?? test.c
字號:
/*
*********************************************************************************************************
* uC/OS-II
* The Real-Time Kernel
*
* WIN32 PORT & LINUX PORT
* (c) Copyright 2004, Werner.Zimmermann@fht-esslingen.de
* (Similar to Example 1 of the 80x86 Real Mode port by Jean J. Labrosse)
* All Rights Reserved
*
* EXAMPLE #1
*********************************************************************************************************
*/
#include "includes.h"
/*
*********************************************************************************************************
* CONSTANTS
*********************************************************************************************************
*/
#define TASK_STK_SIZE 512 /* Size of each task's stacks (# of WORDs) */
#define N_TASKS 10 /* Number of identical tasks */
/*
*********************************************************************************************************
* VARIABLES
*********************************************************************************************************
*/
OS_STK TaskStk[N_TASKS][TASK_STK_SIZE]; /* Tasks stacks */
OS_STK TaskStartStk[TASK_STK_SIZE];
char TaskData[N_TASKS]; /* Parameters to pass to each task */
OS_EVENT *RandomSem;
/*
*********************************************************************************************************
* FUNCTION PROTOTYPES
*********************************************************************************************************
*/
void Task(void *data); /* Function prototypes of tasks */
void TaskStart(void *data); /* Function prototypes of Startup task */
static void TaskStartCreateTasks(void);
static void TaskStartDispInit(void);
static void TaskStartDisp(void);
/*$PAGE*/
/*
*********************************************************************************************************
* MAIN
*********************************************************************************************************
*/
int main (void)
{
PC_DispClrScr(DISP_FGND_WHITE + DISP_BGND_BLACK); /* Clear the screen */
OSInit(); /* Initialize uC/OS-II */
RandomSem = OSSemCreate(1); /* Random number semaphore */
OSTaskCreate(TaskStart, (void *)0, &TaskStartStk[TASK_STK_SIZE - 1], 0);
OSStart(); /* Start multitasking */
return 0;
}
/*
*********************************************************************************************************
* STARTUP TASK
*********************************************************************************************************
*/
void TaskStart (void *pdata)
{
INT16S key;
pdata = pdata; /* Prevent compiler warning */
TaskStartDispInit(); /* Initialize the display */
TaskStartCreateTasks(); /* Create all the application tasks */
OSStatInit(); /* Initialize uC/OS-II's statistics */
for (;;) {
TaskStartDisp(); /* Update the display */
if (PC_GetKey(&key) == TRUE) { /* See if key has been pressed */
if (key == 0x1B) { /* Yes, see if it's the ESCAPE key */
exit(0); /* End program */
}
}
OSCtxSwCtr = 0; /* Clear context switch counter */
OSTimeDlyHMSM(0, 0, 1, 0); /* Wait one second */
}
}
/*$PAGE*/
/*
*********************************************************************************************************
* INITIALIZE THE DISPLAY
*********************************************************************************************************
*/
static void TaskStartDispInit (void)
{
/* 1111111111222222222233333333334444444444555555555566666666667777777777 */
/* 01234567890123456789012345678901234567890123456789012345678901234567890123456789 */
PC_DispStr( 0, 0, " uC/OS-II, The Real-Time Kernel ", DISP_FGND_WHITE + DISP_BGND_RED);
#ifdef __WIN32__
PC_DispStr( 0, 1, " Original version by Jean J. Labrosse, 80x86-WIN32 port by Werner Zimmermann ", DISP_FGND_BLACK + DISP_BGND_LIGHT_GRAY);
#endif
#ifdef __LINUX__
PC_DispStr( 0, 1, " Original version by Jean J. Labrosse, 80x86-LINUX port by Werner Zimmermann ", DISP_FGND_BLACK + DISP_BGND_LIGHT_GRAY);
#endif
PC_DispStr( 0, 2, " ", DISP_FGND_BLACK + DISP_BGND_WHITE);
PC_DispStr( 0, 3, " EXAMPLE #1 ", DISP_FGND_BLACK + DISP_BGND_WHITE);
PC_DispStr( 0, 4, " ", DISP_FGND_BLACK + DISP_BGND_WHITE);
PC_DispStr( 0, 5, " ", DISP_FGND_BLACK + DISP_BGND_WHITE);
PC_DispStr( 0, 6, " ", DISP_FGND_BLACK + DISP_BGND_WHITE);
PC_DispStr( 0, 7, " ", DISP_FGND_BLACK + DISP_BGND_WHITE);
PC_DispStr( 0, 8, " ", DISP_FGND_BLACK + DISP_BGND_WHITE);
PC_DispStr( 0, 9, " ", DISP_FGND_BLACK + DISP_BGND_WHITE);
PC_DispStr( 0, 10, " ", DISP_FGND_BLACK + DISP_BGND_WHITE);
PC_DispStr( 0, 11, " ", DISP_FGND_BLACK + DISP_BGND_WHITE);
PC_DispStr( 0, 12, " ", DISP_FGND_BLACK + DISP_BGND_WHITE);
PC_DispStr( 0, 13, " ", DISP_FGND_BLACK + DISP_BGND_WHITE);
PC_DispStr( 0, 14, " ", DISP_FGND_BLACK + DISP_BGND_WHITE);
PC_DispStr( 0, 15, " ", DISP_FGND_BLACK + DISP_BGND_WHITE);
PC_DispStr( 0, 16, " ", DISP_FGND_BLACK + DISP_BGND_WHITE);
PC_DispStr( 0, 17, " ", DISP_FGND_BLACK + DISP_BGND_WHITE);
PC_DispStr( 0, 18, " ", DISP_FGND_BLACK + DISP_BGND_WHITE);
PC_DispStr( 0, 19, " ", DISP_FGND_BLACK + DISP_BGND_WHITE);
PC_DispStr( 0, 20, " ", DISP_FGND_BLACK + DISP_BGND_WHITE);
PC_DispStr( 0, 21, "#Tasks : CPU Usage: % ", DISP_FGND_BLACK + DISP_BGND_WHITE);
PC_DispStr( 0, 22, "#Task switch/sec: ", DISP_FGND_BLACK + DISP_BGND_WHITE);
PC_DispStr( 0, 23, " <-PRESS 'ESC' TO QUIT-> ", DISP_FGND_BLACK + DISP_BGND_WHITE);
/* 1111111111222222222233333333334444444444555555555566666666667777777777 */
/* 01234567890123456789012345678901234567890123456789012345678901234567890123456789 */
}
/*$PAGE*/
/*
*********************************************************************************************************
* UPDATE THE DISPLAY
*********************************************************************************************************
*/
static void TaskStartDisp (void)
{
char s[80];
sprintf(s, "%5d", OSTaskCtr); /* Display #tasks running */
PC_DispStr(18, 21, s, DISP_FGND_YELLOW + DISP_BGND_BLUE);
#if OS_TASK_STAT_EN > 0
sprintf(s, "%3d", OSCPUUsage /*OSIdleCtr/(OSIdleCtrMax/100)*/);/* Display CPU usage in % */
PC_DispStr(36, 21, s, DISP_FGND_YELLOW + DISP_BGND_BLUE);
#endif
sprintf(s, "%5d", OSCtxSwCtr); /* Display #context switches per second */
PC_DispStr(18, 22, s, DISP_FGND_YELLOW + DISP_BGND_BLUE);
#ifdef __WIN32__
sprintf(s, "uCOS-II V%1d.%02d WIN32 V%1d.%02d", OSVersion() / 100, OSVersion() % 100, OSPortVersion() / 100, OSPortVersion() % 100); /* Display uC/OS-II's version number */
#endif
#ifdef __LINUX__
sprintf(s, "uCOS-II V%1d.%02d LINUX V%1d.%02d", OSVersion() / 100, OSVersion() % 100, OSPortVersion() / 100, OSPortVersion() % 100); /* Display uC/OS-II's version number */
#endif
PC_DispStr(52, 22, s, DISP_FGND_YELLOW + DISP_BGND_BLUE);
}
/*$PAGE*/
/*
*********************************************************************************************************
* CREATE TASKS
*********************************************************************************************************
*/
static void TaskStartCreateTasks (void)
{
INT8U i;
for (i = 0; i < N_TASKS; i++) { /* Create N_TASKS identical tasks */
TaskData[i] = '0' + i; /* Each task will display its own letter */
OSTaskCreate(Task, (void *) &TaskData[i], &TaskStk[i][TASK_STK_SIZE - 1], (INT8U) (i + 1));
}
}
/*
*********************************************************************************************************
* TASKS
*********************************************************************************************************
*/
void Task (void *pdata)
{
INT8U x;
INT8U y;
INT8U err;
#ifdef __WIN32__
srand(GetCurrentThreadId());
#endif
#ifdef __LINUX__
srand(getppid());
#endif
for (;;) {
OSSemPend(RandomSem, 0, &err); /* Acquire semaphore to perform random numbers */
x = rand() % 78; /* Find X position where task number will appear */
y = rand() % 15; /* Find Y position where task number will appear */
OSSemPost(RandomSem); /* Release semaphore */
/* Display the task number on the screen */
PC_DispChar(x,(INT8U) (y + 5), *((char *)pdata), DISP_FGND_BLACK + DISP_BGND_GRAY);
OSTimeDly(1); /* Delay 1 clock tick */
}
}
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