Hi all,
I create two project. one run in flash, the other run in ram.
and copy the ram prj .bin file to flash prj uint16_t array, and running it
(lcf : internal_ram org = 0x40000000, len = 0x2000
stack org = 0x40004000, len = 0x1000)
main(void)
{
(* function)() /* jump to ram prj mian addr 0x40006382 */
//would not come back here
while(1)
{
}
}
in ram prj
(lcf: internal_ram: org = 0x40006000, len = 0x8000
stack: org = 0x4000E000, len = 0x1000)
main(void)
{
uint16_t uiDummyRead;
const uint16_t uiDataSize = sizeof( A ) / sizeof( B );
while (1)
{
uiDummyRead = uiDataSize ;
}
}
download flash prj and running, found that the uiDataSize is wrong, and the @uiDataSize is 0x400003bc
this addr is the flash prj's sdata addr
.sdata2 400003bc 00000000 00002800 00005000 00005000 0
the ram flash prj's sdata addr
.sdata2 40006854 00000000 00000710 0 00000000
so i change the type of uiDataSize to rodata, then the problem solved.
const uint16_t __attribute__((section(".rodata")))uiDataSize = sizeof( A ) / sizeof( B );
what is the cause of the problem????
Original Attachment has been moved to: Test_Prj.rar
