Hi,
what should be the settings for MPU if I want to execute code from Internal Flash and external SDRAM in my target
configuration?
Target Map for your reference is as follows,
Internal Flash -> 0x0 External SDRAM -> 0xA1000000
More details: 1. I have modified the scatter file to create two load regions, One LR for Internal flash starting at 0x0 and another LR for external SDRAM starting at 0xA100000
2. I am using emWin graphics library wherein emWin display buffer is using SDRAM memory starting from 0xA0000000
3. I have created two binaries(as there are two load regions) from final .axf file and I have dumped one binary in Internal flash and the other in external SDRAM through a PC utility and a secondary boot loader in my firmware
4. I can see the code in SDRAM during DEBUG mode, but as soon as the control reaches 0xA1000000, the next step lands me in HARDFAULT HANDLER.
I think, the MPU settings are incorrect. If anyone has gone through this ordeal, please point a link or any suggestions would be appreciated.
An HAL
Normally, you should be able to observe the current MPU settings with the IDE. That even works in MDK 4.14.
Hello, During the debug session, I have checked the Memory Protection Unit window through Peripherals window.
I have configured MPU with a single region of 4GB space, as Region 0. It showed following settings on the Memory Protection Unit window :
n = 0, EN = 1, ADDR = 0x00000000, SIZE = 4G, SRD = 0xFF, B = 1, C = 1, S = 1, TEX = 000B, AP = P: R/W, U: R/W XN = 0, MPU Control : 0x00000007, ENABLE = set, HFNMIENA = set, PRIVDEFENA = set.