Switching block memory.

[sbencke3]

Posted on January 07, 2004 at 11:14

Switching block memory.

[sbencke3]

Posted on May 17, 2011 at 11:57

Please I’m trying to jump from the secondary flash to primary, but I can’t do it:

Using PSDsoft express I configured the flash in the following adress:

Main Flash (Data)

FS0 – 8000 ~ 9fff

FS1 – 8000 ~ 9fff

FS2 – 8000 ~ 9fff

Secondary Flash (Code)

CSBOOT0 – 0 ~ 1fff

CSBOOT1 – 2000~ 3fff

I make a simple program just to write something at LCD and I write it in the main flash (FS0) and in the CSBOOT0 I tried to change the state of Main flash from data to code and the secondary flash from code to data using the commands below:

PSD8xx_reg.PAGE = 0;

PSD8xx_reg.VM = 0x0C;

My idea after it, is run the program existed in the main flash, but it doesn’t work. PLEASE somebody can help me ?

[babidesai123]

Posted on May 17, 2011 at 11:57

hi,

i think u should use the memory map as folows.

fs0: 8000-9fff !swap (page register bit 7 used as logic)

0000-1fff swap

csboot0: 0000-1fff !swap

8000 -9fff swap

now whenver u want to execute from FS0, u can bring it into the code space by setting the page reg bit 7 & set the VM reg accordingly..

.At reset/poweron page reg value will always be 0 ,so by default CSBOOT0 will be in code space( make the seetings in PSD soft accordingly).

Purvi