• State Not Answered
  • Locked Locked
  • Replies 5 replies
  • Subscribers 21 subscribers
  • Views 2004 views
  • Users 0 members are here
2025 survey

We are running a survey to help us improve the experience for all of our members. If you see the survey appear, please take the time to tell us about your experience if you can.

Options
Related
How was your experience today?
This discussion has been locked.
You can no longer post new replies to this discussion. If you have a question you can start a new discussion

several interrupts

M Abbas

hi,

my code is too long so i put snapshot of my code


#include<..........>
.
.
.
.
.
main()
{
......
}

void down(void)//down
{

                        ES=0; //disable serial ISR
                        timer_flag=0;
                        ph_sensor_error();
                        motor_direction=ANTI_CLOCK_WISE;
                        while(ph_sensor_down==OFF && timer_flag==0)
                                motor_power=ON;
                        motor_power=OFF;
                        timer_flag=0;
                        ES=1; //enable serial ISR

}

void ph_sensor_error(void)
{
        TR0 = 1;                      /* Start Timer 1 Running */
}

/*** timer0 interrupt service routine ***/
void timer0_ISR (void) interrupt 1
{
        TR0 = 0;
        TF0 = 0;
        TH0 = 0x00;
        TL0 = 0x00;
        counter++;   // Increment the overflow count
        if(counter>=10)//0.71s
                {
                        TR0 = 0;
                        TF0=0;
                        counter=0;
                        timer_flag=1;
                }
        else
                TR0 = 1;

}

/*** serial interrupt ***/
void serial_ISR (void) interrupt 4
{
        unsigned char moh=0;
        if (RI == 1)
    {
        RI = 0;
                moh=SBUF;
                if(SBUF==0x31)
                        down();

                    }*/

}

my problem is when i entered in serial_ISR and the SBUF=0x31 it mean the condition true,when i call down() function i can not from it enter to timer0_ISR never. how can i solve this problem?