How can I tell the compiler to put specific variables there ?
Not an IAR guy, but there is probably a #pragma for that, check the documentation. The C16/8051 used to be along the lines of #pragma memory=constseg(MY_CONST):far const char formatstring[]=''%02X''; #pragma memory=default For ARM Try checking #pragma location, and #pragma section http://supp.iar.com/FilesPublic/UPDINFO/004916/arm/doc/EWARM_DevelopmentGuide.ENU.pdf
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