PIC32 using the DEE emulation library

[Graham1904]

I have posted before but no answers were forthcoming and now I have the same situation again - that of using the DEE emulation for the PIC32.

I have downloaded the DEE library and implemented the functions in the main body of the program but am getting nowhere fast.

DataEEInit(); // initialise data EE
DataEEWrite(0x1234,0x0000); // write some "test" data to DEE
DEE_Data = DataEERead(unsigned int *data,0x0000); // read data back

A simple test but what is "unsigned int *data" ? I can't see why in a READ statement you need and data in the call.

The routines do not seem to produce any meaningful results.

I have noticed that NVMADDR changes from 0x1D004000 to 0x1D004560 after the DataEEWrite() command but a search for 0x1234 does not reveal any results.

Anyone used these routines successfully before ?

Graham

 

[FvM]

A simple test but what is "unsigned int *data" ?

Whereever you got this strange code, it's not in the PIC32 DEE example downloadable from Microchip. **broken link removed**

The read call passes an unitialized pointer rather than the address of an existing data object, thus it will either generate a bus error exception or do just nothing.

There's a complete example project and I suggest to use it as a starting point if you don't understand the required interface of the DEE library.