Hello,
I am using nuvoton N79E715AT28 mcu for some project in which I need to store some integer values in some non volatile memory space. So that it does not get deleted even after power goes off.
The above mcu provides a user configurable flash memory shared with programe memory(APROM). After configuration the APROM memory address are (0x0000 - 0x3EFF) and the flash memory address are (0x3F00 - 0x3FFF).
I have used the command (unsigned int idata value1 _at_ 0x3F00;), but it gives the error c274: 'value1' : absolute specifier illegal.
shivam177770@gmail.com said:counts the number of interrupts that is generated via a push button
I hope you have debounced your push button ...
shivam177770@gmail.com said:I need to know the C command to solve this problem
There is no specific 'C' function.
You have to understand how to do non-volatile storage in your chip, and then implement that in 'C'.
You will need to study the chip's documentation and/or contact the manufacturer for details of what facilities it provides for non-volatile storage, and how to use them.
It has nothing specifically to do with Keil.
shivam177770@gmail.com said:If xdata is used instead of idata then the variable will be stored in the ram
Not necessarily: as far as the CPU is concerned, it is just an address space - the chip manufacturer might have mapped non-volatile storage into that space.
Again, you will need to study the chip's documentation and/or contact the manufacturer for details.