• State Not Answered
  • Locked Locked
  • Replies 1 reply
  • Subscribers 21 subscribers
  • Views 638 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

RTX TINY LCD PROBLEM

PRANAM gharat

HI, I HAVE CREATED TWO TASK IN TASK1 I AM DOING RELAY ON OFF AND IN TASK2 I AM DISPLAING "HELLOW WORLD"ON LCD BUT ONLY TASK1 IS FUNCTIONING,LCD SOME TIME SHOWS GARBADGE AND SOMTIME ONLY CURSOR. my program
void job1(void)_task_ 0
{

lcd_init();

while(1)

{

os_create_task (1); os_create_task (2);

}
}

void lcd (void) _task_ 1
{

strcpy(lcd_buffer,"HELLOW WORLD "); lcd_display(lcd_buffer);
} void relay (void) _task_ 2
{ RELAY=~RELAY;
DELAY(20);//ms
}

i am using 4 line lcd .this is the problem of delay which i am using in lcd routine or something else.
plz help me.

Parents
  • 0

    There appear, to me, to be many problems with your program.

    1. Task 0 creates task 1 and task 2 over and over and over. You probably meant to create task 1 and task2 and then end task 0.
    2. Task 1 and task 2 perform their code and then exit. The documentation for RTX51 Tiny specifically says not to do this. So, I would be surprised if these tasks work as expected.
    3. Task 1 never appears to call os_wait or another function that gives up the CPU. You didn't specify if you use round robin or not.

    These are just a few of the problems that I found. However, if you fix these, I think you will start seeing results you expect (or at least can understand).

    Jon

Reply
  • 0

    There appear, to me, to be many problems with your program.

    1. Task 0 creates task 1 and task 2 over and over and over. You probably meant to create task 1 and task2 and then end task 0.
    2. Task 1 and task 2 perform their code and then exit. The documentation for RTX51 Tiny specifically says not to do this. So, I would be surprised if these tasks work as expected.
    3. Task 1 never appears to call os_wait or another function that gives up the CPU. You didn't specify if you use round robin or not.

    These are just a few of the problems that I found. However, if you fix these, I think you will start seeing results you expect (or at least can understand).

    Jon

Children
No data