#define min(a,b)            (((a)<(b))?(a):(b))
#define max(a,b)            (((a)>(b))?(a):(b))
#define dist(a,b)         (max(a,b)-min(a,b))

void cleanUp();
void nopwait(uint16_t n);
void reverse(char* s);
char* uitoa(uint24_t n, uint8_t zeropad_len);