Lv_task proplem

How-to
1

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Hi，When I debug my code，It always stop at the position as image shows and can not run，I dont know why？ What it means？

2

What do you mean by “stops”? Does it crash? Do you get a fault?

3

The code freezes,I dont get a fault. Now It always stop at the position as image shows and can not run，I dont know why？ What it means？

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4

It seems like a memory corruption. Do you have any special things related to memory? E.g. external memory, custom malloc, etc.

Is it stops even if you don’t create any objects?

5

such is the case I have some custom malloc， It does not stop when i don’t create any objects. How do i deal with?

6

Exactly what happens when you step the debugger at that line?

I am trying to find the exact symptom.

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The picture shows what happened when I step the debugger.

8

Please show the disassembly view inside the lv_task_handler function.

9

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I create a task for uart process. the problem just happen when I send a command from pc to the arm9 mcu.

10

I’m not sure that this is related to LittlevGL then - I suspect your uart_process may be corrupting something.

11

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This is the lv_task_handler in the main().

12

No, I want the assembly code for lv_task_handler, not the C code. Your IDE should be able to show that.

But in light of your last comment, I think this is not necessarily a LittlevGL issue.

13

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This is a section code of uart_process() where happen error.

14

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In process_set_cur_value() ,I need to write the value into external Nand Flash.

15

This appears to be outside the scope of LittlevGL and this forum.

You can retrieve the value with lv_bar_get_value. How you write it to NAND is not related to LittlevGL itself.

16

Thanks very much!! I learned much today. I will review my code.:smiley: