Hi,
I've tried run code from ram. My code is
#pragma segment="RAMCODE"
#pragma segment="ROMCODE"
/*******************************************************************************
* LOCAL FUNCTIONS
*/
/* place the next function in RAMCODE */
#pragma location="RAMCODE"
void LedOnFunc(void)
{
LED_ON
}
/* enable IAR extensions, this is necessary to get __sfb and
__sfe, it is of course possible to write this function in
assembler instead */
#pragma language=extended
void init_ram_code()
{
void * ram_start = __sfb("RAMCODE"); /* start of RAMCODE */
void * ram_end = __sfe("RAMCODE"); /* end of RAMCODE */
void * rom_start = __sfb("ROMCODE"); /* start of ROMCODE */
/* compute the number of bytes to copy */
unsigned long size = (unsigned long)(ram_end) - (unsigned long)(ram_start);
/* copy the contents of ROMCODE to RAMCODE */
memcpy( ram_start, rom_start, size );
}
/* restore the previous mode */
#pragma language=default
/*******************************************************************************
* @fn main
*
* @brief Main program
*
* @param void
*
* @return int (does not return)
*/
int main(void)
{
/* Initialize Clock Source (32 Mhz Xtal),
* global interrupt (EA=1), I/O ports and pheripherals(LCD). */
halBoardInit();
init_ram_code();
MEMCTR |= 0x08;
LedOnFunc();
for(;;)
}
I've add
-QRAMCODE=ROMCODE
-Z(DATA)RAMCODE=0x1E00-0x1F00
-Z(CODE)ROMCODE=0x4000-0x7FFF
to linker file.
The function LedOnFunc() works but from address 0x4000 checked by debugger. If I comment init_ram_code() LedOnFunc() works whatever. So how I can check the function run from RAM?
