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Problem writing to dsPic program memory

 
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cbarberis



Joined: 01 Oct 2003
Posts: 172
Location: Punta Gorda, Florida USA

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Problem writing to dsPic program memory
PostPosted: Tue Aug 03, 2010 10:01 am     Reply with quote
Help!!
For some reason I am unable to write to flash program memory and consequently read such. I am using the latest version of the PCD compiler (V4.109) and using a dsPIC33FJ12GP202. Based on the compiler manual I tried doing as shown. But it appears that I am not writing to the memory location as I always read 0xFFFF from the location that I supposedly wrote to. Also when I look at the program memory I do not see what I wrote.

I am sure that there is something very obvious that I am missing here. As usual any help is appreciated.
Code:

#define PWDELAYVAL 0x001000   // this is the memory location that I am storing to

unsigned int16 bytecount = 4;
unsigned int16 PW_delay ;

 write_program_memory(PWDELAYVAL, &PW_delay, bytecount);    // this is what I use to write

read_program_memory(PWDELAYVAL, &PW_delay, bytecount);   // and this is what I use to read it
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