Storing variable in flash

[rmaier]

Hello,

I'm using an MC9S12P128 MCU, and I'd like to store some constants in D-flash. I have the D-flash segment defined as

DFLASH        = READ_ONLY   0x010400 TO 0x0113FF;

So, when I go to write the constant, I use the following:

#pragma CONST_SEG CAL_VAL
volatile const unsigned char __near constant1=0x7F;

When I look at where this is in the memory, it shows up as 0xC015. To me, that's nowhere in the range define above. What am I missing here?

[ZhangJennie · Accepted solution]

Hi Robert.

I just made a quick test but I didn't reproduce your problem.

see attached demo code and video.

Have a great day,
Jennie Zhang
 
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[rmaier]

I do not see any attachments. Can you please post?

[ZhangJennie]

Can't you see it?

here is the screenshot of it

[rmaier]

Thank you, Jennie. The video was very helpful. I missed some items in the prm file.

Not sure how I missed the video. My appologies.

[rmaier]

I hacked a solution. I defined constant1 in D-flash as follows:

const unsigned char constant1 @ 0x0400;

Then I can write to D-flash at this location, and all is well...