如何设置指针指向程序空间地址？

大家好-我已经读了所有我能，但似乎无法理解这一点。我的脑袋在旋转，所以我希望有人能帮助我。我使用PIC24FJ64 GA2000和XC16编译器。我在运行时编写一个数据块（& lt；32 K）来编程内存。然后我想使用PSV访问那个程序空间。（我已经建立了CORCON.PSV），我知道了程序内存中测试数据块的地址，并验证了测试块的正确写入。我的问题是在PSV空间中设置一个指针到这个块。如果我创建了一个指针yxPSvyununchar ch*pTR，我应该如何设置它指向程序空间地址（0x9000）？还是我走错了路？（PS.，当测试数据块被放置在0x4000的程序空间中时，简单地通过设置PTR＝（unChar Car *）0x4000完成了这一点。我认为，在0x9000中数据的诀窍可能是设置PSVPAG＝0x01和PTR＝（unSchar *）0x1000——但这不起作用。迈克



      以下为原文

    Hello folks -  I've read all I can but can't seem to figure this out. My head is spinning so I'm hoping someone can help me here.

I am using  PIC24FJ64GA002 and XC16 compiler.

I am writing a block of data (<32k) to program memory at run time. I then want to access that program space using psv. (I have set up CORCON.PSV)

I know the address of my test data block in program memory and have verified that the test block writes correctly.

My problem is setting a pointer in the psv space to this block.

Say my data is in program space at 0x9000. If I create a pointer   __psv__unsigned char *ptr    , how should I set it to point to the program space address (0x9000)? Or am I going about this the wrong way?

(PS. I have done this successfully when the test data block is placed at in program space at  0x4000, simply by setting ptr = (unsigned char *)0x4000. I thought that maybe the trick for data at 0x9000 was to set PSVPAG = 0x01 and ptr = (unsigned char *)0x1000 - but that didn't work. )

Mike