22 if (input ==
nullptr || input[0] !=
'0' || input[1] !=
'x' || !
isHex(input[2]) ||!
isHex(input[3]) || input[4] !=
NULL) {
const char *const sSyntaxError
void Backlight(const char *input)
void setBrightness(uint8_t b)
uint32_t hexNumber(const char *s, int maxLength)
void reply(const char *s)
int strcmp(const char *s1, const char *s2)