?? test.c
字號:
/*
*********************************************************************************************************
* uC/OS-II
* The Real-Time Kernel
*
* (c) Copyright 1992-2002, Jean J. Labrosse, Weston, FL
* All Rights Reserved
* The philosopher's problem
*
*********************************************************************************************************
*/
#include "includes.h"
#include "stdio.h"
/*
*********************************************************************************************************
* CONSTANTS
*********************************************************************************************************
*/
#define TASK_STK_SIZE 512 /* Size of each task's stacks (# of WORDs) */
#define TASK_START_ID 5 /* Application tasks IDs */
#define TASK_1_ID 0
#define TASK_2_ID 1
#define TASK_3_ID 2
#define TASK_4_ID 3
#define TASK_5_ID 4
#define TASK_START_PRIO 10 /* Application tasks priorities */
#define TASK_1_PRIO 11
#define TASK_2_PRIO 12
#define TASK_3_PRIO 13
#define TASK_4_PRIO 14
#define TASK_5_PRIO 15
#define THINKING 0
#define HUNGRY 1
#define EATING 2
#define N 5
#define M 10000
/*
*********************************************************************************************************
* VARIABLES
*********************************************************************************************************
*/
OS_STK TaskStartStk[TASK_STK_SIZE]; /* Startup task stack */
OS_STK Task1Stk[TASK_STK_SIZE]; /* Task #1 task stack */
OS_STK Task2Stk[TASK_STK_SIZE]; /* Task #2 task stack */
OS_STK Task3Stk[TASK_STK_SIZE]; /* Task #3 task stack */
OS_STK Task4Stk[TASK_STK_SIZE]; /* Task #4 task stack */
OS_STK Task5Stk[TASK_STK_SIZE]; /* Task #5 task stack */
OS_EVENT *RandomSem[N];
OS_EVENT *Mutex;
char state[N];
char task1[M];
char task2[M];
char task3[M];
char task4[M];
char task5[M];
/*
*********************************************************************************************************
* FUNCTION PROTOTYPES
*********************************************************************************************************
*/
void TaskStart(void *data); /* Function prototypes of tasks */
static void TaskStartCreateTasks(void);
static void TaskStartDispInit(void);
static void TaskStartDisp(void);
void Task1(void *data);
void Task2(void *data);
void Task3(void *data);
void Task4(void *data);
void Task5(void *data);
void Take_chopsticks(int i);
void Put_chopsticks(int i);
void Test(int i);
void TaskStateDisp(int i);
/*$PAGE*/
/*
*********************************************************************************************************
* MAIN
*********************************************************************************************************
*/
void main (void)
{
OS_STK *ptos;
OS_STK *pbos;
INT32U size;
INT8U i;
INT8U err;
PC_DispClrScr(DISP_FGND_WHITE); /* Clear the screen */
OSInit(); /* Initialize uC/OS-II */
PC_DOSSaveReturn(); /* Save environment to return to DOS */
PC_VectSet(uCOS, OSCtxSw); /* Install uC/OS-II's context switch vector */
PC_ElapsedInit(); /* Initialized elapsed time measurement */
for(i=0;i<N;i++)
{
state[i]='0'+THINKING;
RandomSem[i] = OSSemCreate(1);
}
Mutex =OSMutexCreate(0,&err);
ptos = &TaskStartStk[TASK_STK_SIZE - 1]; /* TaskStart() will use Floating-Point */
pbos = &TaskStartStk[0];
size = TASK_STK_SIZE;
OSTaskStkInit_FPE_x86(&ptos, &pbos, &size);
OSTaskCreateExt(TaskStart,
(void *)0,
ptos,
TASK_START_PRIO,
TASK_START_ID,
pbos,
size,
(void *)0,
OS_TASK_OPT_STK_CHK | OS_TASK_OPT_STK_CLR);
OSStart(); /* Start multitasking */
}
/*$PAGE*/
/*
*********************************************************************************************************
* STARTUP TASK
*********************************************************************************************************
*/
void TaskStart (void *pdata)
{
#if OS_CRITICAL_METHOD == 3 /* Allocate storage for CPU status register */
OS_CPU_SR cpu_sr;
#endif
INT16S key;
INT8U i;
INT8U display;
display=1;
pdata = pdata; /* Prevent compiler warning */
TaskStartDispInit(); /* Setup the display */
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();
OSStatInit(); /* Initialize uC/OS-II's statistics */
TaskStartCreateTasks(); /* Create all other tasks */
for (;;) {
TaskStartDisp(); /* Update the display */
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 */
}
}
if (PC_GetKey(&key)) { /* See if key has been pressed */
if (key == 0x61) { /* Yes, see if it's the ESCAPE key */
OSTaskSuspend(11);
OSTaskSuspend(12);
OSTaskSuspend(13);
OSTaskSuspend(14);
OSTaskSuspend(15);
display=0;
}
}
if (PC_GetKey(&key)) { /* See if key has been pressed */
if (key == 0x62) { /* Yes, see if it's the ESCAPE key */
OSTaskResume(11);
OSTaskResume(12);
OSTaskResume(13);
OSTaskResume(14);
OSTaskResume(15);
display=1;
}
}
if(i>=M)
i=0;
task1[i]=state[0];
task2[i]=state[1];
task3[i]=state[2];
task4[i]=state[3];
task5[i]=state[4];
if(display==1)
TaskStateDisp(i);
i++;
OSCtxSwCtr = 0; /* Clear context switch counter */
OSTimeDly(OS_TICKS_PER_SEC); /* Wait one second */
}
}
void TaskStateDisp(int i)
{
INT8U col;
INT8U row;
if(i>=40){
row=6;
col=40;
}
else{
row=0;
col=-4;
}
PC_DispChar( i-col,7+row, task1[i] , DISP_FGND_BLACK + DISP_BGND_LIGHT_GRAY);
PC_DispChar( i-col,8+row, task2[i] , DISP_FGND_BLACK + DISP_BGND_LIGHT_GRAY);
PC_DispChar( i-col,9+row, task3[i] , DISP_FGND_BLACK + DISP_BGND_LIGHT_GRAY);
PC_DispChar( i-col,10+row,task4[i] , DISP_FGND_BLACK + DISP_BGND_LIGHT_GRAY);
PC_DispChar( i-col,11+row,task5[i] , DISP_FGND_BLACK + DISP_BGND_LIGHT_GRAY);
}
/*$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 + DISP_BLINK);
PC_DispStr( 0, 1, " Jean J. Labrosse ", DISP_FGND_BLACK + DISP_BGND_LIGHT_GRAY);
PC_DispStr( 0, 2, " ", DISP_FGND_BLACK + DISP_BGND_LIGHT_GRAY);
PC_DispStr( 0, 3, " The philosopher's problem ", DISP_FGND_BLACK + DISP_BGND_LIGHT_GRAY);
PC_DispStr( 0, 4, " 2008-3-21 ", 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, "p1: ", DISP_FGND_BLACK + DISP_BGND_LIGHT_GRAY);
PC_DispStr( 0, 8, "p2: ", DISP_FGND_BLACK + DISP_BGND_LIGHT_GRAY);
PC_DispStr( 0, 9, "p3: ", DISP_FGND_BLACK + DISP_BGND_LIGHT_GRAY);
PC_DispStr( 0, 10, "p4: ", DISP_FGND_BLACK + DISP_BGND_LIGHT_GRAY);
PC_DispStr( 0, 11, "p5: ", DISP_FGND_BLACK + DISP_BGND_LIGHT_GRAY);
PC_DispStr( 0, 12, " ", DISP_FGND_BLACK + DISP_BGND_LIGHT_GRAY);
PC_DispStr( 0, 13, " ", DISP_FGND_BLACK + DISP_BGND_LIGHT_GRAY);
PC_DispStr( 0, 14, " ", DISP_FGND_BLACK + DISP_BGND_LIGHT_GRAY);
PC_DispStr( 0, 15, " ", DISP_FGND_BLACK + DISP_BGND_LIGHT_GRAY);
PC_DispStr( 0, 16, " ", DISP_FGND_BLACK + DISP_BGND_LIGHT_GRAY);
PC_DispStr( 0, 17, " ", DISP_FGND_BLACK + DISP_BGND_LIGHT_GRAY);
PC_DispStr( 0, 18, " ", DISP_FGND_BLACK + DISP_BGND_LIGHT_GRAY);
PC_DispStr( 0, 19, " ", DISP_FGND_BLACK + DISP_BGND_LIGHT_GRAY);
PC_DispStr( 0, 20, " ", DISP_FGND_BLACK + DISP_BGND_LIGHT_GRAY);
PC_DispStr( 0, 21, " ", DISP_FGND_BLACK + DISP_BGND_LIGHT_GRAY);
PC_DispStr( 0, 22, "#Tasks : CPU Usage: % ", DISP_FGND_BLACK + DISP_BGND_LIGHT_GRAY);
PC_DispStr( 0, 23, "#Task switch/sec: ", DISP_FGND_BLACK + DISP_BGND_LIGHT_GRAY);
PC_DispStr( 0, 24, " <-PRESS 'ESC' TO QUIT-> ", DISP_FGND_BLACK + DISP_BGND_LIGHT_GRAY + DISP_BLINK);
/* 1111111111222222222233333333334444444444555555555566666666667777777777 */
/* 01234567890123456789012345678901234567890123456789012345678901234567890123456789 */
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