Posted on May 17, 2011 at 13:22I'm trying to use the external RAM as a spot for data with the example code (SRAM_DataMemory). When I single step the code, I get 0xFF's for all the data here in Tab[] after the loop.
for (Index = 0; Index
{
Tab[Index] =Index;
}
The linker script is working in ths case but it is not accessing the external memory. In the reset handler I have:
//#ifdef DATA_IN_ExtSRAM
/* FSMC Bank1 NOR/SRAM3 is used for the STM3210E-EVAL, if another Bank is
required, then adjust the Register Addresses*/
/* Enable FSMC clock */
*(vu32 *)0x40021014 = 0x00000114;
/* Enable GPIOD, GPIOE, GPIOF and GPIOG clocks */
*(vu32 *)0x40021018 = 0x000001E0;
/* --------------- SRAM Data lines, NOE and NWE configuration ---------------*/
/*---------------- SRAM Address lines configuration --------*/
/*---------------- NOE and NWE configuration ---------------*/
/*---------------- NE3 configuration ------*/
/*---------------- NBL0, NBL1 configuration ----------------*/
*(vu32 *)0x40011400 = 0x44BB44BB;
*(vu32 *)0x40011404 = 0xBBBBBBBB;
*(vu32 *)0x40011800 = 0xB44444BB;
*(vu32 *)0x40011804 = 0xBBBBBBBB;
*(vu32 *)0x40011C00 = 0x44BBBBBB;
*(vu32 *)0x40011C04 = 0xBBBB4444;
*(vu32 *)0x40012000 = 0x44BBBBBB;
*(vu32 *)0x40012004 = 0x44444B44;
/*---------------- FSMC Configuration -----*/
/*---------------- Enable FSMC Bank1_SRAM Bank -------------*/
*(vu32 *)0xA0000010 = 0x00001011;
*(vu32 *)0xA0000014 = 0x00000200;
//#endif /*DATA_IN_ExtSRAM*/
I folowed everything in the readme for the RIDE7 software and even commented the ifdef.
Are the registers just not set up properly? Any ideas?
Thanks in advance.
[ This message was edited by: robinsm on 02-09-2009 14:45 ]
