Classic/Legacy CodeWarriorのトピックDSP56F801 : how to locate a long array in flash?

DSP56F801 : how to locate a long array in flash?

jjl3 — Thu, 07 Sep 2006 20:35:22 GMT

I am programming for DSP56F801 and want to define a long array, as following:

uchar program_content1[]={0x8B,0x89,0x9E,0xFE,0x05,0xF6,0xAF,0x01,0x9E,0xFF,0x05,0x88,0x8A,0x81,0xA7,0xFC,0xC6,0xC0,0x85,0x4C,0x95,0xE7,0x01,0xC6,0xC0,0x84,0x4C,0xF7,0x32,0xC0,0x86,0x20,
                          0x1F,0x89,0x8B,0xF6,0x87,0xE6,0x02,0x4C,0x9E,0xE7,0x06,0xE6,0x03,0xEE,0x01,0x8A,0x4C,0x20,0x03,0x7F,0xAF,0x01,0x4B,0xFB,0x9E,0x6B,0x05,0xF7,0x8A,0x88,0xAF,0x04,
                          0x9E,0x6B,0x02,0xDD,0x9E,0x6B,0x01,0xD9,0x32,0xC0,0x88,0x89,0x8B,0xAD,0xB1,0x97,0x4C,0x9E,0xE7,0x03,0xAD,0xAA,0x4C,0x9E,0xE7,0x04,0x4A,0x26,0x03,0x51,0x00,0x18,
                          0xAD,0x9E,0x87,0x8A,0xAD,0x9A,0x97,0x20,0x05,0xAD,0x95,0xF7,0xAF,0x01,0x9E,0x6B,0x04,0xF7,0x9E,0x6B,0x03,0xF3,0x20,0xD5,0xA7,0x06,0x81,0x45,0x01,0x50,0x94,0xAD,
                          0x8D,0xCC,0xC0,0x92,0x00,0x00,0xC0,0x8A,0xC1,0x03,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x10,0x10,0xB6,0x13,0xA4,0xFD,0xAA,0x01,0xB7,0x13,0x3F,0x02,0x3F,0x06,
                          0xB6,0x0A,0xA4,0x80,0xB7,0x0A,0xB6,0x0E,0xA4,0xE4,0xB7,0x0E,0xB6,0x12,0xA4,0xC0,0xB7,0x12,0xB6,0x46,0xA4,0xF8,0xB7,0x46,0xCD,0xC0,0xE3,0xA6,0x48,0xCD,0xC0,0xFB,
                          0xA6,0x65,0xCD,0xC0,0xFB,0xA6,0x6C,0xCD,0xC0,0xFB,0xA6,0x6C,0xCD,0xC0,0xFB,0xA6,0x6F,0xCD,0xC0,0xFB,0xA6,0x21,0xCD,0xC0,0xFB,0xA6,0x0A,0xCD,0xC0,0xFB,0xC7,0x18,
                          0x00,0x20,0xFB,0x3F,0x1A,0x3F,0x1E,0x3F,0x1B,0x3F,0x18,0x6E,0x1A,0x19,0xB6,0x1E,0xAA,0x0F,0xB7,0x1E,0xB6,0x1B,0xAA,0x2C,0xB7,0x1B,0x81,0x0F,0x1C,0x02,0xB7,0x1F,
                          0x16,0x1B,0x81,0x00,0x00};

when I compile, but display as below:

Link Error: Segment overflow .x_internal_RAM

Reserved size is 0x000003c0 --overflow 0x0000009f

but I need this array, so i want to locate this arrray into program flash.

how can i do?

thanks & best regards

Message Edited by CrasyCat on 2007-04-13 02:18 PM

Re: how to locate a long array in flash?

Lundin — Fri, 08 Sep 2006 13:55:16 GMT

You might want to make a const array for that.

Also, check out the .prm file and #pragma CONST_SEG.

Re: how to locate a long array in flash?

admin — Fri, 08 Sep 2006 21:02:21 GMT

I agree, make it a const:

const uchar program_content1[ ] =

{

(lots of stuff here)

};

-Tomahawk

Re: how to locate a long array in flash?

mel — Mon, 11 Sep 2006 20:55:47 GMT

There a couple of options here --

To put it in flash data space just make it a const.

To put in code space do the following:

- Edit the .c file make an array like: __pmem const byte copybaud_block[] = {0x07,0x0e,3,'B',0x82,0x17,0x22};
- Edit the .cmd file (linker file) and insert the line * (.const.data.pmem) in the application code,

I got this information from tech support and had trouble getting on my own

Or you might have enough ram data space and you just don;t have it configured big enough.

In the memory section of your *.cmd file you should look at line

.x_Data (RW) : ORIGIN = 0x00000001, LENGTH = 0x00001FFF - here you need to check actually ram in your processor

and make sure you have it all set up. Hope this helps.

Re: how to locate a long array in flash?

jjl3 — Tue, 12 Sep 2006 11:24:49 GMT

Thanks all of you!

whether it is because I am using a evaluated license?

I will try as what mel said.

Message Edited by jjl3 on 2006-09-11 11:27 PM

Re: how to locate a long array in flash?

Gene — Tue, 12 Sep 2006 14:56:56 GMT

Is there anyway to allocate entire flash block to the array.

I need to save my settings to Flash os that I could restore them after a full power down (battery change). uC I'm using does not have EEPROM so FLASH is my only option. The problem with FLASH is that it has to be erased in blocks (Pages) and I would like to tell CodeWarrior not to use one of the pages for program code. I understand that I can declare an array constant to put it in flash, but is there a way to specify start address of the arroay so that it would be in the beggining of the new page?

I hope my questions has made any sense.

Thank you,

Gene

Re: how to locate a long array in flash?

jjl3 — Thu, 14 Sep 2006 18:41:43 GMT

just simply define this array as below:

const uchar program_content1[ ] =

{

(lots of stuff here)

};

the issue (RAM overflow) can't be solved.

Re: how to locate a long array in flash?

Dhiman — Sat, 10 Oct 2009 19:54:33 GMT

you use

#pragma optimization_level 4
__pmem int [arrey you need to write]

with this mathod arrey or whatsoever you defined take programm memory

if you write

int [arrey you need to write]

this take ram for storage