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How do I declare a structure or array in Flash memory?

H,
How would I declare a struct containing an array, or just an array or a struct for that matter, in Flash memory. I have read the variable placing example. But that only seems to work for simple variables.

The following code just declares it in RAM.

typedef struct
{
   int SampleList[200];
   unsigned long SLi_Next;
   unsigned long SLi_Max;
} STC_DataStorage;

//As a global
const STC_DataStorage Data;

Thanks.
Richard.

Parents

0 Richard BehanHowell over 20 years ago in reply to Keil Software Support Intl.

I have tried using code from the memory example.

/* Mapped to Uninitialized Data Section (.bss) in External RAM */

unsigned char Buffer[32768];

struct {
  unsigned short us[16];
  unsigned long  ul[8];
} Table;

The compiler tells me

/cygdrive/c/Cygnus/Arm-Tools/Bin/../lib/gcc-lib/arm-thumb-elf/3.3.1/../../../../arm-thumb-elf/bin/ld: region IntRAM is full (CMU_S1.elf section .bss)

How do I map the struct to FlashRAM?
Richard.

Reply

0 Richard BehanHowell over 20 years ago in reply to Keil Software Support Intl.

I have tried using code from the memory example.

/* Mapped to Uninitialized Data Section (.bss) in External RAM */

unsigned char Buffer[32768];

struct {
  unsigned short us[16];
  unsigned long  ul[8];
} Table;

The compiler tells me

/cygdrive/c/Cygnus/Arm-Tools/Bin/../lib/gcc-lib/arm-thumb-elf/3.3.1/../../../../arm-thumb-elf/bin/ld: region IntRAM is full (CMU_S1.elf section .bss)

How do I map the struct to FlashRAM?
Richard.

Children

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