New ContributorWhy 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
