AnsweredAssumed Answered

Saving variables to non volatile memory in STM32F429

Question asked by Luis Ornelas on Oct 20, 2017
Latest reply on Oct 23, 2017 by Luis Ornelas

I have been reading so many post related to saving data to non volatile memory in STM32F4, but until now I haven't had success. I wonder if you can help me by doing this? Modifying my scatter file I have:

LR_IROM1 0x08000000 0x00080000  {    ; load region size_region  ER_IROM1 0x08000000 0x00080000  {  ; load address = execution address       *.o (RESET, +First)       *(InRoot$$Sections)       .ANY (+RO)      }    A 0x20000000 UNINIT 0x00000100  { ;no init section       *(.noinit)     }    RW_IRAM2 0x20000100 0x0000FFF0  {                ;all other rw data       .ANY(+RW +ZI)     }     ER_IROM2 0x08008000 UNINIT 0x00000FFF  {      *(nom_base)         }  } 

The section nom_base supposes to be in flash memory, im sure the address is right but it doesn't do anything. The section no_init is working but it only survives the resets, if I power off the board, then the value is lost. I only want to save 4 variables status, or one or two. Can you help me telling me what Im doing wrong?