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  Topic: CRC16 always 0000
Eric_91

Replies: 14
Views: 27726

PostForum: General CCS C Discussion   Posted: Wed Jun 10, 2020 3:03 am   Subject: CRC16 always 0000
Hello Ttelmah,
Indeed, I use the MPLAB X IDE.

I understand better now why we had trouble understanding each other.

I will try to obtain additional information on the MPLAB X linker.

In any c ...
  Topic: CRC16 always 0000
Eric_91

Replies: 14
Views: 27726

PostForum: General CCS C Discussion   Posted: Tue Jun 09, 2020 8:41 am   Subject: CRC16 always 0000
So sorry, I understand quickly but I have to explain myself for a long time. Very Happy

Can you watch the project: http://dl.free.fr/mDJVITHNM

So, please tell me what to change to make it work lik ...
  Topic: CRC16 always 0000
Eric_91

Replies: 14
Views: 27726

PostForum: General CCS C Discussion   Posted: Tue Jun 09, 2020 7:40 am   Subject: CRC16 always 0000
There is no file which imports the other files since in Multiple compilation Units (MCUs) the project includes a tree structure which integrates the source files.
  Topic: CRC16 always 0000
Eric_91

Replies: 14
Views: 27726

PostForum: General CCS C Discussion   Posted: Tue Jun 09, 2020 6:37 am   Subject: CRC16 always 0000
Hello Ttelmah

Thank you for your patience

I added the line
#ROM 0x0057FA = crc16 (0x000200, 0x0057F4)
in the file project_mcu.c and I loaded the code with ICD4.

It still doesn't work. :sa ...
  Topic: CRC16 always 0000
Eric_91

Replies: 14
Views: 27726

PostForum: General CCS C Discussion   Posted: Tue Jun 09, 2020 5:40 am   Subject: CRC16 always 0000
I loaded the CCS_MCU project and read your message with great interest.
I changed the processor. Compilation and link editing are ok.
But I don't understand in which file I should include the direct ...
  Topic: CRC16 always 0000
Eric_91

Replies: 14
Views: 27726

PostForum: General CCS C Discussion   Posted: Tue Jun 09, 2020 2:26 am   Subject: CRC16 always 0000
Hello Ttelmah,

Thanks a lot for your answer.

I also think the problem comes from MCUs.

In the CCS manual there is this mysterious sentence: "When linking multiple compilation units be aw ...
  Topic: CRC16 always 0000
Eric_91

Replies: 14
Views: 27726

PostForum: General CCS C Discussion   Posted: Mon Jun 08, 2020 7:32 am   Subject: CRC16 always 0000
Thank you for your answer, Wink

The syntax in the CCS manual is : #ROM address = crc16(start, end)

So when i put "#ROM 0x0057FA = crc16 (0x000200, 0x0057F4)", 0x0057FA is normally a ...
  Topic: CRC16 always 0000
Eric_91

Replies: 14
Views: 27726

PostForum: General CCS C Discussion   Posted: Mon Jun 08, 2020 5:29 am   Subject: CRC16 always 0000
Hello
I am trying to check the integrity of the flash memory of my DSPIC33FJ64GS608.
I use several compilation units.

So I put the directive "#ROM 0x0057FA = crc16 (0x000200, 0x0057F4)" ...
 
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