Drop all that code, and just use 'strtol' from the standard library. #include <stdlib.h> long strtol (const char *__nptr, char **__endptr, ... ... <看更多>

Utility functions for converting values between hex strings and decimal numbers on Arduino. (Helpful for color conversion). ... <看更多>

For example – ff9d denotes a value of -99. The function you wrote returns an unsigned integer which, being unsigned, cannot be negative. ... <看更多>

String stringOne = String(analogRead(0), DEC); // using an int and a base. String stringOne = String(45, HEX); // using an int and a base (hexadecimal) ... <看更多>

... <看更多>