LPC55s28 cannot access adresses > = 0x10a00

[bressan]

Hi,

I've got a project running with LPC55S28 and uVision.

If the firmware tries to access memory adresses > = 0x10a00, it crashes with hardfault.

During ICD the memory above 0x109ff is shown as unknown "?? ?? ?? ..."

Is this a security feature? Every security seems to be disabled.

How can I read data at this location?

Edit: I put some data at this area with: "__attribute__((section(".ARM.__at_0x11000")))", then the error disapeared.

[ZhangJennie · Accepted solution]

Bernahrd Bressan,

I think you met AHB read error. Please take a look at this article I ever wrote

[LPC55xx] How to fix AHB Read HardFault Error 

Best Regards

Jun Zhang