LPC1788 Hard Fault after GUI_X_Init

reza_elc87 · August 22, 2015 at 12:56 PM

Dear friends,

I am having problems using emWin library on LPC1788. I executed the code and set a break-point on GUI_X_Init. The code reaches this point which implies that RAM works fine and the function LCD_X_Config is executed successfully. However after this point a hard fault condition occurs.
Can you tell me where the execution goes after GUI_X_Init so that I can track the flow of the program and find what might be causing hard fault?
Or do you have any idea what the problem might be?

Best regards

FBerkel · August 24, 2015 at 10:30 AM

Hi,

you wrote: "However after this point a hard fault condition occurs"

Where exactly does the problem occur? What exactly causes the hard fault? You can find it out by checking the LR-register within the hard fault handler or by returning from there with a "BX LR"

Regards...

SEGGER - Adrian · August 24, 2015 at 10:42 AM

Hello,

Please check if you have sufficient stack. In case you have, please verify the following CPU registers in order to determine the cause of the HardFault Handler:

C

<previous>   <-- SP points here before exception
SP + 0x1C   xPSR
SP + 0x18   PC
SP + 0x14   LR
SP + 0x10   R12
SP + 0x0C   R3
SP + 0x08   R2
SP + 0x04   R1
SP + 0x00   R0           <-- SP points here after exception

Best regards,
Adrian

reza_elc87 · August 29, 2015 at 12:58 PM

Dear Adrian,

Thanks a lot for your answers.
As per your suggestion I took an screenshot from the assembly part that causes the problem. Please refer to the attached picture for more information.

Yours sincerely

reza_elc87 · August 29, 2015 at 1:25 PM

Dear Adrian,

After the execution of the code, suddenly the line of code I posted previously is executed successfully. However the hard fault condition occurs in another line of code. I have attached the screenshots of where hard-fault occurs and the hard-fault itself.

Regards

SEGGER - Adrian · August 31, 2015 at 3:55 PM

Closed, since this problem is dealt with in the thread below:

https://forum.segger.com/index.php?page=Thread&threadID=2568

- Adrian

Participate now!