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How to write dspic33FJ128GP802 flash memory?

zhjoy

Hi ,

I am working on a project which is using dsPIC33FJ128GP802. I am using MPLAB X IDE, XC16 compiler, pickit3.

I need to write flash memory, I thought I have done all procedures, but the code doesn't work.I attached my code here, please help to see where I missed, and how to improve.

In the code, I tried to write flash memory address 0x01000 with data 0x123456.

 

Please help.

 

Thanks a lot!

Joy

Attachments:
main.c.zip
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  • Hi,

    I just found a bug in my code, and fixed it, before it is #1000,I changed it to #0x1000. After the modification, temp.i[0] can get 0xFFFF1234, but if I check program memory, address 0x01000, it is still 0xFFFFFF. and if I reset the processor, the first time step here, temp.i[0] is 0xFFFFFFFF again. So, flash memory wasn't written.

    asm("MOV #0x1000,W0"); //an example program memory address

    Where am I wrong, please help.

     

    Thanks a lot,

    Joy

Reply

  • Hi,

    I just found a bug in my code, and fixed it, before it is #1000,I changed it to #0x1000. After the modification, temp.i[0] can get 0xFFFF1234, but if I check program memory, address 0x01000, it is still 0xFFFFFF. and if I reset the processor, the first time step here, temp.i[0] is 0xFFFFFFFF again. So, flash memory wasn't written.

    asm("MOV #0x1000,W0"); //an example program memory address

    Where am I wrong, please help.

     

    Thanks a lot,

    Joy

Children
  • in reply to zhjoy

    Hi,

    I thought the code works now, it is my verification way is wrong. After I downloaded my code to the processor and run it in debug mode, my expectation was to see in MPLAB X IDE,  the  Program Memory window, in address 0x01000, the data is changed to the new data. I think this is wrong, When I export the data which in temp.i[0] over CAN, the output value is proper.

     

    Thanks,

    Joy