Hi:
My data is stored in the paged flash area, When I monitor this address 0xe08000, I set the PPAGE=0xe0, However, the program is running error, How should I set it or have another method?
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PAGE_E0 = READ_ONLY DATA_FAR IBCC_FAR 0xE08000 TO 0xE0BFFF;
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Hi,
In this case, pointer is necessary. however __pptr is not available , because it will change PPAGE register too. We have to use __far instead. With "__far", GPAGE is modified, global address is potentially used but user needn't modify other code and prm file.
see attached demo code.
Have a great day,
Jennie Zhang
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Thank you very much for your answer!
but , In your code, If I access the 0xC28000 address data, That's what I do
volatile unsigned long mybyte,test;
const unsigned long * __far myPpagePointer;
void main(void) {
volatile int i = 0;
myPpagePointer = &myBigArray_extra[0] ;
mybyte=*myPpagePointer;
myPpagePointer = &myBigArray[0] ;
mybyte=*myPpagePointer;
for(;;)
{
mybyte=*myPpagePointer++;
i++;
test=(*(unsigned char *)(0xC28000));
}
}
However, data is not available, If I want to get the data from this address,
I want to retrieve data directly from the paging address
What should I do?
Have a great day!
please note key word "__far" is a qualifier for global pointer. while 0xc2000 is a logical address, you need convert it to global address first with HCSXAddrMap. this tool is in your debugger menu "component", "open..."
Besides, __far keyword is important to extend address to 3bytes.
Thus revise your code like this can fix your problem:
test=(*(unsigned long * __far)(0x708000));
Have a great day,
Jennie Zhang
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Note: If this post answers your question, please click the Correct Answer button. Thank you!
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