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在网站上下载一个程序把ucos移植到mega128后，怎么二极管不闪阿？
感觉到好像是时间延时这个没有一起任务的在在一次调度，是不是缺少一个定时器中断阿，这个中断该怎么设置，那位高手帮下忙给说说，谢谢了！（编译没有问题的，是不是还有一个变量没有设置阿）
#include <includes.h>
#define CPU_CLK_FREQ 3684000L
#define OS_TASK_START_STK_SIZE OS_TASK_STK_SIZE
#define OS_TASK_START_HARD_STK_SIZE OS_TASK_HARD_STK_SIZE
#define OS_TASK_1_STK_SIZE OS_TASK_STK_SIZE
#define OS_TASK_1_HARD_STK_SIZE OS_TASK_HARD_STK_SIZE
#define OS_TASK_2_STK_SIZE OS_TASK_STK_SIZE
#define OS_TASK_2_HARD_STK_SIZE OS_TASK_HARD_STK_SIZE
OS_STK AppTaskStartStk[OS_TASK_START_STK_SIZE];
OS_STK AppTask1Stk[OS_TASK_1_STK_SIZE];
OS_STK AppTask2Stk[OS_TASK_2_STK_SIZE];
void main(void);
static void AppTaskStart(void *p_arg);
static void AppTaskCreate(void);
static void AppTask1(void *p_arg);
static void AppTask2(void *p_arg);
static void AppIOInit(void);
static void LED_Toggle(INT8U led);
void main (void)
{
/*---- Any initialization code prior to calling OSInit() goes HERE --------------------------------*/
OSInit()
OSTaskStkSize = OS_TASK_STK_SIZE; /* Setup the default stack size */
OSTaskHardStkSize = OS_TASK_HARD_STK_SIZE; /* Setup the default hardware */
OSInit(); /* Initialize "uC/OS-II, The Real-Time */
/*---- Any initialization code before starting multitasking ---------------------------------------*/
OSTaskStkSize = OS_TASK_START_STK_SIZE; /* Setup the total stack */
OSTaskHardStkSize = OS_TASK_START_HARD_STK_SIZE; /* Setup the hardware */
OSTaskCreate(AppTaskStart, (void *)0, (OS_STK *)&AppTaskStartStk[OSTaskStkSize - 1], 0);
/*---- Create any other task you want before we start multitasking --------------------------------*/
OSStart();
}
static void AppTaskStart (void *p_arg)
{
p_arg = p_arg;
OSTickISR_Init();
AppIOInit();
AppTaskCreate();
while (TRUE) {
LED_Toggle(1);
OSTimeDly(OS_TICKS_PER_SEC / 10);
}
}
static void AppTaskCreate (void)
{
/*---- Task initialization code goes HERE! --------------------------------------------------------*/
OSTaskStkSize = OS_TASK_1_STK_SIZE; /* Setup the default stack size */
OSTaskHardStkSize = OS_TASK_1_HARD_STK_SIZE; /* Setup the default hardware stack size */
OSTaskCreate(AppTask1, (void *)0, (OS_STK *)&AppTask1Stk[OSTaskStkSize - 1], 1);
OSTaskStkSize = OS_TASK_2_STK_SIZE; /* Setup the default stack size */
OSTaskHardStkSize = OS_TASK_2_HARD_STK_SIZE; /* Setup the default hardware stack size */
OSTaskCreate(AppTask2, (void *)0, (OS_STK *)&AppTask2Stk[OSTaskStkSize - 1], 2);
}
/*
*********************************************************************************************************
* TASK #1
*********************************************************************************************************
*/
static void AppTask1(void *p_arg)
{
p_arg = p_arg;
while (TRUE)
{
LED_Toggle(2);
OSTimeDly(OS_TICKS_PER_SEC / 5);
}
}
/*
*********************************************************************************************************
* TASK #2
*********************************************************************************************************
*/
static void AppTask2(void *p_arg)
{
p_arg = p_arg;
while (TRUE)
{
LED_Toggle(3);
OSTimeDly(OS_TICKS_PER_SEC / 2);
}
}
/*
*********************************************************************************************************
* SETUP THE I/Os
*********************************************************************************************************
*/
static void AppIOInit (void)
{
DDRD = 0xFF;
PORTD = 0xFF;
}
/*
*********************************************************************************************************
* SETUP THE TICK RATE
*********************************************************************************************************
*/
void OSTickISR_Init (void)
{
TCCR0 = 0x07; /* Set TIMER0 prescaler to TIMSK = 0x01;
}
/*
*********************************************************************************************************
* SETUP THE TICK RATE
*********************************************************************************************************
*/
void OSTickISR_Handler (void)
{
TCNT0 = 256 - (CPU_CLK_FREQ / OS_TICKS_PER_SEC / 1024);
OSTimeTick();
}
static void LED_Toggle (INT8U led)
{
#if OS_CRITICAL_METHOD == 3 /* Allocate storage for CPU status register */
OS_CPU_SR cpu_sr;
#endif
OS_ENTER_CRITICAL();
switch (led) {
case 1:
PORTD ^= 0x01;
break;
case 2:
PORTD ^= 0x02;
break;
case 3:
PORTD ^= 0x04;
break;
case 4:
PORTD ^= 0x08;
break;
}
OS_EXIT_CRITICAL();
} |
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发表于 2006-12-16 16:01:15
楼主
