I do most of the time micro controller programming and i find source codes or the header file given by the manufacturer in this manner for example
There are definite addresses given here, but i write a C program for pc using Mingw to understand the behavior, i crash the pc as the addresses are not defined. How to overcome this problem? What are the address ranges i can use for PC?Code:#define Mod (*(volatile struct Mod_tag *) 0x35600000UL)
On the host, you would do
If your manufacturer data is all in one header file, then you could do something like this in your code.Code:static struct Mod_tag ModDummy; #define Mod &ModDummy
Code:#ifndef WIN32 #include <hw_addresses.h> #else // This contains all the static structs and #defined pointers #include <pc_addresses.h> #endif
If you dance barefoot on the broken glass of undefined behaviour, you've got to expect the occasional cut.
If at first you don't succeed, try writing your phone number on the exam paper.
Salem has the answer but....
Just to be clear, unless one creates a fixed position mapped region of memory, there are none in modern operating systems. A fixed region of memory is related to the interprocess library for memory mapped files.Originally Posted by Clearner123
There can be hardware on the machine which does have fixed memory regions for I/O, but it is rare and for modern systems like Linux or Windows that must be controlled by the operating system (not in a fixed location like you see in the embedded system).
This is a good lesson on why writting portible code matters
Fact - Beethoven wrote his first symphony in C
