Community
cancel
Showing results for 
Search instead for 
Did you mean: 
Highlighted
Beginner
203 Views

Why doesn't my task work when a timer is added. (with MicroC/OS-II)

As shown in the following source code, if a timer is added, the timer interrupt operation will be performed periodically, but Task1 will not work.

If I do not execute init_timer (), Task1 is working reliably.

(*) It is necessary to turn off and on for some reason.

Please tell me the cause and the solution.

// ***** main.c *****

#include <stdio.h>

#include "includes.h"

#include "altera_avalon_timer_regs.h"

#include "sys/alt_irq.h"

#define  TASK_STACKSIZE      2048

OS_STK   Task1_stk[TASK_STACKSIZE];

#define TASK1_PRIORITY     1

volatile int m_context_Timer;

int Count_Task1 = 0;

int Count_Timer = 0;

void Task1(void* pdata)

{

 while (1)

 {

 Count_Task1++;

 printf("Hello from Task1 = %d\n",Count_Task1);

   OSTimeDlyHMSM(0, 0, 2, 0);

 }

}

static void timer1sec_interrupts(void* context)

{

 IOWR_ALTERA_AVALON_TIMER_STATUS(USER_TIMER_BASE,0);

 Count_Timer++;

 printf("Hello from Timer = %d\n",Count_Timer);

}

void init_timer()

{

 alt_u32 count;

 void* timer_ptr=(void*)&m_context_Timer;

 alt_ic_isr_register(USER_TIMER_IRQ_INTERRUPT_CONTROLLER_ID,USER_TIMER_IRQ,timer1sec_interrupts,timer_ptr,0x0);

 count = 50000000 - 1;   // 1sec

 IOWR_ALTERA_AVALON_TIMER_PERIODL(USER_TIMER_BASE, count & 0xffff);

 IOWR_ALTERA_AVALON_TIMER_PERIODH(USER_TIMER_BASE, (count >> 16) & 0xffff);

 IOWR_ALTERA_AVALON_TIMER_STATUS(USER_TIMER_BASE,0);

 IOWR_ALTERA_AVALON_TIMER_CONTROL(USER_TIMER_BASE,7);

}

int main(void)

{

 printf("MicroC/OS-II Licensing Terms\n");

 printf("============================\n");

#if(1)

 init_timer();

#endif

 OSTaskCreateExt(Task1,

                 NULL,

                 (void *)&Task1_stk[TASK_STACKSIZE-1],

                 TASK1_PRIORITY,

                 TASK1_PRIORITY,

     Task1_stk,

                 TASK_STACKSIZE,

                 NULL,

                 0);

 OSStart();

 return 0;

}

// ***** system.h *****

#define ALT_MODULE_CLASS_user_timer altera_avalon_timer

#define USER_TIMER_ALWAYS_RUN 0

#define USER_TIMER_BASE 0x2000

#define USER_TIMER_COUNTER_SIZE 32

#define USER_TIMER_FIXED_PERIOD 0

#define USER_TIMER_FREQ 50000000

#define USER_TIMER_IRQ 15

#define USER_TIMER_IRQ_INTERRUPT_CONTROLLER_ID 0

#define USER_TIMER_LOAD_VALUE 49999

#define USER_TIMER_MULT 0.001

#define USER_TIMER_NAME "/dev/user_timer"

#define USER_TIMER_PERIOD 1

#define USER_TIMER_PERIOD_UNITS "ms"

#define USER_TIMER_RESET_OUTPUT 0

#define USER_TIMER_SNAPSHOT 1

#define USER_TIMER_SPAN 32

#define USER_TIMER_TICKS_PER_SEC 1000

#define USER_TIMER_TIMEOUT_PULSE_OUTPUT 0

#define USER_TIMER_TYPE "altera_avalon_timer"

// ***** Execution result (Use init_timer) *****

MicroC/OS-II Licensing Terms

============================

Hello from Task1 = 1

Hello from Timer = 1

Hello from Timer = 2

Hello from Timer = 3

Hello from Timer = 4

Hello from Timer = 5

Hello from Timer = 6

// ***** Execution result (Not use init_timer) *****

MicroC/OS-II Licensing Terms

============================

Hello from Task1 = 1

Hello from Task1 = 2

Hello from Task1 = 3

Hello from Task1 = 4

Hello from Task1 = 5

Hello from Task1 = 6

Tags (4)
0 Kudos
2 Replies
Highlighted
Employee
12 Views

Hi,

Are you using the intel's timer IP?

 

0 Kudos
Highlighted
Beginner
12 Views

Thanks for your comment.

 

 

Yes,I using the the intel's timer IP.

The information of system.h about USER_TIMER was described at the previous question.

Please let me know any information.

0 Kudos