Converting to ASCII in C

Question

Using a microcontroller (PIC18F4580), I need to collect data and send it to an SD card for later analysis. The data it collects will have values between 0 and 1023, or 0x0 a

Answer 1

Is there some reason that you're particularly concerned about this?

If your compiler and C library provide an itoa() function, use that, and then worry about writing this code (and associated tests and so forth to make sure you got it right!) if for some reason that turns out to be too slow or doesn't fit into RAM or something.