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#include <sys/time.h>
#include <inttypes.h>
#include <drivers/drv_hrt.h>
#include <stdio.h>
uint64_t hrt_absolute_time()
{
struct timeval te;
gettimeofday(&te, NULL); // get current time
unsigned long long us = static_cast<uint64_t>(te.tv_sec) * 1e6 + te.tv_usec; // caculate us
printf("us: %lld\n", us);
return us;
}
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