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

Are you required to use an ASCII string of the decimal representation? It would be much easier to store it in hexadecimal format. No division required, only (relatively cheap) shift operations. Excel should be able to read it if you prepend a '0x' to each number.