Define Memory Location To Specific Value

In a header declare something like:

extern uint32_t variableAtSpecificAddress;

and then in the linker command file:

variableAtSpecificAddress           = 0xADDRESS;   // replace ADDRESS with your actual requirement

Nevertheless you could still use the C-ish way: just define a pointer to the required data type and make an assignment to the pointer with your required address, e.g.

uint16_t *p;
p = (uint16_t *)0xADDRESS;
*p = value;

Hardy

Thanks for your reply.  Is the uint16_t type available in CCS V5.3 or is it unique only to IAR?

Ralph,

i believe this wiki should be able to help you:

http://processors.wiki.ti.com/index.php/Placing_Variables_in_Specific_Memory_Location_-_MSP430

for the uint16_t data type, i am not a C standard expert, but i believe this is derived from the C99 standard stdint.h standard header file:

http://pubs.opengroup.org/onlinepubs/009695399/basedefs/stdint.h.html

both IAR and CCS should support this standard header file.

Thanks Leo,

From the Wiki I tried to utilize the #pragma LOCATION ( x, address); directive with no luck.  Please reference SLAU132G page 82.  There seem to be minor differences compared to the Wiki.

Code snippet:

unsigned int* CRC_pointer = (unsigned int*) ROM_END_ADDR;

#pragma LOCATION (var, *CRC_pointer);

unsigned int var;

Warnings:

#179-D variable "var" was declared but never referenced Post.c /3100x1 line 76 C/C++ Problem

#827-D specified symbol 'var' undefined Post.c /3100x1 line 75 C/C++ Problem

Regards,

Ralph