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We have been moving our design from 8051 to ARM Cortex. I am seeing an error complaining that the return type does not match.
error: #120: return value type does not match the function type
static char *func(void);
In this function we may return a pointer to a const *char or *char. I can cast my way out of this but is this a good way of fixing the problem? We did not see this error with the Keil 8051 compiler only with the Keil ARM compiler. Not that it is a compiler problem. I don't want to run into a compilation problem with a version change.
Since the GBA and the STR9 both use an ARM processor, would it be possible to natively run instructions from ROMs, with a wrapper that handles graphics, sound, and such? If so, would this have to be done without an OS, or can it done from within RTX?
I am interested in leveraging the technology to provide my system with an advantage over our competitors by allowing it to do more than just what has been dictated by the specification.
How well abstracted are those functions? How familiar are you with the coding of those functions?