05-03-2006, 05:38 AM
I saw our posting on comp.dsp and took the liberty of writing to you.I
need help badly (so i am writing directly to you)since my project is
stuck and i am out of ideas now.
I have been trying to port my code to the SDRAM using the Hex Utility
(hex55). I have no clue as to how can i place my code into SDRAM.
I will give you a slight background of the things i am doing.
I am using CCS3.1 and an EVM5502 kit. The CSL i am suing is 2.31.00.7
When i compile my app (i am using BIOS) i create a new memory module
named SDRAM (word addressed) and place everything except .hwi_vec into
it.
o:=0x8000 l:=0x200000 (4MB)
Now i get a map file which echoes this action. Now using flash burn and
some minimal options like (-parallel16, -boot, -m2, etc., -e cint) is
it possible to place code in SDRAM( i also configure PLL and EMIF in my
cmd file). I mean i am not sure if the code is actually running from
SDRAM(when i see on oscilloscope i don't get anything). But the code is
running (an audio loopback basically) and i can hear music.
I presume it is running form DARAM (since it is of small size{hex file}
46k only).
Can someone guide me into how to place the code in flash and then start
running from SDRAM. I have a larger code size which i will have to
ultimately place in SDRAM and run from there only, DARAM can't support
it.
Please help me out. Thanks for reading along.
Rohit
P.S.:- attached below is cmd file(extension changed to cm1<--
attachement problems) i use to generate my hex file.
======================STARTS===================
/* Use CCS to build the FlashBlink.out program
* by opening the FlashBlink.pjt file and selecting
* Build. After that, open a DOS window in the same
* directory and type
*
* hex55 post_hex.cmd
*
* to produce post.hex for downloading.
* Use the FlashBurn application to download.
*/
-boot /* Place all initialized sections in image
*/
-v5510:2 /* Set processor type */
-parallel16 /* Set Flash system memory width */
/******************************************/
/*************PLL AND EMIF*****************/
/******************************************/
-reg_config 0x1c80, 0x000c /*Oscialltor Power Down and PLL in reset
asserted state*/
-reg_config 0x1c88, 0x000a /*Multiplier of 10 in PLLM*/
-reg_config 0x1c8a, 0x8000 /*Divider D0 enabled divide by 1*/
/*DELAY of 1us = 200 clock cycles*/
-delay 0xc8
-reg_config 0x1c80, 0x0004 /*Reset is released*/
/*DELAY for Locking = 256 clock cycles*/
-delay 0x100
-reg_config 0x1c80, 0x0005 /*PLL mode enabled*/
/* Now setting the Clock Groups */
-reg_config 0x1c8c, 0x8000 /*Setting DMA clocks to 200Mhz*/
-reg_config 0x1c8e, 0x8000 /*Setting McBsp base clocks to 200Mhz*/
-reg_config 0x1c90, 0x8001 /*Setting Up EMIF cloc to 100Mhz*/
/*CLKOUT3 is configured at RESET as 000b which makes it run at
200Mhz*/
/* Hence DSP core is running at 200Mhz*/
/*CLKMD which controls X2/CLKIN as the clock input*/
/*XBSR which selects EMIF 32 bit bus operation */
/*Both of them have been enabled by GPIOs*/
/*(Now Configuring EMIF)*/
-reg_config 0x0800, 0x0020
-reg_config 0x0800, 0x0020
-reg_config 0x0804, 0xFF33
-reg_config 0x080C, 0xF000
-reg_config 0x080D, 0x4748
-reg_config 0x080E, 0x0001
-reg_config 0x0822,0x0002
/******************************************/
/*******PLL and EMIF settings end**********/
/******************************************/
-e _c_int00 /*Entry Point is Main */
-m2 /* Select Motorola-S1 */
-o evm_apps.hex /* Name hex output file */
-map evm_apps.map /* Name hex utility map file */
evm_app.out /* Input COFF file */
ROMS
{
PAGE 0 : ROM : o=0x400000, l=0x80000
}
========================ENDS===================
need help badly (so i am writing directly to you)since my project is
stuck and i am out of ideas now.
I have been trying to port my code to the SDRAM using the Hex Utility
(hex55). I have no clue as to how can i place my code into SDRAM.
I will give you a slight background of the things i am doing.
I am using CCS3.1 and an EVM5502 kit. The CSL i am suing is 2.31.00.7
When i compile my app (i am using BIOS) i create a new memory module
named SDRAM (word addressed) and place everything except .hwi_vec into
it.
o:=0x8000 l:=0x200000 (4MB)
Now i get a map file which echoes this action. Now using flash burn and
some minimal options like (-parallel16, -boot, -m2, etc., -e cint) is
it possible to place code in SDRAM( i also configure PLL and EMIF in my
cmd file). I mean i am not sure if the code is actually running from
SDRAM(when i see on oscilloscope i don't get anything). But the code is
running (an audio loopback basically) and i can hear music.
I presume it is running form DARAM (since it is of small size{hex file}
46k only).
Can someone guide me into how to place the code in flash and then start
running from SDRAM. I have a larger code size which i will have to
ultimately place in SDRAM and run from there only, DARAM can't support
it.
Please help me out. Thanks for reading along.
Rohit
P.S.:- attached below is cmd file(extension changed to cm1<--
attachement problems) i use to generate my hex file.
======================STARTS===================
/* Use CCS to build the FlashBlink.out program
* by opening the FlashBlink.pjt file and selecting
* Build. After that, open a DOS window in the same
* directory and type
*
* hex55 post_hex.cmd
*
* to produce post.hex for downloading.
* Use the FlashBurn application to download.
*/
-boot /* Place all initialized sections in image
*/
-v5510:2 /* Set processor type */
-parallel16 /* Set Flash system memory width */
/******************************************/
/*************PLL AND EMIF*****************/
/******************************************/
-reg_config 0x1c80, 0x000c /*Oscialltor Power Down and PLL in reset
asserted state*/
-reg_config 0x1c88, 0x000a /*Multiplier of 10 in PLLM*/
-reg_config 0x1c8a, 0x8000 /*Divider D0 enabled divide by 1*/
/*DELAY of 1us = 200 clock cycles*/
-delay 0xc8
-reg_config 0x1c80, 0x0004 /*Reset is released*/
/*DELAY for Locking = 256 clock cycles*/
-delay 0x100
-reg_config 0x1c80, 0x0005 /*PLL mode enabled*/
/* Now setting the Clock Groups */
-reg_config 0x1c8c, 0x8000 /*Setting DMA clocks to 200Mhz*/
-reg_config 0x1c8e, 0x8000 /*Setting McBsp base clocks to 200Mhz*/
-reg_config 0x1c90, 0x8001 /*Setting Up EMIF cloc to 100Mhz*/
/*CLKOUT3 is configured at RESET as 000b which makes it run at
200Mhz*/
/* Hence DSP core is running at 200Mhz*/
/*CLKMD which controls X2/CLKIN as the clock input*/
/*XBSR which selects EMIF 32 bit bus operation */
/*Both of them have been enabled by GPIOs*/
/*(Now Configuring EMIF)*/
-reg_config 0x0800, 0x0020
-reg_config 0x0800, 0x0020
-reg_config 0x0804, 0xFF33
-reg_config 0x080C, 0xF000
-reg_config 0x080D, 0x4748
-reg_config 0x080E, 0x0001
-reg_config 0x0822,0x0002
/******************************************/
/*******PLL and EMIF settings end**********/
/******************************************/
-e _c_int00 /*Entry Point is Main */
-m2 /* Select Motorola-S1 */
-o evm_apps.hex /* Name hex output file */
-map evm_apps.map /* Name hex utility map file */
evm_app.out /* Input COFF file */
ROMS
{
PAGE 0 : ROM : o=0x400000, l=0x80000
}
========================ENDS===================