I am trying to write a program that detects pixel level collision of bitmaps on a Teensy micro controller compiling with AVR-GCC. I am trying to work out how to calculate the position of a single byte of the bitmap on the screen and have been told I should be using pointers. I don't see the relationship between the physical address of a bitmap byte and it's position on the screen, but I would like to investigate. The problem is, I have no way of printing this address. AVR doesn't have printf and I don't know how to get it to display on the screen. Does anyone have a way of producing this address somehow in the terminal?
i.e. if I have a bitmap and want to print out the address of the first byte, what would I need to write to complete this:
??? *bit = &car_bitmap[1];
???("%??? ", bit);