Hallo, i have not understand the difference of locating constants in the following example: Txt1 is located in Rom, while Txt2 (declared inside a function) is a variable in Ram and will be copied in ram.
const char Txt1[] = "Hallo1"; void main(void) { const char Txt2[] = "Hallo2"; char c1, c2; c1 = Txt1[0]; c2 = Txt2[0]; while(1) ; }
This is a basic C question (that's why I removed the toolset specification). The difference between the two is what C calls "storage duration" of a variable. Your Txt2 is of "automatic" storage duration, Txt1 is of "static" storage duration. It's pretty much guaranteed to be an error to have a single variable both "const" and "automatic". Change the declaration of Txt2 to
static const char Txt2[]="Hallo2";
Thank you very much, Eugen