISP_FGND_BLACK + DISP_BGND_LIGHT_GRAY);
	if(use <= PHOTO_NUM)
	{
		PC_DispStr( 0,  5, " number of photos:    /     ", DISP_FGND_BLACK + DISP_BGND_LIGHT_GRAY);
		sprintf(s,"%d",use);
		PC_DispStr( 20, 5, s, DISP_FGND_BLACK + DISP_BGND_LIGHT_GRAY);
		sprintf(s,"%d",total);
		PC_DispStr( 24, 5,s, DISP_FGND_BLACK + DISP_BGND_LIGHT_GRAY);
	}
	else
	{    //  CommRAM1 = OSMemGet(CommRAM,&error);
		if(error == OS_NO_ERR)
		{

		}
		sprintf(s,"                           ");
		PC_DispStr( 0, 5,s, DISP_FGND_BLACK + DISP_BGND_LIGHT_GRAY);
		PC_DispStr( 0,  5, "the memory is full          ", DISP_FGND_BLACK + DISP_BGND_LIGHT_GRAY);
	}
    }
}


void  Task_Play(void *pdata)
{
    char       *mg;
    INT8U      err;
    INT8U      error;
    INT8U      Blk_ptr;
    char       s[80];
    int 	n = use;


    pdata = pdata;                                         /* Prevent compiler warning                 */

    for (;;) {

	mg = (char *)OSQPend(KeyQ[1],10,&err);

	if (err == OS_NO_ERR) {
	    if (strcmp(mg,"U") == 0){


		n ++;
		if (n > use)
		n = 1;

	    }
	    else if(strcmp(mg,"D") == 0){

		n --;
		if (n < 1)
		n = use;

	    }

	}
	Mode = 2 ;
	OSTimeDlyHMSM(0, 0, 0, 20);
	sprintf(s,"                           ");
	PC_DispStr( 0, 5,s, DISP_FGND_BLACK + DISP_BGND_LIGHT_GRAY);			 /* Wait one second                          */
	PC_DispStr( 0,  3, " Mode: Playback              ", DISP_FGND_BLACK + DISP_BGND_LIGHT_GRAY);
	PC_DispStr( 0,  5, " Number: Image               ", DISP_FGND_BLACK + DISP_BGND_LIGHT_GRAY);
	sprintf(s,"%d",n);
	PC_DispStr( 16, 5, s, DISP_FGND_BLACK + DISP_BGND_LIGHT_GRAY);

    }
}

void  Task_Setup(void *pdata)
{
    char       *mg;
    INT8U      err;
    int		i=0;
    char	s[80];
    static char	*lightmode[]={"on","off"};

    pdata = pdata;                                         /* Prevent compiler warning                 */

    TaskStartDispInit();                                   /* Initialize the display                   */

    for (;;) {

	mg = (char *)OSQPend(KeyQ[1],10,&err);

	if (err == OS_NO_ERR) {
	    if (strcmp(mg,"U") == 0)
	    {
		i++;
		if(i > 1)
		i = 0;
	    }
	    else if (strcmp(mg, "D") == 0)
	    {

		i--;
		if(i < 0)
		i = 1;

	    }
	}

	Mode = 3 ;
	OSTimeDlyHMSM(0, 0, 0, 20);
	sprintf(s,"                           ");
	PC_DispStr( 0, 5,s, DISP_FGND_BLACK + DISP_BGND_LIGHT_GRAY);
	PC_DispStr( 0,  3, " Mode: Setup                ", DISP_FGND_BLACK + DISP_BGND_LIGHT_GRAY);
	PC_DispStr( 0,  5, " lightmode:                 ", DISP_FGND_BLACK + DISP_BGND_LIGHT_GRAY);
	sprintf(s,"%s", (void*)lightmode[i]);
	PC_DispStr( 12, 5, s, DISP_FGND_BLACK + DISP_BGND_LIGHT_GRAY);
    }
}



void  Task_Play(void *pdata)
{
    char       *mg;
    INT8U      err;

    pdata = pdata;                                         /* Prevent compiler warning                 */

    TaskStartDispInit();                                   /* Initialize the display                   */

    Mode = 2 ;
    PC_DispStr( 0,  3, " Mode: Playback                ", DISP_FGND_BLACK + DISP_BGND_LIGHT_GRAY);

    for (;;) {

	mg = (char *)OSQPend(KeyQ[1],10,&err);             /* apply for message            */

	if (err == OS_NO_ERR) {
	    /*if (strcmp(mg,"Pre") == 0) {
		PC_DispStr( 0,  3, " Mode: Capture            ", DISP_FGND_BLACK + DISP_BGND_LIGHT_GRAY);
	    }*/
		;
	}

	OSTimeDlyHMSM(0, 0, 0, 20);                         /* Wait one second                          */
	PC_DispStr( 0,  3, " Mode: Playback                ", DISP_FGND_BLACK + DISP_BGND_LIGHT_GRAY);

    }
}

void  Task_Setup(void *pdata)
{
    char       *mg;
    INT8U      err;

    pdata = pdata;                                         /* Prevent compiler warning                 */

    TaskStartDispInit();                                   /* Initialize the display                   */

    Mode = 3 ;
    PC_DispStr( 0,  3, " Mode: Setup                ", DISP_FGND_BLACK + DISP_BGND_LIGHT_GRAY);

    for (;;) {

	mg = (char *)OSQPend(KeyQ[1],10,&err);             /* apply for message            */

	if (err == OS_NO_ERR) {
	    /*if () == 0) {
		PC_DispStr( 0,  3, " Mode: Capture            ", DISP_FGND_BLACK + DISP_BGND_LIGHT_GRAY);
	    }*/
		;
	}

	OSTimeDlyHMSM(0, 0, 0, 20);                         /* Wait one second                          */
	PC_DispStr( 0,  3, " Mode: Setup                ", DISP_FGND_BLACK + DISP_BGND_LIGHT_GRAY);

    }
}