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JLinkGDBServer Problem Write Accessing BKSPRAM and CCMRAM

Question asked by kirem on Nov 20, 2015
Hi All,

I have recently moved over to using a Segger J-Link JTAG adapter. I'm using JLinkGDBServer, ARM Tools GDB in eclipse. 


The device on my target hardware is an STM32F427II. It appears that I only have R/W access to the SRAM and have Read access to CCMRAM and BKSPRAM. I'm trying to enable Write access to these memory areas.


I have a break point setup and a structure already initialised by the processor in BKSPAM. I see the structure in the expressions view.

I'm sending gdb the following command:

  set mem inaccessible-by-default off

to force access to the entire memory space. From the gdb console I've also tried:

  mon info mem

To see what memory ranges the server has enabled for the device. It returns:

  Target does not support this command.

I've looked for further device configuration files in the installation folder but none seem to be associated with JLinkGDBServer.

I appreciate any assistance in enabling write access to these memory ranges,

Best Reagards, Kirem

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