#include<stdio.h>
 #include <time.h>
 #include <sys/time.h>
 #include <unistd.h>

 typedef unsigned int uint32_t;
 #define csp_sleep_ms(time_ms) usleep(time_ms * 1000);

 uint32_t csp_get_ms() {
     struct timespec ts;

     ) {
         +ts.tv_nsec/);
     } else {
         ;
     }
 }

 int main()
 {
     uint32_t start = csp_get_ms();
     csp_sleep_ms();
     uint32_t time = csp_get_ms()-start;
     printf(" Reply in %u ms\r\n", time);
     ;
 }